:root {
  --color-ink: #14334f;
  --color-muted: #587087;
  --color-paper: #fffaf1;
  --color-panel: #ffffff;
  --color-line: rgba(20, 51, 79, 0.14);
  --color-primary: #2563eb;
  --color-primary-dark: #1647b8;
  --color-accent: #f4c430;
  --shadow-soft: 0 22px 70px rgba(20, 51, 79, 0.14);
  --radius-lg: 30px;
  --radius-md: 20px;
  --content-max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  color: var(--color-ink);
  background:
    linear-gradient(90deg, rgba(20, 51, 79, 0.04) 1px, transparent 1px),
    linear-gradient(0deg, rgba(20, 51, 79, 0.04) 1px, transparent 1px),
    radial-gradient(circle at top left, rgba(244, 196, 48, 0.28), transparent 34rem),
    linear-gradient(135deg, #fffaf1 0%, #edf6ff 48%, #f8fbff 100%);
  background-size: 34px 34px, 34px 34px, auto, auto;
  font-family: Georgia, "Times New Roman", serif;
}

body {
  min-height: 100vh;
  margin: 0;
}

body.has-modal-open {
  overflow: hidden;
}

img,
svg {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}

button,
input,
select {
  font: inherit;
}

.page-shell {
  width: min(var(--content-max), calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.15rem 0 4rem;
}

.hero {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.75fr);
  gap: 1.5rem;
  align-items: stretch;
  padding: 2rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow-soft);
}

.hero::before {
  content: "";
  position: absolute;
  inset: auto auto -7rem -5rem;
  width: 18rem;
  height: 18rem;
  border-radius: 999px;
  background: rgba(244, 196, 48, 0.26);
  filter: blur(4px);
}

.hero-copy,
.hero-panel {
  position: relative;
}

.hero h1 {
  max-width: 13.5ch;
  margin: 0;
  font-size: clamp(2.45rem, 5.8vw, 5.2rem);
  line-height: 0.94;
  letter-spacing: -0.07em;
}

.hero-lead {
  max-width: 68ch;
  margin: 1.1rem 0 0;
  color: var(--color-muted);
  font-size: clamp(1rem, 1.55vw, 1.14rem);
  line-height: 1.68;
}

.eyebrow {
  margin: 0 0 0.75rem;
  color: var(--color-primary-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.4rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: 0.75rem 1.15rem;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 800;
  text-decoration: none;
}

.button-primary {
  color: #fff;
  background: var(--color-primary);
}

.button-secondary {
  border: 1px solid var(--color-line);
  background: #fff;
}

.button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

body.has-access-modal {
  overflow: hidden;
}

.access-placeholder {
  border-style: dashed;
  background:
    linear-gradient(135deg, rgba(37, 99, 235, 0.06), rgba(255, 255, 255, 0.94)),
    #fff;
}

.access-modal {
  position: fixed;
  inset: 0;
  z-index: 1700;
}

.access-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(20, 51, 79, 0.46);
  backdrop-filter: blur(8px);
}

.access-modal-dialog {
  position: relative;
  width: min(34rem, calc(100% - 1.4rem));
  margin: min(14vh, 5rem) auto 0;
  padding: 1.3rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  box-shadow: var(--shadow-soft);
}

.access-modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.access-modal-header h2 {
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  letter-spacing: -0.04em;
}

.access-modal-body {
  margin-top: 0.85rem;
  color: var(--color-muted);
  line-height: 1.7;
}

.access-modal-actions {
  margin-top: 1.15rem;
}

.access-debug-toggle {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 1600;
  display: grid;
  gap: 0.18rem;
  width: min(18rem, calc(100% - 2rem));
  padding: 0.78rem 0.95rem;
  border: 1px solid rgba(20, 51, 79, 0.14);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 16px 40px rgba(20, 51, 79, 0.18);
  text-align: left;
}

.access-debug-toggle strong {
  color: var(--color-ink);
  font-size: 0.95rem;
}

.access-debug-toggle span {
  color: var(--color-muted);
  font-size: 0.82rem;
  line-height: 1.35;
}

.access-debug-toggle.is-active {
  border-color: rgba(37, 99, 235, 0.28);
  background: rgba(230, 240, 255, 0.96);
}

.scramble-info-panel strong {
  max-width: 12ch;
}

.scramble-grammar-section {
  background:
    radial-gradient(circle at top left, rgba(20, 51, 79, 0.1), transparent 22rem),
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(250, 246, 238, 0.88));
}

.scramble-grammar-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(260px, 0.75fr);
  gap: 1rem;
  align-items: stretch;
}

.scramble-grammar-main,
.scramble-warning-card,
.scramble-detail-list details,
.scramble-example-grid article {
  border: 1px solid rgba(20, 51, 79, 0.12);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 16px 42px rgba(20, 51, 79, 0.08);
}

.scramble-grammar-main,
.scramble-warning-card {
  display: grid;
  gap: 0.85rem;
  padding: 1.15rem;
}

.scramble-grammar-main h3,
.scramble-warning-card h3,
.scramble-grammar-main p,
.scramble-warning-card p {
  margin: 0;
}

.scramble-grammar-main h3,
.scramble-warning-card h3 {
  color: var(--color-primary-dark);
}

.scramble-grammar-main p,
.scramble-warning-card p {
  color: var(--color-muted);
  line-height: 1.65;
}

.scramble-decision-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
}

.scramble-decision-grid span {
  display: grid;
  gap: 0.2rem;
  min-height: 5.75rem;
  padding: 0.85rem;
  border-radius: 18px;
  background: rgba(37, 99, 235, 0.08);
  color: var(--color-primary-dark);
  font-weight: 850;
  line-height: 1.35;
}

.scramble-decision-grid strong {
  color: var(--color-ink);
  font-size: 0.88rem;
}

.scramble-warning-card {
  background:
    radial-gradient(circle at top right, rgba(34, 197, 94, 0.14), transparent 12rem),
    #fff;
}

.scramble-detail-list {
  display: grid;
  gap: 0.8rem;
  margin-top: 1rem;
}

.scramble-detail-list details {
  overflow: hidden;
  padding: 0.95rem 1rem;
}

.scramble-detail-list summary {
  color: var(--color-ink);
  cursor: pointer;
  font-weight: 950;
}

.scramble-detail-list p {
  margin: 0.75rem 0 0;
  color: var(--color-muted);
  line-height: 1.58;
}

.scramble-examples-section {
  background:
    radial-gradient(circle at bottom right, rgba(244, 196, 48, 0.12), transparent 20rem),
    rgba(255, 255, 255, 0.9);
}

.scramble-example-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.scramble-example-grid article {
  display: grid;
  gap: 0.55rem;
  padding: 1rem;
}

.scramble-example-grid span {
  justify-self: start;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  color: var(--color-primary-dark);
  background: rgba(37, 99, 235, 0.1);
  font-size: 0.78rem;
  font-weight: 950;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.scramble-example-grid strong {
  color: var(--color-ink);
  line-height: 1.45;
}

.scramble-example-grid p {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.52;
}

.scramble-guided-practice {
  margin-top: 1.4rem;
}

.scramble-card {
  display: grid;
  gap: 1rem;
  padding: 1.2rem;
  border: 1px solid var(--color-line);
  border-radius: 24px;
  background: #fff;
}

.scramble-card.is-correct {
  border-color: rgba(34, 197, 94, 0.28);
  background: linear-gradient(180deg, rgba(34, 197, 94, 0.08), #fff);
}

.scramble-card.is-wrong {
  border-color: rgba(239, 68, 68, 0.24);
  background: linear-gradient(180deg, rgba(239, 68, 68, 0.08), #fff);
  cursor: pointer;
}

.scramble-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.scramble-card-number,
.scramble-chip {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  font-size: 0.84rem;
  font-weight: 800;
}

.scramble-card-number {
  color: var(--color-primary-dark);
  background: rgba(37, 99, 235, 0.1);
}

.scramble-chip {
  color: var(--color-ink);
  background: rgba(20, 51, 79, 0.08);
}

.scramble-answer,
.scramble-bank {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  min-height: 4.35rem;
  padding: 0.8rem;
  border-radius: 20px;
  border: 1px dashed rgba(20, 51, 79, 0.16);
  background: rgba(248, 251, 255, 0.92);
}

.scramble-answer.is-empty::before {
  content: "Aquí se construye la frase";
  color: rgba(88, 112, 135, 0.7);
}

.scramble-answer.is-correct {
  border-style: solid;
  border-color: rgba(34, 197, 94, 0.34);
  background: rgba(34, 197, 94, 0.08);
}

.scramble-answer.is-wrong {
  border-style: solid;
  border-color: rgba(239, 68, 68, 0.34);
  background: rgba(239, 68, 68, 0.08);
  cursor: pointer;
}

.scramble-answer.is-solution {
  border-style: solid;
  border-color: rgba(37, 99, 235, 0.34);
  background: rgba(37, 99, 235, 0.08);
  cursor: pointer;
}

.scramble-token {
  min-height: 2.55rem;
  padding: 0.55rem 0.8rem;
  border: 1px solid rgba(20, 51, 79, 0.12);
  border-radius: 999px;
  background: #fff;
  font-weight: 700;
}

.scramble-token.is-selected {
  background: rgba(20, 51, 79, 0.08);
}

.scramble-token.is-solution {
  color: #0f49c7;
  background: rgba(37, 99, 235, 0.12);
  border-color: rgba(37, 99, 235, 0.26);
}

.scramble-feedback {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.6;
}

.scramble-feedback.is-correct {
  color: #0f8a44;
  font-weight: 700;
}

.scramble-feedback.is-wrong {
  color: #c03636;
  font-weight: 700;
}

.scramble-launch-card {
  margin-top: 1.5rem;
}

.scramble-list {
  display: grid;
  gap: 1rem;
}

.scramble-modal-dialog {
  width: min(58rem, calc(100% - 1.4rem));
  max-height: min(79vh, 46rem);
  padding: 1.2rem;
}

.scramble-modal-progress {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.2rem;
  color: var(--color-muted);
  font-size: 0.94rem;
  font-weight: 700;
}

.scramble-modal-stage {
  display: grid;
  gap: 0.9rem;
  margin-top: 1rem;
}

.scramble-modal-dialog .scramble-card {
  gap: 0.9rem;
  padding: 1rem;
}

.scramble-modal-dialog .scramble-answer,
.scramble-modal-dialog .scramble-bank {
  min-height: 4rem;
  padding: 0.75rem;
}

.scramble-modal-dialog .scramble-token {
  min-height: 2.45rem;
  padding: 0.5rem 0.78rem;
}

.scramble-modal-dialog .exam-actions {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.8rem;
  margin-top: 1rem;
}

.scramble-modal-dialog .exam-actions .button {
  width: 100%;
}

.sentences-info-panel strong {
  max-width: 13ch;
}

.sentences-grammar-section {
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.12), transparent 22rem),
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(239, 246, 255, 0.84));
}

.sentences-grammar-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(260px, 0.75fr);
  gap: 1rem;
  align-items: stretch;
}

.sentences-grammar-main,
.sentences-warning-card,
.sentences-detail-list details,
.sentences-example-grid article {
  border: 1px solid rgba(20, 51, 79, 0.12);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 16px 42px rgba(20, 51, 79, 0.08);
}

.sentences-grammar-main,
.sentences-warning-card {
  display: grid;
  gap: 0.85rem;
  padding: 1.15rem;
}

.sentences-grammar-main h3,
.sentences-warning-card h3,
.sentences-grammar-main p,
.sentences-warning-card p {
  margin: 0;
}

.sentences-grammar-main h3,
.sentences-warning-card h3 {
  color: var(--color-primary-dark);
}

.sentences-grammar-main p,
.sentences-warning-card p {
  color: var(--color-muted);
  line-height: 1.65;
}

.sentences-decision-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
}

.sentences-decision-grid span {
  display: grid;
  gap: 0.2rem;
  min-height: 5.75rem;
  padding: 0.85rem;
  border-radius: 18px;
  background: rgba(37, 99, 235, 0.08);
  color: var(--color-primary-dark);
  font-weight: 850;
  line-height: 1.35;
}

.sentences-decision-grid strong {
  color: var(--color-ink);
  font-size: 0.88rem;
}

.sentences-warning-card {
  background:
    radial-gradient(circle at top right, rgba(244, 196, 48, 0.18), transparent 12rem),
    #fff;
}

.sentences-detail-list {
  display: grid;
  gap: 0.8rem;
  margin-top: 1rem;
}

.sentences-detail-list details {
  overflow: hidden;
  padding: 0.95rem 1rem;
}

.sentences-detail-list summary {
  color: var(--color-ink);
  cursor: pointer;
  font-weight: 950;
}

.sentences-detail-list p {
  margin: 0.75rem 0 0;
  color: var(--color-muted);
  line-height: 1.58;
}

.sentences-examples-section {
  background:
    radial-gradient(circle at bottom right, rgba(34, 197, 94, 0.1), transparent 20rem),
    rgba(255, 255, 255, 0.9);
}

.sentences-example-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.sentences-example-grid article {
  display: grid;
  gap: 0.55rem;
  padding: 1rem;
}

.sentences-example-grid span {
  justify-self: start;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  color: var(--color-primary-dark);
  background: rgba(37, 99, 235, 0.1);
  font-size: 0.78rem;
  font-weight: 950;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.sentences-example-grid strong {
  color: var(--color-ink);
  line-height: 1.45;
}

.sentences-example-grid p {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.52;
}

.sentences-level-picker {
  display: grid;
  gap: 0.45rem;
  min-width: 9rem;
  color: var(--color-ink);
  font-weight: 800;
}

.sentences-level-picker select {
  min-height: 2.65rem;
  padding: 0.55rem 0.8rem;
  border: 1px solid rgba(20, 51, 79, 0.14);
  border-radius: 0.9rem;
  color: var(--color-ink);
  background: #fff;
  cursor: pointer;
}

.sentence-card {
  display: grid;
  gap: 1rem;
  padding: clamp(1rem, 2vw, 1.25rem);
  border: 1px solid rgba(20, 51, 79, 0.12);
  border-radius: 1.25rem;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow-soft);
}

.sentence-card.is-correct {
  border-color: rgba(34, 197, 94, 0.34);
  background: linear-gradient(180deg, rgba(34, 197, 94, 0.08), #fff);
}

.sentence-card.is-wrong {
  border-color: rgba(239, 68, 68, 0.24);
  background: linear-gradient(180deg, rgba(239, 68, 68, 0.08), #fff);
}

.sentence-card-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem;
}

.sentence-card-number,
.sentence-chip {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.35rem 0.68rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 850;
}

.sentence-card-number {
  color: var(--color-primary-dark);
  background: rgba(37, 99, 235, 0.1);
}

.sentence-chip {
  color: var(--color-ink);
  background: rgba(20, 51, 79, 0.08);
}

.sentence-line,
.sentence-review-sentence {
  margin: 0;
  color: var(--color-ink);
  font-size: clamp(1.02rem, 2vw, 1.18rem);
  line-height: 2.35;
}

.sentence-inline-input {
  display: inline-flex;
  width: min(12rem, 46vw);
  min-height: 2.32rem;
  margin: 0 0.18rem;
  padding: 0.34rem 0.62rem;
  border: 1px solid rgba(20, 51, 79, 0.18);
  border-radius: 0.8rem;
  color: var(--color-ink);
  background: #fff;
  text-align: center;
  vertical-align: middle;
}

.sentence-inline-input:focus {
  outline: 3px solid rgba(37, 99, 235, 0.16);
  border-color: var(--color-primary);
}

.sentences-modal-dialog {
  width: min(54rem, calc(100% - 1.4rem));
  max-height: min(82vh, 45rem);
}

.sentences-modal-stage {
  display: grid;
  gap: 0.9rem;
}

.sentences-modal-dialog .sentence-card {
  padding: 1rem;
}

.sentences-modal-dialog .sentence-line {
  line-height: 2.18;
}

.sentences-modal-dialog .sentence-inline-input {
  min-height: 2.18rem;
  padding-block: 0.28rem;
}

.sentences-review-list {
  display: grid;
  gap: 1rem;
}

.sentence-review-answer {
  justify-self: start;
  min-height: 2.35rem;
  padding: 0.45rem 0.75rem;
  border: 1px solid transparent;
  border-radius: 0.85rem;
  font-weight: 850;
  cursor: pointer;
}

.sentence-review-sentence .sentence-review-answer {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0 0.18rem;
  vertical-align: middle;
}

.sentence-review-answer.is-correct {
  color: #0f8a44;
  border-color: rgba(34, 197, 94, 0.34);
  background: #ecfdf3;
  cursor: default;
}

.sentence-review-answer.is-wrong {
  color: #991b1b;
  border-color: rgba(239, 68, 68, 0.28);
  background: #fff1f2;
}

.sentence-review-answer.is-answer {
  color: #0f49c7;
  border-color: rgba(37, 99, 235, 0.34);
  background: #eff6ff;
}

.sentences-finish-card {
  text-align: center;
}

.conditionals-info-panel strong {
  max-width: 14ch;
}

.conditionals-theory-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.conditionals-theory-card {
  display: grid;
  gap: 0.75rem;
  padding: 1rem;
  border: 1px solid rgba(20, 51, 79, 0.12);
  border-radius: 1.25rem;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(239, 246, 255, 0.72));
  box-shadow: var(--shadow-soft);
}

.conditionals-theory-card h3,
.conditionals-theory-card p {
  margin: 0;
}

.conditionals-theory-card h3 {
  color: var(--color-ink);
  font-size: 1.1rem;
}

.conditionals-theory-card p,
.conditionals-theory-card blockquote {
  color: var(--color-muted);
  line-height: 1.55;
}

.conditionals-formula {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.conditionals-formula span {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  color: var(--color-primary-dark);
  background: rgba(37, 99, 235, 0.1);
  font-weight: 850;
  font-size: 0.82rem;
}

.conditionals-note {
  padding-left: 0.7rem;
  border-left: 3px solid rgba(37, 99, 235, 0.32);
}

.conditionals-theory-card blockquote {
  margin: 0;
  padding: 0.75rem;
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.72);
}

.conditionals-grammar-section {
  background:
    radial-gradient(circle at top left, rgba(244, 196, 48, 0.14), transparent 22rem),
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(250, 246, 238, 0.92));
}

.conditionals-grammar-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(260px, 0.75fr);
  gap: 1rem;
  align-items: stretch;
}

.conditionals-grammar-main,
.conditionals-warning-card,
.conditionals-detail-list details,
.conditionals-example-grid article {
  border: 1px solid rgba(20, 51, 79, 0.12);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 16px 42px rgba(20, 51, 79, 0.08);
}

.conditionals-grammar-main,
.conditionals-warning-card {
  display: grid;
  gap: 0.85rem;
  padding: 1.15rem;
}

.conditionals-grammar-main h3,
.conditionals-warning-card h3,
.conditionals-grammar-main p,
.conditionals-warning-card p {
  margin: 0;
}

.conditionals-grammar-main h3,
.conditionals-warning-card h3 {
  color: var(--color-primary-dark);
}

.conditionals-grammar-main p,
.conditionals-warning-card p {
  color: var(--color-muted);
  line-height: 1.65;
}

.conditionals-decision-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
}

.conditionals-decision-grid span {
  display: grid;
  gap: 0.2rem;
  min-height: 5.5rem;
  padding: 0.85rem;
  border-radius: 18px;
  background: rgba(37, 99, 235, 0.08);
  color: var(--color-primary-dark);
  font-weight: 850;
}

.conditionals-decision-grid strong {
  color: var(--color-ink);
  font-size: 0.88rem;
}

.conditionals-warning-card {
  background:
    radial-gradient(circle at top right, rgba(239, 68, 68, 0.12), transparent 12rem),
    #fff;
}

.conditionals-detail-list {
  display: grid;
  gap: 0.8rem;
  margin-top: 1rem;
}

.conditionals-detail-list details {
  overflow: hidden;
  padding: 0.95rem 1rem;
}

.conditionals-detail-list summary {
  color: var(--color-ink);
  cursor: pointer;
  font-weight: 950;
}

.conditionals-detail-list p {
  margin: 0.75rem 0 0;
  color: var(--color-muted);
  line-height: 1.58;
}

.conditionals-examples-section {
  background:
    radial-gradient(circle at bottom right, rgba(37, 99, 235, 0.1), transparent 20rem),
    rgba(255, 255, 255, 0.9);
}

.conditionals-example-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.conditionals-example-grid article {
  display: grid;
  gap: 0.55rem;
  padding: 1rem;
}

.conditionals-example-grid span {
  justify-self: start;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  color: var(--color-primary-dark);
  background: rgba(37, 99, 235, 0.1);
  font-size: 0.78rem;
  font-weight: 950;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.conditionals-example-grid strong {
  color: var(--color-ink);
  line-height: 1.45;
}

.conditionals-example-grid p {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.52;
}

.conditionals-modal-dialog {
  width: min(56rem, calc(100% - 1.4rem));
  max-height: min(82vh, 45rem);
}

@media (max-width: 920px) {
  .conditionals-theory-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .conditionals-grammar-layout,
  .conditionals-example-grid,
  .sentences-grammar-layout,
  .sentences-example-grid,
  .scramble-grammar-layout,
  .scramble-example-grid {
    grid-template-columns: 1fr;
  }

  .conditionals-decision-grid,
  .sentences-decision-grid,
  .scramble-decision-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .scramble-modal-dialog .exam-actions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .sentences-modal-dialog .exam-actions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .conditionals-theory-grid {
    grid-template-columns: 1fr;
  }

  .conditionals-decision-grid {
    grid-template-columns: 1fr;
  }

  .sentences-decision-grid {
    grid-template-columns: 1fr;
  }

  .scramble-decision-grid {
    grid-template-columns: 1fr;
  }
}

.active-passive-hero {
  grid-template-columns: minmax(0, 1.12fr) minmax(280px, 0.52fr);
}

.active-passive-info-panel {
  min-height: 18rem;
}

.active-passive-info-panel strong {
  max-width: 11ch;
}

.active-passive-theory-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-top: 1.2rem;
}

.active-passive-formula-card,
.active-passive-table-card,
.active-passive-builder-card,
.active-passive-question-card {
  border: 1px solid rgba(20, 51, 79, 0.12);
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 18px 38px rgba(15, 23, 42, 0.08);
}

.active-passive-formula-card {
  display: grid;
  gap: 0.7rem;
  padding: 1.2rem;
}

.active-passive-formula-card span {
  width: max-content;
  padding: 0.35rem 0.68rem;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.12);
  color: var(--color-primary-dark);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.active-passive-formula-card strong,
.active-passive-formula-card p {
  margin: 0;
}

.active-passive-formula-card p {
  color: var(--color-muted);
}

.active-passive-tips,
.active-passive-table-card {
  margin-top: 1.25rem;
}

.active-passive-table-card {
  overflow: hidden;
}

.active-passive-table-head,
.active-passive-table-row {
  display: grid;
  grid-template-columns: minmax(130px, 0.8fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: 0.95rem;
  padding: 0.95rem 1rem;
}

.active-passive-table-head {
  background: rgba(20, 51, 79, 0.06);
  font-weight: 800;
}

.active-passive-table-row + .active-passive-table-row {
  border-top: 1px solid rgba(20, 51, 79, 0.08);
}

.active-passive-grammar-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.42fr) minmax(260px, 0.78fr);
  gap: 1rem;
  margin-top: 1.25rem;
}

.active-passive-grammar-main,
.active-passive-warning-card,
.active-passive-detail-list details,
.active-passive-example-grid article {
  border: 1px solid rgba(20, 51, 79, 0.12);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 16px 42px rgba(20, 51, 79, 0.08);
}

.active-passive-grammar-main,
.active-passive-warning-card {
  display: grid;
  gap: 0.85rem;
  padding: 1.15rem;
}

.active-passive-grammar-main h3,
.active-passive-warning-card h3,
.active-passive-grammar-main p,
.active-passive-warning-card p {
  margin: 0;
}

.active-passive-grammar-main h3,
.active-passive-warning-card h3 {
  color: var(--color-primary-dark);
}

.active-passive-grammar-main p,
.active-passive-warning-card p {
  color: var(--color-muted);
  line-height: 1.65;
}

.active-passive-decision-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
}

.active-passive-decision-grid span {
  display: grid;
  gap: 0.2rem;
  min-height: 5.5rem;
  padding: 0.85rem;
  border-radius: 18px;
  color: var(--color-primary-dark);
  background: rgba(37, 99, 235, 0.08);
  font-weight: 850;
}

.active-passive-decision-grid strong {
  color: var(--color-ink);
  font-size: 0.88rem;
}

.active-passive-warning-card {
  background:
    radial-gradient(circle at top right, rgba(244, 196, 48, 0.18), transparent 12rem),
    #fff;
}

.active-passive-detail-list {
  display: grid;
  gap: 0.8rem;
  margin-top: 1rem;
}

.active-passive-detail-list details {
  overflow: hidden;
  padding: 0.95rem 1rem;
}

.active-passive-detail-list summary {
  color: var(--color-ink);
  cursor: pointer;
  font-weight: 950;
}

.active-passive-detail-list p {
  margin: 0.75rem 0 0;
  color: var(--color-muted);
  line-height: 1.58;
}

.active-passive-examples-section {
  background:
    radial-gradient(circle at bottom left, rgba(244, 196, 48, 0.12), transparent 20rem),
    rgba(255, 255, 255, 0.9);
}

.active-passive-example-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.active-passive-example-grid article {
  display: grid;
  gap: 0.55rem;
  padding: 1rem;
}

.active-passive-example-grid span {
  justify-self: start;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  color: var(--color-primary-dark);
  background: rgba(244, 196, 48, 0.2);
  font-size: 0.78rem;
  font-weight: 950;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.active-passive-example-grid strong {
  color: var(--color-ink);
  line-height: 1.45;
}

.active-passive-example-grid p {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.52;
}

.active-passive-guided-practice {
  margin-top: 1.4rem;
}

.active-passive-builder-card {
  display: grid;
  gap: 1rem;
  padding: 1rem;
}

.active-passive-builder-card.is-correct {
  border-color: rgba(34, 197, 94, 0.28);
  background: linear-gradient(180deg, rgba(34, 197, 94, 0.08), #fff);
}

.active-passive-builder-card.is-wrong {
  border-color: rgba(239, 68, 68, 0.26);
  background: linear-gradient(180deg, rgba(239, 68, 68, 0.08), #fff);
}

.active-passive-builder-top,
.active-passive-question-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.active-passive-source,
.active-passive-prompt p {
  margin: 0;
  color: var(--color-ink);
  line-height: 1.7;
}

.active-passive-answer,
.active-passive-bank,
.active-passive-response {
  display: grid;
  gap: 0.7rem;
  align-content: start;
  padding: 0.85rem;
  border-radius: 18px;
  background: rgba(245, 247, 250, 0.95);
  border: 1px dashed rgba(20, 51, 79, 0.16);
}

.active-passive-answer,
.active-passive-bank {
  display: flex;
  flex-wrap: wrap;
  min-height: 4.1rem;
}

.active-passive-answer.is-empty::before {
  content: "Aquí se construye la transformación";
  color: rgba(88, 112, 135, 0.7);
  align-self: center;
}

.active-passive-answer.is-correct,
.active-passive-response.is-correct {
  border-style: solid;
  border-color: rgba(34, 197, 94, 0.34);
  background: rgba(220, 252, 231, 0.74);
}

.active-passive-answer.is-wrong,
.active-passive-response.is-wrong {
  border-style: solid;
  border-color: rgba(239, 68, 68, 0.34);
  background: rgba(254, 226, 226, 0.74);
  cursor: pointer;
}

.active-passive-answer.is-solution,
.active-passive-response.is-solution {
  border-style: solid;
  border-color: rgba(37, 99, 235, 0.34);
  background: rgba(219, 234, 254, 0.76);
  cursor: pointer;
}

.active-passive-question-card {
  display: grid;
  gap: 1rem;
  padding: 1rem;
}

.active-passive-question-card.is-correct {
  border-color: rgba(34, 197, 94, 0.28);
  background: linear-gradient(180deg, rgba(34, 197, 94, 0.08), #fff);
}

.active-passive-question-card.is-wrong {
  border-color: rgba(239, 68, 68, 0.24);
  background: linear-gradient(180deg, rgba(239, 68, 68, 0.08), #fff);
}

.active-passive-prompt {
  display: grid;
  gap: 0.4rem;
}

.active-passive-question-state {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2rem;
  padding: 0.28rem 0.72rem;
  border-radius: 999px;
  background: rgba(20, 51, 79, 0.08);
  color: var(--color-primary-dark);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.04em;
}

.active-passive-question-state.is-pending {
  background: rgba(20, 51, 79, 0.08);
}

.active-passive-question-state.is-correct {
  background: rgba(34, 197, 94, 0.16);
  color: #166534;
}

.active-passive-question-state.is-wrong {
  background: rgba(245, 158, 11, 0.16);
  color: #9a6700;
}

.active-passive-question-state.is-solution {
  background: rgba(37, 99, 235, 0.14);
  color: #1d4ed8;
}

.active-passive-prompt strong,
.active-passive-response label {
  color: var(--color-primary-dark);
}

.active-passive-response {
  min-height: 0;
  grid-template-rows: auto minmax(2.7rem, auto) auto;
}

.active-passive-input {
  display: block;
  width: 100%;
  min-height: 2.7rem;
  padding: 0.62rem 0.92rem;
  margin: 0;
  box-sizing: border-box;
  border-radius: 18px;
  border: 1px solid rgba(20, 51, 79, 0.14);
  background: #fff;
  color: var(--color-ink);
  font: inherit;
  line-height: 1.35;
  vertical-align: middle;
  overflow: hidden;
  resize: none;
}

.active-passive-input[data-ready="true"] {
  box-shadow: inset 0 0 0 1px rgba(37, 99, 235, 0.12);
}

.active-passive-input:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.22);
  border-color: rgba(37, 99, 235, 0.48);
}

.active-passive-input.is-correct {
  color: #0f8a44;
  border-color: rgba(34, 197, 94, 0.34);
}

.active-passive-input.is-wrong {
  color: #c03636;
  border-color: rgba(239, 68, 68, 0.34);
}

.active-passive-input.is-solution {
  color: #0f49c7;
  border-color: rgba(37, 99, 235, 0.34);
  background: rgba(239, 246, 255, 0.9);
}

.active-passive-list {
  display: grid;
  gap: 1rem;
}

.active-passive-launch-card {
  grid-template-columns: minmax(0, 1fr) auto auto;
}

.active-passive-modal-dialog {
  width: min(58rem, calc(100% - 1.4rem));
}

.active-passive-modal-dialog {
  max-height: min(76vh, 42rem);
  overflow: hidden;
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto auto;
  gap: 0.75rem;
  padding: 0.95rem 0.95rem 0.85rem;
}

.active-passive-modal-progress {
  display: grid;
  gap: 0.45rem;
  margin-top: 0.55rem;
}

.active-passive-modal-progress-top {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  align-items: center;
  justify-content: space-between;
}

.active-passive-modal-progress-top strong {
  color: var(--color-primary-dark);
  font-size: 0.92rem;
}

.active-passive-modal-progress-top span {
  color: var(--color-muted);
  font-size: 0.84rem;
  font-weight: 700;
}

.active-passive-modal-progress-bar {
  overflow: hidden;
  width: 100%;
  height: 0.72rem;
  border-radius: 999px;
  background: rgba(20, 51, 79, 0.1);
}

.active-passive-modal-progress-bar span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #2563eb, #14b8a6);
  transition: width 0.2s ease, background 0.2s ease;
}

.popup-inline-note {
  margin: 0;
  padding: 0.8rem 1rem;
  border-radius: 0.95rem;
  background: rgba(37, 99, 235, 0.08);
  color: #1e3a5f;
  font-size: 0.92rem;
  line-height: 1.45;
}

.active-passive-modal-dialog .active-passive-list {
  margin-top: 0.2rem;
}

.active-passive-finish-card {
  display: grid;
  gap: 0.75rem;
  place-items: center;
  width: min(560px, 100%);
  justify-self: center;
  padding: 1.35rem;
  border: 1px solid rgba(37, 99, 235, 0.16);
  border-radius: 24px;
  text-align: center;
  background:
    radial-gradient(circle at 18% 14%, rgba(244, 196, 48, 0.22), transparent 10rem),
    linear-gradient(145deg, rgba(255, 255, 255, 0.96), rgba(237, 246, 255, 0.92));
  box-shadow: 0 18px 48px rgba(20, 51, 79, 0.14);
}

.active-passive-finish-card .eyebrow {
  margin: 0;
  color: var(--color-primary-dark);
}

.active-passive-finish-card strong {
  color: #14334f;
  font-size: clamp(1.55rem, 4vw, 2.45rem);
  line-height: 1.05;
}

.active-passive-finish-card p {
  max-width: 44ch;
  margin: 0;
  color: var(--color-muted);
  line-height: 1.58;
}

.active-passive-finish-card span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.2rem;
  padding: 0.35rem 0.82rem;
  border-radius: 999px;
  color: #14334f;
  background: var(--color-accent);
  font-weight: 900;
}

.active-passive-modal-dialog .active-passive-question-card {
  gap: 0.75rem;
  padding: 0.82rem;
}

.active-passive-modal-dialog .active-passive-prompt p {
  line-height: 1.5;
}

.active-passive-modal-dialog .active-passive-response {
  gap: 0.48rem;
  padding: 0.62rem;
}

.active-passive-modal-dialog .active-passive-input {
  min-height: 2.35rem;
  padding: 0.5rem 0.78rem;
  font-size: 0.94rem;
  line-height: 1.3;
}

.active-passive-modal-dialog .popup-inline-note {
  margin-top: 0.15rem;
  padding: 0.68rem 0.88rem;
  font-size: 0.86rem;
  line-height: 1.38;
}

.active-passive-modal-dialog .exam-actions {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.65rem;
  margin-top: 0.35rem;
}

.active-passive-modal-dialog .exam-actions .button {
  width: 100%;
  min-height: 2.55rem;
  padding-block: 0.52rem;
}

@media (max-width: 920px) {
  .timer-grammar-layout {
    grid-template-columns: 1fr;
  }

  .timer-decision-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .timer-decision-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 920px) {
  .active-passive-grammar-layout,
  .active-passive-example-grid {
    grid-template-columns: 1fr;
  }

  .active-passive-decision-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .active-passive-modal-dialog .exam-actions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .active-passive-decision-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 780px) {
  .scramble-card-top {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 700px) {
  .access-debug-toggle {
    right: 0.75rem;
    bottom: 0.75rem;
    width: min(16rem, calc(100% - 1.5rem));
  }
}

.hero-panel,
.feature-card,
.content-section {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-panel);
}

.hero-panel {
  display: grid;
  align-content: end;
  gap: 0.6rem;
  min-height: 22rem;
  padding: 1.4rem;
  background:
    radial-gradient(circle at top right, rgba(244, 196, 48, 0.46), transparent 11rem),
    linear-gradient(160deg, rgba(20, 51, 79, 0.92), rgba(37, 99, 235, 0.82)),
    #14334f;
  color: #fff;
}

.hero-panel span {
  width: max-content;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  color: #14334f;
  background: var(--color-accent);
  font-weight: 900;
}

.hero-panel strong {
  max-width: 9ch;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 0.96;
  letter-spacing: -0.05em;
}

.hero-panel p {
  color: rgba(255, 255, 255, 0.82);
}

.verb-panel {
  align-content: space-between;
}

.verb-stack {
  display: grid;
  gap: 0.45rem;
}

.verb-stack strong {
  display: block;
  max-width: none;
  padding: 0.55rem 0.8rem;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.12);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.16);
}

.content-section {
  margin-top: 1.5rem;
  padding: 1.6rem;
}

.section-heading {
  position: relative;
  max-width: 760px;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.4rem);
  letter-spacing: -0.04em;
}

.section-heading p:not(.eyebrow) {
  color: var(--color-muted);
  line-height: 1.7;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(235px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.feature-card {
  position: relative;
  overflow: hidden;
  padding: 1.2rem;
}

.feature-card::after {
  content: "";
  position: absolute;
  top: -2.5rem;
  right: -2.5rem;
  width: 7rem;
  height: 7rem;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.08);
}

.feature-number {
  display: inline-flex;
  margin-bottom: 1.8rem;
  color: var(--color-primary-dark);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.15em;
}

.feature-card h3 {
  margin: 0 0 0.6rem;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
}

.feature-card p {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.65;
}

.intro-route {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(300px, 1.08fr);
  gap: 1.4rem;
  align-items: start;
}

.form-ladder {
  display: grid;
  gap: 0.85rem;
}

.form-ladder article {
  position: relative;
  padding: 1.05rem 1.15rem 1.05rem 1.4rem;
  border: 1px solid var(--color-line);
  border-radius: 22px;
  background:
    linear-gradient(90deg, rgba(244, 196, 48, 0.2), transparent 38%),
    #fff;
}

.form-ladder article::before {
  content: "";
  position: absolute;
  inset: 1rem auto 1rem 0.75rem;
  width: 4px;
  border-radius: 999px;
  background: var(--color-primary);
}

.form-ladder h3,
.form-ladder p {
  margin: 0;
}

.form-ladder h3 {
  font-size: 1.35rem;
}

.form-ladder p {
  margin-top: 0.35rem;
  color: var(--color-muted);
  line-height: 1.55;
}

.mode-card {
  display: flex;
  min-height: 17rem;
  flex-direction: column;
  align-items: flex-start;
}

.mode-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.8rem;
  min-height: 2.8rem;
  margin-bottom: 1.2rem;
  padding: 0 0.55rem;
  border-radius: 16px;
  color: #14334f;
  background: var(--color-accent);
  font-weight: 900;
  box-shadow: 0 14px 28px rgba(244, 196, 48, 0.28);
}

.mode-card a {
  display: inline-flex;
  margin-top: auto;
  padding-top: 1rem;
  color: var(--color-primary-dark);
  font-weight: 900;
  text-decoration: none;
}

.mode-card a::after {
  content: ">";
  margin-left: 0.45rem;
}

.routine-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.routine-strip article {
  position: relative;
  overflow: hidden;
  padding: 1.2rem;
  border: 1px solid rgba(37, 99, 235, 0.16);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 16px 40px rgba(20, 51, 79, 0.08);
}

.routine-strip article::after {
  content: "";
  position: absolute;
  right: -2rem;
  bottom: -2rem;
  width: 6rem;
  height: 6rem;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.09);
}

.routine-strip span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 999px;
  color: #fff;
  background: var(--color-primary);
  font-weight: 900;
}

.routine-strip strong {
  display: block;
  margin-top: 0.75rem;
  font-size: 1.3rem;
}

.routine-strip p {
  margin: 0.35rem 0 0;
  color: var(--color-muted);
  line-height: 1.55;
}

.materials-section {
  background:
    radial-gradient(circle at top right, rgba(37, 99, 235, 0.08), transparent 22rem),
    rgba(255, 255, 255, 0.86);
}

.two-col-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.theory-section {
  background:
    radial-gradient(circle at top left, rgba(244, 196, 48, 0.16), transparent 20rem),
    rgba(255, 255, 255, 0.86);
}

.pattern-grid {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.pattern-card {
  min-height: 16rem;
}

.pattern-card strong {
  color: var(--color-primary-dark);
}

.pattern-card p + p {
  margin-top: 0.75rem;
}

.study-tips-strip {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.flashcards-tips {
  margin-top: 1.2rem;
}

.study-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.62fr);
  gap: 1.2rem;
  align-items: stretch;
  padding: 1.8rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at top left, rgba(244, 196, 48, 0.3), transparent 19rem),
    linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(237, 246, 255, 0.86));
  box-shadow: var(--shadow-soft);
}

.flashcards-hero {
  grid-template-columns: minmax(0, 1.15fr) minmax(270px, 0.5fr);
}

.flashcards-info-panel {
  display: grid;
  align-content: end;
  gap: 0.85rem;
  min-height: 20rem;
  padding: 1.35rem;
  border: 1px solid rgba(20, 51, 79, 0.16);
  border-radius: var(--radius-md);
  color: #fff;
  background:
    radial-gradient(circle at top right, rgba(244, 196, 48, 0.42), transparent 10rem),
    linear-gradient(155deg, #14334f, #2563eb);
}

.flashcards-info-panel span {
  width: max-content;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  color: #14334f;
  background: var(--color-accent);
  font-weight: 900;
}

.flashcards-info-panel strong {
  max-width: 10ch;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 0.96;
  letter-spacing: -0.05em;
}

.flashcards-info-panel p {
  margin: 0;
  color: #fff;
  line-height: 1.65;
}

.study-hero h1 {
  max-width: 14ch;
  margin: 0;
  font-size: clamp(2.7rem, 6vw, 5.6rem);
  line-height: 0.95;
  letter-spacing: -0.06em;
}

.study-hero p:not(.eyebrow),
.pdf-panel p,
.exam-launch-card p {
  color: var(--color-muted);
  line-height: 1.7;
}

.study-hero .flashcards-info-panel p {
  color: #fff;
}

.pdf-panel {
  display: grid;
  align-content: start;
  padding: 1.35rem;
  border: 1px solid rgba(20, 51, 79, 0.16);
  border-radius: var(--radius-md);
  background:
    radial-gradient(circle at top right, rgba(37, 99, 235, 0.16), transparent 11rem),
    #fff;
}

.pdf-panel h2 {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  letter-spacing: -0.05em;
}

.pdf-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.45rem;
  margin-top: 0.85rem;
}

.pdf-list-featured {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.pdf-selector {
  position: relative;
  margin-top: 0.85rem;
}

.pdf-list a {
  display: grid;
  place-items: center;
  gap: 0.28rem;
  min-height: 3.7rem;
  padding: 0.4rem 0.2rem;
  border: 1px solid var(--color-line);
  border-radius: 14px;
  color: var(--color-primary-dark);
  background: #fffaf1;
  font-weight: 900;
  text-decoration: none;
}

.pdf-list a img {
  width: 1.2rem;
  height: 1.2rem;
  object-fit: contain;
}

.pdf-list a span {
  font-size: 0.82rem;
  line-height: 1;
}

.pdf-more-button {
  display: grid;
  place-items: center;
  min-height: 3.7rem;
  padding: 0.4rem 0.2rem;
  inline-size: 100%;
  border: 1px dashed rgba(37, 99, 235, 0.34);
  border-radius: 14px;
  color: var(--color-primary-dark);
  background: rgba(37, 99, 235, 0.08);
  font-size: 0.78rem;
  font-weight: 900;
  line-height: 1.05;
  text-align: center;
  white-space: normal;
  word-break: break-word;
  cursor: pointer;
  transition: transform 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

.pdf-more-button:hover,
.pdf-more-button:focus-visible,
.pdf-more-button.is-open {
  transform: translateY(-1px);
  border-color: rgba(37, 99, 235, 0.5);
  background: rgba(37, 99, 235, 0.14);
  outline: none;
}

.pdf-more-panel {
  position: absolute;
  left: 0;
  right: 0;
  top: calc(100% - 0.5rem);
  z-index: 4;
  padding: 0.9rem;
  border: 1px solid rgba(20, 51, 79, 0.14);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 18px 45px rgba(20, 51, 79, 0.16);
  backdrop-filter: blur(8px);
}

.pdf-list-expanded {
  margin-top: 0;
}

@media (max-width: 1220px) {
  .pdf-list-featured {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.theory-feature {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at top right, rgba(244, 196, 48, 0.32), transparent 18rem),
    radial-gradient(circle at bottom left, rgba(37, 99, 235, 0.1), transparent 18rem),
    rgba(255, 255, 255, 0.9);
}

.practice-section {
  background:
    linear-gradient(135deg, rgba(255, 250, 241, 0.95), rgba(255, 255, 255, 0.92)),
    #fff;
}

.example-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin-top: 1.4rem;
}

.guided-practice {
  margin-top: 1.4rem;
  padding: 1rem;
  border: 1px solid rgba(37, 99, 235, 0.16);
  border-radius: 24px;
  background:
    radial-gradient(circle at top right, rgba(244, 196, 48, 0.18), transparent 12rem),
    #fff;
}

.guided-practice-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
}

.guided-practice-copy {
  display: grid;
  gap: 0.45rem;
}

.guided-practice-head .eyebrow {
  margin: 0;
}

.guided-practice-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: center;
}

.guided-practice-head strong,
.guided-practice-pattern {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 4.5rem;
  min-height: 2.2rem;
  border-radius: 999px;
  color: #14334f;
  background: rgba(244, 196, 48, 0.92);
  font-weight: 900;
}

.guided-practice-pattern {
  min-width: auto;
  padding: 0.3rem 0.72rem;
  background: rgba(37, 99, 235, 0.1);
  color: var(--color-primary-dark);
}

.guided-practice-pattern-text {
  margin: 0;
  max-width: 24ch;
  color: var(--color-primary-dark);
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.35;
  text-align: right;
}

.guided-example-grid {
  grid-template-columns: minmax(0, 1fr);
}

.guided-example-grid .exam-card {
  border-width: 2px;
  transition: border-color 0.18s ease, background-color 0.18s ease, transform 0.18s ease;
}

.guided-example-grid .exam-card:not(:has(input.is-wrong)):has(input.is-correct) {
  border-color: rgba(21, 128, 61, 0.56);
  background: #f0fdf4;
  transform: translateY(-1px);
}

.guided-pattern {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: center;
  margin-top: -0.2rem;
}

.guided-pattern span {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  color: #14334f;
  background: var(--color-accent);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.guided-pattern strong {
  color: var(--color-primary-dark);
  font-size: 1rem;
}

.guided-note {
  margin: 0;
  padding: 0.72rem 0.85rem;
  border: 1px solid rgba(37, 99, 235, 0.12);
  border-radius: 16px;
  color: var(--color-muted);
  background: rgba(37, 99, 235, 0.07);
  line-height: 1.5;
}

.guided-status {
  margin: 0.9rem 0 0;
  padding: 0.75rem 0.9rem;
  border-radius: 16px;
  color: var(--color-muted);
  background: rgba(20, 51, 79, 0.06);
  font-weight: 800;
  line-height: 1.45;
}

.guided-status.is-wrong {
  color: #991b1b;
  background: #fff1f2;
}

.guided-status.is-correct {
  color: #166534;
  background: #dcfce7;
}

.flashcards-board {
  display: grid;
  gap: 1rem;
}

.timer-hero {
  grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.54fr);
}

.timer-info-panel {
  min-height: 18rem;
}

.timer-grammar-section {
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.12), transparent 22rem),
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(239, 246, 255, 0.84));
}

.timer-grammar-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(260px, 0.75fr);
  gap: 1rem;
  align-items: stretch;
}

.timer-grammar-main,
.timer-warning-card {
  display: grid;
  gap: 0.85rem;
  padding: 1.15rem;
  border: 1px solid rgba(20, 51, 79, 0.12);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 16px 42px rgba(20, 51, 79, 0.08);
}

.timer-grammar-main h3,
.timer-warning-card h3,
.timer-grammar-main p,
.timer-warning-card p {
  margin: 0;
}

.timer-grammar-main h3,
.timer-warning-card h3 {
  color: var(--color-primary-dark);
}

.timer-grammar-main p,
.timer-warning-card p {
  color: var(--color-muted);
  line-height: 1.65;
}

.timer-decision-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}

.timer-decision-grid span {
  display: grid;
  gap: 0.2rem;
  min-height: 4.8rem;
  padding: 0.85rem;
  border-radius: 18px;
  background: rgba(37, 99, 235, 0.08);
  color: var(--color-primary-dark);
  font-weight: 850;
}

.timer-decision-grid strong {
  color: var(--color-ink);
  font-size: 0.88rem;
}

.timer-warning-card {
  background:
    radial-gradient(circle at top right, rgba(244, 196, 48, 0.16), transparent 12rem),
    #fff;
}

.timer-mode-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.timer-tip-grid {
  margin-bottom: 1.2rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.timer-tip-card {
  display: grid;
  gap: 0.75rem;
}

.timer-mode-card {
  display: grid;
  gap: 0.9rem;
}

.timer-mode-card.is-active {
  border-color: rgba(37, 99, 235, 0.34);
  box-shadow: 0 18px 40px rgba(37, 99, 235, 0.14);
}

.timer-mode-card .button {
  margin-top: auto;
}

.timer-summary-card .grade-card strong {
  font-size: clamp(2.5rem, 6vw, 4.4rem);
}

#practica,
#materiales,
#timer-summary,
#stats-overview-panel,
#stats-pages-panel,
#stats-chart-panel,
#stats-line-panel {
  scroll-margin-top: 4.95rem;
}

#stats-line-panel {
  padding: 1.26rem;
}

#stats-line-panel .section-heading h2 {
  font-size: clamp(1.8rem, 3.6vw, 3.06rem);
}

#stats-line-panel .section-heading .eyebrow {
  margin-bottom: 0.55rem;
}

#stats-line-panel .section-copy {
  font-size: 0.95rem;
  line-height: 1.58;
}

.timer-inline-modes {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.timer-inline-mode {
  min-height: 2.55rem;
  padding: 0.55rem 0.9rem;
  border: 1px solid rgba(20, 51, 79, 0.16);
  border-radius: 999px;
  color: var(--color-primary-dark);
  background: #fff;
  font-weight: 900;
  cursor: pointer;
}

.timer-inline-mode.is-active {
  color: #fff;
  border-color: var(--color-primary);
  background: var(--color-primary);
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.2);
}

.timer-game-section {
  background:
    radial-gradient(circle at top right, rgba(37, 99, 235, 0.08), transparent 18rem),
    rgba(255, 255, 255, 0.92);
}

.timer-game-shell {
  display: grid;
  gap: 1rem;
}

.timer-question-head {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  align-items: center;
}

.timer-chip {
  display: inline-flex;
  align-items: center;
  min-height: 2.2rem;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  color: #fff;
  background: var(--color-primary);
  font-size: 0.86rem;
  font-weight: 900;
}

.timer-chip-soft {
  color: var(--color-primary-dark);
  background: rgba(37, 99, 235, 0.1);
}

.timer-question-card {
  display: grid;
  gap: 1rem;
  padding: 1.2rem;
  border: 1px solid var(--color-line);
  border-radius: 24px;
  background: #fff;
}

.timer-question-card h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.04em;
}

.timer-question-note {
  margin: -0.35rem 0 0;
  color: var(--color-muted);
  line-height: 1.55;
}

.timer-modal-top .exam-modal-close {
  align-self: start;
}

.timer-modal-dialog {
  width: min(930px, 100%);
  max-height: min(80vh, 720px);
  overflow: hidden;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  padding: 0.9rem 0.9rem 0.8rem;
}

.timer-board {
  min-height: 0;
  gap: 0.7rem;
}

.timer-popup-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.8rem;
  align-items: center;
}

.timer-progress-note {
  margin: 0.15rem 0 0;
  color: var(--color-muted);
  font-size: 0.88rem;
}

.timer-progress-rail {
  position: relative;
  overflow: hidden;
  height: 0.72rem;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.18);
}

.timer-progress-fill {
  display: block;
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, rgba(37, 99, 235, 0.92), rgba(14, 165, 233, 0.92));
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.18);
  transition: width 220ms ease;
}

.timer-clock-card {
  display: grid;
  justify-items: center;
  align-content: center;
  min-width: 6.1rem;
  min-height: 6.1rem;
  padding: 0.65rem;
  border: 3px solid rgba(34, 197, 94, 0.35);
  border-radius: 22px;
  background: rgba(220, 252, 231, 0.72);
  color: #166534;
  box-shadow: 0 12px 28px rgba(20, 51, 79, 0.1);
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.timer-clock-label {
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.timer-clock-card strong {
  font-size: clamp(1.9rem, 4vw, 2.9rem);
  line-height: 1;
}

.timer-clock-card.is-safe {
  border-color: rgba(34, 197, 94, 0.35);
  background: rgba(220, 252, 231, 0.72);
  color: #166534;
}

.timer-clock-card.is-mid {
  border-color: rgba(234, 179, 8, 0.42);
  background: rgba(254, 249, 195, 0.78);
  color: #92400e;
}

.timer-clock-card.is-danger {
  border-color: rgba(239, 68, 68, 0.42);
  background: rgba(254, 226, 226, 0.84);
  color: #b91c1c;
}

.timer-question-card-modal {
  padding: 0.85rem 0.9rem 0.8rem;
  border-radius: 22px;
  gap: 0.68rem;
}

.timer-question-card-modal .eyebrow {
  margin-bottom: 0.12rem;
}

.timer-question-card-modal h2 {
  font-size: clamp(1.45rem, 2.5vw, 2.05rem);
}

.timer-question-card-modal .exam-actions {
  gap: 0.55rem;
}

.timer-question-card-modal .button {
  min-height: 2.45rem;
  padding-block: 0.52rem;
}

.timer-question-card-modal .exam-field {
  gap: 0.4rem;
}

.timer-question-card-modal .exam-field input {
  min-height: 2.7rem;
}

@media (min-width: 960px) {
  .timer-modal-dialog {
    max-height: min(76vh, 680px);
    padding: 0.8rem 0.85rem 0.72rem;
  }

  .timer-board {
    gap: 0.62rem;
  }

  .timer-popup-head {
    gap: 0.55rem;
  }

  .timer-question-note {
    font-size: 0.9rem;
    line-height: 1.38;
  }

  .timer-question-card-modal .exam-actions {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .timer-progress-note {
    font-size: 0.83rem;
  }
}

.timer-review-card input.is-answer {
  color: #1d4ed8;
  border-color: rgba(29, 78, 216, 0.34);
  background: rgba(219, 234, 254, 0.68);
}

.timer-review-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.9rem;
  margin-bottom: 1rem;
}

.timer-review-summary article {
  display: grid;
  gap: 0.35rem;
  padding: 1rem 1.05rem;
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-radius: 22px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.96), rgba(244, 248, 255, 0.96));
  box-shadow: 0 16px 32px rgba(15, 23, 42, 0.05);
}

.timer-review-summary span {
  color: var(--color-primary);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 900;
  letter-spacing: -0.04em;
}

.timer-review-summary strong {
  color: var(--color-ink);
}

.timer-review-summary p {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.5;
}

.flashcards-launch-card {
  grid-template-columns: minmax(0, 1fr) auto;
}

.flashcards-progress {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  padding: 0.9rem 1rem;
  border: 1px solid rgba(37, 99, 235, 0.14);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.76);
}

.flashcards-progress .eyebrow {
  margin: 0;
}

.flashcards-progress strong {
  display: inline-flex;
  min-width: 5rem;
  min-height: 2.35rem;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  color: #14334f;
  background: var(--color-accent);
  font-weight: 900;
}

.flashcard-stage {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 31rem;
  overflow: hidden;
  border-radius: 28px;
  background:
    radial-gradient(circle at 20% 10%, rgba(244, 196, 48, 0.18), transparent 15rem),
    radial-gradient(circle at 80% 90%, rgba(37, 99, 235, 0.12), transparent 16rem),
    rgba(255, 255, 255, 0.66);
}

.flashcard-stack-shell {
  position: relative;
  width: min(620px, 100%);
  min-height: 31rem;
  display: grid;
  place-items: center;
}

.stack-preview-card {
  position: absolute;
  width: min(560px, 100%);
  min-height: 26rem;
  border: 1px solid rgba(20, 51, 79, 0.1);
  border-radius: 22px;
  background:
    linear-gradient(155deg, rgba(255, 255, 255, 0.92), rgba(237, 246, 255, 0.92));
  box-shadow: 0 16px 46px rgba(20, 51, 79, 0.1);
  pointer-events: none;
}

.stack-preview-card span {
  position: absolute;
  top: 1rem;
  left: 1rem;
  color: var(--color-primary-dark);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.14em;
}

.stack-preview-card-1 {
  z-index: 1;
  transform: translate(-18px, 18px) rotate(-4deg);
}

.stack-preview-card-2 {
  z-index: 0;
  transform: translate(-34px, 34px) rotate(-7deg);
}

.flashcard-card {
  position: relative;
  z-index: 2;
  width: min(560px, 100%);
  min-height: 26rem;
  border-width: 2px;
  background:
    radial-gradient(circle at top right, rgba(244, 196, 48, 0.15), transparent 12rem),
    #fff;
  box-shadow:
    0 24px 70px rgba(20, 51, 79, 0.2),
    -18px 18px 0 rgba(37, 99, 235, 0.08),
    -34px 34px 0 rgba(244, 196, 48, 0.16);
  transform-origin: center;
  transition: transform 0.34s ease, opacity 0.34s ease;
}

.playing-card.is-leaving {
  opacity: 0;
  transform: translateX(130vw) rotate(15deg);
}

.flashcard-card.is-card-correct {
  border-color: rgba(21, 128, 61, 0.64);
  background: #f0fdf4;
}

.flashcard-card.is-card-wrong {
  border-color: rgba(220, 38, 38, 0.52);
  background: #fff1f2;
}

.flashcard-card:has(input.is-wrong) {
  border-color: rgba(220, 38, 38, 0.45);
}

.flashcard-card:not(:has(input.is-wrong)):has(input.is-correct) {
  border-color: rgba(21, 128, 61, 0.56);
  background: #f0fdf4;
}

.flashcards-finish-card {
  display: grid;
  gap: 0.75rem;
  place-items: center;
  width: min(520px, 100%);
  padding: 1.35rem;
  border: 1px solid rgba(37, 99, 235, 0.16);
  border-radius: 24px;
  text-align: center;
  background:
    radial-gradient(circle at 18% 14%, rgba(244, 196, 48, 0.22), transparent 10rem),
    linear-gradient(145deg, rgba(255, 255, 255, 0.96), rgba(237, 246, 255, 0.92));
  box-shadow: 0 18px 48px rgba(20, 51, 79, 0.14);
}

.flashcards-finish-card .eyebrow {
  margin: 0;
  color: var(--color-primary-dark);
}

.flashcards-finish-card strong {
  color: #14334f;
  font-size: clamp(1.55rem, 4vw, 2.45rem);
  line-height: 1.05;
}

.flashcards-finish-card p {
  max-width: 42ch;
  margin: 0;
  color: var(--color-muted);
  line-height: 1.58;
}

.flashcards-finish-card span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.2rem;
  padding: 0.35rem 0.82rem;
  border-radius: 999px;
  color: #14334f;
  background: var(--color-accent);
  font-weight: 900;
}

.flashcards-modal-dialog {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  width: min(700px, 100%);
  max-height: min(82vh, 700px);
  padding: 0.9rem;
  overflow: hidden;
  background:
    radial-gradient(circle at 16% 8%, rgba(244, 196, 48, 0.2), transparent 15rem),
    rgba(255, 255, 255, 0.94);
}

.flashcards-modal-dialog .flashcards-board {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto auto;
  gap: 0.65rem;
  min-height: 0;
}

.flashcards-modal-dialog .flashcards-progress {
  padding: 0.55rem 0.75rem;
  border-radius: 16px;
}

.flashcards-modal-dialog .flashcards-progress strong {
  min-height: 2rem;
}

.flashcards-modal-dialog .flashcard-stage {
  min-height: min(48vh, 22.5rem);
  padding: 0.35rem;
  border-radius: 22px;
}

.flashcards-modal-dialog .flashcard-stack-shell {
  width: min(500px, 100%);
  min-height: min(46vh, 21.5rem);
}

.flashcards-modal-dialog .stack-preview-card {
  width: min(455px, 100%);
  min-height: min(39vh, 18.4rem);
  border-radius: 18px;
  box-shadow: 0 12px 30px rgba(20, 51, 79, 0.08);
}

.flashcards-modal-dialog .stack-preview-card span {
  top: 0.7rem;
  left: 0.8rem;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
}

.flashcards-modal-dialog .stack-preview-card-1 {
  transform: translate(-12px, 12px) rotate(-3deg);
}

.flashcards-modal-dialog .stack-preview-card-2 {
  transform: translate(-23px, 23px) rotate(-5deg);
}

.flashcards-modal-dialog .flashcard-card {
  width: min(455px, 100%);
  min-height: min(39vh, 18.4rem);
  gap: 0.55rem;
  padding: 0.78rem;
  border-radius: 18px;
  box-shadow:
    0 16px 40px rgba(20, 51, 79, 0.16),
    -10px 10px 0 rgba(37, 99, 235, 0.07),
    -20px 20px 0 rgba(244, 196, 48, 0.13);
}

.flashcards-modal-dialog .exam-card-head strong {
  font-size: 1.15rem;
}

.flashcards-modal-dialog .exam-field {
  gap: 0.24rem;
}

.flashcards-modal-dialog .exam-field span {
  font-size: 0.76rem;
}

.flashcards-modal-dialog .exam-field input {
  min-height: 2.38rem;
  padding-block: 0.48rem;
}

.flashcards-modal-dialog .exam-card-feedback,
.flashcards-modal-dialog .guided-status {
  min-height: 1.05rem;
  font-size: 0.86rem;
  line-height: 1.28;
}

.flashcards-modal-dialog .exam-actions {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.55rem;
  margin-top: 0;
}

.flashcards-modal-dialog .exam-actions .button {
  width: 100%;
  min-height: 2.45rem;
  padding-block: 0.48rem;
}

.exam-review-section .flashcard-submit-arrow {
  display: none !important;
}

.flashcards-modal-top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 0.55rem;
  align-items: center;
  margin-bottom: 0.55rem;
}

.flashcards-modal-top h2 {
  margin: 0;
  font-size: clamp(1.15rem, 2.4vw, 1.55rem);
  letter-spacing: 0;
}

.flashcards-modal-top p {
  margin: 0;
  padding: 0.34rem 0.65rem;
  border-radius: 999px;
  color: #14334f;
  background: var(--color-accent);
  font-weight: 900;
  font-size: 0.88rem;
  white-space: nowrap;
}

.exam-field-last {
  position: relative;
}

.flashcard-submit-arrow {
  position: absolute;
  right: 0.55rem;
  bottom: 0.52rem;
  display: none;
  width: 2.15rem;
  height: 2.15rem;
  border: 0;
  border-radius: 999px;
  color: #fff;
  background: var(--color-primary);
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.28);
  cursor: pointer;
  font-weight: 900;
  line-height: 1;
}

.exam-field-last input {
  padding-right: 3.2rem;
}

.exam-field-last:focus-within .flashcard-submit-arrow {
  display: grid;
  place-items: center;
}

@media (hover: none), (pointer: coarse) {
  .flashcard-submit-arrow {
    width: 2.35rem;
    height: 2.35rem;
  }
}

.exam-launch-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(150px, 190px) auto;
  gap: 1rem;
  align-items: center;
  margin-top: 1.5rem;
  padding: 1.25rem;
  border: 1px solid rgba(20, 51, 79, 0.14);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 18px 50px rgba(20, 51, 79, 0.1);
}

.exam-launch-card h2 {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 3rem);
  letter-spacing: -0.05em;
}

.exam-launch-card .grade-card {
  max-width: 190px;
}

.exam-launch-copy {
  display: grid;
  gap: 0.85rem;
}

.exam-launch-copy p {
  margin: 0;
}

.exam-filter-panel {
  margin-top: 0.35rem;
  padding: 0.9rem;
  border: 1px solid rgba(37, 99, 235, 0.14);
  border-radius: 22px;
  background:
    radial-gradient(circle at top right, rgba(244, 196, 48, 0.18), transparent 10rem),
    rgba(255, 250, 241, 0.86);
}

.exam-filter-panel .eyebrow {
  margin-bottom: 0.65rem;
}

.exam-filter-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.exam-filter {
  min-height: 2.45rem;
  border: 1px solid rgba(20, 51, 79, 0.16);
  border-radius: 999px;
  padding: 0.55rem 0.78rem;
  color: var(--color-primary-dark);
  background: #fff;
  cursor: pointer;
  font-weight: 900;
}

.exam-filter.is-active {
  color: #fff;
  border-color: var(--color-primary);
  background: var(--color-primary);
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.2);
}

.exam-filter-help {
  margin: 0.75rem 0 0;
  color: var(--color-muted);
  font-size: 0.94rem;
  line-height: 1.55;
}

.exam-review-section {
  background:
    radial-gradient(circle at top right, rgba(37, 99, 235, 0.1), transparent 20rem),
    rgba(255, 255, 255, 0.9);
}

.review-grade-card {
  display: grid;
  gap: 0.35rem;
  margin: 0 0 1rem;
  padding: 1rem 1.1rem;
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(255, 255, 255, 0.9));
  color: var(--color-ink);
}

.review-grade-card span {
  color: var(--color-muted);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.review-grade-card strong {
  color: var(--color-primary-dark);
  font-size: clamp(1.6rem, 5vw, 2.25rem);
  line-height: 1;
}

.review-grade-card p {
  max-width: 70ch;
  margin: 0;
  color: #385168;
  font-weight: 750;
  line-height: 1.45;
}

.exam-modal[hidden] {
  display: none !important;
}

.exam-modal {
  position: fixed;
  inset: 0;
  z-index: 110;
  display: grid;
  place-items: center;
  padding: 1rem;
}

.exam-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(20, 51, 79, 0.58);
  backdrop-filter: blur(8px);
}

.exam-modal-dialog {
  position: relative;
  width: min(1120px, 100%);
  max-height: min(88vh, 900px);
  overflow: auto;
  padding: 1.25rem;
  border: 1px solid rgba(255, 255, 255, 0.34);
  border-radius: 28px;
  background: #fffaf1;
  box-shadow: 0 30px 90px rgba(20, 51, 79, 0.32);
}

.popup-review-notice-dialog {
  max-width: 34rem;
}

.popup-review-notice-header p,
.popup-review-notice-header h2,
.popup-review-notice-header .eyebrow {
  max-width: 100%;
}

.popup-review-notice-body {
  padding: 0 1.5rem 1.1rem;
}

.popup-review-notice-check {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  font-size: 0.95rem;
  line-height: 1.45;
  color: #334155;
  cursor: pointer;
}

.popup-review-notice-check input {
  margin-top: 0.16rem;
  accent-color: #2563eb;
}

.popup-review-notice-actions {
  padding-top: 0;
}

.exam-modal-header {
  position: relative;
  z-index: 1;
  isolation: isolate;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
}

.exam-modal-header h2 {
  margin: 0;
  font-size: clamp(1.9rem, 4vw, 3.4rem);
  letter-spacing: -0.05em;
}

.exam-modal-header p:not(.eyebrow) {
  color: var(--color-muted);
  line-height: 1.65;
}

.exam-modal-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 0.9rem;
}

.exam-modal-pill {
  display: inline-flex;
  align-items: center;
  min-height: 2.2rem;
  padding: 0.35rem 0.8rem;
  border: 1px solid rgba(37, 99, 235, 0.16);
  border-radius: 999px;
  color: var(--color-primary-dark);
  background: rgba(37, 99, 235, 0.08);
  font-size: 0.9rem;
  font-weight: 800;
}

.exam-modal-close {
  position: relative;
  z-index: 2;
  overflow: hidden;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 3.35rem;
  height: 3.35rem;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  color: transparent;
  background: #fff;
  cursor: pointer;
  font-size: 0;
  line-height: 0;
  box-shadow: 0 12px 28px rgba(20, 51, 79, 0.14);
}

.exam-modal-close::before {
  content: "\00D7";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--color-primary-dark);
  font-size: 1.55rem;
  font-weight: 900;
  line-height: 1;
}

.exam-modal-close:hover,
.exam-modal-close:focus-visible {
  border-color: var(--color-primary);
  background: var(--color-primary);
  outline: none;
}

.exam-modal-close:hover::before,
.exam-modal-close:focus-visible::before {
  color: #fff;
}

body.modal-open {
  overflow: hidden;
}

.exam-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(230px, 0.32fr);
  gap: 1rem;
  align-items: stretch;
  padding: 1.7rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at top right, rgba(244, 196, 48, 0.3), transparent 18rem),
    rgba(255, 255, 255, 0.84);
  box-shadow: var(--shadow-soft);
}

.exam-hero h1 {
  max-width: 13ch;
  margin: 0;
  font-size: clamp(2.7rem, 6vw, 5.4rem);
  line-height: 0.95;
  letter-spacing: -0.06em;
}

.exam-hero p:not(.eyebrow),
.grade-card p {
  color: var(--color-muted);
  line-height: 1.65;
}

.grade-card {
  display: grid;
  align-content: center;
  justify-items: center;
  padding: 1.2rem;
  border: 4px solid var(--grade-ring, rgba(239, 68, 68, 0.42));
  border-radius: 999px;
  color: var(--grade-text, #fff7f7);
  text-align: center;
  aspect-ratio: 1;
  background:
    radial-gradient(circle at 28% 22%, rgba(255, 255, 255, 0.38), transparent 30%),
    linear-gradient(160deg, var(--grade-base, #ef4444), var(--grade-soft, rgba(239, 68, 68, 0.18)));
  box-shadow: 0 18px 44px rgba(20, 51, 79, 0.2);
}

.grade-card.is-pending {
  border-color: rgba(20, 51, 79, 0.14);
  color: #fff;
  background: linear-gradient(150deg, #14334f, #2563eb);
}

.grade-card.is-pending p {
  display: none;
}

.grade-card span {
  color: currentColor;
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.grade-card strong {
  font-size: clamp(3rem, 8vw, 5.6rem);
  line-height: 1;
}

.grade-card p {
  margin: 0;
  color: currentColor;
  opacity: 0.82;
}

.exam-form {
  margin-top: 1.4rem;
}

.exam-quiz-modal-dialog {
  width: min(780px, 100%);
  height: min(84vh, 720px);
  max-height: 84vh;
  overflow: hidden;
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr);
  padding: 0.82rem 0.86rem 0.72rem;
}

.exam-quiz-modal-dialog .exam-modal-header {
  gap: 0.75rem;
}

.exam-quiz-modal-dialog .exam-modal-header h2 {
  font-size: clamp(1.35rem, 2.4vw, 2rem);
  letter-spacing: -0.035em;
}

.exam-quiz-modal-dialog .exam-modal-header p:not(.eyebrow) {
  margin: 0.22rem 0 0;
  font-size: 0.92rem;
  line-height: 1.35;
}

.exam-quiz-modal-dialog .exam-modal-meta {
  gap: 0.4rem;
  margin-top: 0.42rem;
}

.exam-quiz-modal-dialog .exam-modal-pill {
  min-height: 1.78rem;
  padding: 0.22rem 0.62rem;
  font-size: 0.78rem;
}

.exam-quiz-modal-dialog .exam-modal-close {
  width: 2.72rem;
  height: 2.72rem;
}

.exam-quiz-progress {
  height: 0.46rem;
  margin-top: 0.42rem;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.22);
  overflow: hidden;
}

.exam-quiz-progress-fill {
  width: 10%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #2563eb, #14b8a6);
  transition: width 0.18s ease;
}

.exam-finish-card {
  display: grid;
  gap: 0.75rem;
  place-items: center;
  width: min(560px, 100%);
  justify-self: center;
  padding: 1.35rem;
  border: 1px solid rgba(37, 99, 235, 0.16);
  border-radius: 24px;
  text-align: center;
  background:
    radial-gradient(circle at 18% 14%, rgba(244, 196, 48, 0.22), transparent 10rem),
    linear-gradient(145deg, rgba(255, 255, 255, 0.96), rgba(237, 246, 255, 0.92));
  box-shadow: 0 18px 48px rgba(20, 51, 79, 0.14);
}

.exam-finish-card .eyebrow {
  margin: 0;
  color: var(--color-primary-dark);
}

.exam-finish-card strong {
  color: #14334f;
  font-size: clamp(1.55rem, 4vw, 2.45rem);
  line-height: 1.05;
}

.exam-finish-card p {
  max-width: 44ch;
  margin: 0;
  color: var(--color-muted);
  line-height: 1.58;
}

.exam-finish-card span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.2rem;
  padding: 0.35rem 0.82rem;
  border-radius: 999px;
  color: #14334f;
  background: var(--color-accent);
  font-weight: 900;
}

.exam-quiz-modal-dialog .exam-form {
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  gap: 0.48rem;
  min-height: 0;
  margin-top: 0.52rem;
}

.exam-quiz-modal-dialog .exam-grid {
  grid-template-columns: minmax(0, 1fr);
  gap: 0.48rem;
  min-height: 0;
  align-content: center;
}

.exam-quiz-modal-dialog .exam-card {
  max-width: 31rem;
  width: 100%;
  justify-self: center;
  gap: 0.42rem;
  padding: 0.68rem;
  border-radius: 18px;
}

.exam-quiz-modal-dialog .exam-card-head strong {
  font-size: 1.06rem;
}

.exam-quiz-modal-dialog .exam-field {
  gap: 0.16rem;
}

.exam-quiz-modal-dialog .exam-field span {
  font-size: 0.74rem;
}

.exam-quiz-modal-dialog .exam-given-field {
  padding: 0.45rem 0.62rem;
  border-radius: 14px;
}

.exam-quiz-modal-dialog .exam-given-field strong {
  font-size: 0.96rem;
}

.exam-quiz-modal-dialog .exam-field input {
  min-height: 2.22rem;
  padding: 0.4rem 0.65rem;
}

.exam-quiz-modal-dialog .exam-card-feedback {
  min-height: 0.95rem;
  font-size: 0.8rem;
  line-height: 1.24;
}

.exam-quiz-modal-dialog .exam-actions {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.45rem;
  margin-top: 0;
}

.exam-quiz-modal-dialog .exam-actions .button {
  width: 100%;
  min-height: 2.26rem;
  padding-block: 0.38rem;
  font-size: 0.86rem;
}

@media (max-width: 920px) {
  .exam-quiz-modal-dialog .exam-actions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.exam-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}

.exam-card {
  display: grid;
  gap: 0.8rem;
  padding: 1rem;
  border: 1px solid var(--color-line);
  border-radius: 22px;
  background: #fff;
}

.exam-card-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
}

.exam-card-head span {
  color: var(--color-primary-dark);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.14em;
}

.exam-card-head strong {
  font-size: 1.35rem;
}

.exam-field {
  display: grid;
  gap: 0.35rem;
}

.exam-field span {
  color: var(--color-muted);
  font-size: 0.83rem;
  font-weight: 900;
}

.exam-given-field {
  padding: 0.68rem 0.78rem;
  border: 1px solid rgba(37, 99, 235, 0.16);
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.09), rgba(20, 184, 166, 0.08));
}

.exam-given-badge {
  justify-self: start;
  padding: 0.16rem 0.48rem;
  border-radius: 999px;
  color: #1d4ed8;
  background: rgba(37, 99, 235, 0.1);
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.exam-given-field strong {
  color: #14334f;
  font-size: 1.08rem;
  line-height: 1.18;
}

.exam-field input {
  width: 100%;
  min-height: 2.7rem;
  border: 1px solid var(--color-line);
  border-radius: 14px;
  padding: 0.65rem 0.75rem;
  color: var(--color-ink);
  background: #fffaf1;
}

.exam-field input:focus {
  outline: 3px solid rgba(37, 99, 235, 0.16);
  border-color: var(--color-primary);
}

.exam-field input::placeholder {
  color: #9f1239;
  opacity: 0.78;
}

.exam-field input.is-correct {
  border-color: #15803d;
  background: #ecfdf3;
}

.exam-field input.is-wrong {
  border-color: #dc2626;
  background: #fff1f2;
  color: #991b1b;
  cursor: pointer;
}

.exam-field input.is-answer {
  border-color: #2563eb;
  background: #eff6ff;
  color: #1d4ed8;
  cursor: pointer;
}

.exam-card-feedback {
  min-height: 1.4rem;
  margin: 0;
  color: var(--color-muted);
  font-size: 0.92rem;
  line-height: 1.45;
}

.exam-card-feedback.is-correct {
  color: #15803d;
  font-weight: 800;
}

.exam-card-feedback.is-wrong {
  color: #b91c1c;
  font-weight: 800;
}

.exam-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.2rem;
}

.exam-stats-strip {
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  align-items: stretch;
}

.exam-stats-strip-primary {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.exam-stats-strip-periods {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 0.9rem;
}

.exam-stats-strip span {
  display: inline-grid;
  place-items: center;
  width: auto;
  min-width: 5.2rem;
  min-height: 3.6rem;
  padding: 0.25rem 0.95rem;
  border-radius: 18px;
  font-size: clamp(1.35rem, 3vw, 2rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  box-shadow: 0 14px 28px rgba(37, 99, 235, 0.18);
}

.exam-stats-strip article {
  display: grid;
  align-content: center;
  justify-items: center;
  min-height: 13.8rem;
  padding: 1.55rem 1.15rem;
  text-align: center;
}

.exam-stats-strip article.is-period {
  min-height: 12.6rem;
}

.exam-stats-strip-periods strong {
  margin-top: 0.85rem;
}

.exam-stats-strip-periods p {
  max-width: 18ch;
  font-size: 0.96rem;
}

.exam-stats-strip strong {
  margin-top: 1rem;
  font-size: 1.38rem;
}

.exam-stats-strip p {
  margin-top: 0.5rem;
  max-width: 22ch;
  font-size: 1rem;
  line-height: 1.6;
}

#common-grade-badge {
  position: fixed;
  top: 5.4rem;
  right: 1rem;
  z-index: 120;
  display: grid;
  gap: 0.65rem;
  justify-items: end;
  max-width: min(320px, calc(100vw - 2rem));
  pointer-events: none;
  --grade-base: #ef4444;
  --grade-soft: rgba(239, 68, 68, 0.18);
  --grade-ring: rgba(239, 68, 68, 0.42);
  --grade-text: #fff7f7;
}

#common-grade-badge[hidden] {
  display: none !important;
}

.common-grade-circle {
  display: grid;
  place-items: center;
  align-content: center;
  width: 104px;
  height: 104px;
  border: 4px solid var(--grade-ring);
  border-radius: 999px;
  color: var(--grade-text);
  background:
    radial-gradient(circle at 28% 22%, rgba(255, 255, 255, 0.38), transparent 30%),
    linear-gradient(160deg, var(--grade-base), var(--grade-soft));
  box-shadow: 0 18px 44px rgba(20, 51, 79, 0.24);
}

.common-grade-label {
  font-size: 0.74rem;
  font-weight: 900;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.common-grade-value {
  font-size: 2.05rem;
  line-height: 1;
}

.common-grade-message {
  max-width: 290px;
  margin: 0;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--grade-ring);
  border-radius: 18px;
  color: #f8fafc;
  background: rgba(15, 23, 42, 0.9);
  box-shadow: 0 16px 36px rgba(20, 51, 79, 0.2);
  line-height: 1.45;
  text-align: right;
}

.migration-strip {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
  margin-top: 1.5rem;
  padding: 1rem 1.2rem;
  border: 1px solid rgba(37, 99, 235, 0.2);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 16px 40px rgba(20, 51, 79, 0.09);
}

.migration-strip p,
.migration-strip strong,
.migration-strip span {
  margin: 0;
}

.migration-strip p {
  color: var(--color-primary-dark);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.11em;
  font-size: 0.75rem;
}

.migration-strip span {
  color: var(--color-muted);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  width: min(var(--content-max), calc(100% - 2rem));
  margin: 0 auto 2rem;
  padding: 1.2rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.76);
}

.site-footer p {
  margin: 0.3rem 0 0;
  color: var(--color-muted);
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
}

.footer-link {
  border: 0;
  color: var(--color-primary-dark);
  background: transparent;
  cursor: pointer;
  font-weight: 800;
}

.info-dialog {
  width: min(460px, calc(100% - 2rem));
  border: 1px solid var(--color-line);
  border-radius: 22px;
  padding: 1.4rem;
  color: var(--color-ink);
  box-shadow: var(--shadow-soft);
}

.dialog-close {
  float: right;
  border: 0;
  background: transparent;
  cursor: pointer;
  font-weight: 900;
}

.stats-hero {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: 1.5rem;
  align-items: stretch;
  padding: 2rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow-soft);
}

.stats-quick-grid .mode-card {
  min-height: 18rem;
}

.stats-quick-button {
  margin-top: auto;
}

.stats-evolution-section .feature-grid {
  margin-top: 1rem;
}

.stats-trend-card {
  min-height: 14.5rem;
}

.stats-bars-panel {
  margin-top: 1.3rem;
  padding: 1.3rem;
  border: 1px solid var(--color-line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.82);
}

.stats-bars-head strong {
  display: block;
  font-size: 1.5rem;
}

.stats-bars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(52px, 1fr));
  gap: 0.8rem;
  align-items: end;
  min-height: 180px;
  margin-top: 1rem;
}

.stats-bar-item {
  display: grid;
  justify-items: center;
  gap: 0.45rem;
}

.stats-bar {
  width: 100%;
  min-height: 24px;
  border-radius: 18px 18px 10px 10px;
  background: linear-gradient(180deg, rgba(239, 68, 68, 0.95), rgba(248, 113, 113, 0.82));
  box-shadow: 0 14px 26px rgba(239, 68, 68, 0.18);
}

.stats-bar.is-good {
  background: linear-gradient(180deg, rgba(34, 197, 94, 0.95), rgba(74, 222, 128, 0.82));
  box-shadow: 0 14px 26px rgba(34, 197, 94, 0.18);
}

.stats-bar-item strong {
  font-size: 1rem;
}

.stats-bar-item span {
  color: var(--color-muted);
  font-size: 0.84rem;
}

.stats-pages-list {
  display: grid;
  gap: 1rem;
  margin-top: 1.4rem;
}

.stats-page-card {
  padding: 1.2rem;
  border: 1px solid var(--color-line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 16px 34px rgba(20, 51, 79, 0.08);
}

.stats-page-card-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.8rem;
  align-items: flex-start;
}

.stats-page-card-heading {
  display: grid;
  gap: 0.45rem;
}

.stats-page-card-head h3 {
  margin: 0;
  font-size: 1.45rem;
}

.stats-page-card-copy {
  max-width: 50rem;
  margin: 0;
  color: var(--color-muted);
  line-height: 1.55;
}

.stats-panel .section-copy {
  text-align: justify;
  text-wrap: pretty;
}

.stats-panel .section-heading {
  max-width: none;
  width: 100%;
}

.stats-heading-inline {
  display: flex;
  align-items: flex-start;
}

.stats-info-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.2rem;
  height: 2.2rem;
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: 999px;
  color: var(--color-primary-dark);
  background: rgba(37, 99, 235, 0.08);
  font-weight: 900;
  cursor: pointer;
  transition: background-color 140ms ease, color 140ms ease, border-color 140ms ease;
}

.stats-info-button:hover,
.stats-info-button:focus-visible {
  color: #fff;
  border-color: #2563eb;
  background: #2563eb;
}

.stats-info-button-panel {
  position: absolute;
  top: -0.2rem;
  right: -0.15rem;
}

.stats-info-list {
  display: grid;
  gap: 0.7rem;
  margin: 0.85rem 0 0;
  padding-left: 1.25rem;
  color: var(--color-muted);
  line-height: 1.65;
}

.stats-page-card-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.55rem;
}

.stats-page-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.1);
  color: var(--color-primary-dark);
  font-weight: 800;
}

.stats-page-status {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2rem;
  padding: 0.35rem 0.78rem;
  border-radius: 999px;
  font-weight: 900;
  border: 1px solid transparent;
}

.stats-page-status.is-strong {
  color: #124d99;
  border-color: rgba(37, 99, 235, 0.18);
  background: rgba(37, 99, 235, 0.11);
}

.stats-page-status.is-steady {
  color: #0f766e;
  border-color: rgba(20, 184, 166, 0.2);
  background: rgba(20, 184, 166, 0.11);
}

.stats-page-status.is-watch {
  color: #8a5b12;
  border-color: rgba(217, 119, 6, 0.2);
  background: rgba(245, 158, 11, 0.12);
}

.stats-page-status.is-progress {
  color: #475569;
  border-color: rgba(100, 116, 139, 0.16);
  background: rgba(100, 116, 139, 0.1);
}

.stats-page-card-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0.8rem;
  margin-top: 1rem;
}

.stats-page-card-grid div {
  display: grid;
  gap: 0.35rem;
  padding: 0.9rem;
  border-radius: 18px;
  background: rgba(20, 51, 79, 0.04);
}

.stats-page-card-grid span {
  color: var(--color-muted);
  font-size: 0.88rem;
  font-weight: 700;
}

.stats-page-card-grid strong {
  font-size: 1.3rem;
}

.stats-empty {
  color: var(--color-muted);
  line-height: 1.7;
}

.stats-modal {
  position: fixed;
  inset: 0;
  z-index: 150;
}

.stats-modal[hidden] {
  display: none !important;
}

.stats-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(20, 51, 79, 0.48);
  backdrop-filter: blur(10px);
}

.stats-modal-dialog {
  position: relative;
  z-index: 1;
  width: min(680px, calc(100% - 2rem));
  margin: 8vh auto 0;
  padding: 1.4rem;
  border: 1px solid var(--color-line);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow-soft);
}

.stats-modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.stats-modal-header h2 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  letter-spacing: -0.04em;
}

.stats-modal-body {
  margin-top: 1rem;
}

.stats-detail-intro {
  display: grid;
  gap: 0.5rem;
}

.stats-detail-copy {
  margin: 0;
  color: var(--color-muted);
  font-size: 1.08rem;
  line-height: 1.75;
}

.stats-detail-summary {
  margin: 0;
  padding: 0.85rem 1rem;
  border-radius: 18px;
  color: var(--color-primary-dark);
  background: rgba(37, 99, 235, 0.08);
  font-weight: 700;
  line-height: 1.6;
}

.page-lead {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 1.4rem;
  align-items: stretch;
}

.stats-intro-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.22fr) minmax(260px, 0.78fr);
  gap: 1.4rem;
  align-items: stretch;
}

.stats-challenge-panel {
  align-content: start;
  align-items: start;
  gap: 0.9rem;
  min-height: 100%;
  padding: 1.55rem;
}

.stats-intro-section {
  margin-bottom: 1.2rem;
}

.stats-intro-layout .section-heading {
  align-self: start;
}

.stats-challenge-panel strong {
  max-width: 11ch;
}

.stats-challenge-panel p {
  margin: 0;
  max-width: 28ch;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.65;
}

.stats-challenge-list {
  display: grid;
  gap: 0.5rem;
  margin: 0.15rem 0 0;
  padding: 0;
  list-style: none;
  width: 100%;
}

.stats-challenge-list li {
  padding: 0.6rem 0.8rem;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.12);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.14);
  color: rgba(255, 255, 255, 0.92);
  font-weight: 700;
  line-height: 1.45;
}

.page-lead-main,
.lead-side-card,
.stats-panel {
  padding: 1.4rem;
  border: 1px solid var(--color-line);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.84);
  box-shadow: 0 18px 38px rgba(20, 51, 79, 0.08);
}

.section-copy {
  color: var(--color-muted);
  line-height: 1.75;
}

.stats-filter {
  display: inline-grid;
  gap: 0.4rem;
  margin-top: 1.1rem;
}

.stats-filter select {
  min-width: 10rem;
  min-height: 2.7rem;
  padding: 0.45rem 0.8rem;
  border: 1px solid var(--color-line);
  border-radius: 16px;
  background: #fff;
}

.feature-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.2rem;
}

.feature-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.4rem;
  padding: 0.45rem 0.9rem;
  border: 1px solid rgba(37, 99, 235, 0.16);
  border-radius: 999px;
  color: var(--color-primary-dark);
  background: rgba(37, 99, 235, 0.08);
  font-weight: 800;
}

.feature-pill-button {
  cursor: pointer;
}

.page-anchor-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.2rem;
}

.page-anchor-link {
  color: var(--color-primary-dark);
  font-weight: 800;
  text-decoration: none;
}

.stats-page-grid {
  display: grid;
  gap: 1.2rem;
  margin-top: 1.4rem;
}

.stats-grid {
  display: grid;
  gap: 0.9rem;
  margin-top: 1rem;
}

.stats-grid-5 {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.stats-grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.stats-grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.stat-box {
  display: grid;
  align-content: center;
  justify-items: center;
  min-height: 11rem;
  padding: 1rem;
  border-radius: 22px;
  background: rgba(20, 51, 79, 0.04);
  text-align: center;
}

.stat-box h3 {
  margin: 0;
  font-size: 1.08rem;
}

.stat-box p {
  margin: 0.65rem 0 0;
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  font-weight: 900;
  letter-spacing: -0.04em;
}

.stat-box small {
  margin-top: 0.55rem;
  color: var(--color-muted);
  font-size: 0.92rem;
  line-height: 1.5;
}

.stats-chart-wrap {
  min-height: 330px;
  margin-top: 1rem;
  padding: 1rem 1rem 0.85rem;
  border-radius: 22px;
  background:
    radial-gradient(circle at top right, rgba(244, 196, 48, 0.12), transparent 10rem),
    rgba(20, 51, 79, 0.03);
}

.stats-chart-wrap-modal {
  min-height: 360px;
}

.stats-line-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 0;
  justify-content: flex-end;
}

.stats-line-chart-wrap {
  display: flex;
  align-items: stretch;
  height: 305px;
  min-height: 305px;
}

.stats-chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 0;
}

.stats-line-bottom {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 1rem;
  margin-top: 0.75rem;
}

.stats-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--color-muted);
  font-size: 0.9rem;
  font-weight: 700;
}

.stats-chart-wrap canvas {
  display: block;
  max-width: 100%;
}

.stats-line-chart-wrap canvas {
  flex: 1 1 auto;
  width: 100% !important;
  height: 100% !important;
}

.stats-legend-dot {
  width: 0.8rem;
  height: 0.8rem;
  border-radius: 999px;
  background: var(--color-primary);
}

.stats-legend-dot.is-global {
  background: var(--color-primary);
}

#stats-line-panel .section-heading {
  max-width: none;
}

.stats-line-copy {
  max-width: none;
  margin-bottom: 0;
}

#stats-line-panel .stats-filter {
  margin-top: 0;
}

#stats-line-panel .stats-filter span {
  font-size: 0.82rem;
  font-weight: 800;
}

#stats-line-panel .stats-filter select {
  min-width: 9rem;
  min-height: 2.45rem;
  padding: 0.4rem 0.7rem;
  font-size: 1rem;
}

@media (min-width: 1100px) {
  #stats-line-panel {
    padding-top: 0.98rem;
    padding-bottom: 0.98rem;
  }

  .stats-line-chart-wrap {
    min-height: 202px;
  }
}

@media (max-width: 820px) {
  .stats-line-bottom {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .stats-line-controls {
    justify-content: flex-start;
  }
}

.stats-detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.85rem;
  margin-top: 1rem;
}

.stats-detail-card {
  display: grid;
  gap: 0.45rem;
  padding: 1rem;
  border-radius: 18px;
  background: rgba(20, 51, 79, 0.05);
  border: 1px solid rgba(20, 51, 79, 0.06);
}

.stats-detail-card span {
  color: var(--color-muted);
  font-size: 0.92rem;
  font-weight: 700;
}

.stats-detail-card strong {
  font-size: 1.3rem;
}

.stats-detail-card small {
  color: var(--color-muted);
  line-height: 1.5;
}

.stats-detail-card.is-strong {
  background: rgba(37, 99, 235, 0.08);
  border-color: rgba(37, 99, 235, 0.14);
}

.stats-detail-card.is-steady {
  background: rgba(20, 184, 166, 0.08);
  border-color: rgba(15, 118, 110, 0.14);
}

.stats-detail-card.is-watch {
  background: rgba(245, 158, 11, 0.09);
  border-color: rgba(146, 64, 14, 0.12);
}

.stats-detail-card.is-progress {
  background: rgba(100, 116, 139, 0.08);
  border-color: rgba(100, 116, 139, 0.12);
}

.stats-chart-wrap-modal {
  margin-top: 1rem;
}

body.stats-modal-open {
  overflow: hidden;
}

@media (max-width: 820px) {
  .page-shell {
    width: min(100% - 1rem, var(--content-max));
    padding-top: 1rem;
  }

  .hero {
    grid-template-columns: 1fr;
    padding: 1rem;
  }

  .exam-hero,
  .hero h1 {
    max-width: none;
  }

  .exam-hero {
    grid-template-columns: 1fr;
    padding: 1rem;
  }

  .study-hero,
  .exam-launch-card {
    grid-template-columns: 1fr;
    padding: 1rem;
  }

  .page-lead,
  .stats-intro-layout,
  .stats-hero,
  .stats-page-card-grid,
  .exam-stats-strip-primary,
  .exam-stats-strip-periods {
    grid-template-columns: 1fr;
  }

  .stats-grid-5,
  .stats-grid-4,
  .stats-grid-3 {
    grid-template-columns: 1fr;
  }

  .study-hero h1 {
    max-width: none;
  }

  .pdf-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pdf-list-featured {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pdf-more-panel {
    top: calc(100% - 0.45rem);
  }

  .exam-launch-card .grade-card {
    justify-self: center;
  }

  .exam-modal {
    padding: 0.55rem;
  }

  .exam-modal-dialog {
    max-height: 92vh;
    padding: 1rem;
    border-radius: 22px;
  }

  .exam-modal-header {
    align-items: stretch;
  }

  .guided-practice-head {
    grid-template-columns: 1fr;
  }

  .guided-practice-pattern-text {
    max-width: none;
    text-align: left;
  }

  .flashcards-modal-top {
    grid-template-columns: 1fr auto;
  }

  .flashcards-modal-top h2 {
    grid-column: 1 / 2;
  }

  .flashcards-modal-top p {
    grid-column: 1 / 2;
    width: max-content;
  }

  .flashcards-modal-top .exam-modal-close {
    grid-column: 2 / 3;
    grid-row: 1 / span 2;
    align-self: start;
  }

  .flashcards-modal-dialog {
    max-height: 90vh;
    padding: 0.72rem;
  }

  .flashcards-modal-dialog .flashcard-stage {
    min-height: min(50vh, 21rem);
  }

  .flashcards-modal-dialog .flashcard-stack-shell {
    min-height: min(48vh, 20rem);
  }

  .flashcards-modal-dialog .stack-preview-card,
  .flashcards-modal-dialog .flashcard-card {
    width: min(420px, 100%);
    min-height: min(40vh, 17.2rem);
  }

  .flashcards-modal-dialog .exam-actions {
    grid-template-columns: 1fr;
  }

  .timer-popup-head {
    grid-template-columns: 1fr;
  }

  .timer-clock-card {
    justify-self: center;
    min-width: 8rem;
    min-height: 8rem;
  }

  .grade-card {
    max-width: 18rem;
    justify-self: center;
  }

  .hero-panel {
    min-height: auto;
  }

  .intro-route,
  .routine-strip,
  .two-col-grid,
  .feature-grid,
  .site-footer {
    grid-template-columns: 1fr;
  }

  .feature-grid {
    display: grid;
  }

  .site-footer {
    flex-direction: column;
  }

  .migration-strip {
    grid-template-columns: 1fr;
    border-radius: 24px;
  }

  #common-grade-badge {
    top: auto;
    right: 0.75rem;
    bottom: 0.75rem;
  }

  .common-grade-circle {
    width: 84px;
    height: 84px;
  }

.common-grade-value {
  font-size: 1.6rem;
}
}

/* Internal sentence review tool */
.review-shell {
  gap: 1.35rem;
}

.review-hero {
  background:
    radial-gradient(circle at 92% 12%, rgba(20, 184, 166, 0.22), transparent 28%),
    linear-gradient(135deg, #f8fafc 0%, #e0f2fe 52%, #eff6ff 100%);
}

.review-info-panel {
  align-self: stretch;
}

.review-toolbar {
  padding: 1rem;
}

.review-toolbar-row {
  display: grid;
  grid-template-columns: minmax(10rem, 0.75fr) minmax(16rem, 1.6fr) minmax(9rem, 0.65fr);
  gap: 0.8rem;
  align-items: end;
}

.review-field {
  display: grid;
  gap: 0.4rem;
}

.review-field span {
  color: var(--color-heading);
  font-size: 0.85rem;
  font-weight: 800;
}

.review-field select,
.review-field input,
.review-notes {
  width: 100%;
  border: 1px solid rgba(148, 163, 184, 0.45);
  border-radius: 16px;
  padding: 0.78rem 0.9rem;
  background: #f8fafc;
  color: var(--color-heading);
  font: inherit;
}

.review-field input:focus,
.review-field select:focus,
.review-notes:focus {
  outline: 3px solid rgba(37, 99, 235, 0.14);
  border-color: var(--color-primary);
  background: #fff;
}

.review-check-field {
  align-content: end;
}

.review-check-field input {
  width: 1.35rem;
  height: 1.35rem;
  cursor: pointer;
}

.review-summary {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.review-list-section {
  display: grid;
  gap: 1rem;
}

.review-list {
  display: grid;
  gap: 1rem;
}

.review-item {
  display: grid;
  gap: 1rem;
  padding: 1rem;
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 18px 42px rgba(15, 23, 42, 0.08);
}

.review-item-top {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: flex-start;
}

.review-item-title {
  display: grid;
  gap: 0.45rem;
}

.review-item-id {
  color: var(--color-muted);
  font-size: 0.88rem;
  font-weight: 800;
}

.review-item-meta,
.review-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.review-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  min-height: 2rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: #e2e8f0;
  color: #0f172a;
  font-size: 0.82rem;
  font-weight: 800;
}

.review-chip.issue {
  background: #ffedd5;
  color: #9a3412;
}

.review-chip.warning {
  background: #fef3c7;
  color: #92400e;
}

.review-chip.ok {
  background: #dcfce7;
  color: #166534;
}

.review-chip.pending {
  background: #dbeafe;
  color: #1d4ed8;
}

.review-chip.review {
  background: #e0e7ff;
  color: #3730a3;
}

.review-sentence {
  padding: 0.9rem 1rem;
  border-radius: 18px;
  background: #f8fafc;
  color: var(--color-heading);
  line-height: 1.75;
}

.review-gap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 5.2rem;
  padding: 0.12rem 0.55rem;
  border-radius: 10px;
  background: rgba(37, 99, 235, 0.13);
  color: var(--color-primary);
  font-weight: 900;
}

.review-answers {
  color: var(--color-body);
}

.review-answers strong {
  color: var(--color-heading);
}

.review-status-btn {
  border: 0;
  border-radius: 999px;
  padding: 0.65rem 0.9rem;
  background: #e2e8f0;
  color: #0f172a;
  cursor: pointer;
  font: inherit;
  font-weight: 800;
}

.review-status-btn:hover,
.review-status-btn:focus-visible {
  background: var(--color-primary);
  color: #fff;
}

.review-status-btn.is-active {
  box-shadow: 0 0 0 2px rgba(15, 23, 42, 0.16) inset;
}

.review-status-btn.pending.is-active {
  background: #dbeafe;
  color: #1d4ed8;
}

.review-status-btn.ok.is-active {
  background: #dcfce7;
  color: #166534;
}

.review-status-btn.review.is-active {
  background: #e0e7ff;
  color: #3730a3;
}

.review-notes {
  min-height: 5.8rem;
  resize: vertical;
}

.review-empty {
  padding: 1.6rem;
  border-radius: 22px;
  background: #fff;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.08);
  color: var(--color-muted);
  text-align: center;
}

@media (max-width: 920px) {
  .review-toolbar-row,
  .review-summary {
    grid-template-columns: 1fr;
  }
}



.grammar-mode-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.grammar-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-bottom: 1rem;
}

.grammar-filter-button,
.grammar-option {
  border: 1px solid rgba(20, 51, 79, 0.14);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--color-ink);
  cursor: pointer;
  font-weight: 700;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.grammar-filter-button {
  padding: 0.72rem 1rem;
}

.grammar-filter-button.is-active,
.grammar-filter-button:hover,
.grammar-option:hover {
  border-color: rgba(37, 99, 235, 0.34);
  box-shadow: 0 12px 28px rgba(20, 51, 79, 0.1);
}

.grammar-question-card {
  display: grid;
  gap: 1rem;
}

.grammar-question-sentence {
  margin: 0;
  font-size: clamp(1.08rem, 1.7vw, 1.35rem);
  line-height: 1.6;
  color: var(--color-ink);
}

.grammar-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
}

.grammar-options-binary {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grammar-option {
  min-height: 3.2rem;
  padding: 0.9rem 1rem;
  text-align: left;
}

.grammar-option.is-selected {
  border-color: rgba(37, 99, 235, 0.52);
  background: rgba(219, 234, 254, 0.98);
  color: #1647b8;
}

.grammar-option.is-correct {
  border-color: rgba(31, 130, 88, 0.42);
  background: rgba(233, 248, 239, 0.96);
  color: #0f5f3b;
}

.grammar-option.is-wrong {
  border-color: rgba(178, 34, 34, 0.42);
  background: rgba(255, 239, 239, 0.96);
  color: #8e1f1f;
}

.grammar-explanation {
  margin: 0;
  padding: 0.95rem 1rem;
  border: 1px solid rgba(20, 51, 79, 0.12);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--color-muted);
  line-height: 1.65;
}

.grammar-review-list {
  display: grid;
  gap: 1rem;
}

.grammar-review-item {
  padding: 1.1rem;
  border: 1px solid rgba(20, 51, 79, 0.12);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 16px 42px rgba(20, 51, 79, 0.08);
}

.grammar-review-item.is-correct {
  border-color: rgba(31, 130, 88, 0.24);
}

.grammar-review-item.is-wrong {
  border-color: rgba(178, 34, 34, 0.24);
}

.grammar-review-item-head {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 0.7rem;
}

.grammar-review-item-head span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.1);
  color: var(--color-primary-dark);
  font-weight: 800;
}

.grammar-review-item p {
  margin: 0.45rem 0 0;
  color: var(--color-muted);
  line-height: 1.6;
}

.grammar-sentence-good {
  color: #0f5f3b;
}

.grammar-sentence-bad {
  color: #8e1f1f;
}

@media (max-width: 760px) {
  .grammar-options-binary {
    grid-template-columns: 1fr;
  }
}

.grammar-topics-heading {
  margin-top: 1.2rem;
  margin-bottom: 0.9rem;
}

.section-heading-compact h3 {
  margin: 0;
  font-size: clamp(1.2rem, 2vw, 1.55rem);
  line-height: 1.2;
}

.section-heading-compact p:not(.eyebrow) {
  margin-top: 0.55rem;
}

.grammar-topic-bar {
  margin-top: 0;
  margin-bottom: 1rem;
}


.grammar-topic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 0.9rem;
  margin: 0 0 1rem;
}

.grammar-topic-card {
  padding: 1rem;
  border: 1px solid rgba(20, 51, 79, 0.12);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 14px 36px rgba(20, 51, 79, 0.08);
}

.grammar-topic-card strong {
  display: block;
  margin: 0 0 0.45rem;
  color: var(--color-primary-dark);
  font-size: 0.98rem;
}

.grammar-topic-card p {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.55;
}


.grammar-cases-section {
  margin-bottom: 1rem;
}

.grammar-cases-heading {
  margin-top: 0.4rem;
  margin-bottom: 0.9rem;
}

.grammar-cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.9rem;
}

.grammar-case-card {
  padding: 1rem;
  border-radius: 22px;
  border: 1px solid rgba(20, 51, 79, 0.12);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 14px 36px rgba(20, 51, 79, 0.08);
}

.grammar-case-card strong {
  display: block;
  margin: 0 0 0.5rem;
  color: var(--color-primary-dark);
}

.grammar-case-card p {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.58;
}

.grammar-case-card-at {
  background: linear-gradient(180deg, rgba(255, 249, 234, 0.98), rgba(255, 255, 255, 0.94));
}

.grammar-case-card-on {
  background: linear-gradient(180deg, rgba(235, 245, 255, 0.98), rgba(255, 255, 255, 0.94));
}

.grammar-case-card-in {
  background: linear-gradient(180deg, rgba(238, 250, 244, 0.98), rgba(255, 255, 255, 0.94));
}

.verb-lab-panel .verb-stack strong:nth-child(2) {
  font-size: clamp(1.55rem, 3vw, 2.4rem);
}

.verb-hub-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: end;
  margin-top: 1.4rem;
}

.verb-hub-search {
  flex: 1 1 320px;
  display: grid;
  gap: 0.45rem;
  font-weight: 800;
}

.verb-hub-search input {
  min-height: 3rem;
  padding: 0.8rem 0.95rem;
  border: 1px solid var(--color-line);
  border-radius: 16px;
  background: #fff;
  font: inherit;
  color: var(--color-text);
}

.verb-hub-search input:focus-visible {
  outline: 2px solid rgba(37, 99, 235, 0.24);
  outline-offset: 2px;
  border-color: var(--color-primary);
}

.verb-hub-count {
  margin: 0;
  padding: 0.8rem 1rem;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  background: rgba(20, 51, 79, 0.04);
  font-weight: 900;
  color: var(--color-primary);
}

.verb-hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 1rem;
  margin-top: 1.3rem;
}

.verb-card {
  position: relative;
  display: grid;
  gap: 0.7rem;
  min-height: 12rem;
  padding: 1.1rem;
  border: 1px solid var(--color-line);
  border-radius: 22px;
  background: linear-gradient(180deg, #ffffff, #f8fafc);
  text-align: left;
  color: var(--color-text);
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.08);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.verb-card:hover,
.verb-card:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(37, 99, 235, 0.34);
  box-shadow: 0 18px 36px rgba(37, 99, 235, 0.14);
  outline: none;
}

.verb-card.is-featured {
  background:
    radial-gradient(circle at top right, rgba(244, 196, 48, 0.4), transparent 9rem),
    linear-gradient(160deg, rgba(20, 51, 79, 0.96), rgba(37, 99, 235, 0.9));
  border-color: rgba(20, 51, 79, 0.12);
  color: #fff;
}

.verb-card.is-featured .verb-card-translation,
.verb-card.is-featured .verb-card-note,
.verb-card.is-featured .verb-card-forms span {
  color: rgba(255, 255, 255, 0.84);
}

.verb-card strong {
  font-size: 1.35rem;
  letter-spacing: -0.03em;
}

.verb-card-badge {
  width: max-content;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: var(--color-accent);
  color: #14334f;
  font-size: 0.78rem;
  font-weight: 900;
}

.verb-card-translation {
  color: var(--color-muted);
  font-weight: 700;
}

.verb-card-forms {
  display: grid;
  gap: 0.38rem;
}

.verb-card-forms span {
  color: var(--color-primary);
  font-weight: 800;
}

.verb-card-note {
  margin: 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.92rem;
}

.verb-hub-empty {
  margin: 1rem 0 0;
  padding: 1rem 1.1rem;
  border: 1px dashed rgba(148, 163, 184, 0.75);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--color-muted);
}

.verb-lab-modal-dialog {
  width: min(1180px, 100%);
  max-height: min(88vh, 920px);
  background: linear-gradient(180deg, #fffdf7 0%, #fffaf1 100%);
}

.verb-lab-modal-body {
  display: grid;
  gap: 1rem;
}

.verb-hub-overview {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 1rem;
}

.verb-hub-panel-card {
  padding: 1rem 1.05rem;
  border: 1px solid var(--color-line);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 14px 28px rgba(15, 23, 42, 0.06);
}

.verb-hub-panel-card h3 {
  margin: 0 0 0.85rem;
  font-size: 1.12rem;
  letter-spacing: -0.03em;
}

.verb-hub-card-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.72rem;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.1);
  color: var(--color-primary);
  font-size: 0.78rem;
  font-weight: 900;
}

.verb-hub-forms-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 0.95rem 0 1rem;
}

.verb-hub-forms-grid div {
  padding: 0.85rem;
  border: 1px solid rgba(148, 163, 184, 0.28);
  border-radius: 16px;
  background: rgba(248, 250, 252, 0.94);
}

.verb-hub-forms-grid span {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--color-muted);
  font-size: 0.84rem;
  font-weight: 700;
}

.verb-hub-forms-grid strong {
  font-size: 1.08rem;
  letter-spacing: -0.03em;
}

.verb-hub-timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.75rem;
  margin-top: 0.95rem;
}

.verb-hub-timeline-item {
  padding: 0.8rem;
  border-radius: 16px;
  background: rgba(20, 51, 79, 0.05);
}

.verb-hub-timeline-item span {
  display: block;
  margin-bottom: 0.3rem;
  color: var(--color-muted);
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.verb-hub-timeline-item strong {
  display: block;
  margin-bottom: 0.32rem;
  color: var(--color-primary);
}

.verb-hub-timeline-item p {
  margin: 0;
  font-size: 0.9rem;
}

.verb-hub-block-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 0.85rem;
}

.verb-hub-use-card {
  display: grid;
  gap: 0.55rem;
  min-height: 11rem;
  padding: 0.95rem;
  border: 1px solid rgba(148, 163, 184, 0.26);
  border-radius: 18px;
  background: linear-gradient(180deg, #fff, #f8fafc);
}

.verb-hub-use-card strong {
  color: var(--color-primary);
  font-size: 1rem;
}

.verb-hub-use-card p,
.verb-hub-use-card span {
  margin: 0;
}

.verb-hub-use-card span {
  color: var(--color-muted);
  font-weight: 700;
}

.verb-hub-quiz-list {
  display: grid;
  gap: 0.9rem;
}

.verb-hub-quiz-item {
  padding: 0.95rem;
  border: 1px solid rgba(148, 163, 184, 0.24);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.76);
}

.verb-hub-quiz-prompt {
  margin: 0 0 0.8rem;
  font-weight: 800;
}

.verb-hub-quiz-options {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.verb-hub-quiz-option {
  min-width: 4.8rem;
  padding: 0.7rem 0.9rem;
  border: 1px solid rgba(37, 99, 235, 0.22);
  border-radius: 14px;
  background: #fff;
  color: var(--color-primary);
  font: inherit;
  font-weight: 800;
}

.verb-hub-quiz-option:hover,
.verb-hub-quiz-option:focus-visible {
  border-color: var(--color-primary);
  background: rgba(37, 99, 235, 0.08);
  outline: none;
}

.verb-hub-quiz-option.is-selected {
  background: #2563eb;
  border-color: #2563eb;
  color: #fff;
}

.verb-hub-quiz-option.is-correct {
  background: #16a34a;
  border-color: #16a34a;
  color: #fff;
}

.verb-hub-quiz-option.is-wrong {
  background: #dc2626;
  border-color: #dc2626;
  color: #fff;
}

.verb-hub-quiz-feedback {
  margin: 0.7rem 0 0;
  font-size: 0.92rem;
}

.verb-hub-quiz-feedback.is-correct {
  color: #166534;
}

.verb-hub-quiz-feedback.is-wrong {
  color: #991b1b;
}

.verb-hub-placeholder-card p:last-child {
  margin-bottom: 0;
  color: var(--color-muted);
}

@media (max-width: 920px) {
  .verb-hub-overview {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .verb-hub-forms-grid {
    grid-template-columns: 1fr;
  }

  .verb-hub-count {
    width: 100%;
  }
}

.verb-be-panel strong {
  max-width: none;
}

.be-forms-grid strong,
.be-sound-card strong {
  display: block;
  margin-bottom: 0.65rem;
  color: var(--color-primary);
  font-size: 1.5rem;
  letter-spacing: -0.04em;
}

.be-map-card,
.be-error-card,
.be-module-card,
.be-sound-card {
  display: grid;
  align-content: start;
  gap: 0.9rem;
}

.be-sound-card .button,
.be-module-card .button {
  width: max-content;
}

.be-guided-card {
  display: grid;
  gap: 1rem;
  margin-top: 1.2rem;
  padding: 1.2rem;
  border: 1px solid var(--color-line);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255,255,255,0.96), rgba(248,250,252,0.94));
}

.be-guided-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
}

.be-guided-head span,
.be-guided-head strong {
  font-weight: 900;
  color: var(--color-primary);
}

.be-guided-prompt {
  margin: 0;
  color: var(--color-muted);
}

.be-guided-sentence {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 900;
  letter-spacing: -0.03em;
}

.be-guided-field {
  display: grid;
  gap: 0.45rem;
  font-weight: 800;
}

.be-guided-field input {
  min-height: 3rem;
  padding: 0.8rem 0.95rem;
  border: 1px solid var(--color-line);
  border-radius: 16px;
  background: #fff;
  font: inherit;
}

.be-guided-field input:focus-visible {
  outline: 2px solid rgba(37, 99, 235, 0.22);
  outline-offset: 2px;
  border-color: var(--color-primary);
}

.be-guided-hint {
  margin: -0.25rem 0 0;
  color: var(--color-muted);
  font-size: 0.92rem;
}

.be-guided-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.be-guided-status {
  margin: 0;
  color: var(--color-muted);
  font-weight: 700;
}

.be-error-wrong,
.be-error-right {
  margin: 0;
  font-weight: 900;
}

.be-error-wrong {
  color: #991b1b !important;
}

.be-error-right {
  color: #166534 !important;
}

.be-module-modal-dialog {
  width: min(1120px, calc(100% - 0.6rem));
  max-height: min(90svh, 820px);
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  overflow: hidden;
}

.be-module-body {
  display: grid;
  overflow: hidden;
  align-content: start;
  padding-right: 0;
}

.be-module-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.72rem;
}

.be-module-panel {
  padding: 0.88rem;
  border: 1px solid var(--color-line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.92);
}

.be-module-panel h3 {
  margin: 0 0 0.52rem;
  font-size: 1rem;
  letter-spacing: -0.03em;
}

.be-module-panel p {
  margin: 0;
  line-height: 1.5;
  font-size: 0.95rem;
}

.be-module-list {
  margin: 0;
  padding-left: 1rem;
  color: var(--color-muted);
  font-size: 0.94rem;
  line-height: 1.46;
}

.be-module-list li + li {
  margin-top: 0.32rem;
}

.be-module-quiz-panel {
  grid-column: 1 / -1;
}

.be-quiz-prompt {
  margin-bottom: 0.65rem !important;
  font-weight: 800;
  color: var(--color-text) !important;
  line-height: 1.42;
}

.be-quiz-options {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.be-quiz-option {
  min-width: 5rem;
  padding: 0.62rem 0.82rem;
  border: 1px solid rgba(37, 99, 235, 0.2);
  border-radius: 14px;
  background: #fff;
  color: var(--color-primary);
  font: inherit;
  font-weight: 800;
  font-size: 0.94rem;
}

.be-quiz-option:hover,
.be-quiz-option:focus-visible {
  border-color: var(--color-primary);
  background: rgba(37, 99, 235, 0.08);
  outline: none;
}

.be-quiz-option.is-selected {
  background: #2563eb;
  border-color: #2563eb;
  color: #fff;
}

.be-quiz-option.is-correct {
  background: #16a34a;
  border-color: #16a34a;
  color: #fff;
}

.be-quiz-option.is-wrong {
  background: #dc2626;
  border-color: #dc2626;
  color: #fff;
}

.be-quiz-feedback {
  margin: 0.68rem 0 0;
  font-size: 0.92rem;
  line-height: 1.42;
}

.be-quiz-feedback.is-correct {
  color: #166534;
}

.be-quiz-feedback.is-wrong {
  color: #991b1b;
}

@media (max-width: 680px) {
  .be-module-layout {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 560px) {
  .be-module-modal-dialog {
    width: min(100%, calc(100% - 0.18rem));
    max-height: 94svh;
  }

  .be-module-layout {
    grid-template-columns: 1fr;
    gap: 0.58rem;
  }

  .be-module-panel {
    padding: 0.72rem;
  }

  .be-module-panel h3 {
    font-size: 0.94rem;
  }

  .be-module-panel p,
  .be-module-list,
  .be-quiz-prompt,
  .be-quiz-feedback {
    font-size: 0.88rem;
    line-height: 1.36;
  }

  .be-quiz-option {
    min-width: 4.35rem;
    padding: 0.52rem 0.7rem;
    font-size: 0.88rem;
  }
}

/* verb-be-exam start */
.be-exam-intro {
  display: grid;
  gap: 1rem;
}

.be-exam-launch-card,
.be-exam-card,
.be-exam-question-card,
.be-exam-finish-card {
  border: 1px solid var(--color-line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 16px 42px rgba(20, 51, 79, 0.08);
}

.be-exam-launch-card {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  align-items: end;
  padding: 1.15rem;
}

.be-exam-launch-card h3,
.be-exam-card h3,
.be-exam-finish-card h3 {
  margin: 0 0 0.55rem;
}

.be-exam-launch-card p,
.be-exam-card p,
.be-exam-finish-card p {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.6;
}

.be-exam-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.be-exam-card {
  display: grid;
  gap: 0.85rem;
  align-content: start;
}

.be-exam-card-count {
  color: var(--color-primary) !important;
  font-weight: 900;
}

.be-stats-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.be-stats-card {
  display: grid;
  gap: 0.65rem;
  align-content: start;
}

.be-stats-card strong {
  color: var(--color-primary);
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  letter-spacing: -0.04em;
}

.be-stats-meta {
  margin: 1rem 0 0;
  color: var(--color-muted);
  line-height: 1.6;
}

.be-exam-card .button {
  width: max-content;
}

.be-exam-modal-dialog {
  width: min(920px, calc(100% - 0.6rem));
  max-height: min(90svh, 820px);
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  overflow: hidden;
}

.be-exam-modal-body {
  display: grid;
  gap: 0.62rem;
  min-height: 0;
  overflow: hidden;
  align-content: start;
  padding-right: 0;
}

.be-exam-toolbar-shell {
  margin: 0;
  border: 0;
}

.be-exam-toolbar-summary {
  display: none;
}

.be-exam-toolbar {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
}

.be-exam-filter {
  display: grid;
  gap: 0.4rem;
  font-weight: 800;
}

.be-exam-filter select {
  min-height: 2.9rem;
  padding: 0.72rem 0.85rem;
  border: 1px solid var(--color-line);
  border-radius: 16px;
  background: #fff;
  font: inherit;
}

.be-exam-stage {
  min-height: 0;
  overflow: visible;
  overflow-x: hidden;
  padding-right: 0;
}

.be-exam-question-card,
.be-exam-finish-card {
  display: grid;
  gap: 0.8rem;
  padding: 1rem;
}

.be-exam-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.be-exam-meta span {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.35rem 0.72rem;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.1);
  color: var(--color-primary-dark);
  font-size: 0.82rem;
  font-weight: 850;
}

.be-exam-prompt {
  margin: 0;
  color: var(--color-ink);
  font-size: clamp(1rem, 1.7vw, 1.22rem);
  line-height: 1.55;
  font-weight: 900;
}

.be-exam-prompt-inline {
  display: block;
}

.be-exam-inline-group {
  display: inline-flex;
  flex-wrap: nowrap;
  gap: 0.34rem;
  align-items: baseline;
  margin: 0 0.14rem;
  max-width: 100%;
  vertical-align: baseline;
}

.be-exam-inline-wrap {
  display: inline-flex;
  align-items: center;
  width: auto;
  min-width: 0;
  max-width: 100%;
}

.be-exam-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.be-exam-input {
  min-height: 2.55rem;
  padding: 0.2rem 0.78rem 0.28rem;
  border: 1px solid rgba(20, 51, 79, 0.14);
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(246, 249, 252, 0.96));
  color: var(--color-ink);
  font: inherit;
  font-weight: 800;
  text-align: center;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.88), 0 6px 16px rgba(20, 51, 79, 0.04);
  appearance: none;
  -webkit-appearance: none;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, background-color 0.18s ease, transform 0.18s ease;
}

.be-exam-input-inline {
  width: calc(var(--be-inline-ch, 4) * 0.86ch + 1.45rem);
  min-width: calc(var(--be-inline-ch, 4) * 0.86ch + 1.45rem);
  max-width: min(100%, calc(var(--be-inline-ch, 4) * 0.86ch + 1.45rem));
}

.be-exam-input:focus-visible,
.be-exam-filter select:focus-visible {
  outline: none;
  border-color: rgba(20, 51, 79, 0.22);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.92), 0 10px 22px rgba(20, 51, 79, 0.08);
  transform: translateY(-1px);
}

.be-exam-input:disabled {
  color: var(--color-ink);
  opacity: 0.78;
}

.be-exam-hint {
  margin: -0.25rem 0 0;
  color: var(--color-muted);
  font-size: 0.92rem;
}

.be-exam-feedback {
  display: grid;
  gap: 0.32rem;
  padding: 0.95rem 1rem;
  border: 1px solid rgba(20, 51, 79, 0.12);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.94);
}

.be-exam-feedback-idle {
  gap: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.be-review-summary-card {
  display: grid;
  gap: 0.45rem;
  margin-bottom: 1rem;
  padding: 1rem 1.1rem;
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(245, 248, 252, 0.96));
  border: 1px solid rgba(20, 51, 79, 0.08);
  box-shadow: 0 18px 38px rgba(20, 51, 79, 0.06);
}

.be-review-summary-card strong {
  font-size: clamp(1.15rem, 2vw, 1.5rem);
  color: var(--color-ink);
}

.be-review-card.is-correct {
  border-color: rgba(52, 140, 84, 0.18);
}

.be-review-card.is-wrong {
  border-color: rgba(186, 65, 65, 0.18);
}

.be-review-status {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  padding: 0.34rem 0.72rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.be-review-status.is-correct {
  color: #237247;
  background: rgba(35, 114, 71, 0.12);
}

.be-review-status.is-wrong {
  color: #b33b3b;
  background: rgba(179, 59, 59, 0.12);
}

.be-review-answer.is-correct {
  color: #237247;
}

.be-review-answer.is-wrong {
  color: #b33b3b;
}

.be-review-full {
  margin: 0;
  font-weight: 700;
  color: var(--color-ink);
}

.be-exam-feedback p {
  margin: 0;
  line-height: 1.58;
}

.be-exam-feedback.is-correct {
  border-color: rgba(22, 163, 74, 0.26);
  background: rgba(236, 253, 243, 0.92);
  color: #166534;
}

.be-exam-feedback.is-wrong {
  border-color: rgba(220, 38, 38, 0.22);
  background: rgba(254, 242, 242, 0.95);
  color: #991b1b;
}

.be-exam-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
}

.be-exam-finish-card {
  text-align: center;
}

.verb-floating-nav {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1450;
}

.verb-floating-link {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  width: 3.35rem;
  min-height: 5.4rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  pointer-events: auto;
  border: 1px solid rgba(255, 255, 255, 0.44);
  background: rgba(15, 23, 42, 0.18);
  backdrop-filter: blur(10px);
  color: #ffffff;
  text-decoration: none;
  box-shadow: 0 16px 36px rgba(15, 23, 42, 0.14);
  transition: transform 0.22s ease, background 0.22s ease, box-shadow 0.22s ease;
}

.verb-floating-link.is-prev {
  left: 0.6rem;
  border-radius: 20px;
}

.verb-floating-link.is-next {
  right: 0.6rem;
  border-radius: 20px;
}

.verb-floating-link:hover,
.verb-floating-link:focus-visible {
  background: rgba(15, 23, 42, 0.3);
  box-shadow: 0 18px 42px rgba(15, 23, 42, 0.2);
  transform: translateY(-50%) scale(1.03);
}

.verb-floating-glyph {
  font-size: 1.95rem;
  line-height: 1;
  font-weight: 800;
}

.verb-floating-tooltip {
  position: absolute;
  top: 50%;
  min-width: 10rem;
  padding: 0.66rem 0.84rem;
  border-radius: 14px;
  background: rgba(15, 23, 42, 0.9);
  color: #ffffff;
  font-size: 0.8rem;
  line-height: 1.3;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-50%) scale(0.96);
  transition: opacity 0.18s ease, transform 0.18s ease;
  white-space: nowrap;
}

.verb-floating-link.is-prev .verb-floating-tooltip {
  left: calc(100% + 0.72rem);
}

.verb-floating-link.is-next .verb-floating-tooltip {
  right: calc(100% + 0.72rem);
}

.verb-floating-link:hover .verb-floating-tooltip,
.verb-floating-link:focus-visible .verb-floating-tooltip {
  opacity: 1;
  transform: translateY(-50%) scale(1);
}

@media (max-width: 840px) {
  .be-exam-toolbar {
    grid-template-columns: 1fr 1fr;
  }

  .be-stats-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .be-exam-inline-group {
    gap: 0.22rem;
    margin: 0 0.06rem;
  }

  .be-exam-inline-wrap {
    width: auto;
    min-width: 0;
  }

  .be-exam-input-inline {
    width: calc(var(--be-inline-ch, 4) * 0.79ch + 1.15rem);
    min-width: calc(var(--be-inline-ch, 4) * 0.79ch + 1.15rem);
    max-width: min(100%, calc(var(--be-inline-ch, 4) * 0.79ch + 1.15rem));
    min-height: 1.95rem;
    padding: 0.12rem 0.52rem 0.16rem;
  }

  .be-exam-modal-dialog {
    width: min(100%, calc(100% - 0.18rem));
    max-height: 94svh;
  }

  .be-stats-grid {
    grid-template-columns: 1fr;
  }

  .be-exam-modal-header {
    gap: 0.55rem;
    align-items: start;
  }

  .be-exam-modal-header .eyebrow {
    margin-bottom: 0.35rem;
  }

  .be-exam-modal-header h2 {
    font-size: 1.42rem;
    line-height: 0.98;
  }

  .be-exam-modal-summary {
    margin: 0.3rem 0 0;
    font-size: 0.88rem;
    line-height: 1.34;
  }

  .be-exam-modal-header .exam-modal-close {
    width: 2.95rem;
    height: 2.95rem;
    min-width: 2.95rem;
  }

  .be-exam-modal-body {
    gap: 0.55rem;
  }

  .be-exam-toolbar-shell {
    border: 1px solid var(--color-line);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.94);
    box-shadow: 0 12px 28px rgba(20, 51, 79, 0.08);
    padding: 0.58rem 0.72rem;
  }

  .be-exam-toolbar-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    cursor: pointer;
    color: var(--color-primary-dark);
    font-size: 0.88rem;
    font-weight: 900;
    list-style: none;
  }

  .be-exam-toolbar-summary::-webkit-details-marker {
    display: none;
  }

  .be-exam-toolbar-summary::after {
    content: "+";
    font-size: 1.15rem;
    line-height: 1;
  }

  .be-exam-toolbar-shell[open] .be-exam-toolbar-summary::after {
    content: "−";
  }

  .be-exam-toolbar {
    grid-template-columns: 1fr 1fr;
    gap: 0.52rem;
    margin-top: 0.58rem;
  }

  .be-exam-filter {
    gap: 0.25rem;
    font-size: 0.82rem;
  }

  .be-exam-filter select {
    min-height: 2.36rem;
    padding: 0.48rem 0.64rem;
    border-radius: 14px;
  }

  .be-exam-toolbar .button {
    grid-column: 1 / -1;
    min-height: 2.36rem;
  }

  .be-exam-question-card,
  .be-exam-finish-card {
    gap: 0.68rem;
    padding: 0.78rem;
  }

  .be-exam-meta {
    gap: 0.4rem;
  }

  .be-exam-meta span {
    min-height: 1.72rem;
    padding: 0.28rem 0.56rem;
    font-size: 0.7rem;
  }

  .be-exam-prompt {
    font-size: 0.94rem;
    line-height: 1.38;
  }

  .be-exam-inputs {
    gap: 0.55rem;
  }

  .be-exam-input-word {
    font-size: 0.74rem;
  }

  .be-exam-input {
    min-height: 2.65rem;
    padding-bottom: 0.42rem;
  }

  .be-exam-hint,
  .be-exam-feedback p {
    font-size: 0.8rem;
    line-height: 1.32;
  }

  .be-exam-actions {
    gap: 0.45rem;
  }

  .be-exam-actions .button {
    flex: 1 1 0;
    min-height: 2.5rem;
    padding-inline: 0.8rem;
    font-size: 0.92rem;
  }

  .be-exam-launch-card {
    align-items: stretch;
  }

  .verb-floating-link {
    top: auto;
    bottom: 1rem;
    transform: none;
    width: 3rem;
    min-height: 3rem;
    border-radius: 999px;
  }

  .verb-floating-link:hover,
  .verb-floating-link:focus-visible {
    transform: scale(1.03);
  }

  .verb-floating-link.is-prev {
    left: 0.8rem;
  }

  .verb-floating-link.is-next {
    right: 0.8rem;
  }

  .verb-floating-tooltip {
    display: none;
  }
}
/* verb-be-exam end */