.conditionals-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(260px, 0.75fr);
  gap: 20px;
  align-items: start;
  margin-bottom: 6px;
}

.intro-card-conditionals {
  align-items: center;
}

.conditionals-layout {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.conditionals-sidebar {
  display: grid;
  gap: 18px;
  position: sticky;
  top: 92px;
  max-height: calc(100vh - 110px);
  overflow-y: auto;
  padding-right: 4px;
}

.conditionals-sidebar::-webkit-scrollbar {
  width: 8px;
}

.conditionals-sidebar::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.16);
  border-radius: 999px;
}

.conditionals-panel,
.conditionals-card {
  background: var(--panel);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  padding: 22px;
}

.conditionals-panel-head h2,
.conditionals-card h2,
.conditionals-card h3 {
  margin: 0 0 10px;
}

.conditionals-button-list {
  display: grid;
  gap: 10px;
}

.conditionals-select-btn {
  width: 100%;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  border-radius: 16px;
  padding: 14px 16px;
  text-align: left;
  cursor: pointer;
  font: inherit;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.conditionals-select-btn:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.06);
}

.conditionals-select-btn.active {
  background: rgba(14, 165, 233, 0.18);
  border-color: rgba(56, 189, 248, 0.45);
}

.conditionals-select-btn strong {
  display: block;
  margin-bottom: 6px;
  font-size: 1rem;
}

.conditionals-select-btn span {
  display: block;
  color: var(--muted);
  line-height: 1.45;
  font-size: 0.92rem;
}

.conditionals-content {
  display: grid;
  gap: 18px;
  min-width: 0;
}

.conditionals-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: start;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.conditionals-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
}

.conditionals-formula {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 16px;
}

.conditionals-chip {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.2);
  color: var(--accent);
  font-weight: 700;
}

.conditionals-tip {
  margin: 0 0 18px;
  padding: 16px;
  border-radius: 18px;
  border: 1px solid rgba(56, 189, 248, 0.2);
  background: rgba(56, 189, 248, 0.08);
  color: var(--muted);
  line-height: 1.6;
}

.conditionals-example-viewer {
  display: grid;
  gap: 14px;
}

.conditionals-example-nav {
  display: grid;
  grid-template-columns: 48px 1fr 48px;
  gap: 12px;
  align-items: center;
}

.conditionals-example-nav button {
  width: 48px;
  height: 48px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  border-radius: 14px;
  cursor: pointer;
  font: inherit;
  font-size: 1.2rem;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.conditionals-example-nav button:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.06);
}

.conditionals-example-counter {
  text-align: center;
  color: var(--muted);
  font-weight: 700;
}

.conditionals-example {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.03);
}

.conditionals-example-en {
  margin: 0 0 6px;
  font-weight: 700;
  color: var(--text);
}

.conditionals-example-es {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.conditionals-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.conditionals-actions-compact {
  margin-top: 20px;
}

.conditionals-actions button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 18px;
  font-weight: 600;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  cursor: pointer;
  border-radius: var(--radius-sm);
  font: inherit;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.conditionals-actions button[disabled] {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.conditionals-actions button[disabled]:hover {
  transform: none;
  background: rgba(255, 255, 255, 0.04);
}

.conditionals-exam-intro {
  display: grid;
  gap: 16px;
}

.conditionals-exam-summary {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.conditionals-actions button:hover {
  transform: translateY(-1px);
}

.conditionals-actions button:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
}

.conditionals-btn-primary {
  background: var(--primary) !important;
  border-color: transparent !important;
  color: #fff !important;
}

.conditionals-btn-primary:hover {
  background: var(--primary-hover) !important;
}

.conditionals-btn-secondary {
  background: rgba(56, 189, 248, 0.12) !important;
  border-color: rgba(56, 189, 248, 0.25) !important;
}

.conditionals-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 14px;
}

.conditionals-stat-box {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.03);
}

.conditionals-stat-box span {
  display: block;
  color: var(--muted);
  font-size: 0.88rem;
  margin-bottom: 8px;
}

.conditionals-stat-box strong {
  display: block;
  font-size: 1.2rem;
  line-height: 1.35;
  word-break: break-word;
}

.conditionals-help-box {
  margin-top: 16px;
  padding: 16px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
  line-height: 1.6;
}

.conditionals-exam-list {
  display: grid;
  gap: 14px;
}

.conditionals-exam-item {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.03);
}

.conditionals-exam-item h3 {
  margin: 0 0 10px;
  font-size: 1rem;
}

.conditionals-exam-sentence {
  color: var(--text);
  font-size: 1rem;
  line-height: 1.8;
  word-break: break-word;
}

.conditionals-exam-result {
  min-height: 24px;
  margin-top: 10px;
  font-weight: 700;
}

.conditionals-exam-result.ok {
  color: #22c55e;
}

.conditionals-exam-result.error {
  color: #ef4444;
}

.conditionals-exam-result.answer {
  color: #60a5fa;
}

.conditionals-review-empty {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.conditionals-review-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 14px;
}

.conditionals-review-item {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.03);
}

.conditionals-review-item.ok {
  border-color: rgba(34, 197, 94, 0.32);
  background: rgba(34, 197, 94, 0.06);
}

.conditionals-review-item.error {
  border-color: rgba(249, 115, 22, 0.32);
  background: rgba(249, 115, 22, 0.06);
}

.conditionals-review-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: start;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.conditionals-review-badge {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.04);
}

.conditionals-review-status {
  font-weight: 700;
}

.conditionals-review-status.ok {
  color: #22c55e;
}

.conditionals-review-status.error {
  color: #f97316;
}

.conditionals-review-question,
.conditionals-review-sentence,
.conditionals-review-user,
.conditionals-review-correct {
  margin: 0;
  line-height: 1.6;
}

.conditionals-review-sentence {
  color: var(--text);
  line-height: 2;
  word-break: break-word;
}

.conditionals-review-question + .conditionals-review-user,
.conditionals-review-question + .conditionals-review-sentence,
.conditionals-review-sentence + .conditionals-review-user,
.conditionals-review-user + .conditionals-review-correct {
  margin-top: 8px;
}

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

.conditionals-modal {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.conditionals-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(3, 7, 18, 0.72);
  backdrop-filter: blur(3px);
}

.conditionals-modal-dialog {
  position: relative;
  z-index: 1;
  width: min(100%, 980px);
  max-height: 90vh;
  overflow: auto;
  background: var(--panel);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  border-radius: 24px;
  padding: 24px;
}

.conditionals-theory-dialog {
  max-width: 980px;
}

.conditionals-theory-body {
  display: grid;
  gap: 18px;
}

.conditionals-theory-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.conditionals-theory-section {
  border: 1px solid var(--border);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.03);
  padding: 18px;
}

.conditionals-theory-section h3 {
  margin: 0 0 10px;
}

.conditionals-theory-section p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.conditionals-theory-list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.6;
}

.conditionals-theory-highlight {
  border: 1px solid rgba(56, 189, 248, 0.2);
  background: rgba(56, 189, 248, 0.08);
  border-radius: 14px;
  padding: 14px;
}

.conditionals-theory-examples {
  display: grid;
  gap: 16px;
}

.conditionals-example-viewer-modal {
  gap: 16px;
}

.conditionals-modal-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 18px;
}

.conditionals-modal-close {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  border-radius: 14px;
  width: 44px;
  height: 44px;
  font-size: 1.6rem;
  cursor: pointer;
}

.conditionals-modal-meta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.conditionals-modal-summary {
  margin-bottom: 18px;
  padding: 16px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  line-height: 1.6;
}

.conditionals-modal-summary.ok {
  border-color: rgba(34, 197, 94, 0.32);
  background: rgba(34, 197, 94, 0.08);
}

.conditionals-modal-summary.error {
  border-color: rgba(249, 115, 22, 0.32);
  background: rgba(249, 115, 22, 0.08);
}

.conditionals-exam-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 16px;
}

.conditionals-exam-item {
  padding: 18px;
}

.conditionals-exam-item .section-copy {
  margin: 0 0 10px;
}

.conditionals-exam-line {
  margin: 0;
  color: var(--text);
  line-height: 2;
  font-size: 1rem;
  word-break: break-word;
}

.conditionals-modal-footer {
  margin-top: 20px;
  border-top: 1px solid var(--border);
  padding-top: 18px;
}

.conditionals-modal-footer-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.conditionals-modal-stat {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.03);
}

.conditionals-modal-stat span {
  display: block;
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 8px;
}

.conditionals-modal-stat strong {
  display: block;
  font-size: 1.15rem;
  line-height: 1.35;
}

.conditionals-modal-grade-badge {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1400;
  display: grid;
  gap: 10px;
  justify-items: end;
  max-width: min(280px, calc(100vw - 24px));
  cursor: pointer;
  pointer-events: auto;
  --conditionals-grade-base: #22c55e;
  --conditionals-grade-soft: rgba(34, 197, 94, 0.18);
  --conditionals-grade-ring: rgba(34, 197, 94, 0.42);
  --conditionals-grade-text: #06210f;
}

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

.conditionals-grade-circle {
  width: 102px;
  height: 102px;
  border-radius: 999px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 10px;
  background:
    radial-gradient(circle at 30% 25%, rgba(255, 255, 255, 0.38), transparent 30%),
    linear-gradient(160deg, var(--conditionals-grade-base), var(--conditionals-grade-soft));
  border: 4px solid var(--conditionals-grade-ring);
  color: var(--conditionals-grade-text);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(10px);
}

.conditionals-grade-label {
  display: block;
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  opacity: 0.92;
}

.conditionals-grade-value {
  display: block;
  margin-top: 4px;
  font-size: 2rem;
  line-height: 1;
}

.conditionals-grade-message {
  margin: 0;
  max-width: 250px;
  padding: 10px 14px;
  border-radius: 16px;
  border: 1px solid var(--conditionals-grade-ring);
  background: rgba(15, 23, 42, 0.88);
  color: #f8fafc;
  text-align: right;
  line-height: 1.45;
  font-size: 0.92rem;
  box-shadow: 0 12px 26px rgba(0, 0, 0, 0.22);
}

.sentence-inline-input {
  display: inline-block;
  vertical-align: middle;
  width: min(150px, 28vw);
  min-width: 84px;
  max-width: 100%;
  margin: 2px 4px;
  padding: 7px 9px;
  border-radius: 12px;
  border: 2px solid rgba(203, 213, 225, 0.22);
  background: rgba(255, 255, 255, 0.96);
  color: #0f172a;
  font: inherit;
  text-align: center;
  outline: none;
  transition:
    border-color 0.2s ease,
    background 0.2s ease,
    color 0.2s ease,
    box-shadow 0.2s ease,
    transform 0.15s ease;
}

.sentence-inline-input::placeholder {
  color: #64748b;
  opacity: 0.82;
  font-style: italic;
  font-weight: 500;
  text-align: center;
  transition: opacity 0.15s ease, color 0.15s ease;
}

.sentence-inline-input:focus {
  border-color: #6366f1;
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.16);
}

.sentence-inline-input:focus::placeholder {
  opacity: 0;
}

.sentence-inline-input.correct {
  border-color: var(--success);
  background: #dcfce7;
  color: #166534;
  font-weight: 700;
}

.sentence-inline-input.incorrect {
  border-color: var(--danger);
  background: #fee2e2;
  color: #991b1b;
  font-weight: 700;
  cursor: pointer;
}

.sentence-inline-input.show-answer {
  border-color: var(--info);
  background: #dbeafe;
  color: #1d4ed8;
  font-weight: 700;
  cursor: pointer;
}

.sentence-inline-input.correct,
.sentence-inline-input.incorrect,
.sentence-inline-input.show-answer {
  animation: sentencePop 0.18s ease;
}

@keyframes sentencePop {
  0% {
    transform: scale(0.98);
  }
  100% {
    transform: scale(1);
  }
}

@media (max-width: 1024px) {
  .conditionals-layout {
    grid-template-columns: 1fr;
  }

  .conditionals-sidebar {
    position: static;
    top: auto;
    max-height: none;
    overflow: visible;
    padding-right: 0;
  }

  .conditionals-stats-grid,
  .conditionals-modal-footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 720px) {
  .conditionals-panel,
  .conditionals-card,
  .conditionals-modal-dialog {
    padding: 18px;
  }

  .conditionals-modal {
    padding: 14px;
  }

  .conditionals-example-nav {
    grid-template-columns: 44px 1fr 44px;
  }

  .conditionals-example-nav button {
    width: 44px;
    height: 44px;
  }

  .conditionals-stats-grid,
  .conditionals-modal-footer-grid {
    grid-template-columns: 1fr;
  }

  .sentence-inline-input {
    min-width: 76px;
    padding: 8px 8px;
    font-size: 0.95rem;
  }

  .conditionals-modal-grade-badge {
    top: 12px;
    right: 12px;
    max-width: calc(100vw - 24px);
  }

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

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

  .conditionals-grade-message {
    max-width: 220px;
    font-size: 0.85rem;
    padding: 9px 12px;
  }
}