/* Question page styles */
.q-page {
  position: relative;
  z-index: 1;
  padding: 40px 0 80px;
}

.q-header {
  margin-bottom: 36px;
}

.q-breadcrumb {
  font-size: 0.85rem;
  color: var(--text-faint);
  margin-bottom: 12px;
}

.q-breadcrumb a {
  color: var(--accent);
}

.q-breadcrumb a:hover {
  text-decoration: underline;
}

.q-header h1 {
  font-family: var(--serif);
  font-size: 2.2rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}

.q-intro {
  color: var(--text-soft);
  font-size: 1.05rem;
  max-width: 520px;
  margin-bottom: 16px;
}

.q-stats {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.diff-tag {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 4px 10px;
  border-radius: 6px;
  white-space: nowrap;
}

.diff-tag.easy {
  background: #d1fae5;
  color: #065f46;
}

.diff-tag.medium {
  background: #fef3c7;
  color: #92400e;
}

.diff-tag.hard {
  background: #fee2e2;
  color: #991b1b;
}

[data-theme="dark"] .diff-tag.easy {
  background: #064e3b;
  color: #6ee7b7;
}

[data-theme="dark"] .diff-tag.medium {
  background: #78350f;
  color: #fcd34d;
}

[data-theme="dark"] .diff-tag.hard {
  background: #7f1d1d;
  color: #fca5a5;
}

/* Question card */
.question {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 26px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.question:hover {
  border-color: color-mix(in srgb, var(--accent) 25%, var(--line));
  box-shadow: var(--shadow-lift);
}

.q-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.q-num {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--accent);
}

.q-marks {
  font-size: 0.8rem;
  color: var(--text-faint);
  margin-left: auto;
}

.q-body {
  font-size: 1.02rem;
  line-height: 1.65;
  margin-bottom: 16px;
}

.q-body p {
  margin-bottom: 8px;
}

.q-body p:last-child {
  margin-bottom: 0;
}

.answer-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: inherit;
  background: var(--accent-soft);
  color: var(--accent);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.answer-btn:hover {
  background: var(--accent);
  color: #fff;
}

[data-theme="dark"] .answer-btn:hover {
  color: #0c0b0a;
}

.answer-btn.open {
  background: var(--text);
  color: var(--bg);
}

.answer {
  display: none;
  margin-top: 16px;
  padding: 18px 20px;
  background: color-mix(in srgb, var(--accent-soft) 55%, var(--bg-card));
  border-radius: 12px;
  border: 1px solid color-mix(in srgb, var(--accent) 22%, var(--line));
  border-left: 4px solid var(--accent);
  font-size: 0.95rem;
  line-height: 1.65;
  box-shadow: 0 1px 3px rgba(13, 148, 136, 0.06);
}

[data-theme="dark"] .answer {
  background: color-mix(in srgb, var(--accent-soft) 40%, var(--bg-card));
  border-color: color-mix(in srgb, var(--accent) 30%, var(--line));
  box-shadow: none;
}

.answer.open {
  display: block;
  animation: rise 0.28s ease;
}

.answer p {
  margin-bottom: 8px;
}

.answer p:last-child {
  margin-bottom: 0;
}

.q-footer-nav {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 40px;
  flex-wrap: wrap;
}

/* Why strip on homepage */
.why-strip {
  padding: 40px 0 !important;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.why-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 20px;
  box-shadow: var(--shadow);
}

.why-icon {
  font-size: 1.5rem;
  display: block;
  margin-bottom: 10px;
}

.why-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.why-card p {
  font-size: 0.875rem;
  color: var(--text-soft);
  line-height: 1.45;
}

/* Live badge on cards */
.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 4px;
}

.live-badge {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  background: var(--accent);
  color: #fff;
  border-radius: 6px;
}

[data-theme="dark"] .live-badge {
  color: #0c0b0a;
}

.card-live {
  border-color: color-mix(in srgb, var(--accent) 30%, var(--line));
}

.card-live:hover {
  border-color: var(--accent);
}


/* Topic page site footer */
.topic-footer {
  margin-top: 48px;
  padding: 24px 0 32px;
  border-top: 1px solid var(--line, #e5e5e5);
}
.topic-footer .footer-note {
  font-size: 0.8rem;
  color: var(--text-faint, #888);
  margin: 0 0 10px;
}
.topic-footer .footer-disclaimer {
  font-size: 0.7rem;
  line-height: 1.5;
  color: var(--text-faint, #888);
  max-width: 640px;
  margin: 0;
}

/* Study tip */
.q-tip {
  margin-top: 16px;
  padding: 12px 16px;
  background: var(--accent-soft);
  border-radius: 10px;
  border-left: 3px solid var(--accent);
  font-size: 0.9rem;
  color: var(--text-soft);
  line-height: 1.45;
  max-width: 560px;
}

.q-tip strong {
  color: var(--accent-deep);
  font-weight: 700;
}

[data-theme="dark"] .q-tip strong {
  color: var(--accent);
}

/* Difficulty filter */
.q-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.q-filter-btn {
  padding: 8px 14px;
  font-size: 0.8rem;
  font-weight: 600;
  font-family: inherit;
  border: 1px solid var(--line);
  background: var(--bg-card);
  color: var(--text-soft);
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.q-filter-btn:hover {
  border-color: var(--accent);
  color: var(--text);
}

.q-filter-btn.active {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

/* Larger touch targets on phones */
@media (max-width: 640px) {
  .q-page {
    padding: 24px 0 60px;
  }

  .q-header h1 {
    font-size: 1.75rem;
  }

  .question {
    padding: 18px 16px;
  }

  .answer-btn {
    width: 100%;
    justify-content: center;
    padding: 12px 16px;
    font-size: 0.95rem;
    min-height: 44px;
  }

  .q-filter-btn {
    min-height: 40px;
    padding: 8px 16px;
  }

  .q-footer-nav {
    flex-direction: column;
  }

  .q-footer-nav .btn {
    width: 100%;
    justify-content: center;
  }
}