/* Table of Contents page */
.toc-page { padding: 48px 0 80px; }

.toc-hero { text-align: center; padding: 24px 0 40px; }
.toc-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 56px);
  margin: 0 0 12px;
  letter-spacing: -.02em;
}
.toc-hero h1 em {
  color: var(--accent);
  font-style: italic;
}

.toc-sub {
  font-size: 17px;
  color: var(--ink-soft);
  margin: 0 0 32px;
}

.overall-progress {
  max-width: 640px;
  margin: 0 auto;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.progress-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 16px;
}

.progress-stats div {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.progress-stats strong {
  font-family: var(--font-display);
  font-size: 32px;
  color: var(--accent);
  line-height: 1;
}

.progress-stats span {
  font-size: 13px;
  color: var(--ink-mute);
  margin-top: 4px;
}

.progress-bar {
  height: 8px;
  background: var(--line);
  border-radius: 99px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  width: 0;
  border-radius: 99px;
  transition: width .6s ease;
}

/* Continue card */
.continue-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 12%, var(--bg-elev)) 0%, var(--bg-elev) 100%);
  border: 1px solid var(--accent);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  margin: 32px 0 40px;
}

.continue-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--accent);
  margin: 0 0 6px;
  font-weight: 600;
}

.continue-card h3 {
  font-family: var(--font-display);
  font-size: 22px;
  margin: 0;
  color: var(--ink);
}

@media (max-width: 600px) {
  .progress-stats { grid-template-columns: 1fr; gap: 20px; }
  .continue-card { flex-direction: column; align-items: flex-start; gap: 16px; padding: 20px; }
  .toc-hero h1 { font-size: 32px; }
}

/* Part section */
.toc-part {
  margin-top: 56px;
}

.part-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 12px;
  margin-bottom: 20px;
}

.part-header h2 {
  font-family: var(--font-display);
  font-size: 28px;
  margin: 0 0 4px;
  letter-spacing: -.01em;
}

.part-header p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.part-progress {
  text-align: right;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.part-pct {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  color: var(--accent);
}

.part-fraction {
  font-size: 12px;
  color: var(--ink-mute);
  font-family: var(--font-mono);
}

.ch-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 8px;
}

.ch-item a {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 18px;
  border-radius: 10px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  color: var(--ink);
  font-weight: 500;
  font-size: 15px;
  transition: all .15s ease;
}

.ch-item a:hover {
  border-color: var(--accent);
  transform: translateX(4px);
  color: var(--ink);
}

.ch-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-mute);
  font-weight: 600;
  min-width: 24px;
}

.ch-title { flex: 1; }
.ch-title small { color: var(--accent-2); font-weight: 400; }

.ch-meta {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 12px;
}

.ch-quiz {
  background: var(--accent-soft);
  color: var(--accent-ink);
  padding: 2px 8px;
  border-radius: 99px;
  font-weight: 600;
}

.ch-check {
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  font-size: 12px;
  font-weight: 700;
}

[data-theme="dark"] .ch-check { color: #04201d; }

.ch-item.done a {
  background: color-mix(in srgb, var(--accent) 6%, var(--bg-elev));
  border-color: color-mix(in srgb, var(--accent) 40%, var(--line));
}

.ch-item.planned a {
  opacity: .55;
  cursor: not-allowed;
  pointer-events: auto;
}

.ch-item.planned a:hover {
  transform: none;
  border-color: var(--line);
}