/* ========================================
   もくじページ — スライドスタイル
   デザインスタイルガイド A案（Sage & Charcoal）準拠
   ======================================== */

:root {
  --color-bg: #F8F6F2;
  --color-surface: #FFFFFF;
  --color-text: #2D2D2D;
  --color-text-secondary: #6B7280;
  --color-accent: #7C9A72;
  --color-accent-hover: #5E7E54;
  --color-border: #E5E2DC;
  --color-success: #4A8C5C;
  --color-warning: #D4A04A;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  --font-family: "Noto Sans JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Meiryo", "Yu Gothic", sans-serif;
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.8;
  letter-spacing: 0.04em;
}

a {
  color: inherit;
  text-decoration: none;
}

/* --- Page --- */
.page {
  max-width: 960px;
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg) var(--space-3xl);
}

/* --- Hero --- */
.hero {
  text-align: center;
  padding: var(--space-2xl) 0 var(--space-3xl);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-3xl);
}

.hero-eyebrow {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.hero h1 {
  font-size: 2.125rem;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-lg);
}

.hero-tagline {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.85;
  margin-bottom: var(--space-2xl);
}

.hero-meta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-md);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.meta-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-border);
}

/* --- Section --- */
.toc-section {
  margin-bottom: var(--space-3xl);
}

.section-title {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.section-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent);
  background: rgba(124, 154, 114, 0.1);
  border-radius: 99px;
  padding: 4px 12px;
  letter-spacing: 0.1em;
}

.section-title h2 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

/* --- TOC Grid --- */
.toc-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

/* --- Break Divider --- */
.toc-break {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) 0;
}

.toc-break-line {
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.toc-break-label {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-text-secondary);
  letter-spacing: 0.06em;
  background: rgba(124, 154, 114, 0.08);
  border: 1px solid var(--color-border);
  border-radius: 99px;
  padding: 4px 14px;
}

/* --- TOC Card --- */
.toc-card {
  display: flex;
  align-items: stretch;
  gap: var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: var(--space-lg);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  cursor: pointer;
}

.toc-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08), 0 2px 6px rgba(0, 0, 0, 0.04);
  border-color: var(--color-accent);
}

.toc-card:hover .toc-card-arrow {
  color: var(--color-accent);
  transform: translateX(4px);
}

.toc-card-full {
  grid-column: 1 / -1;
}

.toc-card-prep {
  border-color: rgba(212, 160, 74, 0.3);
  background: rgba(212, 160, 74, 0.04);
}

.toc-card-prep:hover {
  border-color: var(--color-warning);
}

/* Card left (number/time) */
.toc-card-left {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 64px;
  gap: 6px;
}

.toc-card-num {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #FFFFFF;
  font-size: 1.5rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.toc-card-prep .toc-card-num {
  background: var(--color-warning);
  font-size: 0.9375rem;
  letter-spacing: 0.04em;
}

.toc-card-time {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-secondary);
  background: var(--color-bg);
  border-radius: 99px;
  padding: 2px 10px;
  letter-spacing: 0.04em;
}

/* Card body */
.toc-card-body {
  flex: 1;
  min-width: 0;
}

.toc-card-body h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.02em;
  margin-bottom: 6px;
  color: var(--color-text);
}

.toc-card-body p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.75;
}

.toc-card-hint {
  display: inline-block;
  margin-top: var(--space-sm);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-warning);
  letter-spacing: 0.04em;
}

/* Card arrow */
.toc-card-arrow {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  color: var(--color-text-secondary);
  transition: color 0.2s ease, transform 0.2s ease;
}

/* --- Footer --- */
.page-footer {
  text-align: center;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-top: var(--space-3xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

/* --- Responsive --- */
@media (max-width: 720px) {
  .page {
    padding: var(--space-lg) var(--space-md) var(--space-2xl);
  }

  .hero {
    padding: var(--space-lg) 0 var(--space-2xl);
    margin-bottom: var(--space-2xl);
  }

  .hero h1 {
    font-size: 1.625rem;
    line-height: 1.5;
  }

  .hero-tagline {
    font-size: 0.9375rem;
  }

  .hero-meta {
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
  }

  .toc-grid {
    grid-template-columns: 1fr;
  }

  .toc-card-full {
    grid-column: auto;
  }

  .toc-card {
    padding: var(--space-md);
    gap: var(--space-md);
  }

  .toc-card-num {
    width: 44px;
    height: 44px;
    font-size: 1.25rem;
  }

  .toc-card-left {
    min-width: 56px;
  }
}