/* ==========================================================================
   STYLE.CSS — Design tokens & komponen utama
   Tema: Edukasi ramah & ceria untuk siswa SMP.
   Palet: biru muda + putih (aksen kuning hangat untuk semangat belajar).
   Silakan ubah nilai variabel di :root untuk mengganti tema warna/tipografi.
   ========================================================================== */

/* -------------------- 1. TYPE SCALE (fluid, clamp) -------------------- */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.25rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 4.5rem);

  /* -------------------- 2. SPACING (4px system) -------------------- */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* -------------------- 3. RADIUS & SHADOW -------------------- */
  --radius-sm: 0.5rem;
  --radius-md: 0.875rem;
  --radius-lg: 1.25rem;
  --radius-xl: 1.75rem;
  --radius-full: 9999px;
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* -------------------- 4. FONTS -------------------- */
  --font-display: 'Baloo 2', 'Chillax', 'Comic Sans MS', sans-serif;
  --font-body: 'Nunito', 'Plus Jakarta Sans', sans-serif;

  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
}

/* -------------------- 5. WARNA — TEMA TERANG (biru muda + putih) -------------------- */
:root,
[data-theme='light'] {
  --color-bg: #f4faff;
  --color-surface: #ffffff;
  --color-surface-2: #eef7ff;
  --color-surface-offset: #e3f2fe;
  --color-surface-offset-2: #d6ecfc;
  --color-divider: #d3e8f7;
  --color-border: #bfdff5;

  --color-text: #17324a;
  --color-text-muted: #4c6d85;
  --color-text-faint: #93aec2;
  --color-text-inverse: #ffffff;

  /* Aksen utama: biru langit ceria */
  --color-primary: #2196d8;
  --color-primary-hover: #1a7cb5;
  --color-primary-active: #145f8c;
  --color-primary-highlight: #d7edfb;

  /* Aksen kedua: kuning hangat (semangat belajar) */
  --color-accent: #ffb703;
  --color-accent-hover: #e6a300;
  --color-accent-highlight: #fff2d1;

  /* Warna semantik untuk kuis / status */
  --color-success: #2f9e5f;
  --color-success-highlight: #d9f3e4;
  --color-warning: #e08a1e;
  --color-warning-highlight: #fbe6c9;
  --color-error: #d1495b;
  --color-error-highlight: #fbdde1;

  --shadow-sm: 0 1px 3px rgba(33, 150, 216, 0.08);
  --shadow-md: 0 8px 20px rgba(33, 150, 216, 0.12);
  --shadow-lg: 0 18px 40px rgba(33, 150, 216, 0.18);
}

/* -------------------- 6. WARNA — TEMA GELAP -------------------- */
[data-theme='dark'] {
  --color-bg: #0d1b26;
  --color-surface: #122736;
  --color-surface-2: #163243;
  --color-surface-offset: #1b3a4d;
  --color-surface-offset-2: #204759;
  --color-divider: #23465a;
  --color-border: #2a5468;

  --color-text: #e6f3fb;
  --color-text-muted: #9cc0d6;
  --color-text-faint: #628299;
  --color-text-inverse: #0d1b26;

  --color-primary: #5cc2f2;
  --color-primary-hover: #7fd0f6;
  --color-primary-active: #3aa9dd;
  --color-primary-highlight: #1c4a5f;

  --color-accent: #ffcc40;
  --color-accent-hover: #ffd766;
  --color-accent-highlight: #4a3c14;

  --color-success: #5fd193;
  --color-success-highlight: #163a2a;
  --color-warning: #f0aa4d;
  --color-warning-highlight: #4a3417;
  --color-error: #ec7c8c;
  --color-error-highlight: #4a2229;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 18px 40px rgba(0, 0, 0, 0.45);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #0d1b26;
    --color-surface: #122736;
    --color-surface-2: #163243;
    --color-surface-offset: #1b3a4d;
    --color-surface-offset-2: #204759;
    --color-divider: #23465a;
    --color-border: #2a5468;
    --color-text: #e6f3fb;
    --color-text-muted: #9cc0d6;
    --color-text-faint: #628299;
    --color-text-inverse: #0d1b26;
    --color-primary: #5cc2f2;
    --color-primary-hover: #7fd0f6;
    --color-primary-active: #3aa9dd;
    --color-primary-highlight: #1c4a5f;
    --color-accent: #ffcc40;
    --color-accent-hover: #ffd766;
    --color-accent-highlight: #4a3c14;
    --color-success: #5fd193;
    --color-success-highlight: #163a2a;
    --color-warning: #f0aa4d;
    --color-warning-highlight: #4a3417;
    --color-error: #ec7c8c;
    --color-error-highlight: #4a2229;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 18px 40px rgba(0, 0, 0, 0.45);
  }
}

/* ============================================================
   LAYOUT UMUM
   ============================================================ */
main { display: block; }

.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

.container--narrow { max-width: var(--content-default); }

section {
  padding-block: clamp(var(--space-10), 6vw, var(--space-20));
}

/* ============================================================
   HEADER & NAVIGASI
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-divider);
  transition: box-shadow var(--transition-interactive);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-3);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-text);
  text-decoration: none;
  white-space: nowrap;
}

.brand svg { flex-shrink: 0; }

.brand-text { display: none; }
@media (min-width: 480px) {
  .brand-text { display: inline; }
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.main-nav a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  text-decoration: none;
  white-space: nowrap;
}

.main-nav a:hover {
  background: var(--color-primary-highlight);
  color: var(--color-primary);
}

.main-nav a.active {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  flex-shrink: 0;
}
.theme-toggle:hover { background: var(--color-primary-highlight); }

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  align-items: center;
  justify-content: center;
  color: var(--color-text);
}

@media (max-width: 860px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-divider);
    padding: var(--space-3) var(--space-5) var(--space-5);
    box-shadow: var(--shadow-md);
    gap: var(--space-1);
  }
  .main-nav.open { display: flex; }
  .main-nav a { justify-content: flex-start; padding: var(--space-3) var(--space-4); }
  .nav-toggle { display: inline-flex; }
}

/* ============================================================
   HERO (BERANDA)
   ============================================================ */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
  background:
    radial-gradient(circle at 15% 20%, color-mix(in oklab, var(--color-primary) 14%, transparent), transparent 55%),
    radial-gradient(circle at 85% 10%, color-mix(in oklab, var(--color-accent) 18%, transparent), transparent 50%);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  font-weight: 700;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-5);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--color-text);
  max-width: 18ch;
  margin-bottom: var(--space-5);
}

.hero h1 .accent { color: var(--color-primary); }

.hero-lead {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 62ch;
  margin-bottom: var(--space-8);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* ============================================================
   TOMBOL
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: var(--text-sm);
  text-decoration: none;
  border: 2px solid transparent;
  min-height: 44px;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--color-primary-hover); box-shadow: var(--shadow-md); transform: translateY(-1px); }
.btn-primary:active { background: var(--color-primary-active); transform: translateY(0); }

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-primary);
  border-color: var(--color-border);
}
.btn-secondary:hover { background: var(--color-primary-highlight); border-color: var(--color-primary); }

.btn-accent {
  background: var(--color-accent);
  color: #4a3400;
}
.btn-accent:hover { background: var(--color-accent-hover); }

.btn-sm { padding: var(--space-2) var(--space-4); font-size: var(--text-xs); min-height: 36px; }

/* ============================================================
   KARTU TUJUAN PEMBELAJARAN (BERANDA)
   ============================================================ */
.goals-section { background: var(--color-surface); }

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.section-lead {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  max-width: 65ch;
  margin-bottom: var(--space-10);
}

.goal-list {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.goal-card {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-5);
  background: var(--color-surface-2);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
}

.goal-num {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: var(--text-sm);
}

.goal-card p { font-size: var(--text-sm); color: var(--color-text); }

/* ============================================================
   MENGAPA PENTING
   ============================================================ */
.why-section {
  background: var(--color-surface-offset);
}

.why-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  align-items: center;
}

@media (min-width: 860px) {
  .why-grid { grid-template-columns: 1.1fr 0.9fr; }
}

.why-card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-divider);
}

.why-card p { font-size: var(--text-base); color: var(--color-text); }

.why-illustration {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ============================================================
   DAFTAR BAB (GRID KARTU)
   ============================================================ */
.chapters-grid {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.chapter-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
}

.chapter-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.chapter-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--color-primary-highlight);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
}

.chapter-sem {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.chapter-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
}

.chapter-card .go {
  margin-top: auto;
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

/* ============================================================
   SELECTOR BAB (dropdown di halaman Materi/Latihan/Video)
   ============================================================ */
.chapter-picker {
  background: var(--color-surface-2);
  border-bottom: 1px solid var(--color-divider);
  padding-block: var(--space-5);
}

.picker-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4);
}

.picker-label {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.chapter-select {
  flex: 1;
  min-width: 220px;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: var(--text-sm);
  font-weight: 600;
}

.picker-nav {
  display: flex;
  gap: var(--space-2);
}

.picker-nav button {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}
.picker-nav button:hover { background: var(--color-primary-highlight); border-color: var(--color-primary); }
.picker-nav button:disabled { opacity: 0.4; cursor: not-allowed; }

/* ============================================================
   PAGE HEADER (halaman interior)
   ============================================================ */
.page-hero {
  padding-block: clamp(var(--space-10), 6vw, var(--space-16));
  background: var(--color-surface-offset);
  border-bottom: 1px solid var(--color-divider);
}

.page-hero .chapter-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: var(--text-xs);
  margin-bottom: var(--space-4);
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.page-hero p { color: var(--color-text-muted); max-width: 65ch; }

/* ============================================================
   MATERI — konten
   ============================================================ */
.materi-body {
  max-width: 72ch;
  margin-inline: auto;
}

.materi-section {
  margin-bottom: var(--space-10);
  padding-bottom: var(--space-8);
  border-bottom: 1px dashed var(--color-divider);
}
.materi-section:last-child { border-bottom: none; }

.materi-section h2 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.materi-section p { color: var(--color-text); margin-bottom: var(--space-3); }

.materi-section ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-block: var(--space-3);
  padding-left: 0;
}

.materi-section ul li {
  list-style: none;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-2);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-primary);
  color: var(--color-text);
  font-size: var(--text-sm);
}

.source-note {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.source-note a { color: var(--color-text-muted); }

/* Kartu contoh soal */
.example-card {
  background: var(--color-accent-highlight);
  border: 1px solid color-mix(in oklab, var(--color-accent) 40%, transparent);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
}

.example-card .label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 800;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: #7a5900;
  margin-bottom: var(--space-3);
}
[data-theme='dark'] .example-card .label { color: #ffe9a8; }

.example-card .soal { font-weight: 700; color: var(--color-text); margin-bottom: var(--space-4); }

.example-card details summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--color-primary);
  font-size: var(--text-sm);
  list-style: none;
}
.example-card details summary::-webkit-details-marker { display: none; }
.example-card details summary::before { content: '▸ '; }
.example-card details[open] summary::before { content: '▾ '; }
.example-card details p { margin-top: var(--space-3); color: var(--color-text); }

/* ============================================================
   LATIHAN SOAL / KUIS
   ============================================================ */
.quiz-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.quiz-item {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}

.quiz-item .q-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-weight: 800;
  font-size: var(--text-xs);
  margin-bottom: var(--space-3);
}

.quiz-item .q-text { font-weight: 700; color: var(--color-text); margin-bottom: var(--space-4); }

.quiz-item textarea {
  width: 100%;
  min-height: 100px;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border: 2px solid var(--color-border);
  background: var(--color-surface-2);
  color: var(--color-text);
  font-size: var(--text-sm);
  resize: vertical;
}
.quiz-item textarea:focus { outline: none; border-color: var(--color-primary); background: var(--color-surface); }

.quiz-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: var(--space-4);
  gap: var(--space-3);
}

.save-status {
  font-size: var(--text-xs);
  color: var(--color-success);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  opacity: 0;
  transition: opacity var(--transition-interactive);
}
.save-status.show { opacity: 1; }

/* Kuis interaktif pilihan ganda */
.mini-quiz {
  margin-top: var(--space-16);
  padding: var(--space-8);
  background: var(--color-primary-highlight);
  border-radius: var(--radius-xl);
}

.mini-quiz h2 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}
.mini-quiz > p { color: var(--color-text-muted); margin-bottom: var(--space-6); font-size: var(--text-sm); }

.mq-question { margin-bottom: var(--space-8); }
.mq-question .mq-q-text { font-weight: 700; margin-bottom: var(--space-3); color: var(--color-text); }

.mq-options {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.mq-option {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: var(--text-sm);
  color: var(--color-text);
  text-align: left;
}
.mq-option:hover { border-color: var(--color-primary); }
.mq-option.correct { border-color: var(--color-success); background: var(--color-success-highlight); }
.mq-option.wrong { border-color: var(--color-error); background: var(--color-error-highlight); }
.mq-option:disabled { cursor: default; }

.mq-result {
  margin-top: var(--space-8);
  padding: var(--space-5);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  text-align: center;
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-primary);
  display: none;
}
.mq-result.show { display: block; }

/* ============================================================
   VIDEO / MULTIMEDIA
   ============================================================ */
.video-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background: var(--color-surface-offset-2);
}
.video-wrapper iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.video-caption {
  margin-top: var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.media-note {
  margin-top: var(--space-10);
  padding: var(--space-6);
  background: var(--color-surface-2);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.media-note strong { color: var(--color-text); }

/* ============================================================
   RINGKASAN & TIPS
   ============================================================ */
.summary-grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
}
@media (min-width: 780px) {
  .summary-grid { grid-template-columns: 1fr 1fr; }
}

.summary-card, .tips-card {
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-divider);
}

.summary-card { background: var(--color-surface); }
.tips-card { background: var(--color-accent-highlight); border-color: color-mix(in oklab, var(--color-accent) 40%, transparent); }

.summary-card h2, .tips-card h2 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.summary-card ul, .tips-card ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.summary-card li, .tips-card li {
  display: flex;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text);
}

.summary-card li::before { content: '✓'; color: var(--color-primary); font-weight: 800; flex-shrink: 0; }
.tips-card li::before { content: '💡'; flex-shrink: 0; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--color-surface-offset);
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-10);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
}

.footer-inner p { font-size: var(--text-sm); color: var(--color-text-muted); }
.footer-links { display: flex; gap: var(--space-4); }
.footer-links a { font-size: var(--text-sm); color: var(--color-text-muted); text-decoration: none; }
.footer-links a:hover { color: var(--color-primary); }

/* ============================================================
   PROGRES BAB (indikator kecil di halaman Materi)
   ============================================================ */
.progress-dots {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-top: var(--space-6);
}
.progress-dots a {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  font-weight: 700;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  color: var(--color-text-muted);
  text-decoration: none;
}
.progress-dots a.active { background: var(--color-primary); border-color: var(--color-primary); color: var(--color-text-inverse); }
.progress-dots a:hover { border-color: var(--color-primary); }

/* ============================================================
   UTILITAS
   ============================================================ */
.text-center { text-align: center; }
.mt-8 { margin-top: var(--space-8); }
.mb-0 { margin-bottom: 0; }