/* ============================================================
   香港童軍進度性獎章橫向對照表 — Design tokens
   ============================================================ */
:root,
[data-theme='light'] {
  --color-bg: #faf7ef;
  --color-surface: #ffffff;
  --color-surface-2: #f4efe1;
  --color-surface-offset: #efe8d6;
  --color-border: #ded4bb;
  --color-divider: #e8e0cb;
  --color-text: #23281f;
  --color-text-muted: #6b6a5a;
  --color-text-faint: #a19d87;
  --color-text-inverse: #faf8f0;

  --color-primary: #8031a7;
  --color-primary-hover: #601f83;
  --color-primary-active: #481864;
  --color-primary-highlight: #eee0f5;

  --color-gold: #b07f22;
  --color-gold-hover: #8f6a1b;
  --color-gold-highlight: #f0e3c0;

  --award-disc: #3f7d5c;
  --award-disc-tint: #dcece2;
  --award-std: #2b6690;
  --award-std-tint: #dae7ee;
  --award-adv: #a1436f;
  --award-adv-tint: #f0dde7;
  --award-chief: #a8781f;
  --award-chief-tint: #f1e5c9;

  --shadow-sm: 0 1px 2px rgba(35, 40, 31, 0.06);
  --shadow-md: 0 4px 16px rgba(35, 40, 31, 0.08);
  --shadow-lg: 0 16px 40px rgba(35, 40, 31, 0.14);

  --radius-sm: 0.4rem;
  --radius-md: 0.7rem;
  --radius-lg: 1.1rem;
  --radius-full: 9999px;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --font-display: 'Noto Serif TC', 'Songti TC', Georgia, serif;
  --font-body: 'Noto Sans TC', 'PingFang HK', 'Microsoft JhengHei', sans-serif;
}

[data-theme='dark'] {
  --color-bg: #14170f;
  --color-surface: #1b1f15;
  --color-surface-2: #21251a;
  --color-surface-offset: #262b1c;
  --color-border: #333a26;
  --color-divider: #2a301f;
  --color-text: #e3ded0;
  --color-text-muted: #a3a08b;
  --color-text-faint: #6f6c5a;
  --color-text-inverse: #1a1d13;

  --color-primary: #b57fd6;
  --color-primary-hover: #c99bdf;
  --color-primary-active: #dbb8ea;
  --color-primary-highlight: #372a40;

  --color-gold: #d9ae52;
  --color-gold-hover: #e7c26f;
  --color-gold-highlight: #3a3220;

  --award-disc: #79bd97;
  --award-disc-tint: #223328;
  --award-std: #78aed3;
  --award-std-tint: #202c36;
  --award-adv: #d98bb9;
  --award-adv-tint: #33232c;
  --award-chief: #e0b455;
  --award-chief-tint: #372f1d;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
}

/* ============================================================
   Base reset
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 6.5rem;
}
body {
  min-height: 100dvh;
  line-height: 1.7;
  font-family: var(--font-body);
  font-size: clamp(0.95rem, 0.9rem + 0.2vw, 1.0625rem);
  color: var(--color-text);
  background: var(--color-bg);
  transition: background var(--transition-interactive), color var(--transition-interactive);
}
img, svg { display: block; max-width: 100%; }
ul[role='list'], ol[role='list'] { list-style: none; }
button, input { font: inherit; color: inherit; }
h1, h2, h3, h4 { text-wrap: balance; line-height: 1.3; font-family: var(--font-display); }
p, li { text-wrap: pretty; }
a { color: var(--color-primary); }
::selection { background: color-mix(in oklab, var(--color-primary) 30%, transparent); }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: var(--radius-sm); }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: var(--color-primary); color: var(--color-text-inverse);
  padding: 0.75rem 1.25rem; border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; }

/* ============================================================
   Header
   ============================================================ */
.site-header {
  position: sticky; top: 0; z-index: 60;
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-divider);
}
.header-inner {
  max-width: 1180px; margin-inline: auto;
  padding: 0.75rem 1.5rem;
  display: flex; align-items: center; gap: 1.25rem;
}
.brand { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; color: var(--color-text); flex-shrink: 0; }
.brand-mark {
  flex-shrink: 0; display: block; width: 30px; height: 28px;
  background-color: var(--color-primary);
  -webkit-mask-image: url('scout-emblem-mask.png');
  mask-image: url('scout-emblem-mask.png');
  -webkit-mask-size: contain; mask-size: contain;
  -webkit-mask-repeat: no-repeat; mask-repeat: no-repeat;
  -webkit-mask-position: center; mask-position: center;
  transition: background-color var(--transition-interactive);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-family: var(--font-display); font-size: 0.95rem; font-weight: 700; }
.brand-text em { font-style: normal; font-size: 0.7rem; color: var(--color-text-muted); letter-spacing: 0.02em; }

.cat-nav {
  display: flex; gap: 0.4rem; overflow-x: auto; flex: 1;
  scrollbar-width: none; -ms-overflow-style: none;
  mask-image: linear-gradient(to right, transparent, black 12px, black 95%, transparent);
}
.cat-nav::-webkit-scrollbar { display: none; }
.cat-nav a {
  flex-shrink: 0; text-decoration: none; white-space: nowrap;
  font-size: 0.8rem; font-weight: 500; color: var(--color-text-muted);
  padding: 0.4rem 0.75rem; border-radius: var(--radius-full);
  border: 1px solid transparent;
  transition: background var(--transition-interactive), color var(--transition-interactive), border-color var(--transition-interactive);
}
.cat-nav a:hover { background: var(--color-surface-2); color: var(--color-text); }
.cat-nav a.active { background: var(--color-primary-highlight); color: var(--color-primary); border-color: color-mix(in oklab, var(--color-primary) 30%, transparent); font-weight: 700; }

.theme-toggle {
  flex-shrink: 0; width: 2.25rem; height: 2.25rem; border-radius: var(--radius-full);
  display: flex; align-items: center; justify-content: center;
  background: var(--color-surface-2); color: var(--color-text);
  border: 1px solid var(--color-border);
}
.theme-toggle:hover { background: var(--color-surface-offset); }

/* ============================================================
   Hero
   ============================================================ */
.hero { padding-block: clamp(2.5rem, 6vw, 4.5rem) clamp(2rem, 5vw, 3rem); }
.hero-inner { max-width: 880px; margin-inline: auto; padding-inline: 1.5rem; text-align: center; }
.eyebrow {
  font-size: 0.8rem; font-weight: 700; letter-spacing: 0.08em; color: var(--color-gold);
  text-transform: uppercase; margin-bottom: 0.9rem;
}
.hero h1 {
  font-size: clamp(1.9rem, 1.4rem + 2vw, 3rem); font-weight: 700; color: var(--color-text);
  margin-bottom: 1.1rem;
}
.hero-lede { font-size: clamp(1rem, 0.95rem + 0.3vw, 1.15rem); color: var(--color-text-muted); max-width: 62ch; margin-inline: auto; }
.mobile-break { display: none; }

.award-legend {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 0.6rem;
  margin-block: 2rem 1.25rem;
}
.award-legend li {
  display: flex; align-items: center; gap: 0.5rem;
  background: var(--color-surface); border: 1px solid var(--color-border);
  padding: 0.55rem 0.9rem; border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm); font-size: 0.82rem;
}
.award-legend .dot { width: 0.6rem; height: 0.6rem; border-radius: 50%; flex-shrink: 0; }
.award-legend strong { font-weight: 700; }
.award-legend span.age { color: var(--color-text-faint); font-size: 0.75rem; }

.hero-source { font-size: 0.85rem; color: var(--color-text-faint); }
.hero-source a { text-decoration: underline; text-underline-offset: 2px; }

/* ============================================================
   Controls bar
   ============================================================ */
.controls-bar {
  position: sticky; top: 3.4rem; z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-divider);
  padding: 0.85rem 1.5rem;
}
.controls-inner {
  max-width: 1180px; margin-inline: auto;
  display: flex; flex-wrap: wrap; gap: 0.85rem; align-items: center; justify-content: space-between;
}
.search-field {
  flex: 1 1 260px; max-width: 420px;
  display: flex; align-items: center; gap: 0.5rem;
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-full); padding: 0.5rem 0.9rem;
  color: var(--color-text-muted);
}
.search-field:focus-within { border-color: var(--color-primary); color: var(--color-text); }
.search-field input {
  border: none; outline: none; background: transparent; flex: 1;
  font-size: 0.88rem; color: var(--color-text);
}
.search-field input::placeholder { color: var(--color-text-faint); }
.search-clear {
  background: none; border: none; font-size: 1.1rem; line-height: 1; color: var(--color-text-faint); cursor: pointer;
  padding: 0.1rem 0.3rem;
}
.search-clear:hover { color: var(--color-text); }

.column-toggles { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.col-toggle {
  display: inline-flex; align-items: center; gap: 0.4rem; cursor: pointer; user-select: none;
  font-size: 0.78rem; font-weight: 500; padding: 0.4rem 0.7rem; border-radius: var(--radius-full);
  border: 1px solid var(--color-border); background: var(--color-surface); color: var(--color-text-muted);
  transition: background var(--transition-interactive), color var(--transition-interactive), border-color var(--transition-interactive), opacity var(--transition-interactive);
}
.col-toggle input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.col-toggle .dot { width: 0.55rem; height: 0.55rem; border-radius: 50%; flex-shrink: 0; }
.col-toggle[data-checked="true"] { color: var(--color-text); border-color: currentColor; }
.col-toggle[data-checked="false"] { opacity: 0.5; }
.col-toggle[data-checked="false"] .dot { filter: grayscale(0.6); }

.result-count { max-width: 1180px; margin: 0.6rem auto 0; padding-inline: 0; font-size: 0.78rem; color: var(--color-text-faint); }

/* ============================================================
   Eligibility
   ============================================================ */
.eligibility-section { padding-block: clamp(2rem, 4vw, 3rem) clamp(1.5rem, 3vw, 2rem); }
.section-inner { max-width: 1180px; margin-inline: auto; padding-inline: 1.5rem; }
.eligibility-section h2 {
  font-size: 1.05rem; font-weight: 700; color: var(--color-primary);
  margin-bottom: 1rem; display: flex; align-items: center; gap: 0.5rem;
}
.eligibility-section h2::before { content: ''; width: 4px; height: 1.1rem; background: var(--color-gold); border-radius: var(--radius-full); }
.eligibility-grid { display: grid; gap: 1rem; }
.elig-card {
  background: var(--color-surface-2); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 1.2rem 1.4rem;
}
.elig-card h3 { font-size: 0.95rem; margin-bottom: 0.8rem; color: var(--color-text); }
.elig-grid-cells { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 0.9rem; }
.elig-cell { font-size: 0.86rem; color: var(--color-text-muted); }
.elig-cell .cell-tag { margin-bottom: 0.35rem; }
.elig-cell .cell-body { color: var(--color-text); white-space: pre-line; }

/* ============================================================
   Category / Topic layout
   ============================================================ */
.categories-section { padding-bottom: 2rem; }
.category-block {
  padding-block: clamp(1.6rem, 3vw, 2.5rem);
  border-top: 1px solid var(--color-divider);
  scroll-margin-top: 6.5rem;
}
.category-block:first-child { border-top: none; }
.category-header { max-width: 1180px; margin-inline: auto; padding-inline: 1.5rem; margin-bottom: 1.4rem; }
.category-header h2 {
  font-size: clamp(1.15rem, 1.05rem + 0.4vw, 1.5rem); font-weight: 700; color: var(--color-text);
  display: flex; align-items: baseline; gap: 0.6rem;
}
.category-header .cat-index {
  font-family: var(--font-display); font-weight: 700; color: var(--color-primary);
  font-size: 1.05em;
}

.topic-list { max-width: 1180px; margin-inline: auto; padding-inline: 1.5rem; display: flex; flex-direction: column; gap: 1.4rem; }
.topic-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm);
}
.topic-card-head {
  padding: 1rem 1.35rem 0.85rem; border-bottom: 1px solid var(--color-divider);
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem 0.9rem;
}
.topic-card-head h3 { font-size: 1rem; font-weight: 700; color: var(--color-text); }
.topic-note {
  font-size: 0.74rem; color: var(--color-text-faint); background: var(--color-surface-2);
  border: 1px dashed var(--color-border); padding: 0.25rem 0.6rem; border-radius: var(--radius-full);
}

.row-grid { display: grid; }
.row-grid + .row-grid { border-top: 1px solid var(--color-divider); }
.grid-cell {
  padding: 1rem 1.35rem; border-inline-start: 1px solid var(--color-divider);
  font-size: 0.87rem; color: var(--color-text);
}
.grid-cell:first-child { border-inline-start: none; }
.grid-cell.is-empty { color: var(--color-text-faint); font-style: italic; }
.grid-cell .cell-tag {
  display: inline-flex; align-items: center; gap: 0.35rem;
  font-size: 0.7rem; font-weight: 700; padding: 0.15rem 0.55rem; border-radius: var(--radius-full);
  margin-bottom: 0.55rem;
}
.grid-cell .cell-tag .dot { width: 0.4rem; height: 0.4rem; border-radius: 50%; }
.grid-cell .cell-body p { margin: 0; }
.grid-cell .cell-body p.sub-bullet { color: var(--color-text-muted); font-size: 0.94em; padding-left: 0.9em; margin-top: 0.3em; }
.grid-cell .cell-body p + p { margin-top: 0.3em; }
.grid-cell mark { background: var(--color-gold-highlight); color: inherit; border-radius: 0.2em; padding: 0 0.1em; }

[data-award="disc"] .cell-tag { background: var(--award-disc-tint); color: var(--award-disc); }
[data-award="disc"] .dot { background: var(--award-disc); }
[data-award="std"] .cell-tag { background: var(--award-std-tint); color: var(--award-std); }
[data-award="std"] .dot { background: var(--award-std); }
[data-award="adv"] .cell-tag { background: var(--award-adv-tint); color: var(--award-adv); }
[data-award="adv"] .dot { background: var(--award-adv); }
[data-award="chief"] .cell-tag { background: var(--award-chief-tint); color: var(--award-chief); }
[data-award="chief"] .dot { background: var(--award-chief); }

.empty-state {
  max-width: 640px; margin: 3rem auto; text-align: center; color: var(--color-text-muted); padding-inline: 1.5rem;
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer { background: var(--color-surface-2); border-top: 1px solid var(--color-divider); padding-block: clamp(2rem, 4vw, 3rem); }
.footer-inner { max-width: 1180px; margin-inline: auto; padding-inline: 1.5rem; }
.footer-inner h2 { font-size: 0.95rem; font-weight: 700; color: var(--color-text); margin-bottom: 0.9rem; }
.footer-inner ol { list-style: none; display: flex; flex-direction: column; gap: 0.55rem; }
.footer-inner ol li {
  font-size: 0.82rem; color: var(--color-text-muted); padding-left: 1.4rem; position: relative;
}
.footer-inner ol li::before {
  content: counter(note); counter-increment: note;
  position: absolute; left: 0; top: 0; font-weight: 700; color: var(--color-gold);
}
.footer-inner ol { counter-reset: note; }
.footer-meta { margin-top: 1.2rem; font-size: 0.78rem; color: var(--color-text-faint); }
.footer-meta a { text-decoration: underline; text-underline-offset: 2px; }

/* ============================================================
   Responsive
   ============================================================ */
@media (min-width: 720px) {
  .mobile-break { display: none; }
  .elig-grid-cells { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 719px) {
  .header-inner { flex-wrap: wrap; }
  .cat-nav { order: 3; width: 100%; }
  .row-grid { grid-template-columns: 1fr !important; }
  .grid-cell { border-inline-start: none; border-top: 1px solid var(--color-divider); }
  .grid-cell:first-child { border-top: none; }
  .controls-inner { flex-direction: column; align-items: stretch; }
  .search-field { flex: none; width: 100%; max-width: none; }
  .column-toggles { justify-content: center; }
}

@media (max-width: 480px) {
  .header-inner { padding-block: 0.6rem; }
  .brand-text em { display: none; }
}

/* print */
@media print {
  .site-header, .controls-bar, .theme-toggle { position: static; }
}