/* style.css — 臺灣公民科技生態系與需求調查報告 展示網頁
 * 零外部字型／CDN；深色模式跟隨系統設定。
 */

:root {
  --primary: #2a78d6;
  --accent: #eb6834;
  --neutral: #8a8a85;
  --grid: #e4e4e0;
  --bg: #f6f8fb;
  --surface: #ffffff;
  --text: #182437;
  --text-dim: #5b6a7e;
  --border: #e0e6ee;
  --link: #1b5296;
  --max-w: 760px;
  --layer-never: #1baf7a;
  --layer-aware: #eb6834;
  --layer-done: #2a78d6;
  --insight-bg: #eaf1fb;
  --insight-border: #a9c8ec;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17171a;
    --surface: #1f2024;
    --text: #ececea;
    --text-dim: #b8b8b4;
    --border: #34353a;
    --link: #7fb0e8;
    --insight-bg: #1d2a3d;
    --insight-border: #2f4864;
  }
}
:root[data-theme="dark"] {
  --bg: #17171a;
  --surface: #1f2024;
  --text: #ececea;
  --text-dim: #b8b8b4;
  --border: #34353a;
  --link: #7fb0e8;
  --insight-bg: #1d2a3d;
  --insight-border: #2f4864;
}
:root[data-theme="light"] {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --text: #182437;
  --text-dim: #5b6a7e;
  --border: #e0e6ee;
  --insight-bg: #eaf1fb;
  --insight-border: #a9c8ec;
  --link: #1b5296;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang TC", "Heiti TC",
    "Microsoft JhengHei", "Noto Sans TC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
}

a { color: var(--link); }

.layout {
  display: flex;
  max-width: 1200px;
  margin: 0 auto;
}

/* -------------------------------------------------- 側邊導覽 */
.sidebar {
  width: 260px;
  flex-shrink: 0;
  padding: 24px 16px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  border-right: 1px solid var(--border);
}

.sidebar h2 {
  font-size: 13px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 20px 0 8px;
}
.sidebar h2:first-child { margin-top: 0; }

.sidebar nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.sidebar nav a {
  display: block;
  padding: 5px 8px;
  border-radius: 6px;
  font-size: 13.5px;
  color: var(--text-dim);
  text-decoration: none;
  border-left: 2px solid transparent;
}
.sidebar nav .sub a { padding-left: 20px; font-size: 13px; }
.sidebar nav a:hover { background: var(--border); }
.sidebar nav a.active {
  color: var(--primary);
  font-weight: 700;
  border-left-color: var(--primary);
  background: color-mix(in srgb, var(--primary) 10%, transparent);
}

.progress-track {
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  margin: 12px 0 4px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: var(--primary);
  width: 0%;
  transition: width 0.15s ease-out;
}

/* -------------------------------------------------- 深色／淺色切換 */
.theme-toggle {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 55;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 2px 10px rgba(0,0,0,0.14);
}
.theme-toggle:hover { filter: brightness(0.97); }

/* -------------------------------------------------- 手機導覽 */
.mobile-nav-toggle {
  display: none;
  position: fixed;
  bottom: 18px;
  right: 18px;
  z-index: 50;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 12px 18px;
  font-size: 14px;
  box-shadow: 0 3px 10px rgba(0,0,0,0.25);
}

@media (max-width: 880px) {
  .sidebar {
    position: fixed;
    left: 0; top: 0;
    width: min(300px, 84vw);
    background: var(--surface);
    z-index: 60;
    transform: translateX(-105%);
    transition: transform 0.2s ease;
    box-shadow: 2px 0 14px rgba(0,0,0,0.2);
  }
  .sidebar.open { transform: translateX(0); }
  .mobile-nav-toggle { display: block; }
  .sidebar-overlay {
    display: none;
    position: fixed; inset: 0; background: rgba(0,0,0,0.35); z-index: 55;
  }
  .sidebar-overlay.open { display: block; }
}

/* -------------------------------------------------- 主內容 */
main {
  flex: 1;
  min-width: 0;
  padding: 40px 24px 100px;
}

.content {
  max-width: var(--max-w);
  margin: 0 auto;
}

h1.report-title { font-size: 26px; line-height: 1.4; margin-bottom: 4px; }
.meta-line { color: var(--text-dim); font-size: 14px; margin: 4px 0; }

/* 封面：要像一張浮起來、跟後面內容分開的卡片，且第一屏要看得到「這份報告在講什麼」，
   插畫是輔助，不能佔掉太多高度。 */
.cover {
  background: var(--insight-bg);
  border: 1px solid var(--insight-border);
  border-radius: 16px;
  padding: 26px 26px 18px;
  margin-bottom: 12px;
  box-shadow: 0 10px 30px rgba(20, 60, 110, 0.10);
}
.cover-main {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.cover-text { flex: 1 1 340px; min-width: 240px; }
.cover-eyebrow {
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.05em;
  margin: 0 0 6px;
}
.cover-eyebrow a { color: inherit; }
.cover-hook {
  font-size: 15.5px;
  color: var(--text-dim);
  line-height: 1.55;
  margin: 4px 0 14px;
}
.cover-hook strong { color: var(--text); }
.cover-illo { flex: 0 0 130px; display: flex; justify-content: center; }
.cover-illo svg { width: 100%; max-width: 130px; height: auto; }
.cover-stats {
  display: flex;
  gap: 22px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--insight-border);
  flex-wrap: wrap;
}
.cover-stats .stat b {
  display: block;
  font-size: 22px;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
}
.cover-stats .stat span { font-size: 12.5px; color: var(--text-dim); }

@media (max-width: 560px) {
  .cover-main { flex-direction: column-reverse; }
}

.download-row { margin: 14px 0 4px; display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.download-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  background: var(--primary);
  padding: 8px 16px;
  border-radius: 8px;
  text-decoration: none;
}
.download-link:hover { filter: brightness(1.08); }
.download-note { font-size: 12.5px; color: var(--text-dim); margin-left: 8px; }
.btn-ghost {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  background: transparent;
  border: 1.5px solid var(--border);
  padding: 7px 15px;
  border-radius: 8px;
  text-decoration: none;
}
.btn-ghost:hover { background: var(--surface); }

section.chapter { margin-top: 56px; padding-top: 8px; scroll-margin-top: 16px; }

/* 標題階層，字級由大到小：
   h2.part-title（壹／貳／參／肆／伍，全篇最高階）
   > section.chapter > h2 一般型（一／二／三…／各章小節）
   > h3（1.1／2.1…）
   > h4（次要說明文字） */
section.chapter > h2.part-title {
  font-size: 25px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 0.02em;
  border-bottom: 3px solid var(--primary);
  padding-bottom: 10px;
  margin: 0 0 20px;
}
section.chapter > h2:not(.part-title) {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
  margin-bottom: 18px;
}
h3 { font-size: 18px; font-weight: 700; color: var(--text); margin-top: 34px; }
h4 { font-size: 15.5px; font-weight: 700; color: var(--text-dim); margin-top: 24px; }

p { margin: 14px 0; }

.lede {
  font-size: 15px;
  color: var(--text-dim);
  background: color-mix(in srgb, var(--primary) 6%, transparent);
  border-left: 3px solid var(--primary);
  padding: 10px 14px;
  border-radius: 0 8px 8px 0;
}

/* 重點卡：每小節開頭的一句話重點，掃過卡片＋圖表就能抓到結論。
   要跟前後文一眼區分開，所以底色、左側色條、陰影都比一般引言區塊（.lede）更重。 */
.insight-card {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin: 20px 0 24px;
  padding: 16px 18px;
  background: var(--insight-bg);
  border: 1px solid var(--insight-border);
  border-left: 5px solid var(--primary);
  border-radius: 4px 14px 14px 4px;
  box-shadow: 0 2px 8px rgba(20, 60, 110, 0.08);
}
.insight-icon {
  font-size: 28px;
  line-height: 1.3;
  flex-shrink: 0;
}
.insight-body { min-width: 0; }
.insight-label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--primary);
  margin-bottom: 4px;
}
.insight-text {
  margin: 0;
  font-size: 17.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--text);
}

/* 完整說明收合：預設收起，想深讀的人自己展開 */
details.full-explanation {
  margin: 4px 0 20px;
}
details.full-explanation > summary {
  cursor: pointer;
  font-size: 13.5px;
  color: var(--link);
  padding: 6px 0;
  list-style: none;
}
details.full-explanation > summary::-webkit-details-marker { display: none; }
details.full-explanation > summary::before {
  content: "▸ ";
}
details.full-explanation[open] > summary::before {
  content: "▾ ";
}
details.full-explanation > summary:hover { text-decoration: underline; }
details.full-explanation .full-explanation-body {
  padding-top: 6px;
}

.finding-list { padding-left: 0; list-style: none; }
.finding-list > li {
  margin: 14px 0;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
}
.finding-list > li > strong { display: block; margin-bottom: 4px; font-size: 15.5px; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 13.5px;
}
caption { caption-side: top; text-align: left; color: var(--text-dim); font-size: 13px; margin-bottom: 6px; }
th, td {
  border: 1px solid var(--border);
  padding: 7px 10px;
  text-align: left;
}
th { background: color-mix(in srgb, var(--primary) 8%, transparent); }
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* -------------------------------------------------- 圖表容器 */
.chart-block {
  margin: 22px 0 30px;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 14px 10px;
  background: var(--surface);
}
.chart-block h4.chart-title { margin: 0 0 2px; font-size: 15px; color: var(--text); }
.chart-block .chart-subtitle {
  font-size: 12.5px;
  color: var(--text-dim);
  white-space: pre-line;
  margin-bottom: 10px;
}
[data-chart] svg { display: block; width: 100%; height: auto; }
[data-chart] text { fill: var(--text); }
.chart-note { font-size: 11.5px; color: var(--text-dim); margin-top: 4px; }

.chart-tip {
  position: fixed;
  z-index: 200;
  background: #1c1c1a;
  color: #fff;
  font-size: 12.5px;
  padding: 6px 10px;
  border-radius: 6px;
  max-width: 240px;
  pointer-events: none;
  line-height: 1.5;
  box-shadow: 0 3px 10px rgba(0,0,0,0.3);
}

/* 分群切換按鈕 */
.layer-toggle {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}
.layer-toggle-btn {
  font-size: 12.5px;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text-dim);
  cursor: pointer;
}
.layer-toggle-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  font-weight: 600;
}

/* 數據表折疊 */
details.data-table-toggle {
  margin-top: 8px;
}
details.data-table-toggle summary {
  cursor: pointer;
  font-size: 12.5px;
  color: var(--link);
}

/* -------------------------------------------------- 身分推薦 */
.persona-picker {
  margin: 22px 0 36px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
}
.persona-picker h3 { margin-top: 0; }
.persona-buttons { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.persona-btn {
  flex: 1 1 160px;
  font-size: 13.5px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
  text-align: left;
}
.persona-btn.active { border-color: var(--primary); background: color-mix(in srgb, var(--primary) 12%, transparent); }
.persona-result { font-size: 14px; margin-top: 10px; }
.persona-result a { font-weight: 600; }
.persona-why { color: var(--text-dim); font-size: 13px; margin: 0 0 8px; }

/* -------------------------------------------------- 限制卡片 */
.limits-box {
  border: 1px solid var(--accent);
  border-radius: 10px;
  padding: 14px 16px;
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  font-size: 14px;
}
.limits-box li { margin: 6px 0; }

footer {
  max-width: var(--max-w);
  margin: 60px auto 0;
  padding: 20px 0 60px;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 13px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--primary);
  color: #fff;
  padding: 8px 14px;
  z-index: 999;
}
.skip-link:focus { left: 8px; top: 8px; }

@media (max-width: 480px) {
  main { padding: 28px 14px 90px; }
  h1.report-title { font-size: 21px; }
  section.chapter > h2.part-title { font-size: 20px; }
  section.chapter > h2:not(.part-title) { font-size: 18px; }
  body { font-size: 15.5px; }
}