/* ============================================================
   Title:  心理測驗課程網站樣式（墨藍＋赭紅，「測」浮水印，深淺色三段切換）
   File:   assets/course.css
   Author: HTYu (built with Claude)
   Date:   2026-09-17
   ============================================================
   與 LDA-course 同一套字體堆疊與版面語彙（頂列、卡片格線、週次表格），
   但配色改為本課專屬：墨藍 chrome、赭紅 accent，與每週投影片同一套。
   深淺色由 <html data-mode="auto|light|dark"> 控制：auto 跟隨系統，
   light／dark 為使用者在頂列按鈕手動指定（記在 localStorage）。
   ============================================================ */

/* ---------- tokens ---------- */
:root {
  --sans:  "Noto Sans TC", "Noto Sans CJK TC", "Helvetica Neue", Helvetica, Arial,
           "PingFang TC", "Microsoft JhengHei", "微軟正黑體", sans-serif;
  --serif: "Noto Serif TC", "Noto Serif CJK TC", "Palatino Linotype", "Book Antiqua",
           Palatino, "Songti TC", "PMingLiU", "新細明體", serif;
  --mono:  "SFMono-Regular", Menlo, Consolas, "DejaVu Sans Mono", "Noto Sans Mono CJK TC", monospace;

  --radius: 10px;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, .06);
  --shadow-md: 0 6px 18px rgba(16, 24, 40, .09);
  --topbar-h: 60px;

  /* 淺色（預設） */
  --ink:        #1C2333;
  --ink-soft:   #3A4358;
  --ink-faint:  #6B7385;
  --page:       #FBFAF7;
  --surface:    #F3F2EE;
  --surface-2:  #EAE8E2;
  --rule:       #DEDBD3;
  --rule-strong:#B9B4A8;

  --chrome:     #1F2A44;   /* 墨藍 */
  --chrome-2:   #2A3757;
  --chrome-3:   #38476C;
  --chrome-ink: #EEF1F7;
  --chrome-soft:#B7C0D6;
  --chrome-rule:#2E3B5C;

  --accent:     #C8553D;   /* 赭紅 */
  --accent-ink: #FFFFFF;
  --accent-soft:#F6E7E1;
  --link:       #A5432E;
  --navy-tint:  #EEF1F7;
  --sand:       #E9DFCF;

  --ok:   #2F7D5B;
  --bad:  #B23A48;
  --wm-opacity: .045;
}

/* 深色：系統偏好且 auto，或手動 dark */
@media (prefers-color-scheme: dark) {
  :root[data-mode="auto"] { --_dark: 1; }
}
:root[data-mode="dark"] { --_dark: 1; }

@media (prefers-color-scheme: dark) {
  :root[data-mode="auto"],
  :root[data-mode="dark"] {
    --ink: #E8EAEF; --ink-soft: #BFC5D2; --ink-faint: #8E96A8;
    --page: #14171E; --surface: #1B1F28; --surface-2: #232835;
    --rule: #2F3542; --rule-strong: #4A5265;
    --chrome: #10151F; --chrome-2: #1A2130; --chrome-3: #26304A;
    --chrome-rule: #222A3B;
    --accent: #E4785E; --accent-ink: #1A0E0A; --accent-soft: #3A2620;
    --link: #F0A48A; --navy-tint: #1F2637; --sand: #3A3428;
    --ok: #5CC392; --bad: #E27886;
    --wm-opacity: .06;
  }
}
:root[data-mode="dark"] {
  --ink: #E8EAEF; --ink-soft: #BFC5D2; --ink-faint: #8E96A8;
  --page: #14171E; --surface: #1B1F28; --surface-2: #232835;
  --rule: #2F3542; --rule-strong: #4A5265;
  --chrome: #10151F; --chrome-2: #1A2130; --chrome-3: #26304A;
  --chrome-rule: #222A3B;
  --accent: #E4785E; --accent-ink: #1A0E0A; --accent-soft: #3A2620;
  --link: #F0A48A; --navy-tint: #1F2637; --sand: #3A3428;
  --ok: #5CC392; --bad: #E27886;
  --wm-opacity: .06;
}

/* ---------- 基礎 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: calc(var(--topbar-h) + 12px); }
body {
  margin: 0; font-family: var(--sans); font-size: 16px; line-height: 1.75;
  color: var(--ink); background: var(--page); padding-top: var(--topbar-h);
  min-height: 100vh; position: relative;
}
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { font-family: var(--serif); line-height: 1.35; margin: 0 0 .5em; }
h1 { font-size: 1.75rem; }
h2 { font-size: 1.3rem; margin-top: 2.2rem; padding-bottom: .35rem; border-bottom: 2px solid var(--rule-strong); }
h3 { font-size: 1.08rem; margin-top: 1.6rem; color: var(--accent); }
p { margin: 0 0 1em; }
ul, ol { margin: 0 0 1em; padding-left: 1.5em; }
li { margin-bottom: .35em; }
code, kbd { font-family: var(--mono); font-size: .875em; background: var(--surface-2); padding: .1em .35em; border-radius: 4px; }
hr { border: 0; border-top: 1px solid var(--rule); margin: 2rem 0; }

.skip-link { position: absolute; left: -9999px; top: 0; z-index: 200; background: var(--accent); color: var(--accent-ink); padding: .6rem 1rem; border-radius: 0 0 var(--radius) 0; }
.skip-link:focus { left: 0; }

/* ---------- 「測」浮水印 ---------- */
.watermark {
  position: fixed; right: -2vw; bottom: -6vh; z-index: 0; pointer-events: none; user-select: none;
  font-family: var(--serif); font-weight: 700; font-size: clamp(14rem, 42vh, 30rem); line-height: 1;
  color: var(--chrome); opacity: var(--wm-opacity);
}
:root[data-mode="dark"] .watermark { color: #FFFFFF; }
@media (prefers-color-scheme: dark) { :root[data-mode="auto"] .watermark { color: #FFFFFF; } }
main, .site-foot { position: relative; z-index: 1; }
@media print { .watermark { display: none; } }

/* ---------- 頂列 ---------- */
.topbar {
  position: fixed; inset: 0 0 auto 0; z-index: 100; height: var(--topbar-h);
  display: flex; align-items: center; gap: 1rem;
  padding: 0 clamp(.75rem, 3vw, 1.5rem); padding-top: env(safe-area-inset-top, 0px);
  background: var(--chrome); border-bottom: 1px solid var(--chrome-rule); color: var(--chrome-ink);
}
.brand { display: flex; align-items: center; gap: .6rem; color: var(--chrome-ink); flex: none; }
.brand:hover { text-decoration: none; }
.brand .mark {
  width: 32px; height: 32px; border-radius: 8px; background: var(--accent); color: #fff;
  display: grid; place-items: center; font-family: var(--serif); font-weight: 700; font-size: 1.15rem; flex: none;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-title { font-family: var(--serif); font-size: 1.1rem; font-weight: 700; letter-spacing: .02em; }
.brand-sub { font-size: .74rem; color: var(--chrome-soft); }

.topbar-links { display: flex; gap: .1rem; margin-left: auto; flex-wrap: wrap; justify-content: flex-end; }
.topbar-links a { color: var(--chrome-soft); font-size: .86rem; padding: .32rem .55rem; border-radius: 6px; white-space: nowrap; }
.topbar-links a:hover { color: var(--chrome-ink); background: var(--chrome-2); text-decoration: none; }
.topbar-links a[aria-current="page"] { color: var(--accent); background: var(--chrome-2); }
.topbar-links a.lock::before { content: "🔒 "; font-size: .8em; }

.mode-picker { display: flex; gap: .15rem; flex: none; background: var(--chrome-2); border-radius: 999px; padding: .15rem; }
.mode-picker button {
  border: 0; background: transparent; color: var(--chrome-soft); cursor: pointer;
  font-size: .78rem; padding: .2rem .55rem; border-radius: 999px; font-family: var(--sans);
}
.mode-picker button[aria-pressed="true"] { background: var(--accent); color: var(--accent-ink); }
.mode-picker button:hover { color: var(--chrome-ink); }

@media (max-width: 860px) {
  .brand-sub { display: none; }
  .topbar-links a { padding: .28rem .4rem; font-size: .8rem; }
}
@media (max-width: 640px) {
  .topbar { height: auto; flex-wrap: wrap; padding-bottom: .4rem; row-gap: .3rem; }
  body { padding-top: 104px; }
  .topbar-links { margin-left: 0; width: 100%; justify-content: flex-start; }
}

/* ---------- 版面 ---------- */
.wrap { max-width: 62rem; margin: 0 auto; padding: 2rem clamp(1rem, 4vw, 2rem) 4rem; padding-bottom: calc(4rem + env(safe-area-inset-bottom, 0px)); }
.lede { font-size: 1.04rem; color: var(--ink-soft); max-width: 46rem; }
.page-head { margin-bottom: 1.5rem; }
.page-head h1 { margin-bottom: .3rem; }
.eyebrow { font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-faint); margin: 0 0 .4rem; }

/* ---------- 首頁 hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, var(--chrome) 0%, var(--chrome-3) 100%);
  color: var(--chrome-ink); border-radius: var(--radius);
  padding: clamp(1.5rem, 5vw, 2.75rem); margin-bottom: 2rem;
}
.hero::after {
  content: "測"; position: absolute; right: -.1em; bottom: -.32em; font-family: var(--serif); font-weight: 700;
  font-size: 13rem; line-height: 1; color: #fff; opacity: .07; pointer-events: none;
}
.hero > * { position: relative; z-index: 1; }
.hero h1 { color: #fff; margin-bottom: .35rem; font-size: clamp(1.5rem, 4.5vw, 2.1rem); }
.hero .hero-sub { color: var(--chrome-soft); margin-bottom: .2rem; }
.hero .hero-meta { color: var(--chrome-soft); font-size: .9rem; margin-bottom: 1.25rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .6rem; }
.btn { display: inline-block; padding: .55rem 1.1rem; border-radius: 6px; font-size: .92rem; font-weight: 500; border: 1px solid transparent; cursor: pointer; font-family: var(--sans); }
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost { border-color: var(--chrome-soft); color: var(--chrome-ink); }
.btn-ghost:hover { background: rgba(255,255,255,.1); }
.btn-outline { border-color: var(--rule-strong); color: var(--ink); background: var(--surface); }

/* ---------- 卡片 ---------- */
.cards { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(min(100%, 15rem), 1fr)); margin: 1.25rem 0 2rem; padding: 0; list-style: none; }
.card {
  display: block; padding: 1.1rem 1.2rem; background: var(--surface); border: 1px solid var(--rule);
  border-radius: var(--radius); box-shadow: var(--shadow-sm); color: inherit;
}
a.card:hover { text-decoration: none; box-shadow: var(--shadow-md); border-color: var(--accent); }
.card h3 { margin: 0 0 .3rem; font-family: var(--sans); font-size: 1rem; font-weight: 700; color: var(--ink); }
.card p { margin: 0; font-size: .88rem; color: var(--ink-soft); line-height: 1.6; }
.card .kicker { font-size: .74rem; color: var(--accent); font-weight: 700; letter-spacing: .06em; margin-bottom: .2rem; }

/* 週次卡（首頁與進度頁） */
.weeks-grid { display: grid; gap: .8rem; grid-template-columns: repeat(auto-fill, minmax(min(100%, 13rem), 1fr)); margin: 1rem 0 2rem; padding: 0; list-style: none; }
.wk-card { position: relative; display: block; padding: .9rem 1rem .9rem 1rem; background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); color: inherit; box-shadow: var(--shadow-sm); }
.wk-card:hover { text-decoration: none; box-shadow: var(--shadow-md); border-color: var(--accent); }
.wk-card .no { font-family: var(--mono); font-size: .76rem; color: var(--ink-faint); }
.wk-card .no b { color: var(--accent); font-size: .95rem; }
.wk-card .t { display: block; font-weight: 700; margin: .15rem 0 .2rem; font-size: .96rem; line-height: 1.4; }
.wk-card .s { display: block; font-size: .8rem; color: var(--ink-soft); }
.wk-card.is-exam { background: var(--navy-tint); }
.wk-card.is-current { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }
.wk-card.is-past { opacity: .82; }

/* ---------- 公告 ---------- */
.notices { list-style: none; padding: 0; margin: 0 0 2rem; }
.notices li { display: flex; gap: .9rem; align-items: baseline; padding: .6rem .9rem; background: var(--surface); border: 1px solid var(--rule); border-radius: 6px; margin-bottom: .5rem; }
.notices time { font-family: var(--mono); font-size: .8rem; color: var(--accent); flex: none; font-weight: 700; }

/* ---------- 表格 ---------- */
.table-scroll { overflow-x: auto; margin: 1rem 0 2rem; }
table.grid { border-collapse: collapse; width: 100%; min-width: 34rem; font-size: .92rem; }
table.grid th, table.grid td { padding: .6rem .7rem; text-align: left; vertical-align: top; border-bottom: 1px solid var(--rule); }
table.grid thead th { border-bottom: 2px solid var(--rule-strong); border-top: 2px solid var(--rule-strong); font-size: .82rem; letter-spacing: .04em; color: var(--ink-soft); white-space: nowrap; }
table.grid tbody tr:hover { background: var(--surface); }
table.grid td.wk { font-family: var(--mono); white-space: nowrap; color: var(--ink-faint); }
table.grid tr.is-current td { background: color-mix(in srgb, var(--accent) 12%, var(--page)); }
table.grid tr.is-current td.wk { color: var(--ink); font-weight: 700; }
table.grid tr.is-exam td { background: var(--navy-tint); }
table.grid tr.is-exam td.wk { font-weight: 700; color: var(--ink-soft); }

/* ---------- 檔案清單與標籤 ---------- */
.files { list-style: none; padding: 0; margin: .4rem 0 0; }
.files li { margin: 0 0 .35rem; font-size: .92rem; }
.files a::before, .files .pending::before, .files .plain::before {
  content: ""; display: inline-block; width: .85em; height: .85em; margin-right: .45em; vertical-align: -.05em;
  background: currentColor; opacity: .55; -webkit-mask: var(--icon) center / contain no-repeat; mask: var(--icon) center / contain no-repeat;
}
.f-pdf  { --icon: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><path d="M9 1H4a1 1 0 0 0-1 1v12a1 1 0 0 0 1 1h8a1 1 0 0 0 1-1V5L9 1Zm0 1.5L11.5 5H9V2.5Z"/></svg>'); }
.f-data { --icon: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><path d="M8 1c3 0 5 .9 5 2v10c0 1.1-2 2-5 2s-5-.9-5-2V3c0-1.1 2-2 5-2Zm0 1c-2.4 0-4 .6-4 1s1.6 1 4 1 4-.6 4-1-1.6-1-4-1Z"/></svg>'); }
.f-code { --icon: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><path d="M5.5 3.5 1 8l4.5 4.5 1-1L3.5 8l3-3.5-1-1Zm5 0-1 1 3 3.5-3 3.5 1 1L15 8l-4.5-4.5Z"/></svg>'); }
.f-doc  { --icon: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><path d="M3 1h7l3 3v11H3V1Zm2 5h6v1H5V6Zm0 3h6v1H5V9Zm0 3h4v1H5v-1Z"/></svg>'); }
.f-link { --icon: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><path d="M6.5 9.5a3 3 0 0 0 4.2 0l2-2a3 3 0 1 0-4.2-4.2l-1 1 1 1 1-1a1.6 1.6 0 1 1 2.2 2.2l-2 2a1.6 1.6 0 0 1-2.2 0l-1 1Zm3-3a3 3 0 0 0-4.2 0l-2 2a3 3 0 1 0 4.2 4.2l1-1-1-1-1 1a1.6 1.6 0 1 1-2.2-2.2l2-2a1.6 1.6 0 0 1 2.2 0l1-1Z"/></svg>'); }
.f-lock { --icon: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><path d="M4 7V5a4 4 0 1 1 8 0v2h1v8H3V7h1Zm2 0h4V5a2 2 0 1 0-4 0v2Z"/></svg>'); }
.pending { color: var(--ink-faint); }
.tag { display: inline-block; font-size: .72rem; line-height: 1.6; padding: 0 .45em; border-radius: 4px; background: var(--surface-2); color: var(--ink-faint); border: 1px solid var(--rule); vertical-align: .08em; white-space: nowrap; margin-left: .3rem; }
.tag-soon { background: color-mix(in srgb, var(--accent) 14%, var(--page)); color: var(--accent); border-color: transparent; }
.tag-lock { background: var(--navy-tint); color: var(--ink-soft); border-color: transparent; }
.tag-ch   { background: color-mix(in srgb, var(--chrome-3) 14%, var(--page)); color: var(--ink-soft); border-color: transparent; }
.tag-hw   { background: color-mix(in srgb, var(--ok) 14%, var(--page)); color: var(--ok); border-color: transparent; }

/* ---------- 提示方塊 ---------- */
.note { border: 1px solid var(--rule); border-radius: var(--radius); background: var(--surface); padding: 1rem 1.2rem; margin: 1.25rem 0; }
.note.accent { background: var(--accent-soft); border-color: transparent; }
.note.warn { border-color: var(--bad); }
.note > :last-child { margin-bottom: 0; }
.note-title { font-weight: 700; font-size: .92rem; margin: 0 0 .4rem; }

/* ---------- 週次詳細頁 ---------- */
.week-head { display: grid; gap: 1rem; grid-template-columns: 1fr; margin-bottom: 1.5rem; }
.week-block { margin-bottom: 1.75rem; }
.week-block h3 { margin-top: 0; }
ol.plan { list-style: none; counter-reset: seg; padding-left: 0; margin: .6rem 0 0; }
ol.plan li { counter-increment: seg; position: relative; padding: .7rem .9rem .7rem 2.6rem; margin-bottom: .5rem; background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); font-size: .93rem; line-height: 1.7; }
ol.plan li::before { content: counter(seg); position: absolute; left: .85rem; top: .72rem; width: 1.35em; height: 1.35em; line-height: 1.35em; text-align: center; border-radius: 50%; background: var(--accent); color: var(--accent-ink); font-family: var(--mono); font-size: .78rem; font-weight: 700; }
.goals { padding-left: 1.3em; }
.goals li { margin-bottom: .3em; }
.two-col { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr)); }
.week-nav { display: flex; justify-content: space-between; gap: 1rem; margin: 2.5rem 0 0; padding-top: 1rem; border-top: 1px solid var(--rule); font-size: .9rem; }
.strip { display: flex; gap: .3rem; flex-wrap: wrap; margin: .6rem 0 1.2rem; }
.strip a { display: inline-grid; place-items: center; width: 2.1rem; height: 2.1rem; border-radius: 6px; background: var(--surface); border: 1px solid var(--rule); font-family: var(--mono); font-size: .8rem; color: var(--ink-soft); }
.strip a:hover { text-decoration: none; border-color: var(--accent); }
.strip a.cur { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 700; }
.strip a.exam { background: var(--chrome); color: var(--chrome-ink); border-color: var(--chrome); }

/* ---------- 密碼區 ---------- */
.lockbox { max-width: 28rem; margin: 3rem auto; padding: 1.6rem; background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); box-shadow: var(--shadow-md); }
.lockbox input[type=password] { width: 100%; font-size: 1.05rem; padding: .6rem .8rem; border: 1px solid var(--rule-strong); border-radius: 6px; background: var(--page); color: var(--ink); font-family: var(--sans); }
.lockbox label { display: block; font-size: .9rem; margin: .8rem 0 .3rem; }
.lockbox .row { display: flex; gap: .6rem; align-items: center; margin-top: .9rem; flex-wrap: wrap; }
.lockbox .err { color: var(--bad); font-size: .88rem; margin-top: .6rem; min-height: 1.2em; }
.pdf-frame { width: 100%; height: min(78vh, 900px); border: 1px solid var(--rule); border-radius: var(--radius); background: var(--surface-2); }
.toolbar { display: flex; gap: .6rem; align-items: center; flex-wrap: wrap; margin: .6rem 0 1rem; font-size: .9rem; }
.md-body h1 { font-size: 1.5rem; } .md-body h2 { font-size: 1.2rem; } .md-body h3 { font-size: 1.05rem; }
.md-body table { border-collapse: collapse; width: 100%; font-size: .92rem; margin: 1rem 0; }
.md-body th, .md-body td { border-bottom: 1px solid var(--rule); padding: .45rem .6rem; text-align: left; vertical-align: top; }
.md-body pre { background: var(--surface-2); padding: .8rem 1rem; border-radius: 6px; overflow-x: auto; font-size: .85rem; }
.md-body blockquote { border-left: 3px solid var(--accent); margin: 1rem 0; padding: .2rem 1rem; color: var(--ink-soft); }

/* ---------- 頁尾 ---------- */
.site-foot { border-top: 1px solid var(--rule); margin-top: 3rem; padding: 1.5rem clamp(1rem, 4vw, 2rem) 2.5rem; padding-bottom: calc(2.5rem + env(safe-area-inset-bottom, 0px)); font-size: .85rem; color: var(--ink-faint); }
.site-foot .inner { max-width: 62rem; margin: 0 auto; }
.site-foot p { margin: 0 0 .25rem; }

/* ---------- 檢查頁 ---------- */
.chk-ok { color: var(--ok); font-weight: 700; } .chk-bad { color: var(--bad); font-weight: 700; } .chk-skip { color: var(--ink-faint); }

@media print { .topbar, .mode-picker, .week-nav, .strip { display: none !important; } body { padding-top: 0; } }