/* style.css — 費曼學習森林 (Feynman Forest)
   設計語彙：米紙底 + 松綠主字 + 橙色 CTA（書站系列色系） */
:root {
  --paper: #f7f8f1;
  --white: #fffef9;
  --pine: #173f35;
  --pine-mid: #336153;
  --pine-muted: #64736a;
  --line: #dce2d7;
  --orange: #f5ad77;
  --orange-hover: #f4bc92;
  --serif: 'Noto Serif TC', 'Songti TC', 'PMingLiU', serif;
  --sans: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius: 16px;
  --shadow: 0 1px 3px rgba(23,63,53,.08), 0 8px 24px rgba(23,63,53,.06);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--pine);
  font-family: var(--sans);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
h1,h2,h3,h4 { font-family: var(--serif); line-height: 1.4; margin: 0 0 .4em; }
a { color: var(--pine-mid); }
button { font-family: inherit; cursor: pointer; }

/* 跳到內容 */
.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--pine); color: var(--paper);
  padding: 10px 16px; border-radius: 0 0 10px 0; z-index: 200;
}
.skip-link:focus { left: 0; }

/* ── Header ── */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(247,248,241,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.brand-row {
  max-width: 1080px; margin: 0 auto;
  padding: 14px 20px 4px;
  display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap;
}
.brand-name { font-family: var(--serif); font-size: 1.35rem; font-weight: 700; margin: 0; }
.brand-slogan { font-size: .85rem; color: var(--pine-muted); }
nav.main-nav {
  max-width: 1080px; margin: 0 auto; padding: 6px 12px 10px;
  display: flex; gap: 4px; flex-wrap: wrap;
}
nav.main-nav a {
  text-decoration: none; color: var(--pine-mid);
  padding: 6px 14px; border-radius: 999px; font-size: .92rem;
  transition: background .15s, color .15s;
}
nav.main-nav a:hover { background: rgba(23,63,53,.06); }
nav.main-nav a[aria-current="page"] {
  background: var(--pine); color: var(--paper);
}

main { max-width: 1080px; margin: 0 auto; padding: 24px 20px 60px; }
main:focus { outline: none; }
section.view { animation: fadeIn .25s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px);} to { opacity: 1; transform: none;} }

/* ── Hero ── */
.hero {
  text-align: center; padding: 40px 8px 32px;
}
.hero h1 { font-size: clamp(1.9rem, 5vw, 2.8rem); margin-bottom: 8px; }
.hero .hero-sub { color: var(--pine-muted); max-width: 640px; margin: 0 auto 22px; }
.hero-quote {
  font-family: var(--serif); font-style: normal;
  background: var(--white); border-left: 4px solid var(--orange);
  border-radius: 0 14px 14px 0; box-shadow: var(--shadow);
  max-width: 640px; margin: 0 auto 26px; padding: 16px 22px;
}
.hero-quote .q-src { display: block; margin-top: 8px; font-size: .82rem; color: var(--pine-muted); }

.btn {
  display: inline-block; border: 0; border-radius: 999px;
  background: var(--orange); color: #fff;
  font-size: 1rem; font-weight: 600; padding: 12px 26px;
  transition: background .15s, transform .1s;
}
.btn:hover { background: var(--orange-hover); }
.btn:active { transform: scale(.97); }
.btn.ghost { background: transparent; color: var(--pine); border: 1.5px solid var(--line); }
.btn.ghost:hover { background: rgba(23,63,53,.05); }
.btn.small { padding: 7px 14px; font-size: .86rem; }

/* ── 卡片網格 ── */
.card {
  background: var(--white); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 20px;
}
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
@media (max-width: 780px) { .grid-3 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .grid-3, .grid-2 { grid-template-columns: 1fr; } }

.role-card { text-decoration: none; color: inherit; display: block; transition: transform .15s, box-shadow .15s; }
.role-card:hover { transform: translateY(-3px); box-shadow: 0 4px 8px rgba(23,63,53,.1), 0 14px 30px rgba(23,63,53,.08); }
.role-card .rc-head { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
.role-card .rc-emoji { font-size: 2rem; width: 52px; height: 52px; display: grid; place-items: center; border-radius: 14px; }
.role-card h3 { margin: 0; font-size: 1.12rem; }
.role-card .rc-en { font-size: .78rem; color: var(--pine-muted); }
.role-card p { margin: 6px 0 10px; font-size: .9rem; color: var(--pine-mid);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.role-card .tags { display: flex; gap: 6px; flex-wrap: wrap; }
.role-card .tag { font-size: .74rem; padding: 2px 10px; border-radius: 999px; background: rgba(23,63,53,.07); color: var(--pine-mid); }

/* ── Quiz ── */
.quiz-progress { margin: 10px 0 4px; }
.progress-track { height: 8px; border-radius: 99px; background: var(--line); overflow: hidden; }
.progress-fill { height: 100%; width: 0; background: var(--pine-mid); border-radius: 99px; transition: width .3s; }
.quiz-chapter { font-family: var(--serif); color: var(--pine-muted); font-size: .9rem; margin: 14px 0 4px; }
.quiz-scene { color: var(--pine-muted); font-size: .85rem; margin-bottom: 4px; }
.quiz-q { font-family: var(--serif); font-size: 1.25rem; margin-bottom: 18px; }
.quiz-options { display: grid; gap: 10px; }
.quiz-option {
  width: 100%; text-align: left;
  background: var(--white); border: 1.5px solid var(--line); border-radius: 14px;
  padding: 14px 18px; font-size: .98rem; color: var(--pine);
  transition: border-color .15s, background .15s, transform .1s;
}
.quiz-option:hover { border-color: var(--orange); }
.quiz-option:active { transform: scale(.985); }
.quiz-option.sel { border-color: var(--pine-mid); background: rgba(23,63,53,.05); }
.quiz-nav { display: flex; justify-content: space-between; margin-top: 20px; gap: 10px; }
.quiz-nav .btn { padding: 9px 20px; font-size: .9rem; }

/* ── Result ── */
.result-hero { text-align: center; padding: 26px 8px; }
.result-hero .rh-badge { font-size: 3.6rem; line-height: 1; }
.result-hero h2 { font-size: 1.8rem; margin: 10px 0 2px; }
.result-hero .rh-word { font-family: var(--serif); font-size: 1.05rem; color: var(--pine-muted); }
.result-quote {
  font-family: var(--serif); font-size: 1.02rem;
  border-left: 4px solid var(--orange); background: var(--white);
  border-radius: 0 14px 14px 0; padding: 14px 20px; max-width: 640px; margin: 0 auto;
}
.result-quote .q-src { display: block; margin-top: 6px; font-size: .8rem; color: var(--pine-muted); }
.result-grid { display: grid; gap: 16px; margin: 22px 0; }
.result-grid h4 { font-size: .82rem; letter-spacing: .04em; color: var(--pine-muted); margin-bottom: 6px; }
.dist-bar { display: grid; gap: 6px; margin: 10px 0 4px; }
.dist-row { display: grid; grid-template-columns: 96px 1fr 44px; align-items: center; gap: 10px; font-size: .85rem; }
.dist-row .dist-track { height: 10px; background: var(--line); border-radius: 99px; overflow: hidden; }
.dist-row .dist-fill { height: 100%; border-radius: 99px; }
.dist-row .dist-pct { text-align: right; color: var(--pine-muted); font-variant-numeric: tabular-nums; }
.result-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-top: 8px; }
.pair-box { border-top: 1px dashed var(--line); padding-top: 18px; margin-top: 4px; }
.pair-box .pair-line { font-family: var(--serif); font-size: 1.05rem; margin-bottom: 6px; }

/* ── Role profile ── */
.role-head { display: flex; align-items: center; gap: 18px; margin-bottom: 18px; flex-wrap: wrap; }
.role-head .rh-emoji { font-size: 3.4rem; width: 92px; height: 92px; display: grid; place-items: center; border-radius: 22px; }
.role-head h2 { margin: 0; font-size: 1.7rem; }
.role-head .rh-sub { color: var(--pine-muted); }
.section-block { margin-bottom: 22px; }
.section-block h3 { font-size: 1.02rem; color: var(--pine-mid); }
.section-block p { margin: 6px 0; }
ul.practice-list { padding-left: 20px; }
ul.practice-list li { margin: 8px 0; }
.quote-block {
  font-family: var(--serif);
  border-left: 4px solid var(--orange); background: var(--white);
  border-radius: 0 14px 14px 0; padding: 14px 20px; margin: 10px 0;
}
.quote-block .q-src { display: block; margin-top: 6px; font-size: .8rem; color: var(--pine-muted); }
.easy-stretch { display: grid; gap: 12px; }
.easy-stretch .es-item { background: var(--white); border: 1px solid var(--line); border-radius: 14px; padding: 12px 16px; }
.easy-stretch .es-item a { text-decoration: none; font-weight: 600; }
.easy-stretch .es-item p { margin: 4px 0 0; font-size: .88rem; color: var(--pine-mid); }

/* ── About / 資訊 ── */
.info-box { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; margin-bottom: 16px; }
.info-box h3 { margin-top: 0; }
.info-box ul { padding-left: 20px; }
.info-box li { margin: 6px 0; font-size: .94rem; }
.disclaimer {
  font-size: .82rem; color: var(--pine-muted);
  border: 1px dashed var(--line); border-radius: 12px; padding: 12px 16px;
  margin-top: 22px;
}

/* ── Dialog ── */
dialog.share-dialog { border: 0; border-radius: 18px; padding: 24px; max-width: 420px; width: 90%; }
dialog.share-dialog::backdrop { background: rgba(23,63,53,.35); }
dialog.share-dialog h3 { margin-top: 0; }
.share-links { display: grid; gap: 10px; margin-top: 12px; }
.share-links .btn { width: 100%; }
dialog .close-x { position: absolute; top: 12px; right: 14px; background: none; border: 0; font-size: 1.2rem; color: var(--pine-muted); }

/* ── Toast (live region) ── */
#toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--pine); color: var(--paper); padding: 10px 20px; border-radius: 999px;
  font-size: .9rem; opacity: 0; pointer-events: none; transition: opacity .25s, transform .25s; z-index: 300;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ── Footer ── */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 26px 20px 34px; text-align: center;
  color: var(--pine-muted); font-size: .86rem;
}
.site-footer a { color: var(--pine-mid); }

/* ── 返回頂部 ── */
#toTop {
  position: fixed; right: 20px; bottom: 20px; z-index: 150;
  width: 44px; height: 44px; border-radius: 50%;
  border: 0; background: var(--pine); color: var(--paper); font-size: 1.15rem;
  box-shadow: var(--shadow);
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity .25s, visibility .25s;
}
#toTop.show { opacity: 1; visibility: visible; pointer-events: auto; }

/* ── 手機閱讀 ── */
@media (max-width: 640px) {
  body { font-size: 15px; line-height: 1.55; }
  section.view { padding: 8px 0 24px; }
  .card { padding: 18px; }
  blockquote, .quote-block { padding: 12px 14px; }
  .hero { padding-top: 26px; }
  .brand-name { font-size: 1.2rem; }
  .brand-slogan { display: block; width: 100%; }
}

/* 無障礙：減少動畫偏好 */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}