/* ===== 基本設定 ===== */
:root {
  --primary: #b5453f;      /* 櫻紅 */
  --primary-dark: #8f332e;
  --accent: #f3d9d7;
  --text: #2b2b2b;
  --muted: #6b6b6b;
  --bg: #fffdfb;
  --bg-alt: #f7f1ee;
  --card: #ffffff;
  --border: #e6dcd9;
  --radius: 10px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  width: min(1100px, 100% - 32px);
  margin: 0 auto;
}

h1, h2, h3 { line-height: 1.3; margin: 0 0 .5em; }
h2 {
  font-size: 1.7rem;
  border-left: 6px solid var(--primary);
  padding-left: 12px;
  margin-bottom: 1.2em;
}
h3 { font-size: 1.15rem; color: var(--primary-dark); }

ul { padding-left: 1.3em; margin: 0 0 1em; }

/* ===== 頁首 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: #fff;
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 60px;
  flex-wrap: wrap;
}
.brand { font-weight: 700; font-size: 1.2rem; color: var(--primary-dark); }
.site-nav { display: flex; gap: 18px; }
.site-nav a { color: var(--text); font-weight: 500; padding: 6px 0; }
.site-nav a:hover { color: var(--primary); text-decoration: none; }
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 1.3rem;
  padding: 2px 10px;
  cursor: pointer;
}

/* ===== 橫幅 ===== */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
  padding: 64px 0;
  text-align: center;
}
.hero-kicker { margin: 0; letter-spacing: .15em; opacity: .85; font-size: .9rem; }
.hero h1 { font-size: 2.4rem; margin: .3em 0; }
.hero-sub { margin: 0; font-size: 1.1rem; opacity: .9; }

.site-nav a.active { color: var(--primary); border-bottom: 2px solid var(--primary); }
.sub-nav { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.sub-nav a {
  color: #fff;
  border: 1px solid rgba(255,255,255,.6);
  border-radius: 999px;
  padding: 5px 16px;
  font-size: .95rem;
}
.sub-nav a:hover { background: rgba(255,255,255,.15); text-decoration: none; }
.course-hero { padding: 48px 0; }

.course-entry { display: block; color: var(--text); position: relative; padding-bottom: 48px; }
.course-entry:hover { text-decoration: none; border-color: var(--primary); box-shadow: 0 4px 14px rgba(0,0,0,.06); }
.course-entry .meta { color: var(--muted); font-size: .9rem; margin-top: -.4em; }
.course-entry .enter {
  position: absolute; left: 22px; bottom: 16px;
  color: var(--primary); font-weight: 600;
}

/* ===== 個人簡介：照片 ===== */
.profile { display: flex; gap: 24px; align-items: center; margin-bottom: 20px; }
.profile-photo {
  width: 150px; height: 190px; object-fit: cover; flex: none;
  border-radius: var(--radius); border: 1px solid var(--border);
}
.profile-text h3 { margin-bottom: .3em; }
.profile-text p { margin: 0 0 .4em; }
@media (max-width: 720px) {
  .profile { flex-direction: column; text-align: center; }
}

/* ===== 區塊 ===== */
.section { padding: 56px 0; }
.section.alt { background: var(--bg-alt); }
.note { color: var(--muted); margin-top: -0.8em; margin-bottom: 1.2em; }

.grid { display: grid; gap: 20px; }
.grid.two { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
}
.card ul:last-child, .card p:last-child { margin-bottom: 0; }

.tags { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.tags li {
  background: var(--accent);
  color: var(--primary-dark);
  padding: 3px 10px;
  border-radius: 999px;
  font-size: .9rem;
}

.course .meta { color: var(--muted); font-size: .9rem; margin-top: -.4em; }

/* ===== 教材清單 ===== */
.filter { margin-bottom: 18px; }
.filter input {
  width: min(420px, 100%);
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 1rem;
}

.material-group { margin-bottom: 28px; }
.material-group h3 {
  border-bottom: 2px solid var(--accent);
  padding-bottom: 6px;
}
.material-group h4 {
  margin: 14px 0 6px;
  font-size: 1rem;
  color: var(--muted);
}
.file-list { list-style: none; padding: 0; margin: 0; }
.file-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 10px;
  border-bottom: 1px dashed var(--border);
}
.file-list li:hover { background: var(--bg-alt); }
.badge {
  flex: none;
  font-size: .72rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 4px;
  color: #fff;
  min-width: 44px;
  text-align: center;
}
.badge.pptx { background: #d24726; }
.badge.docx { background: #2b579a; }
.badge.doc  { background: #2b579a; }
.badge.pdf  { background: #b30b00; }
.badge.zip  { background: #6b6b6b; }

details.newsletter summary {
  cursor: pointer;
  font-weight: 500;
  padding: 8px 0;
}
.newsletter-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-top: 8px;
}
.newsletter-grid a {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 3px 9px;
  font-size: .9rem;
  background: #fff;
}
.empty { color: var(--muted); padding: 12px 0; }

/* ===== 模擬測驗 ===== */
.question {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 14px;
}
.question p { margin: 0 0 8px; font-weight: 600; }
.question .qtag {
  display: inline-block;
  font-size: .78rem;
  color: var(--primary-dark);
  background: var(--accent);
  padding: 1px 8px;
  border-radius: 999px;
  margin-right: 6px;
  font-weight: 500;
}
.question label { display: block; padding: 4px 0; cursor: pointer; }
.question input { margin-right: 8px; }
.question.correct { border-color: #3a9d5d; background: #f1faf4; }
.question.wrong   { border-color: #d33; background: #fff4f4; }
.explain { font-size: .92rem; color: var(--muted); margin-top: 8px; }

.quiz-actions { display: flex; gap: 10px; margin-top: 6px; }
.btn {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 9px 22px;
  font-size: 1rem;
  cursor: pointer;
}
.btn:hover { background: var(--primary-dark); }
.btn.secondary { background: #fff; color: var(--primary-dark); border: 1px solid var(--primary); }
.quiz-result {
  margin-top: 18px;
  padding: 14px 18px;
  background: #fff;
  border-left: 6px solid var(--primary);
  border-radius: var(--radius);
  font-size: 1.1rem;
}

/* ===== 學習資源 ===== */
.resource a { font-weight: 600; font-size: 1.05rem; }
.resource p { margin: 4px 0 0; color: var(--muted); font-size: .95rem; }

/* ===== 頁尾 ===== */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  text-align: center;
  color: var(--muted);
  font-size: .9rem;
}

/* ===== 手機版 ===== */
@media (max-width: 720px) {
  .grid.two { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.8rem; }
  .nav-toggle { display: block; }
  .site-nav {
    display: none;
    flex-direction: column;
    width: 100%;
    gap: 0;
    padding-bottom: 8px;
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 8px 0; border-top: 1px solid var(--border); }
}

/* ===== 教材列的測驗按鈕 ===== */
.file-list li a:first-of-type { flex: 1; }
.quiz-btn {
  flex: none;
  background: var(--primary);
  color: #fff !important;
  border-radius: 999px;
  padding: 2px 12px;
  font-size: .82rem;
  font-weight: 600;
  white-space: nowrap;
}
.quiz-btn:hover { background: var(--primary-dark); text-decoration: none; }
.no-quiz { flex: none; color: var(--muted); font-size: .8rem; white-space: nowrap; }

/* ===== 測驗清單卡片 ===== */
.quiz-card { display: flex; flex-direction: column; }
.quiz-card .meta { color: var(--muted); font-size: .9rem; margin-top: -.4em; flex: 1; }
.quiz-card-actions { display: flex; gap: 14px; align-items: center; margin-top: 10px; }
.quiz-card-actions .quiz-btn { font-size: .95rem; padding: 6px 18px; }

/* ===== 獨立測驗頁 ===== */
.quiz-intro { margin-bottom: 20px; }
.quiz-intro p { margin: 0; }
.sub-nav a { max-width: 100%; overflow: hidden; text-overflow: ellipsis; }
.question label { padding-left: 4px; }
.question input:disabled + * { opacity: .9; }