/* ============================================================
   陳曦國文 style.css
   配色：奶油白 #F7F3F0｜深墨 #1A1A1A｜藕粉 #C9A0A0｜藕粉淺版 #D4A5A5
   字型：標題 Noto Sans TC｜內文 Noto Serif TC
   ============================================================ */

:root {
  --bg: #F7F3F0;
  --ink: #1A1A1A;
  --ink-2: #2D2B29;
  --accent: #C9A0A0;        /* 藕粉：裝飾線、按鈕、星等、底線 */
  --accent-light: #D4A5A5;  /* 藕粉淺版：hover 色塊底色 */
  --accent-wash: rgba(212, 165, 165, 0.22); /* 淺版的柔化色塊 */
  --sans: 'Noto Sans TC', 'PingFang TC', 'Microsoft JhengHei', sans-serif;
  --serif: 'Noto Serif TC', 'PMingLiU', serif;
  --maxw: 860px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.9;
  letter-spacing: 0.03em;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { flex: 1; width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px 64px; }

h1, h2, h3, .sans { font-family: var(--sans); letter-spacing: 0.06em; }

a { color: inherit; text-decoration: none; }

/* 連結 hover：加藕粉底線，文字不變色（維持可讀性） */
a:hover, a:focus-visible {
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 5px;
}
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

/* ---------- Header（每頁固定的細長條） ---------- */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: var(--bg);
  border-bottom: 1px solid var(--accent);
}
.site-header .inner {
  max-width: var(--maxw); margin: 0 auto;
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 20px;
}
.site-header .brand { font-family: var(--sans); font-weight: 700; font-size: 1.05rem; letter-spacing: 0.14em; }
.site-header nav a { font-family: var(--sans); font-size: 0.92rem; color: var(--ink-2); }

/* ---------- 麵包屑 ---------- */
.breadcrumb {
  font-family: var(--sans); font-size: 0.82rem; color: var(--ink-2);
  padding: 20px 0 4px; letter-spacing: 0.05em;
}
.breadcrumb .sep { color: var(--accent); margin: 0 6px; }

/* ---------- 首頁 Hero ---------- */
.hero {
  min-height: 50vh;
  display: flex; flex-direction: column; justify-content: center; align-items: center;
  text-align: center; padding: 48px 20px 40px;
}
.hero h1 {
  font-size: clamp(2.4rem, 7vw, 3.6rem);
  font-weight: 700; letter-spacing: 0.22em;
  text-indent: 0.22em; /* 平衡字距造成的偏移 */
  margin-bottom: 10px;
}
.hero .tagline { font-size: 0.95rem; color: var(--ink-2); letter-spacing: 0.3em; text-indent: 0.3em; margin-bottom: 36px; }
.hero .brush {
  width: 56px; height: 4px; background: var(--accent);
  border-radius: 2px; margin: 0 auto 36px;
}

/* Hero 淡入（尊重使用者的減少動態設定） */
.fade-in { opacity: 0; transform: translateY(10px); animation: fadeIn 0.9s ease forwards; }
.fade-in.delay { animation-delay: 0.35s; }
@keyframes fadeIn { to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
  .fade-in { animation: none; opacity: 1; transform: none; }
}

/* ---------- 搜尋欄 ---------- */
.search-form { width: 100%; max-width: 520px; display: flex; }
.search-form input {
  flex: 1; padding: 13px 18px;
  border: 1.5px solid var(--accent); border-right: none;
  border-radius: 8px 0 0 8px;
  background: #fff; color: var(--ink);
  font-family: var(--serif); font-size: 1rem;
}
.search-form input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.search-form button {
  padding: 13px 22px; border: none; border-radius: 0 8px 8px 0;
  background: var(--accent); color: #fff;
  font-family: var(--sans); font-size: 0.95rem; letter-spacing: 0.1em;
  cursor: pointer;
}
.search-form button:hover { background: #b98e8e; }

/* ---------- 星等篩選按鈕 ---------- */
.star-filter { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin: 26px 0; }
.star-filter button, .star-filter a {
  font-family: var(--sans); font-size: 0.88rem;
  padding: 7px 16px; border-radius: 999px;
  border: 1.5px solid var(--accent); background: transparent; color: var(--ink-2);
  cursor: pointer; letter-spacing: 0.05em;
}
.star-filter .active { background: var(--accent); color: #fff; }
.star-filter button:hover, .star-filter a:hover { background: var(--accent-wash); text-decoration: none; }

/* ---------- 首頁分類卡片 ---------- */
.category-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 14px; margin-top: 8px;
}
.category-card {
  display: flex; align-items: center; justify-content: center;
  background: var(--accent); color: #fff;
  border-radius: 10px; padding: 34px 12px;
  font-family: var(--sans); font-size: 1.12rem; font-weight: 500; letter-spacing: 0.16em;
  transition: background 0.2s ease;
}
.category-card:hover {
  background: var(--accent-light); color: var(--ink);
  text-decoration: none;
}

/* ---------- 頁面標題與導論 ---------- */
.page-title { font-size: clamp(1.7rem, 5vw, 2.2rem); font-weight: 700; margin: 14px 0 22px; }
.intro {
  border-left: 4px solid var(--accent); /* 左側藕粉裝飾線 */
  padding: 6px 0 6px 20px; margin-bottom: 36px;
  color: var(--ink-2); font-size: 1.02rem;
}

/* ---------- 子分類清單 ---------- */
.sub-list { list-style: none; }
.sub-list li a {
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 12px;
  border-bottom: 1px solid rgba(201, 160, 160, 0.35);
  font-family: var(--sans); font-size: 1.06rem;
}
.sub-list li a::after { content: '→'; color: var(--accent); font-size: 0.95rem; }
.sub-list li a:hover { background: var(--accent-wash); text-decoration: none; }

/* ---------- 文章列表 ---------- */
.article-list { list-style: none; }
.article-list li a {
  display: flex; justify-content: space-between; align-items: baseline; gap: 12px;
  padding: 15px 12px;
  border-bottom: 1px solid rgba(201, 160, 160, 0.35);
}
.article-list li a:hover { background: var(--accent-wash); text-decoration: none; }
.article-list .t { font-family: var(--sans); font-size: 1.05rem; }
.article-list .a { color: var(--ink-2); font-size: 0.88rem; margin-left: 10px; }
.article-list .stars { color: var(--accent); font-size: 0.9rem; white-space: nowrap; letter-spacing: 2px; }

.empty-note { text-align: center; color: var(--ink-2); padding: 48px 0; }

/* ---------- 分頁 ---------- */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 30px; flex-wrap: wrap; }
.pagination button {
  font-family: var(--sans); font-size: 0.9rem;
  min-width: 40px; padding: 7px 12px;
  border: 1.5px solid var(--accent); border-radius: 8px;
  background: transparent; color: var(--ink-2); cursor: pointer;
}
.pagination button:hover:not(:disabled) { background: var(--accent-wash); }
.pagination .current { background: var(--accent); color: #fff; }
.pagination button:disabled { opacity: 0.35; cursor: default; }

/* ---------- 單篇文章 ---------- */
.article-meta {
  font-family: var(--sans); font-size: 0.88rem; color: var(--ink-2);
  margin-bottom: 30px; letter-spacing: 0.06em;
}
.article-meta .stars { color: var(--accent); letter-spacing: 2px; }
.article-meta .dot { color: var(--accent); margin: 0 7px; }

.article-content { font-size: 1.18rem; line-height: 2.2; white-space: pre-line; margin-bottom: 44px; }

.divider { border: none; border-top: 1px solid var(--accent); opacity: 0.55; margin: 8px 0 36px; }

/* ---------- 解析區塊（🔒 密碼保護；僅此區禁止選取） ---------- */
.analysis-block {
  background: #fff;
  border: 1.5px solid var(--accent);
  border-radius: 12px;
  padding: 28px 24px;
  -webkit-user-select: none; user-select: none; /* 僅解析區塊禁止選取 */
}
.analysis-block h2 {
  font-size: 1.05rem; letter-spacing: 0.14em; color: var(--ink-2);
  margin-bottom: 18px; display: flex; align-items: center; gap: 8px;
}
.analysis-locked { text-align: center; padding: 12px 0 6px; }
.analysis-locked .lock-icon { font-size: 2rem; margin-bottom: 12px; }
.analysis-locked .hint { font-family: var(--sans); font-size: 0.85rem; color: var(--ink-2); margin-top: 14px; }
.unlock-form { display: flex; max-width: 360px; margin: 14px auto 0; }
.unlock-form input {
  flex: 1; padding: 10px 14px;
  border: 1.5px solid var(--accent); border-right: none; border-radius: 8px 0 0 8px;
  font-family: var(--sans); font-size: 0.95rem;
}
.unlock-form button {
  padding: 10px 18px; border: none; border-radius: 0 8px 8px 0;
  background: var(--accent); color: #fff; cursor: pointer;
  font-family: var(--sans); letter-spacing: 0.08em;
}
.unlock-form button:hover { background: #b98e8e; }
.unlock-error { color: #a05252; font-family: var(--sans); font-size: 0.85rem; margin-top: 12px; min-height: 1.2em; }
.analysis-content { line-height: 2.1; white-space: pre-line; }
.analysis-content strong { background: var(--accent-wash); padding: 0 3px; border-radius: 3px; }
.analysis-timer { font-family: var(--sans); font-size: 0.78rem; color: var(--ink-2); margin-top: 20px; text-align: right; }

/* ---------- 關於老師 ---------- */
.about-photo {
  width: 200px; height: 200px; object-fit: cover;
  border-radius: 50%; border: 3px solid var(--accent);
  display: block; margin: 30px auto 20px;
  background: var(--accent-wash);
}
.about-name { text-align: center; font-size: 1.5rem; font-weight: 700; margin-bottom: 34px; }
.about-section { margin-bottom: 30px; }
.about-section h2 {
  font-size: 1.05rem; letter-spacing: 0.14em;
  border-left: 4px solid var(--accent); padding-left: 14px; margin-bottom: 12px;
}
.about-email a { border-bottom: 1px solid var(--accent); }

/* ---------- 頁腳 ---------- */
.site-footer {
  border-top: 1px solid var(--accent);
  padding: 26px 20px; text-align: center;
  font-family: var(--sans); font-size: 0.82rem; color: var(--ink-2);
}
.site-footer a { margin-bottom: 6px; display: inline-block; }

/* ---------- 響應式 ---------- */
@media (max-width: 560px) {
  body { font-size: 16px; }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .category-card { padding: 26px 8px; font-size: 1rem; }
  .hero { min-height: 44vh; }
}

/* ---------- 部訂十五徽章（自動依 buding 欄位顯示） ---------- */
.badge-buding {
  display: inline-block;
  background: var(--accent); color: #fff;
  font-family: var(--sans); font-size: 0.66rem; font-weight: 500;
  padding: 1px 9px; border-radius: 999px;
  margin-left: 8px; vertical-align: 2px;
  letter-spacing: 0.1em; white-space: nowrap;
}

/* ---------- 密碼顯示切換（眼睛圖示） ---------- */
.pw-wrap { position: relative; flex: 1; display: flex; }
.pw-wrap input { width: 100%; padding-right: 44px !important; }
.pw-toggle {
  position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
  border: none; background: transparent; cursor: pointer;
  font-size: 1rem; padding: 6px; line-height: 1; opacity: 0.45;
}
.pw-toggle.showing { opacity: 1; }

/* ---------- 目前所在頁面的導覽連結（「你在這裡」標示） ---------- */
.site-header nav a.current,
.site-footer a.current {
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 5px;
  font-weight: 500;
}