/* ==========================================================================
   草本故事館 — 共用樣式表 site.css
   單一來源：色彩變數、版面、導覽列、頁尾、卡片、系列雙色主題
   ========================================================================== */

/* ---------- 設計變數 ---------- */
:root {
  /* 方劑系列 / 全站主色 — 冷調鼠尾草綠（夏季型） */
  --green-900: #3b564c;
  --green-700: #4f6f62;
  --green-500: #6f9083;
  --green-400: #9db6a8;
  --green-050: #eaf1ec;

  /* 炮製系列 — 冷調紫藤／薰衣草（取代暖橘 NG 色） */
  --fire-900: #453f6b;
  --fire-700: #5f5896;
  --fire-500: #8981c2;
  --fire-400: #a99fd4;
  --fire-050: #efebf7;

  /* 銀／冷中性（夏季型：銀非金、珍珠白、藏藍） */
  --gold: #7f8bb0;
  --gold-soft: #c6ccd6;
  --paper: #f0eef3;
  --ink: #333b4a;
  --ink-soft: #59617a;
  --muted: #8a90a4;
  --line: #ddd9e6;
  --white: #ffffff;

  /* 系列主題（預設 = 方劑綠，可由頁面覆寫） */
  --accent-900: var(--green-900);
  --accent-700: var(--green-700);
  --accent-500: var(--green-500);
  --accent-400: var(--green-400);
  --accent-050: var(--green-050);

  --radius: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 10px rgba(52, 67, 94, 0.08);
  --shadow-md: 0 6px 22px rgba(52, 67, 94, 0.12);
  --shadow-lg: 0 12px 40px rgba(52, 67, 94, 0.16);
  --maxw: 1200px;

  --serif: "Noto Serif TC", "Songti TC", "PMingLiU", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft JhengHei",
    "微軟正黑體", "Noto Sans TC", sans-serif;
}

/* 頁面層級系列主題 */
body.theme-paozhi {
  --accent-900: var(--fire-900);
  --accent-700: var(--fire-700);
  --accent-500: var(--fire-500);
  --accent-400: var(--fire-400);
  --accent-050: var(--fire-050);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  line-height: 1.7;
  color: var(--ink);
  background-color: var(--paper);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; }

h1, h2, h3, h4 { font-family: var(--serif); line-height: 1.35; }

a { color: var(--green-500); }

.wrapper {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

.page-content { min-height: calc(100vh - 420px); }

/* 通用區塊容器 */
.section {
  max-width: 1080px;
  margin: 56px auto;
  padding: 0 20px;
}

.section-title {
  text-align: center;
  color: var(--green-700);
  font-size: clamp(1.6rem, 4vw, 2.1rem);
  margin-bottom: 8px;
}

.section-subtitle {
  text-align: center;
  color: var(--muted);
  font-size: 1.05rem;
  margin-bottom: 36px;
}

/* ---------- 網站 Header / 導覽列 ---------- */
.site-header {
  background: linear-gradient(135deg, var(--green-900) 0%, var(--green-500) 100%);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
  position: sticky;
  top: 0;
  z-index: 200;
}

.site-header .wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 66px;
}

.site-title {
  font-family: var(--serif);
  font-size: 1.45rem;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 1px;
}
.site-title:hover { opacity: 0.92; }
.site-logo { height: 38px; width: 38px; border-radius: 50%; background: #fff; }

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  margin: 5px 0;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.98rem;
  padding: 8px 14px;
  border-radius: 20px;
  transition: background 0.25s;
  white-space: nowrap;
}
.site-nav a:hover,
.site-nav a.is-active { background: rgba(255, 255, 255, 0.18); }

/* 導覽列中的系列連結小圓點 */
.nav-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 5px;
  vertical-align: middle;
}
.nav-dot.formula { background: var(--gold-soft); }
.nav-dot.paozhi { background: var(--fire-400); }

/* ---------- 手機導覽 ---------- */
@media (max-width: 880px) {
  .nav-toggle { display: block; }

  .site-nav {
    position: absolute;
    top: 66px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--green-700);
    padding: 8px 12px 16px;
    box-shadow: var(--shadow-md);
    transform: translateY(-140%);
    transition: transform 0.3s ease;
    max-height: calc(100vh - 66px);
    overflow-y: auto;
  }
  .site-nav.open { transform: translateY(0); }

  .site-nav a {
    padding: 13px 12px;
    border-radius: 10px;
    font-size: 1.05rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }
}

/* ---------- 按鈕 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 30px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: transform 0.25s, box-shadow 0.25s, background 0.25s;
  border: 0;
  cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent-700) 0%, var(--accent-500) 100%);
  color: #fff;
  box-shadow: 0 4px 15px rgba(45, 80, 22, 0.25);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.btn-ghost {
  background: #fff;
  color: var(--accent-700);
  border: 2px solid var(--accent-500);
}
.btn-ghost:hover { background: var(--accent-050); transform: translateY(-2px); }

/* ---------- 系列徽章 ---------- */
.series-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 13px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}
.series-badge.formula { background: var(--green-050); color: var(--green-700); }
.series-badge.paozhi { background: var(--fire-050); color: var(--fire-700); }

/* ---------- 故事卡片格線 ---------- */
.story-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.story-card {
  background: #fff;
  padding: 26px;
  border-radius: var(--radius);
  border-top: 4px solid var(--green-500);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s, box-shadow 0.3s;
  display: flex;
  flex-direction: column;
}
.story-card.paozhi { border-top-color: var(--fire-500); }
.story-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }

.story-card h3 {
  margin: 12px 0 10px;
  font-size: 1.3rem;
}
.story-card h3 a { color: var(--green-700); text-decoration: none; }
.story-card.paozhi h3 a { color: var(--fire-700); }
.story-card h3 a:hover { color: var(--green-500); }

.story-card .formula-name {
  color: var(--gold);
  font-weight: 700;
  font-size: 1.02rem;
  margin-bottom: 10px;
}

.story-card .story-excerpt {
  color: #555;
  line-height: 1.75;
  margin: 8px 0 14px;
  flex-grow: 1;
}

.story-card .story-effects {
  background: var(--accent-050);
  padding: 11px 14px;
  border-radius: 10px;
  margin: 4px 0 14px;
  color: var(--accent-700);
  font-size: 0.9rem;
  display: flex;
  gap: 8px;
  align-items: flex-start;
}
.story-card.paozhi .story-effects { background: var(--fire-050); color: var(--fire-700); }

.story-card .card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}
.story-card .story-date { color: var(--muted); font-size: 0.86rem; }
.story-card .read-more { color: var(--green-500); text-decoration: none; font-weight: 700; }
.story-card.paozhi .read-more { color: var(--fire-500); }

/* ---------- 系列分流大卡（首頁） ---------- */
.series-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
}
@media (max-width: 720px) { .series-split { grid-template-columns: 1fr; } }

.series-card {
  position: relative;
  border-radius: var(--radius-lg);
  padding: 40px 34px;
  color: #fff;
  text-decoration: none;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform 0.3s, box-shadow 0.3s;
  display: flex;
  flex-direction: column;
  min-height: 240px;
}
.series-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.series-card.formula { background: linear-gradient(135deg, var(--green-900) 0%, var(--green-500) 100%); }
.series-card.paozhi  { background: linear-gradient(135deg, var(--fire-900) 0%, var(--fire-500) 100%); }

.series-card .series-emoji { font-size: 2.6rem; margin-bottom: 12px; }
.series-card h3 { font-size: 1.9rem; margin-bottom: 6px; color: #fff; }
.series-card .series-count {
  display: inline-block;
  background: rgba(255, 255, 255, 0.18);
  padding: 3px 12px;
  border-radius: 14px;
  font-size: 0.85rem;
  margin-bottom: 14px;
}
.series-card p { color: rgba(255, 255, 255, 0.92); line-height: 1.75; margin-bottom: 20px; flex-grow: 1; }
.series-card .series-go {
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.series-card:hover .series-go { gap: 12px; }

/* ---------- 系列頁 Hero ---------- */
.series-hero {
  text-align: center;
  padding: 66px 20px 54px;
  color: #fff;
  background: linear-gradient(135deg, var(--accent-900) 0%, var(--accent-500) 100%);
}
.series-hero .series-emoji { font-size: 3rem; }
.series-hero h1 { font-size: clamp(2rem, 6vw, 2.9rem); margin: 12px 0; color: #fff; }
.series-hero p { max-width: 640px; margin: 0 auto; font-size: 1.1rem; opacity: 0.95; }
.series-hero .hero-count {
  display: inline-block;
  margin-top: 18px;
  background: rgba(255, 255, 255, 0.16);
  padding: 6px 18px;
  border-radius: 20px;
  font-weight: 600;
}

/* ---------- 內頁共用 Hero（標籤／搜尋／圖鑑／關於） ---------- */
.page-hero {
  text-align: center;
  padding: 60px 20px 48px;
  color: #fff;
  background: linear-gradient(135deg, var(--accent-900) 0%, var(--accent-500) 100%);
}
.page-hero .page-emoji { font-size: 2.8rem; }
.page-hero h1 { font-size: clamp(1.8rem, 5vw, 2.6rem); margin: 10px 0; color: #fff; }
.page-hero .subtitle { max-width: 640px; margin: 0 auto; font-size: 1.08rem; opacity: 0.95; line-height: 1.7; }

.page-hero-stats {
  display: flex;
  justify-content: center;
  gap: 44px;
  margin-top: 26px;
  flex-wrap: wrap;
}
.page-hero-stats .stat-number { display: block; font-size: 2rem; font-weight: 700; color: #fff; }
.page-hero-stats .stat-label { font-size: 0.9rem; color: rgba(255,255,255,0.85); }

/* 內頁內容容器 */
.inner-page { max-width: 1120px; margin: 0 auto; padding: 44px 20px 20px; }
.inner-page.narrow { max-width: 900px; }

/* ---------- 頁尾 ---------- */
.site-footer {
  background: linear-gradient(135deg, var(--green-900) 0%, var(--green-500) 100%);
  color: #fff;
  padding: 52px 20px 22px;
  margin-top: 80px;
}
.footer-content {
  max-width: var(--maxw);
  margin: 0 auto 36px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}
.footer-section h3 { color: var(--gold-soft); margin-bottom: 14px; font-size: 1.35rem; }
.footer-section h4 { color: var(--gold); margin-bottom: 18px; font-size: 1.1rem; }
.footer-section p { line-height: 1.8; opacity: 0.9; margin: 8px 0; }
.footer-tagline { font-style: italic; font-size: 0.95rem; }
.footer-social { display: flex; gap: 13px; margin-bottom: 14px; }
.footer-social-link {
  display: flex; align-items: center; justify-content: center;
  width: 46px; height: 46px; border-radius: 50%;
  background: rgba(255, 255, 255, 0.1); transition: all 0.3s;
}
.footer-social-link:hover { background: rgba(255, 255, 255, 0.22); transform: translateY(-4px); }
.footer-social-link svg { width: 22px; height: 22px; fill: #fff; }
.footer-social-link.instagram:hover { background: linear-gradient(45deg, #f09433, #dc2743, #bc1888); }
.footer-social-link.facebook:hover { background: #1877f2; }
.footer-social-link.line:hover { background: #06c755; }
.footer-social-link.rss:hover { background: #ff6600; }
.footer-social-link.vocus:hover { background: #e8505b; }
.footer-ig-name { font-size: 0.85rem; opacity: 0.8; margin-top: 6px; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 11px; }
.footer-links a { color: #fff; text-decoration: none; opacity: 0.9; transition: opacity 0.3s; }
.footer-links a:hover { opacity: 1; text-decoration: underline; }
.footer-sticker-desc { font-size: 0.92rem; margin-bottom: 14px; }
.footer-sticker-button {
  display: inline-block; background: #06c755; color: #fff;
  padding: 10px 20px; border-radius: 20px; text-decoration: none;
  font-size: 0.92rem; font-weight: 700; transition: all 0.3s;
}
.footer-sticker-button:hover { background: #05b04c; transform: translateY(-2px); }
.footer-bottom { text-align: center; padding-top: 26px; border-top: 1px solid rgba(255, 255, 255, 0.2); }
.footer-bottom p { margin: 0; opacity: 0.8; font-size: 0.92rem; }

@media (max-width: 1024px) { .footer-content { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) {
  .footer-content { grid-template-columns: 1fr; gap: 28px; }
  .site-footer { padding: 40px 20px 20px; margin-top: 56px; }
}