/* ==========================================================================
   「印信」南臺請假 · 官方網站專屬樣式表 (site.css)
   溫潤宣紙 × 思源宋體 × 朱砂印泥美學
   ========================================================================== */

:root {
  --paper: #F6F0E4;
  --paper-raised: #FBF7EE;
  --paper-sunk: #ECE3D1;
  --ink: #1C1A17;
  --ink-soft: #57524A;
  --ink-faint: #8C857B;
  --line: #DCD2BE;
  --vermilion: #C8341E;
  --vermilion-dark: #9E2412;
  --vermilion-wash: rgba(200, 52, 30, 0.08);
  --pine: #2B6E46;
  --pine-wash: rgba(43, 110, 70, 0.09);
  --ochre: #B86B19;
  --ochre-wash: rgba(184, 107, 25, 0.1);
  --indigo: #294E6B;
  --shadow-sm: 0 2px 6px rgba(28, 26, 23, 0.05);
  --shadow-md: 0 8px 24px rgba(28, 26, 23, 0.08);
  --shadow-lg: 0 20px 48px rgba(28, 26, 23, 0.12);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --font-serif: "Noto Serif TC", "Songti TC", "PMingLiU", serif;
  --font-sans: "Noto Sans TC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", Consolas, monospace;
}

[data-theme="dark"] {
  --paper: #161513;
  --paper-raised: #201E1B;
  --paper-sunk: #100F0D;
  --ink: #EDE6D8;
  --ink-soft: #ABA396;
  --ink-faint: #6E685F;
  --line: #302D28;
  --vermilion: #DF4B35;
  --vermilion-wash: rgba(223, 75, 53, 0.14);
  --pine: #429966;
  --pine-wash: rgba(66, 153, 102, 0.14);
  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 48px rgba(0, 0, 0, 0.55);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.25s ease, color 0.25s ease;
}

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

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─────────────────────────────────────────────────────────────
   頂部導覽列 (Navbar)
   ───────────────────────────────────────────────────────────── */
.site-navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(246, 240, 228, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
[data-theme="dark"] .site-navbar {
  background-color: rgba(22, 21, 19, 0.88);
}
.navbar-inner {
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-seal {
  width: 36px;
  height: 36px;
  border: 2px solid var(--vermilion);
  border-radius: 7px;
  color: var(--vermilion);
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--vermilion-wash);
  transform: rotate(-3deg);
}
.brand-title {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 1.25rem;
  letter-spacing: 0.02em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink-soft);
  transition: color 0.2s;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--vermilion);
}
.theme-toggle-btn {
  background: var(--paper-sunk);
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  cursor: pointer;
  font-family: inherit;
}

/* ─────────────────────────────────────────────────────────────
   Hero 主視覺區
   ───────────────────────────────────────────────────────────── */
.hero-section {
  padding: 72px 0 64px 0;
  border-bottom: 1px solid var(--line);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background-color: var(--vermilion-wash);
  border: 1px solid var(--vermilion);
  color: var(--vermilion);
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 20px;
}
.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 4.5vw, 3.6rem);
  font-weight: 900;
  line-height: 1.18;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}
.hero-title span {
  color: var(--vermilion);
}
.hero-desc {
  font-size: 1.1rem;
  color: var(--ink-soft);
  margin-bottom: 32px;
  max-width: 540px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 28px;
}
.btn-primary-seal {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background-color: var(--vermilion);
  color: #FAF6EE;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.05rem;
  box-shadow: 0 6px 18px rgba(200, 52, 30, 0.25);
  transition: transform 0.2s, background-color 0.2s;
}
.btn-primary-seal:hover {
  background-color: var(--vermilion-dark);
  transform: translateY(-2px);
}
.btn-outline-paper {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--paper-raised);
  color: var(--ink);
  border: 1.5px solid var(--line);
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  transition: border-color 0.2s, transform 0.2s;
}
.btn-outline-paper:hover {
  border-color: var(--vermilion);
  transform: translateY(-2px);
}
.hero-trust-notes {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.85rem;
  color: var(--ink-faint);
}

/* 擬真手機預覽框 */
.phone-mockup {
  background-color: var(--paper-raised);
  border: 2px solid var(--ink);
  border-radius: 34px;
  padding: 18px;
  box-shadow: var(--shadow-lg);
  max-width: 360px;
  margin: 0 auto;
  position: relative;
}
.phone-screen {
  background-color: var(--paper);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 20px 16px;
}
.mock-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 16px;
}
.mock-hero-card {
  background-color: var(--vermilion-wash);
  border: 1px solid var(--vermilion);
  border-left: 4px solid var(--vermilion);
  border-radius: 12px;
  padding: 16px;
  position: relative;
  margin-bottom: 14px;
}
.mock-big-num {
  font-family: var(--font-serif);
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--vermilion);
  line-height: 1.1;
}
.mock-seal-stamp {
  position: absolute;
  right: 14px;
  bottom: 14px;
  width: 44px;
  height: 44px;
  border: 2.5px solid var(--vermilion);
  border-radius: 6px;
  color: var(--vermilion);
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 1.35rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: rotate(-6deg);
  background: rgba(200, 52, 30, 0.06);
}
.mock-course-row {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  font-size: 0.85rem;
}

/* ─────────────────────────────────────────────────────────────
   特色 Bento Grid 區塊
   ───────────────────────────────────────────────────────────── */
.section-block {
  padding: 72px 0;
  border-bottom: 1px solid var(--line);
}
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px auto;
}
.section-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 900;
  margin-bottom: 12px;
}
.section-sub {
  color: var(--ink-soft);
  font-size: 1rem;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background-color: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, border-color 0.2s;
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--vermilion);
}
.feature-seal {
  width: 42px;
  height: 42px;
  border: 2px solid var(--vermilion);
  border-radius: 8px;
  color: var(--vermilion);
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--vermilion-wash);
  margin-bottom: 16px;
}
.feature-card h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  margin-bottom: 10px;
}
.feature-card p {
  color: var(--ink-soft);
  font-size: 0.93rem;
}

/* ─────────────────────────────────────────────────────────────
   法律條款專頁排版 (Privacy Policy / Terms of Service)
   ───────────────────────────────────────────────────────────── */
.legal-page-wrap {
  padding: 56px 0 80px 0;
}
.legal-paper-sheet {
  max-width: 820px;
  margin: 0 auto;
  background-color: var(--paper-raised);
  border: 1px solid var(--line);
  border-top: 5px solid var(--vermilion);
  border-radius: var(--radius-md);
  padding: 48px 40px;
  box-shadow: var(--shadow-md);
}
.legal-meta {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-faint);
  margin-bottom: 8px;
}
.legal-paper-sheet h1 {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 900;
  margin-bottom: 24px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}
.legal-paper-sheet h2 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--vermilion);
  margin: 28px 0 12px 0;
}
.legal-paper-sheet p {
  color: var(--ink-soft);
  margin-bottom: 14px;
}
.legal-paper-sheet ul,
.legal-paper-sheet ol {
  padding-left: 22px;
  margin-bottom: 16px;
  color: var(--ink-soft);
}
.legal-paper-sheet li {
  margin-bottom: 8px;
}
.legal-highlight-box {
  background-color: var(--paper-sunk);
  border-left: 4px solid var(--pine);
  padding: 16px 20px;
  border-radius: 6px;
  margin: 20px 0;
  font-size: 0.95rem;
}

/* ─────────────────────────────────────────────────────────────
   頁尾 (Footer)
   ───────────────────────────────────────────────────────────── */
.site-footer {
  padding: 48px 0;
  background-color: var(--paper-sunk);
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
  color: var(--ink-soft);
}
.footer-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}
.footer-links a:hover {
  color: var(--vermilion);
  text-decoration: underline;
}

@media (max-width: 860px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .legal-paper-sheet {
    padding: 28px 20px;
  }
  .nav-links {
    gap: 14px;
  }
}