/* ═══════════════════════════════════════
   Media Flow — shared.css
   所有頁面共用的基底、元件、動畫
   修改色碼後請同步更新 MeetingScribe app_web.py
   ═══════════════════════════════════════ */

/* ── 色彩系統 ── */
:root {
  --bg: #f0f6ff;
  --card: #ffffff;
  --border: rgba(37,99,235,0.1);
  --border-hover: rgba(37,99,235,0.4);
  --accent: #2563eb;
  --accent-glow: rgba(37,99,235,0.08);
  --text: #0f1e3a;
  --muted: rgba(15,30,58,0.5);
  --soon: rgba(15,30,58,0.2);
  --error: #e85d2a;

  /* ── 間距系統 ──
     所有排版間距從這裡控制，mobile 覆寫在下方 @media
     新增頁面請使用這些 token，不要寫 magic number */
  --space-page: 2rem;           /* 頁面左右 gutter */
  --space-nav: 2rem;            /* nav 上下 */
  --space-section: 1.5rem;      /* 區塊之間 */
  --space-block: 1.25rem;       /* 區塊內元素之間 */
  --space-card: 2rem 1.75rem;   /* card 內距 */
  --space-content: 2rem;        /* 內容區塊內距（editor-card 等） */
  --space-footer: 2rem;         /* footer 上下 */
  --space-grid-gap: 1rem;       /* grid 間距 */
  --space-element: 1rem;        /* 小元素間距 */
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── Body ── */
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── 背景網格 ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(37,99,235,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37,99,235,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* ── 光暈 ── */
body::after {
  content: '';
  position: fixed;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(37,99,235,0.1) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* ── 容器 ── */
.wrap {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 var(--space-page);
}

/* ── NAV ── */
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-nav) 0;
}
.logo {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.5px;
  color: var(--text);
  text-decoration: none;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.logo span { color: var(--accent); }
.nav-tag {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 4px 12px;
  border-radius: 999px;
}
.nav-back {
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s;
}
.nav-back:hover { color: var(--accent); }

/* ── CARD 元件 ── */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: var(--space-card);
  text-decoration: none;
  display: block;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
  opacity: 0;
  animation: fadeUp 0.6s forwards;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(37,99,235,0.06), transparent 60%);
  opacity: 0;
  transition: opacity 0.3s;
}
.card:hover::before { opacity: 1; }
.card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(37,99,235,0.12);
}
.card.coming-soon {
  cursor: default;
  opacity: 0 !important;
  animation: fadeUp 0.6s forwards !important;
}
.card.coming-soon:hover {
  transform: none;
  border-color: var(--border);
  box-shadow: none;
}
.card.coming-soon::before { display: none; }

.card-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.1em;
  margin-bottom: var(--space-section);
}
.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-block);
  background: var(--accent-glow);
  border: 1px solid rgba(37,99,235,0.15);
}
.card.coming-soon .card-icon {
  background: rgba(255,255,255,0.04);
  border-color: var(--border);
}
.card-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: calc(var(--space-element) * 0.5);
  letter-spacing: -0.3px;
}
.card.coming-soon .card-title { color: var(--soon); }
.card-desc {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: var(--space-section);
}
.card.coming-soon .card-desc { color: var(--soon); }
.card-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
}
.card-cta svg { transition: transform 0.2s; }
.card:hover .card-cta svg { transform: translateX(3px); }
.card.coming-soon .card-cta { color: var(--soon); }

.card-stat {
  font-size: 12px;
  font-weight: 500;
  color: var(--accent);
  opacity: 0.7;
  letter-spacing: 0.03em;
  margin-bottom: calc(var(--space-element) * 0.5);
}

/* ── PAGE HEADER（子頁面共用） ── */
.page-header {
  text-align: center;
  padding: var(--space-nav) 0 var(--space-section);
  opacity: 0;
  animation: fadeUp 0.6s 0.1s forwards;
}
.page-header h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--text);
  margin-bottom: calc(var(--space-element) * 0.5);
}
.page-header h1 em {
  font-style: normal;
  color: var(--accent);
}
.page-header p {
  font-size: 15px;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.6;
}
.page-header .page-stat {
  font-size: 12px;
  font-weight: 500;
  color: var(--accent);
  opacity: 0.7;
  letter-spacing: 0.03em;
  margin-top: var(--space-element);
}

/* ── SECTION LABEL ── */
.section-label {
  font-family: 'DM Sans', sans-serif;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: var(--space-section);
  opacity: 0;
  animation: fadeUp 0.6s 0.4s forwards;
}

/* ── BUTTON（子頁面共用） ── */
.btn {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 12px;
  padding: 12px 28px;
  font-family: 'DM Sans', sans-serif;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s, box-shadow 0.2s;
  white-space: nowrap;
}
.btn:hover {
  background: #1d4ed8;
  box-shadow: 0 8px 24px rgba(37,99,235,0.25);
}
.btn:active {
  transform: scale(0.97);
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ── DROP ZONE（工具頁面共用） ── */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: calc(var(--space-content) * 2) var(--space-content);
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}
.drop-zone:hover,
.drop-zone.dragover {
  border-color: var(--accent);
  background: var(--accent-glow);
}
.drop-zone p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}
.drop-zone .drop-icon {
  margin-bottom: var(--space-element);
  color: var(--accent);
  opacity: 0.5;
}
.drop-zone[role="button"] { outline: none; }

/* ── STATUS BAR（錯誤/成功提示） ── */
.status-bar {
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 13px;
  line-height: 1.5;
  margin-bottom: var(--space-element);
  display: flex;
  align-items: center;
  gap: 8px;
}
.status-bar.error {
  background: rgba(232,93,42,0.08);
  border: 1px solid rgba(232,93,42,0.3);
  color: var(--error);
}
.status-bar.success {
  background: rgba(22,163,74,0.08);
  border: 1px solid rgba(22,163,74,0.3);
  color: #16a34a;
}
.status-bar.warning {
  background: rgba(234,179,8,0.08);
  border: 1px solid rgba(234,179,8,0.3);
  color: #a16207;
}

/* ── AD BANNER ── */
.ad-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: var(--space-element);
  margin-bottom: var(--space-section);
  min-height: 90px;
  color: var(--muted);
  font-size: 12px;
}

/* ── FOOTER ── */
footer {
  border-top: 1px solid var(--border);
  padding: var(--space-footer) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-logo {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 14px;
  color: var(--muted);
}
.footer-logo span { color: var(--accent); }
.footer-note {
  font-size: 12px;
  color: var(--soon);
}
.footer-link {
  font-size: 12px;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-link:hover { color: var(--accent); }

/* ── LANGUAGE SWITCHER ── */
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
  font-size: 12px;
}
.lang-link {
  color: var(--muted);
  text-decoration: none;
  padding: 4px 6px;
  border-radius: 4px;
  transition: color 0.2s, background 0.2s;
}
.lang-link:hover { color: var(--accent); background: var(--accent-glow); }
.lang-link.lang-active { color: var(--accent); font-weight: 500; }
.lang-sep { color: var(--border-hover); font-size: 10px; }

/* ── LANGUAGE BANNER ── */
#lang-banner { display: none; }
#lang-banner.lang-banner-show {
  display: block;
  background: rgba(37,99,235,0.06);
  border-bottom: 1px solid var(--border);
  animation: fadeUp 0.3s ease-out;
}
#lang-banner.lang-banner-hide { display: none; }
.lang-banner-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 8px var(--space-page);
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text);
}
.lang-banner-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}
.lang-banner-link:hover { text-decoration: underline; }
.lang-banner-close {
  margin-left: auto;
  background: none;
  border: none;
  font-size: 18px;
  color: var(--muted);
  cursor: pointer;
  padding: 4px 8px;
  line-height: 1;
}
.lang-banner-close:hover { color: var(--text); }

/* ── 動畫 ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── RELATED TOOLS（工具頁底部推薦） ── */
.related-tools {
  margin: var(--space-section) 0;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-grid-gap);
}
.related-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: var(--space-block);
  text-decoration: none;
  display: block;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.related-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37,99,235,0.1);
}
.related-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}
.related-desc {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.5;
}

/* ── FAQ（<details> 手風琴） ── */
.faq-section {
  margin: var(--space-section) 0;
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-item:last-child {
  border-bottom: none;
}
.faq-item summary {
  padding: var(--space-block) 0;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-element);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 18px;
  font-weight: 300;
  color: var(--muted);
  transition: transform 0.2s;
  flex-shrink: 0;
}
.faq-item[open] summary::after {
  transform: rotate(45deg);
}
.faq-item .faq-a {
  padding: 0 0 var(--space-block);
  font-size: 13px;
  color: var(--muted);
  line-height: 1.7;
}

/* ── Focus ── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ── Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ── Mobile ── */
@media (max-width: 640px) {
  :root {
    --space-page: 1.25rem;
    --space-nav: 1.5rem;
    --space-section: 1.25rem;
    --space-block: 1rem;
    --space-card: 1.5rem 1.25rem;
    --space-content: 1.25rem;
    --space-footer: 1.5rem;
    --space-grid-gap: 0.75rem;
    --space-element: 0.75rem;
  }
  .logo {
    font-size: 16px;
  }
  .card {
    padding: 0.9rem;
    border-radius: 16px;
  }
  .card-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    margin-bottom: 0.5rem;
  }
  .card-title {
    font-size: 14px;
    margin-bottom: 0.2rem;
  }
  .card-desc {
    font-size: 12px;
    margin-bottom: 0.4rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .card-stat {
    font-size: 10px;
    margin-bottom: 0.3rem;
  }
  .card-cta {
    font-size: 12px;
  }
  footer {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}