/* ===================================================================
   全站共用樣式與主題變數 (Global Theme & Styles)
   專為溫馨、浪漫、輕量的小應用設計
=================================================================== */

:root {
  --primary: #e05780;
  --primary-light: #ffe3ec;
  --primary-dark: #b8325a;
  --accent: #f7a072;
  --accent-light: #ffedd8;
  
  --bg-gradient: linear-gradient(135deg, #fff5f5 0%, #fff0f5 50%, #fdfbf7 100%);
  --card-bg: rgba(255, 255, 255, 0.88);
  --card-hover-bg: rgba(255, 255, 255, 0.98);
  --card-border: rgba(224, 87, 128, 0.12);
  
  --text-main: #2d3142;
  --text-sub: #787c91;
  --text-muted: #a6abbd;

  --shadow-sm: 0 4px 12px rgba(224, 87, 128, 0.06);
  --shadow-md: 0 8px 24px rgba(224, 87, 128, 0.10);
  --shadow-lg: 0 16px 36px rgba(224, 87, 128, 0.14);
  
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 26px;
  --radius-full: 9999px;

  --transition-fast: 0.2s cubic-bezier(0.25, 0.8, 0.25, 1);
  --transition-normal: 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Reset & 基本設定 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  min-height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", sans-serif;
  color: var(--text-main);
  background: var(--bg-gradient);
  background-attachment: fixed;
  line-height: 1.6;
  font-size: 16px;
}

/* 滾動條美化 */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-thumb {
  background: var(--primary-light);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* 容器樣式 */
.container {
  width: 100%;
  max-width: 680px;
  margin: 0 auto;
  padding: 24px 18px 48px;
}

/* 共同卡片樣式 */
.card {
  background: var(--card-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 20px;
  transition: all var(--transition-normal);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* 常用標籤 Badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  background: var(--primary-light);
  color: var(--primary-dark);
}

.badge-accent {
  background: var(--accent-light);
  color: #c85a2b;
}

/* 常用按鈕 Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, #f06292 100%);
  color: white;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  filter: brightness(1.05);
}

.btn-primary:active {
  transform: translateY(1px);
}

.btn-outline {
  background: white;
  color: var(--primary);
  border: 1.5px solid var(--primary-light);
}

.btn-outline:hover {
  background: var(--primary-light);
}

/* 浮動回目錄按鈕 (由 common.js 自動注入或手動使用) */
.gf-back-home-fab {
  position: fixed;
  bottom: 24px;
  left: 20px;
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-md);
  color: var(--text-main);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.gf-back-home-fab:hover {
  background: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: var(--primary);
}

.gf-back-home-fab .fab-icon {
  font-size: 1.1rem;
}

/* 愛心飄落動畫效果 (微互動) */
.click-heart {
  position: fixed;
  pointer-events: none;
  font-size: 18px;
  animation: floatUpFade 1s cubic-bezier(0.2, 0.8, 0.3, 1) forwards;
  z-index: 10000;
}

@keyframes floatUpFade {
  0% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(0.6) rotate(0deg);
  }
  50% {
    transform: translate(-50%, -80px) scale(1.2) rotate(15deg);
  }
  100% {
    opacity: 0;
    transform: translate(-50%, -120px) scale(0.8) rotate(-10deg);
  }
}