/* ============================================
   智能冰箱 - 品牌化设计系统
   ============================================ */

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

/* ---- CSS 变量（亮色/暗色） ---- */
:root {
  --primary: #16a34a;
  --primary-hover: #15803d;
  --primary-light: #f0fdf4;
  --gradient-start: #16a34a;
  --gradient-end: #0ea5e9;
  --danger: #e74c3c;
  --danger-light: #fef2f2;
  --warning: #ea580c;
  --warning-light: #fff7ed;
  --bg: #f5f6fa;
  --card-bg: #fff;
  --text: #1a1a2e;
  --text-secondary: #666;
  --text-tertiary: #999;
  --border: #eee;
  --shadow: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-lg: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-hover: 0 8px 24px rgba(22,163,74,0.12);
  --skeleton: #e8e8e8;
  --mark-bg: #fef9c3;
  --banner-bg: #fff7ed;
  --banner-border: #fed7aa;
  --banner-text: #9a3412;
  --tag-green-bg: #f0fdf4;
  --tag-green-text: #16a34a;
  --fav-color: #e74c3c;
  --tag-orange-bg: #fff7ed;
  --tag-orange-text: #ea580c;
  --tag-red-bg: #fef2f2;
  --tag-red-text: #e74c3c;
  --tag-gray-bg: #f5f5f5;
  --tag-gray-text: #666;
  --toast-bg: #333;
  --toast-text: #fff;
  --scrollbar-track: transparent;
  --scrollbar-thumb: #ccc;
  /* 圆角体系 */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
}

[data-theme="dark"] {
  --primary: #22c55e;
  --primary-hover: #16a34a;
  --primary-light: #1a3a2e;
  --gradient-start: #15803d;
  --gradient-end: #0284c7;
  --danger: #ef4444;
  --danger-light: #3a1a1e;
  --warning: #f97316;
  --warning-light: #3a2a1e;
  --bg: #1a1a2e;
  --card-bg: #2a2a3e;
  --text: #e5e5e5;
  --text-secondary: #999;
  --text-tertiary: #777;
  --border: #3a3a4e;
  --shadow: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-lg: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-hover: 0 8px 24px rgba(34,197,94,0.15);
  --skeleton: #3a3a4e;
  --mark-bg: #5a4a20;
  --banner-bg: #3a2a1e;
  --banner-border: #7a4a1e;
  --banner-text: #fbd38d;
  --tag-green-bg: #1a3a2e;
  --tag-green-text: #22c55e;
  --tag-orange-bg: #3a2a1e;
  --tag-orange-text: #f97316;
  --tag-red-bg: #3a1a1e;
  --tag-red-text: #ef4444;
  --tag-gray-bg: #2a2a3e;
  --tag-gray-text: #999;
  --toast-bg: #555;
  --toast-text: #fff;
  --scrollbar-track: transparent;
  --scrollbar-thumb: #555;
}

/* ---- 基础 ---- */
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  max-width: 800px;
  margin: 0 auto;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 滚动条美化 */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--scrollbar-track); }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 2px; }

#app { padding-bottom: 70px; }

/* ---- 顶部栏 ---- */
#header {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  padding: 10px 14px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(22,163,74,0.2);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

#page-title {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  flex: 1;
  text-shadow: 0 1px 2px rgba(0,0,0,0.15);
}

@media (max-width: 480px) {
  #header { padding: 8px 12px; }
  #page-title { font-size: 15px; }
}

#theme-toggle {
  background: rgba(255,255,255,0.2);
  border: none;
  font-size: 18px;
  cursor: pointer;
  padding: 6px 10px;
  line-height: 1;
  border-radius: var(--radius-md);
  transition: background 0.2s;
  user-select: none;
  color: #fff;
}

#theme-toggle:hover { background: rgba(255,255,255,0.3); }

/* ---- 底部导航 ---- */
#bottom-nav {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  max-width: 800px;
  width: 100%;
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  display: flex;
  z-index: 100;
  padding-bottom: env(safe-area-inset-bottom, 0);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  box-shadow: 0 -2px 12px rgba(0,0,0,0.06);
}

.nav-item {
  flex: 1;
  text-align: center;
  padding: 8px 0 6px;
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 11px;
  transition: color 0.2s, transform 0.1s;
  position: relative;
}

.nav-item:active { transform: scale(0.95); }

.nav-item.active {
  color: var(--primary);
}

.nav-item.active .nav-icon {
  transform: translateY(-2px);
}

.nav-item.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 3px;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  border-radius: 2px;
}

.nav-icon {
  display: block;
  font-size: 20px;
  margin-bottom: 2px;
  transition: transform 0.2s;
}

/* ---- 主内容区 ---- */
#main-content {
  padding: 16px;
  animation: slideUp 0.25s ease;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ---- 卡片 ---- */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 14px;
  margin-bottom: 10px;
  box-shadow: var(--shadow);
  transition: box-shadow 0.25s, transform 0.2s;
}

.card:active { transform: scale(0.99); }
.card.clickable { cursor: pointer; }
.card.clickable:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

/* ---- 按钮系统 ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
  user-select: none;
}

.btn:active { transform: scale(0.97); }
.btn:hover { opacity: 0.9; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.btn-sm {
  font-size: 12px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--card-bg);
  cursor: pointer;
  color: var(--text-secondary);
  transition: border-color 0.2s, color 0.2s, background 0.2s;
  user-select: none;
}

.btn-sm:active { transform: scale(0.95); }
.btn-sm:hover { border-color: var(--primary); color: var(--primary); }
.btn-sm.danger { color: var(--danger); }
.btn-sm.danger:hover { border-color: var(--danger); color: var(--danger); background: var(--danger-light); }
.btn-sm.success { color: var(--primary); }
.btn-sm.success:hover { border-color: var(--primary); background: var(--primary-light); }

.btn-block { width: 100%; }

/* ---- 输入框 ---- */
.input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  outline: none;
  background: var(--card-bg);
  color: var(--text);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.15); }

select.input { appearance: auto; }

textarea.input {
  resize: vertical;
  font-family: inherit;
  line-height: 1.5;
}

/* ---- 标签 ---- */
.tag {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  display: inline-block;
  font-weight: 500;
}

.tag-green { background: var(--tag-green-bg); color: var(--tag-green-text); }
.tag-orange { background: var(--tag-orange-bg); color: var(--tag-orange-text); }
.tag-red { background: var(--tag-red-bg); color: var(--tag-red-text); }
.tag-gray { background: var(--tag-gray-bg); color: var(--tag-gray-text); }

/* 搜索高亮 */
mark.highlight {
  background: var(--mark-bg);
  color: var(--text);
  padding: 0 2px;
  border-radius: 2px;
}

/* ---- 骨架屏（品牌色脉动） ---- */
.skeleton {
  background: linear-gradient(90deg, var(--skeleton) 25%, var(--primary-light) 50%, var(--skeleton) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-sm);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-card {
  height: 72px;
  margin-bottom: 10px;
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
}
.skeleton-card::before {
  content: '🧊';
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 24px;
  opacity: 0.4;
}
.skeleton-card::after {
  content: '';
  position: absolute;
  left: 52px;
  right: 14px;
  top: 22px;
  height: 12px;
  background: linear-gradient(90deg, var(--skeleton) 25%, var(--primary-light) 50%, var(--skeleton) 75%);
  background-size: 200% 100%;
  border-radius: var(--radius-sm);
  animation: shimmer 1.5s ease-in-out infinite;
}
.skeleton-card .skeleton-sub {
  position: absolute;
  left: 52px;
  bottom: 22px;
  width: 40%;
  height: 10px;
  background: linear-gradient(90deg, var(--skeleton) 25%, var(--primary-light) 50%, var(--skeleton) 75%);
  background-size: 200% 100%;
  border-radius: var(--radius-sm);
  animation: shimmer 1.5s ease-in-out infinite;
}
.skeleton-line { height: 14px; margin-bottom: 8px; width: 60%; border-radius: var(--radius-sm); }
.skeleton-line:last-child { width: 40%; }

/* ---- 涟漪点击效果（直接作用在按钮上） ---- */
.btn, .btn-sm {
  position: relative;
  overflow: hidden;
}
.btn::after, .btn-sm::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--x, 50%) var(--y, 50%), rgba(255,255,255,0.3) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
  border-radius: inherit;
}
.btn:active::after, .btn-sm:active::after {
  opacity: 1;
  transition: opacity 0s;
}

/* ---- 状态页 ---- */
.loading-state, .error-state, .empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-secondary);
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.6;
}

.empty-state-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}

.empty-state-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* 新手引导提示框 */
.empty-state .tip-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
  margin-top: 16px;
  text-align: left;
  display: inline-block;
  min-width: 200px;
}

.empty-state .tip-card .tip-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.empty-state .tip-card .tip-item {
  font-size: 12px;
  color: var(--text-secondary);
  padding: 4px 0;
  display: flex;
  align-items: center;
  gap: 6px;
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 12px;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ---- 弹窗 ---- */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.4);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.15s ease;
}

.modal {
  background: var(--card-bg);
  border-radius: 14px;
  padding: 20px;
  width: 100%;
  max-width: 420px;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.modal-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 14px;
}

.form-group { margin-bottom: 12px; }

.form-label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 4px;
  display: block;
  font-weight: 500;
}

.form-row { display: flex; gap: 10px; }
.form-row .form-group { flex: 1; }

/* ---- Toast 通知 ---- */
.toast-container {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 300;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  pointer-events: none;
  max-width: 80%;
  width: auto;
}

.toast {
  background: var(--toast-bg);
  color: var(--toast-text);
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 13px;
  text-align: center;
  animation: toastIn 0.25s ease;
  pointer-events: auto;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
  word-break: break-word;
}

.toast.toast-success { background: var(--primary); }
.toast.toast-error { background: var(--danger); }
.toast.toast-warning { background: var(--warning); }

@keyframes toastIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---- 冰箱页 ---- */
.fridge-banner {
  background: var(--banner-bg);
  border: 1px solid var(--banner-border);
  border-radius: 10px;
  padding: 10px 14px;
  margin-bottom: 12px;
  font-size: 13px;
  color: var(--banner-text);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.fridge-banner .banner-actions { display: flex; gap: 6px; }
.fridge-banner .banner-actions .btn-sm { font-size: 11px; }

.ingredient-group { margin-bottom: 16px; }

.ingredient-group-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
  padding: 0 4px;
}

.ingredient-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 6px;
  transition: border-color 0.2s;
}

.ingredient-item.expiring {
  border-color: var(--danger);
  background: var(--danger-light);
}

.ingredient-name {
  font-weight: 500;
  font-size: 14px;
}

.ingredient-qty {
  font-size: 13px;
  color: var(--text-secondary);
}

.ingredient-actions { display: flex; gap: 4px; }

/* 批量添加区域 */
.batch-add-area {
  margin-bottom: 12px;
}

.batch-add-toggle {
  font-size: 12px;
  color: var(--primary);
  cursor: pointer;
  padding: 4px 0;
  display: inline-block;
  user-select: none;
}

.batch-add-toggle:hover { text-decoration: underline; }

.batch-add-panel {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  margin-top: 6px;
  display: none;
}

.batch-add-panel.open { display: block; }

.batch-add-hint {
  font-size: 11px;
  color: var(--text-tertiary);
  margin-top: 4px;
}

/* ---- 菜谱卡片 ---- */
.recipe-card {
  display: flex;
  gap: 12px;
  cursor: pointer;
}

.recipe-img {
  width: 72px;
  height: 72px;
  background: var(--border);
  border-radius: 8px;
  flex-shrink: 0;
  overflow: hidden;
}

.recipe-img img { width: 100%; height: 100%; object-fit: cover; }

.recipe-info { flex: 1; min-width: 0; }

.recipe-name {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
  line-height: 1.3;
}

.recipe-meta {
  font-size: 12px;
  color: var(--text-secondary);
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* 菜谱详情 */
.recipe-detail-ingredients { margin: 12px 0; }

.recipe-detail-ingredient {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
}

.recipe-detail-step {
  padding: 10px 0;
  font-size: 13px;
  line-height: 1.6;
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 10px;
}

.recipe-detail-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  font-size: 12px;
  flex-shrink: 0;
  margin-top: 2px;
}

.recipe-detail-step-content { flex: 1; }

/* ---- AI 推荐 ---- */
.recommend-header {
  text-align: center;
  padding: 16px 0;
}

.recommend-ingredients {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  margin: 12px 0;
}

.recommend-ingredient {
  background: var(--tag-green-bg);
  color: var(--tag-green-text);
  padding: 4px 10px;
  border-radius: 16px;
  font-size: 13px;
  font-weight: 500;
}

.recommend-result { margin-top: 16px; }

/* AI 结果卡片 - 流式渐进渲染 */
.ai-recipe-card {
  transition: opacity 0.3s;
}

.ai-recipe-card.loading-name { opacity: 0.6; }

/* ---- 做菜记录 ---- */
.log-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.log-recipe-name { font-weight: 500; font-size: 13px; }
.log-date { font-size: 11px; color: var(--text-secondary); }
.log-rating { color: #f59e0b; font-size: 13px; letter-spacing: 1px; }

/* 评分星星交互 */
.rating-stars {
  font-size: 24px;
  cursor: pointer;
  user-select: none;
  display: inline-flex;
  gap: 2px;
}

.rating-stars .star {
  color: #ddd;
  transition: color 0.15s, transform 0.1s;
}

.rating-stars .star.active { color: #f59e0b; }
.rating-stars .star:hover { transform: scale(1.2); }

/* ---- 动效偏好（前庭障碍友好） ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  #main-content { animation: none !important; }
}

/* ---- 内联校验 ---- */
.input:invalid, select.input:invalid {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.12);
}
.input:focus:invalid {
  box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.15);
}
.input.valid {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.12);
}
.validation-hint {
  font-size: 11px;
  color: var(--danger);
  margin-top: 2px;
  display: none;
}
.validation-hint.show { display: block; }

/* ---- 打印样式 ---- */
@media print {
  #header, #bottom-nav, .btn, .btn-sm { display: none !important; }
  #app { padding-bottom: 0; }
  .card { box-shadow: none; border: 1px solid #ddd; break-inside: avoid; }
  body { background: #fff; color: #000; }
}

/* ---- 辅助类 ---- */
.text-center { text-align: center; }
.text-sm { font-size: 12px; }
.text-muted { color: var(--text-secondary); }
.mt-4 { margin-top: 4px; }
.mt-8 { margin-top: 8px; }
.mt-12 { margin-top: 12px; }
.mb-8 { margin-bottom: 8px; }
.mb-12 { margin-bottom: 12px; }
.flex { display: flex; }
.flex-1 { flex: 1; }
.gap-4 { gap: 4px; }
.gap-8 { gap: 8px; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---- 收藏按钮 ---- */
.fav-btn {
  transition: transform 0.15s;
}
.fav-btn:hover { transform: scale(1.2); }
.fav-btn.fav-active { color: var(--fav-color) !important; }

/* ---- 底部导航 5 项适配 ---- */
#bottom-nav a { flex: 1; }
#bottom-nav .nav-label { font-size: 11px; font-weight: 500; }
@media (max-width: 420px) {
  #bottom-nav .nav-label { font-size: 10px; }
  .nav-icon { font-size: 18px; }
}

/* ---- 购物清单复选框 ---- */
#sl-list .card input[type="checkbox"]:checked + div div:first-child {
  text-decoration: line-through;
  color: var(--text-tertiary);
}

/* ---- 食谱图片收藏按钮位置 ---- */
.recipe-img { position: relative; }

/* ---- 冰箱仪表盘 ---- */
.fridge-dashboard {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
  margin-bottom: 14px;
}
.dashboard-stat {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 12px 8px;
  text-align: center;
}
.dashboard-stat-value {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
}
.dashboard-stat-label {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 2px;
}
.dashboard-stat.danger .dashboard-stat-value { color: var(--danger); }
.dashboard-stat.warning .dashboard-stat-value { color: var(--warning); }

/* ---- 健康度进度条 ---- */
.health-bar {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
  margin: 10px 0;
}
.health-bar-fill {
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--danger), var(--warning), var(--primary));
  transition: width 0.5s ease;
}

/* ---- 做菜热力图 ---- */
.heatmap {
  display: flex;
  gap: 3px;
  flex-wrap: wrap;
  padding: 12px 0;
}
.heatmap-cell {
  width: 12px;
  height: 12px;
  border-radius: 2px;
  background: var(--border);
}
.heatmap-cell.l1 { background: #bbf7d0; }
.heatmap-cell.l2 { background: #86efac; }
.heatmap-cell.l3 { background: #4ade80; }
.heatmap-cell.l4 { background: #22c55e; }
.heatmap-cell.l5 { background: #16a34a; }
[data-theme="dark"] .heatmap-cell.l1 { background: #1a3a2e; }
[data-theme="dark"] .heatmap-cell.l2 { background: #1a5a3e; }
[data-theme="dark"] .heatmap-cell.l3 { background: #166534; }
[data-theme="dark"] .heatmap-cell.l4 { background: #15803d; }
[data-theme="dark"] .heatmap-cell.l5 { background: #22c55e; }

/* ---- PWA 安装横幅 ---- */
.install-banner {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  color: #fff;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-radius: var(--radius-lg);
  margin-bottom: 12px;
  box-shadow: 0 2px 8px rgba(22,163,74,0.2);
}
.install-banner-text { flex: 1; font-size: 13px; }
.install-banner-close {
  background: rgba(255,255,255,0.2);
  border: none;
  color: #fff;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 14px;
}

/* ---- 分类建议下拉 ---- */
.category-suggest {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 10;
  max-height: 160px;
  overflow-y: auto;
  display: none;
}
.category-suggest.show { display: block; }
.category-suggest div {
  padding: 8px 12px;
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s;
}
.category-suggest div:hover { background: var(--primary-light); color: var(--primary); }

/* ---- 智能排序下拉 ---- */
.sort-select {
  font-size: 11px;
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card-bg);
  color: var(--text-secondary);
  cursor: pointer;
}