/* ============================================================
   Drinking Life - 全局样式 & 主题变量
   ============================================================ */

/* ---------- 亮色主题（默认） ---------- */
:root {
  --bg-primary: #f5f2ee;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-hover: #f0ebe4;
  --bg-input: #faf8f5;
  --bg-modal: #ffffff;
  --bg-overlay: rgba(0, 0, 0, 0.35);

  --text-primary: #1f1c18;
  --text-secondary: #6b6258;
  --text-muted: #a89f94;
  --text-inverse: #ffffff;

  --accent: #b07d4f;
  --accent-hover: #9a6b3f;
  --accent-light: #e8d9c8;
  --accent-glow: rgba(176, 125, 79, 0.25);

  --border: #e0d8ce;
  --border-focus: #b07d4f;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 999px;

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);

  --font-main: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
}

/* ---------- 暗色主题 ---------- */
body.dark {
  --bg-primary: #14120f;
  --bg-secondary: #1e1b18;
  --bg-card: #26221e;
  --bg-hover: #322d28;
  --bg-input: #2a2621;
  --bg-modal: #221f1b;
  --bg-overlay: rgba(0, 0, 0, 0.65);

  --text-primary: #f0ebe4;
  --text-secondary: #b5aa9d;
  --text-muted: #7a7167;
  --text-inverse: #14120f;

  --accent: #c99a6b;
  --accent-hover: #dbb080;
  --accent-light: #3d3228;
  --accent-glow: rgba(201, 154, 107, 0.3);

  --border: #3a342e;
  --border-focus: #c99a6b;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.55);
}

/* ============================================================
   基础重置 & 全局
   ============================================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* 注意：body 不能用 height:100%（内容会溢出该高度，
   会导致顶部全站顶栏 sticky 只能吸住一屏就滚走），
   改用 min-height 撑满首屏。 */
html {
  height: 100%;
}

body {
  font-family: var(--font-main);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  transition: background var(--transition-slow), color var(--transition-slow);
  min-height: 100vh;
  overflow-x: hidden;
}

/* 自定义滚动条 */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ============================================================
   主容器
   ============================================================ */
.app-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px 28px 60px;
  animation: fadeInUp 0.6s var(--transition-slow);
}

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

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

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

/* ============================================================
   主题切换按钮
   ============================================================ */
.theme-toggle {
  position: fixed;
  top: 20px;
  right: 24px;
  z-index: 1000;
  padding: 10px 18px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-full);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}

.theme-toggle:hover {
  background: var(--accent);
  color: var(--text-inverse);
  border-color: var(--accent);
  box-shadow: var(--shadow-md), 0 0 0 4px var(--accent-glow);
  transform: translateY(-2px);
}

.theme-toggle:active {
  transform: translateY(0) scale(0.96);
  box-shadow: var(--shadow-sm);
}

/* ============================================================
   1️⃣ 顶部标题区
   ============================================================ */
.top-header {
  text-align: center;
  padding: 32px 0 28px;
  animation: fadeInUp 0.5s var(--transition-slow) 0.05s both;
}

.main-title {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -1.5px;
  background: linear-gradient(135deg, var(--accent), var(--text-primary) 80%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.15;
  margin-bottom: 6px;
}

.author-line {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 500;
  letter-spacing: 0.3px;
}

.version-line {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 4px;
  font-weight: 400;
}

/* ============================================================
   云端同步状态条
   ============================================================ */
.cloud-status {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0 0 22px;
  padding: 10px 18px;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--border);
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.2px;
  color: var(--text-secondary);
  text-align: center;
  transition: all var(--transition);
}

.cloud-status:empty {
  display: none;
}

.cloud-status.online {
  border-color: rgba(74, 222, 128, 0.45);
  background: rgba(74, 222, 128, 0.10);
  color: #2f855a;
}

body.dark .cloud-status.online {
  color: #7ee2a8;
}

.cloud-status.offline {
  border-style: dashed;
}

.cloud-status.error {
  border-color: rgba(239, 68, 68, 0.45);
  background: rgba(239, 68, 68, 0.10);
  color: #c53030;
}

body.dark .cloud-status.error {
  color: #f8a5a5;
}

.cloud-status-text {
  line-height: 1.3;
}

.cloud-login-btn {
  padding: 5px 16px;
  border: 1.5px solid var(--accent);
  border-radius: var(--radius-full);
  background: var(--accent);
  color: var(--text-inverse);
  font: inherit;
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.cloud-login-btn:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px -8px var(--accent-glow);
}

.cloud-login-btn:active {
  transform: translateY(0) scale(0.97);
}

/* ============================================================
   2️⃣ 统计卡片区域
   ============================================================ */
.stats-section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  margin-bottom: 32px;
  animation: fadeInUp 0.5s var(--transition-slow) 0.1s both;
}

.stat-card {
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 14px 14px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  cursor: default;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  opacity: 0;
  transition: opacity var(--transition);
}

.stat-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.stat-card:hover::before {
  opacity: 1;
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.stat-value {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.3;
  transition: color var(--transition);
}

.stat-value .unit {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.stat-cny {
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 700;
  margin-top: 5px;
  letter-spacing: 0.3px;
}

/* 最爱品牌 / 单品 卡片微调 */
.stat-card .brand-fav,
.stat-card .item-fav {
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.4;
}

.stat-card .brand-fav span,
.stat-card .item-fav span {
  color: var(--accent);
}

/* 自定义统计卡片 */
.custom-stat-card {
  cursor: pointer;
  background: linear-gradient(135deg, var(--bg-card), var(--accent-light));
  border-color: var(--accent);
}

.custom-stat-card:hover {
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  color: var(--text-inverse);
  transform: translateY(-3px) scale(1.02);
}

.custom-stat-card:hover .stat-label,
.custom-stat-card:hover .stat-value,
.custom-stat-card:hover .stat-cny {
  color: var(--text-inverse);
}

.custom-stat-card:active {
  transform: translateY(0) scale(0.98);
}

/* ============================================================
   3️⃣ 操控区域
   ============================================================ */
.control-section {
  margin-bottom: 28px;
  animation: fadeInUp 0.5s var(--transition-slow) 0.15s both;
}

.filters-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-end;
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.filters-row:hover {
  box-shadow: var(--shadow-md);
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 100px;
  flex: 1;
}

.filter-group label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-muted);
  padding-left: 2px;
}

.filter-select,
.filter-input {
  width: 100%;
  padding: 9px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 0.88rem;
  font-family: inherit;
  transition: all var(--transition);
  outline: none;
  cursor: pointer;
}

.filter-select:hover,
.filter-input:hover {
  border-color: var(--accent);
  background: var(--bg-hover);
}

.filter-select:focus,
.filter-input:focus {
  border-color: var(--accent);
  background: var(--bg-card);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

.filter-select:disabled,
.filter-input:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  border-color: var(--border);
  background: var(--bg-primary);
}

.filter-select:disabled:hover {
  border-color: var(--border);
  background: var(--bg-primary);
}

/* 单品搜索式筛选 */
.search-filter-group {
  position: relative;
  min-width: 180px;
  flex: 1.5;
}

.suggestions-box {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: var(--bg-modal);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  max-height: 220px;
  overflow-y: auto;
  z-index: 200;
  display: none;
  animation: fadeIn 0.2s ease;
}

.suggestions-box.active {
  display: block;
}

.suggestions-box .suggestion-item {
  padding: 9px 14px;
  font-size: 0.85rem;
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition);
  border-bottom: 1px solid var(--border);
}

.suggestions-box .suggestion-item:last-child {
  border-bottom: none;
}

.suggestions-box .suggestion-item:hover,
.suggestions-box .suggestion-item.selected {
  background: var(--accent);
  color: var(--text-inverse);
  padding-left: 18px;
}

.suggestions-box .suggestion-empty {
  padding: 12px 14px;
  font-size: 0.82rem;
  color: var(--text-muted);
  text-align: center;
}

/* 操作按钮组 */
.action-buttons {
  display: flex;
  gap: 14px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.primary-btn,
.secondary-btn {
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition);
  border: 1.5px solid transparent;
  letter-spacing: 0.3px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.primary-btn {
  background: var(--accent);
  color: var(--text-inverse);
  border-color: var(--accent);
  box-shadow: 0 4px 12px var(--accent-glow);
}

.primary-btn:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--accent-glow);
}

.primary-btn:active {
  transform: translateY(0) scale(0.97);
  box-shadow: 0 2px 8px var(--accent-glow);
}

.secondary-btn {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.secondary-btn:hover {
  background: var(--bg-hover);
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.secondary-btn:active {
  transform: translateY(0) scale(0.97);
  box-shadow: var(--shadow-sm);
}

/* ============================================================
   4️⃣ 时间筛选区域
   ============================================================ */
.date-nav-section {
  margin-bottom: 28px;
  animation: fadeInUp 0.5s var(--transition-slow) 0.2s both;
}

.date-nav-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.date-nav-controls:hover {
  box-shadow: var(--shadow-md);
}

.arrow-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border);
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 1.2rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.arrow-btn:hover:not(:disabled) {
  background: var(--accent);
  color: var(--text-inverse);
  border-color: var(--accent);
  transform: scale(1.08);
  box-shadow: 0 4px 12px var(--accent-glow);
}

.arrow-btn:active:not(:disabled) {
  transform: scale(0.95);
}

.arrow-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  background: var(--bg-primary);
}

.date-selectors {
  display: flex;
  gap: 8px;
  flex: 1;
  min-width: 200px;
}

.date-select {
  flex: 1;
  padding: 9px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 0.88rem;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition);
  outline: none;
}

.date-select:hover:not(:disabled) {
  border-color: var(--accent);
  background: var(--bg-hover);
}

.date-select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

.date-select:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.clear-btn {
  padding: 9px 18px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.clear-btn:hover {
  background: #e05a5a;
  color: #fff;
  border-color: #e05a5a;
  box-shadow: 0 4px 12px rgba(224, 90, 90, 0.3);
  transform: translateY(-1px);
}

.clear-btn:active {
  transform: translateY(0) scale(0.97);
}

/* ============================================================
   5️⃣ 饮品记录区域
   ============================================================ */
.records-section {
  animation: fadeInUp 0.5s var(--transition-slow) 0.25s both;
}

.section-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: -0.3px;
}

.records-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
}

/* 空状态 */
.empty-records {
  grid-column: 1 / -1;
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
  font-size: 0.95rem;
  background: var(--bg-card);
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-md);
  animation: fadeIn 0.4s ease;
}

/* 饮品记录卡片（类正方形） */
.record-card {
  position: relative;
  aspect-ratio: 1 / 1;
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  animation: fadeInUp 0.35s ease both;
}

.record-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px) scale(1.02);
}

.record-card:active {
  transform: translateY(-1px) scale(0.99);
}

/* 多层卡片效果 */
.record-card.multi-layer::before,
.record-card.multi-layer::after {
  content: "";
  position: absolute;
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  transition: all var(--transition);
  z-index: -1;
}

.record-card.multi-layer::before {
  top: -5px;
  left: 5px;
  right: -5px;
  bottom: 5px;
  opacity: 0.6;
}

.record-card.multi-layer::after {
  top: -9px;
  left: 9px;
  right: -9px;
  bottom: 9px;
  opacity: 0.3;
}

.record-card.multi-layer:hover::before {
  top: -7px;
  left: 7px;
  right: -7px;
  bottom: 7px;
  opacity: 0.8;
}

.record-card.multi-layer:hover::after {
  top: -12px;
  left: 12px;
  right: -12px;
  bottom: 12px;
  opacity: 0.5;
}

/* 卡片内文字 */
.record-card .card-code {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -1px;
}

.record-card .card-date {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 600;
  margin-top: 2px;
}

.record-card .card-brand {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-top: 6px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.record-card .card-item {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.record-card .card-cups {
  position: absolute;
  top: 12px;
  right: 12px;
  background: none;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 800;
  padding: 0;
  border-radius: 0;
  box-shadow: none;
  letter-spacing: 0.2px;
}

/* ============================================================
   模态框 & 覆盖层
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-overlay);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-slow);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.modal-content {
  background: var(--bg-modal);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 90%;
  max-width: 640px;
  max-height: 85vh;
  overflow-y: auto;
  padding: 28px 32px;
  transform: scale(0.94) translateY(10px);
  transition: transform var(--transition-slow), opacity var(--transition-slow);
  opacity: 0;
  position: relative;
}

.modal-overlay.active .modal-content {
  transform: scale(1) translateY(0);
  opacity: 1;
}

.modal-content.wide {
  max-width: 820px;
}

/* 模态框内部标题 */
.modal-title {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

/* 模态框关闭按钮 */
.modal-close {
  position: absolute;
  top: 16px;
  right: 20px;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--border);
  background: var(--bg-input);
  color: var(--text-secondary);
  font-size: 1.1rem;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  background: #e05a5a;
  color: #fff;
  border-color: #e05a5a;
  transform: rotate(90deg) scale(1.1);
}

.modal-close:active {
  transform: rotate(90deg) scale(0.95);
}

/* ============================================================
   表单样式（通用）
   ============================================================ */
.form-group {
  margin-bottom: 14px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.form-group label {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: inherit;
  transition: all var(--transition);
  outline: none;
}

.form-group input:hover,
.form-group select:hover,
.form-group textarea:hover {
  border-color: var(--accent);
  background: var(--bg-hover);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  background: var(--bg-card);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

.form-group textarea {
  resize: vertical;
  min-height: 70px;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
  font-style: italic;
}

/* 表单行（多列） */
.form-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.form-row .form-group {
  flex: 1;
  min-width: 140px;
}

/* 表单底部按钮 */
.form-actions {
  display: flex;
  gap: 12px;
  margin-top: 22px;
  justify-content: flex-end;
  flex-wrap: wrap;
}

/* 复选框样式 */
.checkbox-group {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 12px 0;
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.checkbox-group:hover {
  border-color: var(--accent);
  background: var(--bg-hover);
}

.checkbox-group input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
  cursor: pointer;
  flex-shrink: 0;
}

.checkbox-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  margin: 0;
}

.checkbox-group.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  border-color: var(--border);
}

.checkbox-group.disabled input[type="checkbox"] {
  cursor: not-allowed;
}

/* ============================================================
   标签式多选（加料）
   ============================================================ */
.tags-container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 8px 0;
  min-height: 40px;
}

.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--border);
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  user-select: none;
}

.tag-chip:hover {
  border-color: var(--accent);
  background: var(--bg-hover);
  transform: translateY(-1px);
}

.tag-chip.selected {
  background: var(--accent);
  color: var(--text-inverse);
  border-color: var(--accent);
  box-shadow: 0 2px 8px var(--accent-glow);
}

.tag-chip.selected:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.tag-chip:active {
  transform: scale(0.94);
}

/* 标签输入框 */
.tag-input-wrapper {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

.tag-input {
  flex: 1;
  padding: 8px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 0.85rem;
  font-family: inherit;
  transition: all var(--transition);
  outline: none;
}

.tag-input:focus {
  border-color: var(--accent);
  background: var(--bg-card);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

.tag-add-btn {
  padding: 8px 16px;
  border: 1.5px solid var(--accent);
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: var(--text-inverse);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.tag-add-btn:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--accent-glow);
}

.tag-add-btn:active {
  transform: scale(0.96);
}

/* ============================================================
   商品库样式
   ============================================================ */
.lib-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  border-bottom: 2px solid var(--border);
  padding-bottom: 12px;
}

.lib-tab {
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  border: 1.5px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
}

.lib-tab:hover {
  color: var(--accent);
  background: var(--bg-hover);
}

.lib-tab.active {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-light);
}

.lib-toolbar {
  display: flex;
  gap: 12px;
  margin-bottom: 18px;
  flex-wrap: wrap;
  align-items: center;
}

.lib-toolbar input,
.lib-toolbar select {
  flex: 1;
  min-width: 160px;
  padding: 9px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 0.88rem;
  font-family: inherit;
  transition: all var(--transition);
  outline: none;
}

.lib-toolbar input:focus,
.lib-toolbar select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

.lib-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
  max-height: 50vh;
  overflow-y: auto;
  padding-right: 4px;
}

/* 品牌 / 单品卡片 */
.lib-card {
  position: relative;
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 8px;
  box-shadow: var(--shadow-sm);
  animation: fadeInUp 0.3s ease both;
}

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

.lib-card:active {
  transform: translateY(0) scale(0.98);
}

.lib-card .lib-card-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  padding-right: 32px;
  word-break: break-word;
}

.lib-card .lib-card-detail {
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.4;
  word-break: break-word;
}

.lib-card .lib-card-detail strong {
  color: var(--text-muted);
  font-weight: 600;
}

.lib-card .lib-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  border: 1px solid var(--border);
  background: var(--bg-input);
}

.lib-card .lib-card-icon-placeholder {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  border: 1.5px dashed var(--border);
  background: var(--bg-input);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--text-muted);
}

/* 删除按钮 */
.lib-delete-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--border);
  background: var(--bg-input);
  color: var(--text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 5;
}

.lib-delete-btn:hover {
  background: #e05a5a;
  color: #fff;
  border-color: #e05a5a;
  transform: scale(1.15);
  box-shadow: 0 4px 12px rgba(224, 90, 90, 0.35);
}

.lib-delete-btn:active {
  transform: scale(0.95);
}

/* ============================================================
   自定义统计弹窗
   ============================================================ */
.custom-stats-filters {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: flex-end;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1.5px solid var(--border);
}

.custom-stats-filters .form-group {
  flex: 1;
  min-width: 110px;
}

.custom-stats-filters .filter-actions {
  display: flex;
  gap: 8px;
  align-items: flex-end;
}

.custom-stats-content {
  margin-bottom: 24px;
}

.custom-stats-content .form-group {
  max-width: 260px;
}

.custom-stats-result {
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-top: 16px;
}

.custom-stats-result .result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.92rem;
}

.custom-stats-result .result-row:last-child {
  border-bottom: none;
}

.custom-stats-result .result-label {
  color: var(--text-muted);
  font-weight: 600;
}

.custom-stats-result .result-value {
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.05rem;
}

.custom-stats-result .result-value.accent {
  color: var(--accent);
  font-size: 1.15rem;
}

/* ============================================================
   加载遮罩
   ============================================================ */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-overlay);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3000;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.loading-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 768px) {
  .app-container {
    padding: 16px 14px 40px;
  }

  .main-title {
    font-size: 2.1rem;
  }

  .stats-section {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .stat-card {
    padding: 12px 10px;
  }

  .stat-value {
    font-size: 1.1rem;
  }

  .filters-row {
    flex-direction: column;
    align-items: stretch;
  }

  .filter-group {
    min-width: unset;
  }

  .action-buttons {
    flex-direction: column;
  }

  .primary-btn,
  .secondary-btn {
    width: 100%;
    justify-content: center;
  }

  .date-nav-controls {
    flex-direction: column;
    align-items: stretch;
  }

  .date-selectors {
    flex-direction: row;
  }

  .records-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 10px;
  }

  .record-card {
    padding: 12px;
  }

  .record-card .card-code {
    font-size: 1.2rem;
  }

  .modal-content {
    padding: 20px 18px;
    width: 95%;
  }

  .lib-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    flex-direction: column;
    gap: 0;
  }

  .custom-stats-filters {
    flex-direction: column;
  }

  .theme-toggle {
    top: 12px;
    right: 12px;
    padding: 8px 14px;
    font-size: 0.78rem;
  }
}

@media (max-width: 480px) {
  .stats-section {
    grid-template-columns: 1fr 1fr;
  }

  .main-title {
    font-size: 1.7rem;
  }

  .records-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ============================================================
   动画辅助
   ============================================================ */
.fade-enter {
  animation: fadeInUp 0.4s ease both;
}

.fade-exit {
  animation: fadeOutDown 0.3s ease both;
}

.date-nav-controls {
  /* 原有样式保留 */
  flex-wrap: wrap;
}

.date-nav-controls .search-filter-group {
  position: relative;
}

/* ============================================================
   记录卡片 hover 删除按钮
   ============================================================ */
.record-delete-btn {
  position: absolute;
  top: 10px;
  left: 10px;
  width: 26px;
  height: 26px;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--border);
  background: var(--bg-card);
  color: var(--text-muted);
  font-size: 0.75rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.8);
  transition: all var(--transition);
  z-index: 6;
}

.record-card:hover .record-delete-btn {
  opacity: 1;
  transform: scale(1);
}

.record-delete-btn:hover {
  background: #e05a5a;
  color: #fff;
  border-color: #e05a5a;
  transform: scale(1.15);
  box-shadow: 0 4px 12px rgba(224, 90, 90, 0.35);
}

/* ============================================================
   底部功能按钮
   ============================================================ */
.bottom-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 40px;
  padding-bottom: 20px;
  flex-wrap: wrap;
}

.bottom-action-btn {
  min-width: 180px;
  justify-content: center;
  letter-spacing: 1px;
}

.bottom-action-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.bottom-action-btn:disabled:hover {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border);
  transform: none;
  box-shadow: var(--shadow-sm);
}

/* ============================================================
   独立弹层通用头部
   （「高级统计」「问问 AI」两个覆盖层共用）
   ============================================================ */
.panel-close {
  position: absolute;
  top: 14px;
  right: 16px;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--border);
  background: var(--bg-input);
  color: var(--text-secondary);
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.panel-close:hover {
  background: #e05a5a;
  color: #fff;
  border-color: #e05a5a;
  transform: rotate(90deg) scale(1.1);
}

.panel-title {
  font-size: 1.7rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--accent), var(--text-primary) 80%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 6px;
}

.panel-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 600;
  margin-bottom: 22px;
}

/* 卡片价格 */
.record-card .card-price {
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--accent);
  margin-top: 4px;
  letter-spacing: 0.2px;
}

.record-card .card-price-empty {
  color: var(--text-muted);
  font-weight: 600;
}

/* ============================================================
   堆叠卡片组（展开态保持正方形，不占整行）
   ============================================================ */

/* 收起态：单卡 + 层叠视觉 */
.stack-group.collapsed {
  position: relative;
  aspect-ratio: 1 / 1;
  cursor: pointer;
}

.stack-group.collapsed::before,
.stack-group.collapsed::after {
  content: "";
  position: absolute;
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  transition: all var(--transition);
  z-index: 0;
}
.stack-group.collapsed::before {
  top: -5px; left: 5px; right: -5px; bottom: 5px;
  opacity: 0.6;
}
.stack-group.collapsed::after {
  top: -9px; left: 9px; right: -9px; bottom: 9px;
  opacity: 0.3;
}
.stack-group.collapsed:hover::before { top: -7px; left: 7px; right: -7px; bottom: 7px; opacity: 0.8; }
.stack-group.collapsed:hover::after  { top: -12px; left: 12px; right: -12px; bottom: 12px; opacity: 0.5; }

.stack-group.collapsed .record-card {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  aspect-ratio: unset;
}

/* 收起态计数角标 */
.stack-group.collapsed .stack-count {
  position: absolute;
  top: -8px;
  right: -8px;
  z-index: 3;
  background: var(--accent);
  color: var(--text-inverse);
  font-size: 0.72rem;
  font-weight: 800;
  padding: 3px 9px;
  border-radius: var(--radius-full);
  box-shadow: 0 2px 8px var(--accent-glow);
}

/* 展开态的每张卡片：外层包一层，让卡片自己撑满正方形 */
.stack-expanded-item {
  position: relative;
  aspect-ratio: 1 / 1;
  animation: fadeInUp 0.3s ease both;
}
.stack-expanded-item .record-card {
  width: 100%;
  height: 100%;
  aspect-ratio: unset;
}

/* 收起按钮：与卡片同尺寸的正方形网格项 */
.stack-collapse-btn {
  aspect-ratio: 1 / 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-input);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition);
  animation: fadeInUp 0.3s ease both;
}
.stack-collapse-btn .stack-collapse-icon {
  font-size: 1.3rem;
  color: var(--accent);
  transition: transform var(--transition);
}
.stack-collapse-btn:hover {
  background: var(--accent);
  color: var(--text-inverse);
  border-color: var(--accent);
  border-style: solid;
  box-shadow: 0 6px 18px var(--accent-glow);
  transform: translateY(-2px);
}
.stack-collapse-btn:hover .stack-collapse-icon {
  color: var(--text-inverse);
  transform: translateY(-2px);
}
.stack-collapse-btn:active {
  transform: translateY(0) scale(0.96);
}

/* ============================================================
   高级统计容器
   ============================================================ */
.advanced-stats-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-overlay);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2400;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-slow);
}

.advanced-stats-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.advanced-stats-content {
  position: relative;
  background: var(--bg-modal);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 94%;
  max-width: 980px;
  max-height: 88vh;
  overflow-y: auto;
  padding: 28px 32px;
  transform: scale(0.94) translateY(12px);
  transition: transform var(--transition-slow), opacity var(--transition-slow);
  opacity: 0;
}

.advanced-stats-overlay.active .advanced-stats-content {
  transform: scale(1) translateY(0);
  opacity: 1;
}

/* ============================================================
   高级统计 - 内部区块
   ============================================================ */
.adv-stats-section {
  margin-bottom: 26px;
  padding-bottom: 20px;
  border-bottom: 1.5px dashed var(--border);
}
.adv-stats-section:last-of-type {
  border-bottom: none;
  margin-bottom: 8px;
  padding-bottom: 0;
}

.adv-stats-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.2px;
  margin-bottom: 12px;
}

.adv-stats-toolbar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 14px;
}

/* 趋势图容器 */
.adv-stats-chart-wrap {
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 10px 8px;
  min-height: 200px;
  overflow: hidden;
}

/* ============================================================
   日历热力图
   ============================================================ */
.adv-heatmap-wrap {
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  overflow-x: auto;
}

.adv-heatmap-grid {
  display: grid;
  grid-auto-flow: column;
  grid-template-rows: repeat(7, 12px);
  grid-auto-columns: 12px;
  gap: 3px;
  justify-content: start;
  padding-bottom: 6px;
}

.adv-heat-cell {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  background: var(--border);
  transition: transform 0.15s ease;
}

.adv-heat-cell.empty {
  background: transparent;
  pointer-events: none;
}

.adv-heat-cell.level-0 {
  background: var(--border);
  opacity: 0.4;
}
.adv-heat-cell.level-1 {
  background: var(--accent);
  opacity: 0.28;
}
.adv-heat-cell.level-2 {
  background: var(--accent);
  opacity: 0.5;
}
.adv-heat-cell.level-3 {
  background: var(--accent);
  opacity: 0.75;
}
.adv-heat-cell.level-4 {
  background: var(--accent);
  opacity: 1;
}

.adv-heat-cell:not(.empty):hover {
  transform: scale(1.3);
  outline: 1.5px solid var(--accent-hover);
  outline-offset: 1px;
}

.adv-heatmap-legend {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  font-size: 0.72rem;
  color: var(--text-muted);
}
.adv-heatmap-legend .adv-heat-cell {
  width: 12px;
  height: 12px;
  cursor: default;
}
.adv-heatmap-legend .adv-heat-cell:hover {
  transform: none;
  outline: none;
}

/* ============================================================
   同比 / 环比 & 戒断统计 卡片
   ============================================================ */
.adv-compare-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
}

.adv-compare-card {
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  transition: all var(--transition);
}
.adv-compare-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.adv-compare-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.adv-compare-value {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.25;
}
.adv-compare-value.accent {
  color: var(--accent);
}

.adv-compare-sub {
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-top: 5px;
  font-weight: 600;
  word-break: break-word;
}

/* ============================================================
   月度预算
   ============================================================ */
.adv-budget-bar {
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px 20px;
}

.adv-budget-info {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 0.88rem;
  color: var(--text-secondary);
  font-weight: 600;
  margin-bottom: 12px;
}
.adv-budget-info strong {
  font-size: 1.4rem;
  font-weight: 800;
}
.adv-budget-info strong.accent {
  color: var(--accent);
}

.adv-budget-track {
  width: 100%;
  height: 12px;
  background: var(--border);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.adv-budget-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 0.5s ease, background 0.3s ease;
}

.adv-budget-tip {
  margin-top: 10px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  font-weight: 600;
}

/* ============================================================
   高级统计 - 响应式
   ============================================================ */
@media (max-width: 768px) {
  .advanced-stats-content {
    padding: 20px 18px;
    width: 96%;
    max-height: 90vh;
  }
  .adv-stats-chart-wrap {
    padding: 10px 6px 6px;
  }
  .adv-compare-grid {
    grid-template-columns: 1fr;
  }
  .adv-heatmap-grid {
    grid-template-rows: repeat(7, 10px);
    grid-auto-columns: 10px;
    gap: 2px;
  }
  .adv-heat-cell {
    width: 10px;
    height: 10px;
    border-radius: 2px;
  }
}

.adv-heatmap-info {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
  padding: 6px 10px;
  margin-bottom: 10px;
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  min-height: 30px;
  display: flex;
  align-items: center;
}

/* ============================================================
   AI 自然语言查询容器
   ============================================================ */
.ask-ai-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-overlay);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2450;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-slow);
}

.ask-ai-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.ask-ai-content {
  position: relative;
  background: var(--bg-modal);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 94%;
  max-width: 760px;
  max-height: 88vh;
  overflow-y: auto;
  padding: 28px 32px;
  transform: scale(0.94) translateY(12px);
  transition: transform var(--transition-slow), opacity var(--transition-slow);
  opacity: 0;
}

.ask-ai-overlay.active .ask-ai-content {
  transform: scale(1) translateY(0);
  opacity: 1;
}

.ask-ai-title {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 4px;
  letter-spacing: -0.3px;
}

.ask-ai-subtitle {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 18px;
}

.ask-ai-input-row {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
}

.ask-ai-input {
  flex: 1;
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 0.92rem;
  font-family: inherit;
  outline: none;
  transition: all var(--transition);
}
.ask-ai-input:focus {
  border-color: var(--accent);
  background: var(--bg-card);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

.ask-ai-examples {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.ask-ai-example-chip {
  padding: 6px 14px;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--border);
  background: var(--bg-input);
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}
.ask-ai-example-chip:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--bg-hover);
  transform: translateY(-1px);
}

.ask-ai-answer {
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-primary);
  white-space: pre-wrap;
  word-break: break-word;
  min-height: 60px;
}

.ask-ai-answer.placeholder {
  color: var(--text-muted);
  font-style: italic;
}

.ask-ai-answer .accent {
  color: var(--accent);
  font-weight: 800;
}

.ask-ai-status {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 10px;
  text-align: right;
}

@media (max-width: 768px) {
  .ask-ai-content {
    padding: 20px 18px;
    width: 96%;
  }
  .ask-ai-input-row {
    flex-direction: column;
  }
}

/* ============================================================
   开发者设置按钮
   ============================================================ */
.dev-settings-btn {
  position: fixed;
  top: 20px;
  left: 24px;
  z-index: 1000;
  padding: 9px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-full);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.6px;
  font-family: inherit;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}
.dev-settings-btn:hover {
  background: var(--accent);
  color: var(--text-inverse);
  border-color: var(--accent);
  box-shadow: var(--shadow-md), 0 0 0 4px var(--accent-glow);
  transform: translateY(-2px);
}
.dev-settings-btn:active {
  transform: translateY(0) scale(0.96);
}

@media (max-width: 768px) {
  .dev-settings-btn {
    top: 12px;
    left: 12px;
    padding: 7px 12px;
    font-size: 0.72rem;
  }
  .dev-settings-btn span {
    display: none;
  }
}

/* ============================================================
   全站顶栏集成（shared/site-header.css）
   ------------------------------------------------------------
   页面顶部现在是站点级顶栏（高 64px，悬停展开到 96px），
   原本固定在左上 / 右上的两个悬浮按钮需要下移，避免压在顶栏上。
   ============================================================ */
.theme-toggle,
.dev-settings-btn {
  top: 100px;
}

@media (max-width: 900px) {
  /* 窄屏顶栏会堆叠成多行、高度不固定，
     因此把两个悬浮按钮改挂到屏幕左下 / 右下角，
     与顶栏彻底解耦（左侧 DEV、右侧主题切换）。 */
  .theme-toggle,
  .dev-settings-btn {
    top: auto;
    bottom: 18px;
  }

  .theme-toggle {
    right: 14px;
  }

  .dev-settings-btn {
    left: 14px;
  }
}