/* ============================================
   毛玻璃导航仪表盘 - 样式表
   ============================================ */

/* --- CSS 变量 (主题) --- */
:root {
  /* 暗色主题 */
  --bg-primary: #0a1a0a;
  --bg-secondary: #122a12;
  --bg-gradient: linear-gradient(120deg, #1a3a1a 0%, #0a2a10 100%);
  --glass-bg: rgba(255, 255, 255, 0.04);
  --glass-bg-hover: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-border-hover: rgba(255, 255, 255, 0.15);
  --glass-blur: 20px;
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  --text-primary: #e8e8f0;
  --text-secondary: #a0a0b8;
  --text-muted: #606078;
  --accent: #818cf8;
  --accent-hover: #a5b4fc;
  --accent-glow: rgba(129, 140, 248, 0.3);
  --danger: #ef4444;
  --danger-hover: #f87171;
  --success: #10b981;
  --warning: #f59e0b;
  --card-header-bg: rgba(255, 255, 255, 0.03);
  --input-bg: rgba(255, 255, 255, 0.06);
  --input-border: rgba(255, 255, 255, 0.1);
  --input-focus: rgba(129, 140, 248, 0.5);
  --overlay-bg: rgba(0, 0, 0, 0.6);
  --scrollbar-thumb: rgba(255, 255, 255, 0.1);
  --scrollbar-track: transparent;
  --drag-ghost: rgba(129, 140, 248, 0.15);
  --particle-color: rgba(255, 255, 255, 0.15);
  --particle-line: rgba(255, 255, 255, 0.06);
}

[data-theme="light"] {
  --bg-primary: #f8fbff;
  --bg-secondary: #eef7ff;
  --bg-gradient: 
    radial-gradient(circle at 12% 18%, rgba(125, 211, 252, 0.32), transparent 30%),
    radial-gradient(circle at 78% 10%, rgba(196, 181, 253, 0.28), transparent 28%),
    linear-gradient(135deg, rgb(248, 251, 255), rgb(238, 247, 255) 38%, rgb(246, 240, 255) 68%, rgb(238, 253, 248));
  --glass-bg: rgba(255, 255, 255, 0.55);
  --glass-bg-hover: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.6);
  --glass-border-hover: rgba(255, 255, 255, 0.8);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  --text-primary: #1a1a2e;
  --text-secondary: #4a4a6a;
  --text-muted: #8a8aa0;
  --accent: #6366f1;
  --accent-hover: #818cf8;
  --accent-glow: rgba(99, 102, 241, 0.25);
  --card-header-bg: rgba(255, 255, 255, 0.3);
  --input-bg: rgba(255, 255, 255, 0.5);
  --input-border: rgba(255, 255, 255, 0.6);
  --input-focus: rgba(99, 102, 241, 0.5);
  --overlay-bg: rgba(0, 0, 0, 0.3);
  --scrollbar-thumb: rgba(0, 0, 0, 0.15);
  --drag-ghost: rgba(99, 102, 241, 0.1);
  --particle-color: rgba(255, 255, 255, 0.4);
  --particle-line: rgba(255, 255, 255, 0.15);
}

/* --- 重置 & 基础 --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-gradient);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background 0.5s ease;
}

/* 自定义滚动条 */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
}
::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--glass-border-hover);
}

/* --- 粒子画布 --- */
#particles-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* --- 毛玻璃基础类 --- */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  box-shadow: var(--glass-shadow);
  transition: all 0.3s ease;
}

.glass-card:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
}

/* --- 顶部导航栏 --- */
.glass-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: var(--glass-bg);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  gap: 16px;
}

.header-left {
  flex-shrink: 0;
}

.logo {
  font-size: 1.3rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}

.header-center {
  flex: 1;
  max-width: 480px;
}

.search-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 12px;
  width: 18px;
  height: 18px;
  color: var(--text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 10px 16px 10px 40px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 0.9rem;
  outline: none;
  transition: all 0.3s ease;
}

.search-input::placeholder {
  color: var(--text-muted);
}

.search-input:focus {
  border-color: var(--input-focus);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* --- 时钟 Widget --- */
.widget-clock {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 4px 12px;
  min-width: 90px;
}

.clock-time {
  font-size: 1.1rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--text-primary);
}

.clock-date {
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* --- 天气 Widget --- */
.widget-weather {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.3s ease;
  user-select: none;
}

.widget-weather:hover {
  border-color: var(--glass-border-hover);
  background: var(--glass-bg-hover);
}

.weather-icon {
  font-size: 1.1rem;
}

.weather-text {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

/* --- 按钮样式 --- */
.btn-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 10px;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-icon:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
  transform: translateY(-1px);
}

.btn-primary {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--accent);
  border: none;
  border-radius: 10px;
  color: #fff;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 4px 16px var(--accent-glow);
  transform: translateY(-1px);
}

.btn-secondary {
  padding: 8px 16px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 10px;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-secondary:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
  color: var(--text-primary);
}

.btn-danger {
  padding: 8px 16px;
  background: var(--danger);
  border: none;
  border-radius: 10px;
  color: #fff;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-danger:hover {
  background: var(--danger-hover);
  box-shadow: 0 4px 16px rgba(239, 68, 68, 0.3);
}

.btn-text {
  padding: 4px 8px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.8rem;
  cursor: pointer;
  transition: color 0.2s;
}

.btn-text:hover {
  color: var(--text-secondary);
}

.btn-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.4rem;
  cursor: pointer;
  border-radius: 8px;
  transition: all 0.2s;
}

.btn-close:hover {
  background: var(--glass-bg-hover);
  color: var(--text-primary);
}

/* --- 主题切换 --- */
.theme-toggle {
  position: relative;
  overflow: hidden;
}

.theme-icon-dark,
.theme-icon-light {
  position: absolute;
  transition: all 0.4s ease;
}

[data-theme="dark"] .theme-icon-dark {
  opacity: 1;
  transform: translateY(0) rotate(0);
}

[data-theme="dark"] .theme-icon-light {
  opacity: 0;
  transform: translateY(20px) rotate(90deg);
}

[data-theme="light"] .theme-icon-dark {
  opacity: 0;
  transform: translateY(-20px) rotate(-90deg);
}

[data-theme="light"] .theme-icon-light {
  opacity: 1;
  transform: translateY(0) rotate(0);
}

/* --- 仪表盘网格 --- */
.dashboard {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
  padding: 24px;
  max-width: 1600px;
  margin: 0 auto;
}

/* --- 分类卡片 --- */
.category-card {
  position: relative;
  display: flex;
  flex-direction: column;
  max-height: 500px;
  transition: all 0.3s ease;
}

.category-card.sortable-ghost {
  opacity: 0.4;
  background: var(--drag-ghost);
}

.category-card.sortable-drag {
  box-shadow: 0 12px 40px rgba(99, 102, 241, 0.3);
  transform: rotate(2deg) scale(1.02);
}

.category-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  background: var(--card-header-bg);
  border-bottom: 1px solid var(--glass-border);
  border-radius: 16px 16px 0 0;
  cursor: grab;
  user-select: none;
}

.category-header:active {
  cursor: grabbing;
}

.category-title-area {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  min-width: 0;
}

.category-emoji {
  font-size: 1.2rem;
  flex-shrink: 0;
}

.category-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.category-count {
  font-size: 0.7rem;
  color: var(--text-muted);
  background: var(--input-bg);
  padding: 2px 8px;
  border-radius: 10px;
  flex-shrink: 0;
}

.category-actions {
  display: flex;
  gap: 2px;
  opacity: 0;
  transition: opacity 0.2s;
}

.category-card:hover .category-actions {
  opacity: 1;
}

.category-action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: none;
  border: none;
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s;
}

.category-action-btn:hover {
  background: var(--glass-bg-hover);
  color: var(--text-primary);
}

.category-action-btn.danger:hover {
  color: var(--danger);
}

/* --- 网站列表 --- */
.website-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
  min-height: 60px;
}

.website-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  position: relative;
}

.website-item:hover {
  background: var(--glass-bg-hover);
}

.website-item.sortable-ghost {
  opacity: 0.3;
  background: var(--drag-ghost);
}

.website-item.sortable-chosen {
  background: var(--glass-bg-hover);
}

.website-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--input-bg);
  overflow: hidden;
}

.website-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px;
}

.website-icon .favicon-fallback {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
}

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

.website-name {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.website-desc {
  font-size: 0.72rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 1px;
}

.website-actions {
  display: flex;
  gap: 2px;
  opacity: 0;
  transition: opacity 0.2s;
  flex-shrink: 0;
}

.website-item:hover .website-actions {
  opacity: 1;
}

.website-action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: none;
  border: none;
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 0.7rem;
  cursor: pointer;
  transition: all 0.2s;
}

.website-action-btn:hover {
  background: var(--glass-bg-hover);
  color: var(--text-primary);
}

.website-action-btn.danger:hover {
  color: var(--danger);
}

/* --- 添加网站按钮 --- */
.add-website-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px;
  margin: 4px 8px 8px;
  background: none;
  border: 1px dashed var(--glass-border);
  border-radius: 10px;
  color: var(--text-muted);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s;
}

.add-website-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

/* --- 搜索高亮 --- */
.search-highlight {
  background: rgba(99, 102, 241, 0.3);
  border-radius: 2px;
  padding: 0 1px;
}

.website-item.search-hidden {
  display: none;
}

.category-card.search-empty {
  opacity: 0.4;
}

/* --- 空状态 --- */
.empty-state {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  text-align: center;
}

.empty-icon {
  font-size: 4rem;
  margin-bottom: 16px;
  animation: float 3s ease-in-out infinite;
}

.empty-state p {
  color: var(--text-muted);
  font-size: 1rem;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* --- 弹窗 --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--overlay-bg);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  width: 90%;
  max-width: 480px;
  max-height: 85vh;
  overflow-y: auto;
  transform: translateY(20px) scale(0.95);
  transition: transform 0.3s ease;
}

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

.modal-small {
  max-width: 380px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px 0;
}

.modal-header h2 {
  font-size: 1.1rem;
  font-weight: 600;
}

.modal-body {
  padding: 20px 24px;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 0 24px 20px;
}

/* --- 表单 --- */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group input[type="text"],
.form-group input[type="url"],
.form-group input[type="password"] {
  width: 100%;
  padding: 10px 14px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 0.9rem;
  outline: none;
  transition: all 0.3s ease;
}

.form-group input:focus {
  border-color: var(--input-focus);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-group .hint {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* --- Emoji 选择器 --- */
.emoji-picker {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.emoji-option {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1.2rem;
  transition: all 0.2s;
  border: 2px solid transparent;
}

.emoji-option:hover {
  background: var(--glass-bg-hover);
  transform: scale(1.15);
}

.emoji-option.selected {
  border-color: var(--accent);
  background: var(--accent-glow);
}

/* --- 图标上传 --- */
.icon-upload-area {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px;
  background: var(--input-bg);
  border: 1px dashed var(--input-border);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.icon-upload-area:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
}

.icon-preview {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: var(--glass-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
}

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

.icon-placeholder {
  font-size: 1.5rem;
  opacity: 0.5;
}

.icon-upload-info p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.icon-upload-info .hint {
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* --- 快捷键面板 --- */
.shortcuts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.shortcut-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
}

.shortcut-item kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 28px;
  padding: 0 8px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 6px;
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-primary);
  box-shadow: 0 2px 0 var(--glass-border);
}

.shortcut-item span {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

/* --- Toast 通知 --- */
.toast-container {
  position: fixed;
  top: 80px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  color: var(--text-primary);
  font-size: 0.85rem;
  animation: toastIn 0.3s ease, toastOut 0.3s ease 2.7s forwards;
  min-width: 200px;
  max-width: 360px;
}

.toast.success { border-left: 3px solid var(--success); }
.toast.error   { border-left: 3px solid var(--danger); }
.toast.info    { border-left: 3px solid var(--accent); }

.toast-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateX(0); }
  to   { opacity: 0; transform: translateX(40px); }
}

/* --- 拖拽占位 --- */
.sortable-placeholder {
  border: 2px dashed var(--accent);
  border-radius: 12px;
  background: var(--accent-glow);
  min-height: 60px;
}

/* --- 响应式 --- */
@media (max-width: 1024px) {
  .dashboard {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
    padding: 16px;
  }
}

@media (max-width: 768px) {
  .glass-header {
    flex-wrap: wrap;
    padding: 10px 16px;
    gap: 10px;
  }

  .header-left {
    order: 1;
  }

  .header-right {
    order: 2;
    gap: 8px;
  }

  .header-center {
    order: 3;
    flex: 1 1 100%;
    max-width: none;
  }

  .widget-clock {
    display: none;
  }

  .add-category-btn span:last-child {
    display: none;
  }

  .dashboard {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 12px;
  }

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

@media (max-width: 480px) {
  .logo {
    font-size: 1.1rem;
  }

  .widget-weather {
    display: none;
  }

  .shortcuts-btn {
    display: none;
  }
}

/* ==================== 设置弹窗样式 ==================== */
.modal-large {
  max-width: 600px;
  max-height: 85vh;
}

.modal-large .modal-body {
  overflow-y: auto;
  max-height: calc(85vh - 140px);
}

.settings-section {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--glass-border);
}

.settings-section:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.settings-section h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.settings-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.input-with-btn {
  display: flex;
  gap: 8px;
}

.input-with-btn input {
  flex: 1;
}

.input-with-btn .btn-secondary {
  white-space: nowrap;
}

.form-actions {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

/* ==================== 背景图设置样式 ==================== */
.bg-preview-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.bg-preview {
  width: 100%;
  height: 120px;
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-gradient);
  border: 2px dashed var(--glass-border);
  position: relative;
}

.bg-preview.has-image {
  background-size: cover;
  background-position: center;
  border-style: solid;
}

.bg-preview-placeholder {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.bg-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

.bg-effect-options {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.radio-option {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.radio-option input[type="radio"] {
  accent-color: var(--accent);
}

.range-value {
  display: inline-block;
  min-width: 40px;
  text-align: right;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* ==================== 数据管理样式 ==================== */
.data-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.data-actions .btn-primary,
.data-actions .btn-secondary {
  flex: 1;
  min-width: 140px;
  justify-content: center;
}

/* ==================== 自定义背景支持 ==================== */
/* ==================== 自定义背景支持 ==================== */
body.custom-bg {
  background-image: none !important;
}

body.custom-bg::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: var(--custom-bg-image);
  background-size: var(--custom-bg-size, cover);
  background-position: center;
  background-repeat: var(--custom-bg-repeat, no-repeat);
  z-index: -2;
}

body.custom-bg::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-gradient);
  opacity: var(--custom-bg-opacity, 0.5);
  z-index: -1;
}