/* 亮色主题 - 暖奶油色调，柔和光晕，清晰视觉层次 */
[data-theme="light"] {
  --bg-base: #FAF9F7;
  --bg-primary: #FFFFFF;
  --bg-secondary: #F4F3F0;
  --bg-surface: #FFFFFF;
  --bg-elevated: #F7F6F3;
  --bg-deep: #EFEEE9;
  --bg-sunken: #F6F5F2;
  --bg-hover: #EFEEE9;
  --border-primary: #E2E1DD;
  --border-secondary: #D2D1CC;
  --border-subtle: #ECEBE8;
  --text-primary: #17161A;
  --text-secondary: #3A393E;
  --text-tertiary: #6F6E6A;
  --text-muted: #8F8D88;
  --scrollbar-track: #F4F3F0;
  --scrollbar-thumb: #D2D1CC;
  --scrollbar-thumb-hover: #B9B8B2;
  --glass-bg: rgba(255,255,255,0.6);
  --glass-border: rgba(107,114,128,0.12);
  --glass-glow: rgba(107,114,128,0.06);
  --glass-glow-hover: rgba(107,114,128,0.12);
  --glow-primary: rgba(107,114,128,0.12);
  --glow-secondary: rgba(192,192,192,0.08);
  --glow-tertiary: rgba(75,85,99,0.06);
  --nav-active-bg: rgba(23,22,26,0.06);
  --nav-hover-bg: rgba(23,22,26,0.04);
  --nav-active-glow: rgba(107,114,128,0.12);
  --btn-primary-bg: #6B7280;
  --btn-primary-text: #FFFFFF;
  --btn-primary-hover: #4B5563;
  --btn-primary-shadow: rgba(107,114,128,0.25);
  --btn-selected-bg: #E5E7EB;
  --btn-selected-border: #6B7280;
  --overlay-heavy: rgba(20,18,12,0.5);
  --overlay-medium: rgba(20,18,12,0.35);
  --overlay-light: rgba(20,18,12,0.15);
  --overlay-full: rgba(20,18,12,0.85);
  --overlay-border: rgba(20,18,12,0.08);
  --selection-bg: rgba(107,114,128,0.2);
  /* Sidebar（跟随主题 — 亮色下暖色灰区分） */
  --sidebar-bg: #F4F3F0;
  --sidebar-text: #6F6E6A;
  --sidebar-hover: #ECEBE8;
  --sidebar-active: #F6EFDD;
  /* 主题强调色 (accent) - 暖琥珀色调，高对比度 */
  --accent: #6B7280;
  --accent-hover: #4B5563;
  --accent-muted: #9CA3AF;
  --accent-bg: rgba(107,114,128,0.12);
  --accent-bg-hover: rgba(107,114,128,0.2);
  --accent-border: rgba(107,114,128,0.3);
  --accent-text: #4B5563;
  --accent-text-hover: #374151;
  --accent-on: #FFFFFF;
  --accent-shadow: rgba(107,114,128,0.2);
  /* 2026-07 UI 现代化新增 */
  --accent-gradient: none;
  --card-gradient-warm: none;
  --card-gradient-cool: none;
  --shadow-card: 0 1px 3px rgba(20,18,12,.05), 0 5px 16px rgba(20,18,12,.05);
  /* 开关/Toggle */
  --toggle-active: #6B7280;
  --toggle-inactive: var(--border-secondary);
  --toggle-knob: #ffffff;
  /* 状态色: 成功 */
  --success: #16a34a;
  --success-text: #15803d;
  --success-bg: rgba(22, 163, 74, 0.08);
  --success-border: rgba(22, 163, 74, 0.25);
  /* 状态色: 错误/危险 */
  --error: #dc2626;
  --error-text: #b91c1c;
  --error-bg: rgba(220, 38, 38, 0.06);
  --error-border: rgba(220, 38, 38, 0.2);
  --error-hover-bg: rgba(220, 38, 38, 0.08);
  --error-hover-bg-strong: rgba(220, 38, 38, 0.15);
  /* 状态色: 警告 */
  --warning: #d97706;
  --warning-text: #b45309;
  --warning-bg: rgba(217, 119, 6, 0.08);
  --warning-border: rgba(217, 119, 6, 0.25);
  /* 状态色: 信息 */
  --info: #2563eb;
  --info-text: #1d4ed8;
  --info-bg: rgba(37, 99, 235, 0.06);
  --info-border: rgba(37, 99, 235, 0.2);
  /* 辅助标记色: purple (视频提示词) */
  --tag-purple: #7c3aed;
  --tag-purple-bg: rgba(124, 58, 237, 0.08);
  --tag-purple-border: rgba(124, 58, 237, 0.2);
  --tag-purple-hover: rgba(124, 58, 237, 0.08);
}