/* ================================================================
   css/themes.css — 亮色/暗色主题
   ================================================================ */
/* 手动切换暗色: body 上加 class="dark" */
body.dark {
    --color-bg: #1a1d23;
    --color-surface: #252830;
    --color-text: #e0e0e0;
    --color-text-secondary: #9e9e9e;
    --color-accent: #4da6ff;
    --color-accent-hover: #3399ff;
    --color-border: #3a3d45;
    --color-danger: #ff6b6b;
    --color-warning: #ffd43b;
    --color-success: #51cf66;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow: 0 2px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 4px 20px rgba(0,0,0,0.5);
}