:root,:root[data-theme=light]{--color-bg: #f4f6fb;--color-surface: #ffffff;--color-primary: #2962ff;--color-text: #1f2a44;--color-border: #d9dfeb;--primary-color: var(--color-primary);--danger-color: #e53935;--warning-color: #f9a825;--background-color: var(--color-bg);--card-background: var(--color-surface);--text-color: var(--color-text);--text-muted: #6b7280}:root[data-theme=dark]{--color-bg: #0f172a;--color-surface: #1e293b;--color-primary: #60a5fa;--color-text: #e2e8f0;--color-border: #334155;--primary-color: var(--color-primary);--danger-color: #f87171;--warning-color: #f59e0b;--background-color: var(--color-bg);--card-background: var(--color-surface);--text-color: var(--color-text);--text-muted: #94a3b8}*{box-sizing:border-box}body{margin:0;font-family:Inter,Arial,sans-serif;color:var(--color-text);background:var(--color-bg)}button{cursor:pointer}