:root {
    /* LIGHT THEME (Default) */
    --primary: #2563eb;
    --bg: #f8fafc;
    --surface: #ffffff;
    --text: #1e293b;
    --text-secondary: #64748b;
    --border: #e2e8f0;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --input-bg: #ffffff;
}

/* DARK THEME OVERRIDES */
[data-theme="dark"] {
    --primary: #3b82f6;
    --bg: #0f172a;
    --surface: #1e293b;
    --text: #f1f5f9;
    --text-secondary: #94a3b8;
    --border: #334155;
    --success: #34d399;
    --danger: #f87171;
    --warning: #fbbf24;
    --input-bg: #0f172a;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    margin: 0;
    padding: 0;
    line-height: 1.5;
    transition: background 0.3s, color 0.3s;
}

h1,
h2,
h3 {
    margin: 0;
}