:root {
    /* Default - Blue Professional (Theme 1) */
    --primary: #0056b3;
    --primary-rgb: 0, 86, 179;
    --secondary: #6c757d;
    --accent: #00a8e8;
    --text-main: #212529;
    --text-muted: #6c757d;
    --bg-main: #f8f9fa;
    --bg-card: rgba(255, 255, 255, 0.8);
    --border-color: rgba(0, 0, 0, 0.1);
    --glass-bg: rgba(255, 255, 255, 0.4);
    --glass-border: rgba(255, 255, 255, 0.2);
    --shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.10);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    --text-main: #f8f9fa;
    --text-muted: #adb5bd;
    --bg-main: #0b0e14;
    --bg-card: rgba(30, 34, 45, 0.8);
    --border-color: rgba(255, 255, 255, 0.05);
    --glass-bg: rgba(30, 34, 45, 0.4);
    --glass-border: rgba(255, 255, 255, 0.05);
    --shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
}

/* 8 Dynamic Color Themes */
/* 1. Emerald (Green) */
[data-color="emerald"] { --primary: #10b981; --primary-rgb: 16, 185, 129; --accent: #34d399; }
/* 2. Royal (Indigo) */
[data-color="royal"] { --primary: #6366f1; --primary-rgb: 99, 102, 241; --accent: #818cf8; }
/* 3. Sunset (Orange/Red) */
[data-color="sunset"] { --primary: #f97316; --primary-rgb: 249, 115, 22; --accent: #fb923c; }
/* 4. Nebula (Purple) */
[data-color="nebula"] { --primary: #8b5cf6; --primary-rgb: 139, 92, 246; --accent: #a78bfa; }
/* 5. Rose (Pink) */
[data-color="rose"] { --primary: #f43f5e; --primary-rgb: 244, 63, 94; --accent: #fb7185; }
/* 6. Gold (Amber) */
[data-color="gold"] { --primary: #f59e0b; --primary-rgb: 245, 158, 11; --accent: #fbbf24; }
/* 7. Ocean (Cyan) */
[data-color="ocean"] { --primary: #06b6d4; --primary-rgb: 6, 182, 212; --accent: #22d3ee; }
/* 8. Slate (Monochrome) */
[data-color="slate"] { --primary: #475569; --primary-rgb: 71, 85, 105; --accent: #64748b; }