/**
 * Design Tokens & CSS Variables
 * Premium Dual-Theme System
 */

/* Dark Mode Tokens (Default) */
:root {
    --theme-name: "dark";

    /* Core Palette */
    --bg-app: #0b0f19;
    --bg-surface: #131b2e;
    --bg-surface-glass: rgba(19, 27, 46, 0.7);
    --bg-surface-hover: #1e294b;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    
    /* Text Palette */
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-inverse: #0f172a;

    /* Accents & States */
    --accent-primary: #6366f1; /* Indigo */
    --accent-primary-hover: #4f46e5;
    --accent-secondary: #a855f7; /* Purple */
    --accent-tertiary: #14b8a6; /* Teal */
    
    /* Status Colors */
    --status-none: #64748b;
    --status-todo: #94a3b8;
    --status-in-progress: #f59e0b;
    --status-done: #10b981;
    --status-blocked: #ef4444;

    /* Shadows & Glows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 15px rgba(99, 102, 241, 0.25);
    --shadow-glow-purple: 0 0 15px rgba(168, 85, 247, 0.25);

    /* Grids & Canvas */
    --canvas-grid-line: rgba(255, 255, 255, 0.03);
    --canvas-grid-line-sub: rgba(255, 255, 255, 0.01);
    --canvas-bg: #090d16;
}

/* Light Mode Overrides */
[data-theme="light"] {
    --theme-name: "light";

    /* Core Palette */
    --bg-app: #f8fafc;
    --bg-surface: #ffffff;
    --bg-surface-glass: rgba(255, 255, 255, 0.8);
    --bg-surface-hover: #f1f5f9;
    --border-color: rgba(15, 23, 42, 0.08);
    --border-hover: rgba(15, 23, 42, 0.15);
    
    /* Text Palette */
    --text-main: #0f172a;
    --text-muted: #64748b;
    --text-inverse: #ffffff;

    /* Accents & States */
    --accent-primary: #4f46e5;
    --accent-primary-hover: #4338ca;
    --accent-secondary: #8b5cf6;
    --accent-tertiary: #0d9488;
    
    /* Status Colors */
    --status-none: #94a3b8;
    --status-todo: #64748b;
    --status-in-progress: #d97706;
    --status-done: #059669;
    --status-blocked: #dc2626;

    /* Shadows & Glows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.15), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 15px rgba(99, 102, 241, 0.15);
    --shadow-glow-purple: 0 0 15px rgba(168, 85, 247, 0.15);

    /* Grids & Canvas */
    --canvas-grid-line: rgba(15, 23, 42, 0.04);
    --canvas-grid-line-sub: rgba(15, 23, 42, 0.015);
    --canvas-bg: #f1f5f9;
}