/* 
 * Card Games - Design Tokens
 * Centralized CSS variables for consistent theming across all games
 */

:root {
    /* Colors */
    --bg-primary: #1a3d2e;
    --bg-secondary: #0d1f16;
    --bg-tertiary: #1a2f23;
    
    --table-color: #0f2318;
    --table-border: #3d6b4a;
    
    --card-bg: #fefefe;
    --card-back: #2a4a6b;
    --card-back-border: #3a5a7a;
    
    --text-primary: #f0f0f0;
    --text-muted: #a0a0a0;
    --text-inverse: #1a1a1a;
    --text-color: var(--text-primary); /* Legacy compatibility */
    
    --accent-gold: #d4af37;
    --accent-gold-light: #f4d03f;
    --accent-gold-dark: #b8962e;
    --accent-color: var(--accent-gold); /* Legacy compatibility */
    
    /* Button colors */
    --button-bg: #3d5c45;
    --button-hover: #4a7a56;
    
    /* Interactive states */
    --selected-color: #ffd700;
    --valid-color: #4ade80;
    --error-color: #ef4444;
    --success-color: #5faa70;
    
    /* Sizing */
    --card-width: 70px;
    --card-height: 98px;
    --card-gap: 10px;
    --border-radius: 10px;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-bold: 600;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.2s ease;
    --transition-slow: 0.3s ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 4px 8px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 8px 32px rgba(0, 0, 0, 0.4);
    
    /* Z-index layers */
    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 1000;
    --z-toast: 1100;
}

/* Dark theme background gradient */
body {
    background: linear-gradient(
        135deg, 
        var(--bg-primary) 0%, 
        var(--bg-secondary) 50%, 
        var(--bg-tertiary) 100%
    );
}

/* Card colors */
.card {
    background: var(--card-bg);
    color: var(--text-inverse);
}

.card.red {
    color: #d62828;
}

.card.black {
    color: #1a1a1a;
}

.card-back {
    background: var(--card-back);
}

/* Text colors */
.text-primary {
    color: var(--text-primary);
}

.text-muted {
    color: var(--text-muted);
}

.text-accent {
    color: var(--accent-gold);
}

/* Background colors */
.bg-table {
    background: var(--table-color);
    border-color: var(--table-border);
}

/* Button base styles */
.btn {
    background: var(--button-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    font-family: var(--font-family);
    font-weight: var(--font-weight-medium);
    padding: 8px 14px;
    border-radius: 4px;
    cursor: pointer;
    transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn:hover {
    background: var(--button-hover);
    box-shadow: var(--shadow-md);
}

.btn:active {
    transform: scale(0.95);
}

/* Utility classes */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}