/**
 * Design System Variables
 * Centralized color palette and design tokens for consistent lofi aesthetic
 */

/* Default Theme: Warm Sepia */
:root,
[data-theme="sepia"] {
    /* Base Colors - Lofi Sepia/Olive Palette */
    --color-bg-primary: #1e1e1e;
    --color-bg-secondary: #2a2b26;
    --color-bg-tertiary: #32332e;

    --color-text-primary: rgba(232, 224, 213, 0.9);
    --color-text-secondary: rgba(232, 224, 213, 0.7);
    --color-text-muted: rgba(232, 224, 213, 0.5);

    /* Theme Accents */
    --color-accent-olive: #a9b665;
    --color-accent-sepia: #d4be98;
    --color-accent-teal: #7daea3;
    --color-accent-warm: #ea6962;

    /* Glassmorphism */
    --glass-bg: rgba(42, 43, 38, 0.75);
    --glass-border: rgba(169, 182, 101, 0.12);
    --glass-blur: 12px;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Courier New', 'Courier', monospace;
    --font-serif: 'Georgia', serif;

    /* Spacing Scale */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);

    /* Effects */
    --grain-opacity: 0.03;
    --hover-glow: drop-shadow(0 0 8px var(--color-accent-olive));

    /* Legacy / Compatibility Mapping */
    --bg: var(--color-bg-primary);
    --bg-secondary: var(--color-bg-secondary);
    --bg-card: var(--glass-bg);
    --text-primary: var(--color-text-primary);
    --text-secondary: var(--color-text-secondary);
    --accent: var(--color-accent-olive);
    --accent-secondary: var(--color-accent-warm);
    --accent-tertiary: var(--color-accent-teal);
    --glow: var(--hover-glow);
}



/* Utility Classes */
.glass {
    background: var(--glass-bg);
    -webkit-backdrop-filter: blur(var(--glass-blur));
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
}

.grain {
    position: relative;
}

.grain::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('data:image/svg+xml;utf8,<svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg"><filter id="noise"><feTurbulence type="fractalNoise" baseFrequency="0.9" numOctaves="3" stitchTiles="stitch"/></filter><rect width="100%" height="100%" filter="url(%23noise)" opacity="0.03"/></svg>');
    pointer-events: none;
    opacity: var(--grain-opacity);
    mix-blend-mode: overlay;
}