/* DoubleTZ.com - Design Tokens / CSS Custom Properties */
/* Single source of truth for all design values */

:root {
    /* Colors - To be refined during design phase */
    --color-primary: #1a1a2e;
    --color-primary-light: #16213e;
    --color-accent: #e94560;
    --color-accent-hover: #c73852;

    --color-bg: #ffffff;
    --color-bg-alt: #f8f9fa;
    --color-bg-dark: #1a1a2e;

    --color-text: #2d2d2d;
    --color-text-light: #6c757d;
    --color-text-inverse: #ffffff;

    --color-border: #dee2e6;
    --color-border-light: #e9ecef;

    --color-success: #28a745;
    --color-warning: #ffc107;
    --color-error: #dc3545;
    --color-info: #17a2b8;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: var(--font-primary);

    --text-xs: clamp(0.7rem, 0.65rem + 0.25vw, 0.75rem);
    --text-sm: clamp(0.8rem, 0.75rem + 0.25vw, 0.875rem);
    --text-base: clamp(0.9rem, 0.85rem + 0.25vw, 1rem);
    --text-lg: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
    --text-xl: clamp(1.15rem, 1rem + 0.5vw, 1.25rem);
    --text-2xl: clamp(1.3rem, 1.1rem + 0.75vw, 1.5rem);
    --text-3xl: clamp(1.6rem, 1.3rem + 1vw, 1.875rem);
    --text-4xl: clamp(1.9rem, 1.5rem + 1.5vw, 2.25rem);
    --text-5xl: clamp(2.4rem, 1.8rem + 2vw, 3rem);

    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;

    --leading-tight: 1.2;
    --leading-normal: 1.6;
    --leading-relaxed: 1.8;

    /* Spacing (4px base) */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* Layout */
    --container-max: 1200px;
    --container-narrow: 768px;
    --container-wide: 1400px;

    /* Borders */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.15);

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

    /* Z-index scale */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-overlay: 300;
    --z-modal: 400;
    --z-toast: 500;
}