/* variables.css — Design Tokens */
:root {
    /* Primary — deep navy/space theme */
    --color-primary: #0B1D3A;
    --color-primary-light: #1A3A5C;

    /* Accent — energetic orange/fire (rocket thrust) */
    --color-accent: #E05A1B;
    --color-accent-hover: #C94E17;
    --color-accent-light: #FFF0E8;

    /* Secondary — sky blue */
    --color-secondary: #4DA8DA;
    --color-secondary-light: #E8F4FA;

    /* Neutrals */
    --color-white: #FFFFFF;
    --color-gray-50: #F8FAFC;
    --color-gray-100: #F1F5F9;
    --color-gray-300: #CBD5E1;
    --color-gray-500: #64748B;
    --color-gray-700: #334155;
    --color-gray-900: #0F172A;

    /* Semantic */
    --color-success: #22C55E;
    --color-warning: #F59E0B;
    --color-error: #EF4444;

    /* Typography */
    --font-heading: 'Space Grotesk', system-ui, -apple-system, sans-serif;
    --font-body: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;

    /* Type Scale (Major Third — 1.25) */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;

    /* Line Heights */
    --leading-tight: 1.15;
    --leading-normal: 1.6;

    /* Font Weights */
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

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

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 1px 3px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.1), 0 8px 24px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 8px 24px rgba(0, 0, 0, 0.12), 0 16px 48px rgba(0, 0, 0, 0.08);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.2s ease;
    --transition-slow: 0.3s ease;

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

    /* Header height (for sticky offset) */
    --header-height: 72px;
}