:root {
    /* Brand palette */
    --color-green: #7EDB51;
    --color-blue: #229CE2;
    --color-white: #EFEFEF;

    /* Semantic tokens */
    --color-primary: var(--color-blue);
    --color-secondary: var(--color-green);
    --color-accent: var(--color-green);
    --color-bg: var(--color-white);
    --color-bg-alt: #ffffff;
    --color-text: #1a1a1a;
    --color-text-muted: #5a6470;
    --color-text-inverse: var(--color-white);
    --color-border: #d8d8d8;

    /* Brand tints / shades — useful for hovers, gradients, overlays */
    --color-blue-dark: #1a7eb8;
    --color-blue-light: #4db4ea;
    --color-green-dark: #62b73d;
    --color-green-light: #9be274;

    /* Typography */
    --font-primary: 'Inter', system-ui, -apple-system, sans-serif;
    --font-heading: 'Raleway', 'Inter', system-ui, -apple-system, sans-serif;

    /* Font sizes — fluid clamp() */
    --fs-xs: clamp(0.75rem, 0.7rem + 0.2vw, 0.875rem);
    --fs-sm: clamp(0.875rem, 0.8rem + 0.3vw, 1rem);
    --fs-base: clamp(1rem, 0.95rem + 0.3vw, 1.125rem);
    --fs-lg: clamp(1.125rem, 1rem + 0.5vw, 1.375rem);
    --fs-xl: clamp(1.5rem, 1.2rem + 1vw, 2rem);
    --fs-2xl: clamp(2rem, 1.5rem + 2vw, 3rem);
    --fs-3xl: clamp(2.5rem, 2rem + 3vw, 4.5rem);
    --fs-4xl: clamp(3rem, 2.5rem + 4vw, 6rem);

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;
    --space-3xl: 8rem;

    /* Layout */
    --container-max: 1280px;
    --container-padding: clamp(1rem, 4vw, 2rem);

    /* Borders & radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --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 25px 50px rgba(0, 0, 0, 0.15);

    /* Transitions */
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
    --transition-fast: 0.2s var(--ease-out);
    --transition-base: 0.4s var(--ease-out);
    --transition-slow: 0.8s var(--ease-out);

    /* Z-index scale */
    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-overlay: 300;
    --z-modal: 400;
    --z-toast: 500;

    /* Hero overlay tint (brand-tinted, not pure black) */
    --hero-overlay-from: rgba(8, 30, 50, 0.55);
    --hero-overlay-to:   rgba(8, 30, 50, 0.30);
}