:root {
    /* Colors - Deep Blue Theme */
    --color-bg: #0a1128;
    /* Deepest blue/black */
    --color-surface: #132244;
    /* Slightly lighter blue for cards */
    --color-surface-hover: #1c3263;

    --color-text: #f8f9fa;
    /* Almost white */
    --color-text-muted: #b0b8c8;
    /* Blue-grey */

    --color-border: #1f3a60;
    --color-border-hover: #2d558d;

    /* Colors - Teal Accent */
    --color-primary: #20c997;
    /* Teal */
    --color-primary-600: #15a076;
    --color-primary-100: rgba(32, 201, 151, 0.15);
    /* Tint for backgrounds */
    --color-primary-text: #70ffcd;
    /* Lighter teal for text on dark bg */

    /* Typography */
    --font-family-base: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-family-mono: "Fira Code", SFMono-Regular, Menlo, Monaco, Consolas, monospace;

    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.5rem;

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-bold: 700;

    /* Spacing */
    --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;

    /* Radii */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1.25rem;
    --radius-pill: 50rem;

    /* Shadows - Adjusted for dark mode (subtle glows) */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 15px rgba(32, 201, 151, 0.15);
    /* Teal glow */

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;

    /* Z-Index */
    --z-sticky: 100;
    --z-modal: 1000;

    /* Layout */
    --container-max-width: 1200px;
    --header-height: 80px;
}