/* ========================================
   VARIABLES — Design Tokens
   ======================================== */

:root {
    /* Colors — Background */
    --color-bg-primary: #0A0E17;
    --color-bg-secondary: #111827;
    --color-bg-tertiary: #1F2937;
    --color-bg-card: rgba(17, 24, 39, 0.6);
    --color-bg-glass: rgba(17, 24, 39, 0.4);

    /* Colors — Accent */
    --color-accent: #00D4AA;
    --color-accent-hover: #00F0C0;
    --color-accent-blue: #0077FF;
    --color-accent-blue-hover: #338FFF;
    --gradient-accent: linear-gradient(135deg, #00D4AA 0%, #0077FF 100%);
    --gradient-accent-hover: linear-gradient(135deg, #00F0C0 0%, #338FFF 100%);
    --gradient-accent-text: linear-gradient(135deg, #00D4AA 0%, #0077FF 100%);

    /* Colors — Text */
    --color-text-primary: #F9FAFB;
    --color-text-secondary: #9CA3AF;
    --color-text-muted: #6B7280;
    --color-text-accent: #00D4AA;

    /* Colors — Borders */
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-hover: rgba(0, 212, 170, 0.3);
    --color-border-accent: rgba(0, 212, 170, 0.5);

    /* Colors — States */
    --color-error: #EF4444;
    --color-success: #10B981;
    --color-warning: #F59E0B;

    /* Typography */
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Font Sizes — Fluid */
    --fs-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
    --fs-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
    --fs-base: clamp(1rem, 0.9rem + 0.45vw, 1.125rem);
    --fs-lg: clamp(1.125rem, 1rem + 0.55vw, 1.25rem);
    --fs-xl: clamp(1.25rem, 1.1rem + 0.7vw, 1.5rem);
    --fs-2xl: clamp(1.5rem, 1.2rem + 1.2vw, 2rem);
    --fs-3xl: clamp(2rem, 1.5rem + 2vw, 3rem);
    --fs-4xl: clamp(2.5rem, 1.8rem + 3vw, 4rem);
    --fs-hero: clamp(2.5rem, 1.5rem + 4.5vw, 4.5rem);

    /* Font Weights */
    --fw-light: 300;
    --fw-regular: 400;
    --fw-medium: 500;
    --fw-semibold: 600;
    --fw-bold: 700;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    --space-5xl: 8rem;

    /* Layout */
    --container-max: 1200px;
    --container-padding: clamp(1rem, 3vw, 2rem);
    --navbar-height: 80px;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* 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);
    --shadow-glow: 0 0 30px rgba(0, 212, 170, 0.15);
    --shadow-glow-strong: 0 0 60px rgba(0, 212, 170, 0.25);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
    --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Z-Index Scale */
    --z-base: 1;
    --z-sticky: 100;
    --z-overlay: 200;
    --z-modal: 300;
    --z-toast: 400;
}