:root {
  /* Colors — brand */
  --color-bg: #FFFFFF;
  --color-background: #FFFFFF;
  --color-bg-subtle: #F7FAFB;
  --color-bg-muted: #F0F4F5;
  --color-surface: #FFFFFF;
  --color-off-white: #F7FAFB;
  --color-text: #000000;
  --color-text-secondary: #666666;
  --color-text-muted: #888888;
  --color-text-inverse: #FFFFFF;
  --color-primary: #00BCD4;
  --color-primary-light: rgba(0, 188, 212, 0.12);
  --color-primary-dark: #004D56;
  --color-accent: #00E5FF;
  --color-accent-cyan: #00E5FF;
  --color-teal-deep: #006064;
  --gradient-primary: linear-gradient(135deg, #00BCD4 0%, #004D56 100%);
  --gradient-dark: linear-gradient(135deg, #004D56 0%, #006064 50%, #003840 100%);
  --gradient-subtle: linear-gradient(135deg, rgba(0, 188, 212, 0.08) 0%, rgba(0, 77, 86, 0.04) 100%);
  --gradient-legendary-reverse: linear-gradient(135deg, #000000 0%, #00BCD4 100%);
  --gradient-triple: linear-gradient(180deg, #00BCD4 0%, #006064 50%, #000000 100%);
  --color-border: rgba(0, 0, 0, 0.08);
  --color-glass: rgba(255, 255, 255, 0.55);
  --color-glass-strong: rgba(255, 255, 255, 0.78);
  --color-glass-card: rgba(255, 255, 255, 0.72);
  --color-glass-border: rgba(255, 255, 255, 0.72);
  --color-glass-border-soft: rgba(0, 188, 212, 0.18);
  --color-glass-shadow: rgba(0, 77, 86, 0.12);
  --glass-blur: 40px;
  --glass-blur-card: 16px;
  --glass-saturate: 200%;
  --color-primary-tint: rgba(0, 188, 212, 0.12);
  --color-focus-ring: rgba(0, 188, 212, 0.45);
  --gradient-mesh: radial-gradient(ellipse 70% 50% at 20% 0%, rgba(0, 188, 212, 0.12) 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 90% 20%, rgba(0, 77, 86, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse 40% 30% at 50% 100%, rgba(0, 229, 255, 0.06) 0%, transparent 45%);
  --gradient-card-border: linear-gradient(135deg, rgba(0, 229, 255, 0.55), rgba(0, 188, 212, 0.15), rgba(0, 77, 86, 0.35));

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 77, 86, 0.06);
  --shadow-md: 0 4px 24px rgba(0, 77, 86, 0.08);
  --shadow-lg: 0 8px 40px rgba(0, 77, 86, 0.12);
  --shadow-hover: 0 12px 48px rgba(0, 77, 86, 0.14);
  --shadow-card: 0 4px 20px rgba(0, 77, 86, 0.07);
  --shadow-card-glass: 0 8px 32px rgba(0, 77, 86, 0.08), 0 1px 0 rgba(255, 255, 255, 0.6) inset;
  --shadow-floating: 0 8px 32px rgba(0, 77, 86, 0.14), 0 2px 8px rgba(0, 77, 86, 0.06);
  --shadow-glow: 0 0 60px rgba(0, 188, 212, 0.2);
  --shadow-btn-glow: 0 4px 24px rgba(0, 188, 212, 0.35), 0 0 40px rgba(0, 229, 255, 0.15);
  --shadow-btn-press: 0 2px 8px rgba(0, 77, 86, 0.2);

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 9999px;

  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 48px;
  --space-7: 64px;
  --space-8: 96px;
  --space-9: 128px;
  --space-10: 160px;
  --section-spacing: clamp(80px, 10vw, 128px);

  /* Layout */
  --container-max: 1280px;
  --container-width: 1280px;
  --container-padding: 24px;
  --section-y: var(--section-spacing);
  --header-height: 116px;
  --header-height-scrolled: 72px;
  --nav-pill-height: 52px;
  --nav-pill-height-scrolled: 46px;

  /* Typography */
  --font-display: 'Sora', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-ar: 'IBM Plex Sans Arabic', sans-serif;
  --text-max-width: 65ch;

  /* Transitions / motion */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  --transition-timing: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-premium: cubic-bezier(0.22, 1, 0.36, 1);
  --motion-duration-fast: 0.35s;
  --motion-duration: 0.7s;
  --motion-duration-slow: 1s;
  --motion-stagger: 0.08s;
  --motion-y: 28px;

  /* Z-index */
  --z-navbar: 100;
  --z-overlay: 200;
  --z-modal: 300;
}

@media (min-width: 1024px) {
  :root {
    --container-padding: 48px;
  }
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --transition-fast: 0.01ms;
    --transition-base: 0.01ms;
    --transition-slow: 0.01ms;
    --transition-timing: 0.01ms;
  }
}