:root {
  /* --- Core Palette (Dark Theme Revert) --- */
  --brand: #3b82f6;
  /* Bright Blue for Dark Mode */
  --brand-dark: #1d4ed8;
  --brand-light: #60a5fa;
  --accent: #2dd4bf;
  /* Teal Pop */
  --accent-light: #14b8a6;

  --navy: #0b1220;
  /* Main Background */
  --navy-light: #101a2c;
  /* Secondary Background */

  --bg: #0b1220;
  /* Deep Navy Background */
  --surface: rgba(255, 255, 255, 0.03);
  /* Glassy Dark Surface */
  --surface-alt: #101a2c;
  /* Lighter Navy Sections */

  --text: #f8fafc;
  /* White/Off-White Text */
  --text-muted: #94a3b8;
  /* Light Slate for subtitles */
  --text-light: #cbd5e1;
  /* Lighter Slate */
  --text-on-dark: #ffffff;

  --border: rgba(255, 255, 255, 0.1);
  /* Light border for dark bg */
  --border-dark: rgba(0, 0, 0, 0.2);
  /* Darker border for depth */

  /* --- Typography --- */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;

  --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-display: 3.5rem;

  /* --- Spacing --- */
  --space-4: 0.25rem;
  --space-8: 0.5rem;
  --space-12: 0.75rem;
  --space-16: 1rem;
  --space-24: 1.5rem;
  --space-32: 2rem;
  --space-40: 2.5rem;
  --space-48: 3rem;
  --space-56: 3.5rem;
  --space-64: 4rem;
  --space-72: 4.5rem;
  --space-80: 5rem;

  /* --- Shadows --- */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  --shadow-glow: 0 0 20px rgba(29, 78, 216, 0.3);

  /* --- Radius --- */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-pill: 9999px;

  /* --- Transitions --- */
  --dur-2: 200ms;
  --dur-3: 300ms;
  --dur-5: 500ms;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}