:root {
  /* ─── Typography ─── */
  --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* ─── Accent ─── */
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-light: #eff6ff;
  --accent-subtle: rgba(37, 99, 235, 0.06);

  /* ─── Positive / Negative ─── */
  --positive: #059669;
  --positive-bg: #ecfdf5;
  --negative: #dc2626;
  --negative-bg: #fef2f2;
  --warning: #d97706;
  --warning-bg: #fffbeb;

  /* ─── Cool Slate Palette ─── */
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  --gray-950: #020617;

  /* ─── Semantic ─── */
  --color-bg: #f8fafc;
  --color-bg-alt: #f1f5f9;
  --color-surface: #ffffff;
  --color-text: var(--gray-900);
  --color-text-secondary: var(--gray-500);
  --color-text-tertiary: var(--gray-400);
  --color-border: var(--gray-200);
  --color-border-strong: var(--gray-300);

  /* ─── Type Scale ─── */
  --text-2xs: 0.6875rem;
  --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: 2rem;
  --text-4xl: 2.75rem;
  --text-5xl: 3.5rem;
  --text-6xl: 4.5rem;

  --leading-tight: 1.1;
  --leading-snug: 1.3;
  --leading-normal: 1.55;
  --leading-relaxed: 1.7;

  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.04em;
  --tracking-wider: 0.08em;
  --tracking-widest: 0.12em;

  /* ─── 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;
  --space-20: 5rem;
  --space-24: 6rem;

  /* ─── Layout ─── */
  --container-max: 1200px;
  --container-narrow: 720px;
  --container-padding: var(--space-5);

  /* ─── Border Radius ─── */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* ─── Shadows ─── */
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.07), 0 2px 4px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 12px 24px rgba(15, 23, 42, 0.08), 0 4px 8px rgba(15, 23, 42, 0.04);
  --shadow-xl: 0 20px 40px rgba(15, 23, 42, 0.1), 0 8px 16px rgba(15, 23, 42, 0.06);
  --shadow-ring: 0 0 0 3px rgba(37, 99, 235, 0.15);
  --shadow-ring-accent: 0 0 0 3px rgba(37, 99, 235, 0.25);

  /* ─── Transitions ─── */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 120ms;
  --duration-normal: 200ms;
  --duration-slow: 350ms;

  /* ─── Z-index ─── */
  --z-dropdown: 250;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;
}

@media (min-width: 640px) {
  :root {
    --container-padding: var(--space-8);
  }
}

@media (min-width: 1024px) {
  :root {
    --container-padding: var(--space-10);
  }
}