/* ==========================================================================
   QASTCO Design Tokens
   All custom properties from technical-spec-phase1.md Section 11
   ========================================================================== */

:root {
  /* Brand */
  --color-primary: #D91920;
  --color-primary-dark: #C41920;
  --color-primary-light: #FF4D54;

  /* Neutrals */
  --color-ink: #0F172A;
  --color-body: #334155;
  --color-muted: #64748B;
  --color-line: #E2E8F0;
  --color-soft: #F8FAFC;
  --color-white: #FFFFFF;
  --color-dark: #111827;

  /* Feedback */
  --color-success: #166534;
  --color-error: #991B1B;

  /* Typography */
  --font-primary: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-black: 900;

  /* Fluid type scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.8125rem);
  --text-sm: clamp(0.8125rem, 0.775rem + 0.19vw, 0.875rem);
  --text-base: clamp(0.9375rem, 0.9rem + 0.19vw, 1rem);
  --text-lg: clamp(1.0625rem, 1rem + 0.31vw, 1.125rem);
  --text-xl: clamp(1.1875rem, 1.1rem + 0.44vw, 1.3125rem);
  --text-2xl: clamp(1.4375rem, 1.3rem + 0.69vw, 1.6875rem);
  --text-3xl: clamp(1.75rem, 1.5rem + 1.25vw, 2.25rem);
  --text-4xl: clamp(2.125rem, 1.75rem + 1.88vw, 3rem);
  --text-5xl: clamp(2.625rem, 2rem + 3.13vw, 3.75rem);

  /* Line heights */
  --leading-tight: 1.1;
  --leading-snug: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;

  /* Spacing scale */
  --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;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 8px 28px rgba(15, 23, 42, 0.12);

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 999px;

  /* Transitions */
  --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 150ms;
  --duration-normal: 200ms;
  --duration-slow: 300ms;

  /* Z-index scale (ceiling: 9999 for Oversite) */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-header: 500;
  --z-floating-cta: 600;
}