/* ==========================================================================
   Design Tokens — WERTBASE GmbH
   ========================================================================== */

:root {
  /* Primary — Navy Blue Scale */
  --color-primary-900: #0A1628;
  --color-primary-800: #0F2140;
  --color-primary-700: #152D58;
  --color-primary-600: #1B3A70;
  --color-primary-500: #234B8F;
  --color-primary-400: #3A6BB5;
  --color-primary-300: #6B9BD2;
  --color-primary-200: #A3C4E8;
  --color-primary-100: #D6E5F5;
  --color-primary-50: #F4F8FB;

  /* Neutral — Greys */
  --color-neutral-900: #1A1A2E;
  --color-neutral-800: #2D2D3F;
  --color-neutral-700: #404055;
  --color-neutral-600: #5A5A6E;
  --color-neutral-500: #7A7A8E;
  --color-neutral-400: #9E9EB0;
  --color-neutral-300: #C2C2D0;
  --color-neutral-200: #DDDDE6;
  --color-neutral-100: #EDEDF2;
  --color-neutral-50: #F7F7FA;

  /* Accent — Copper (CTA only) */
  --color-accent: #C45B28;
  --color-accent-hover: #A84D22;
  --color-accent-light: #D4774A;

  /* Semantic */
  --color-text: var(--color-neutral-900);
  --color-text-secondary: var(--color-neutral-600);
  --color-text-light: var(--color-neutral-500);
  --color-bg: #FFFFFF;
  --color-bg-alt: var(--color-neutral-50);
  --color-border: var(--color-neutral-200);
  --color-success: #2E7D4F;
  --color-error: #C43B3B;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.8125rem);
  --font-size-sm: clamp(0.8125rem, 0.775rem + 0.25vw, 0.875rem);
  --font-size-base: clamp(0.9375rem, 0.9rem + 0.25vw, 1rem);
  --font-size-md: clamp(1.0625rem, 1rem + 0.25vw, 1.125rem);
  --font-size-lg: clamp(1.1875rem, 1.1rem + 0.5vw, 1.3125rem);
  --font-size-xl: clamp(1.375rem, 1.2rem + 0.75vw, 1.625rem);
  --font-size-2xl: clamp(1.625rem, 1.4rem + 1vw, 2rem);
  --font-size-3xl: clamp(2rem, 1.6rem + 1.5vw, 2.625rem);
  --font-size-4xl: clamp(2.375rem, 1.8rem + 2vw, 3.25rem);

  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --line-height-tight: 1.2;
  --line-height-snug: 1.35;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.75;

  --letter-spacing-tight: -0.02em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.02em;
  --letter-spacing-wider: 0.05em;

  /* Spacing — 8px grid */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */
  --space-32: 8rem;     /* 128px */

  /* Layout */
  --container-max: 1152px;
  --container-padding: var(--space-6);
  --section-padding: var(--space-12);
  --section-padding-desktop: var(--space-24);

  /* Borders */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(10, 22, 40, 0.06);
  --shadow-md: 0 4px 12px rgba(10, 22, 40, 0.08);
  --shadow-lg: 0 8px 24px rgba(10, 22, 40, 0.1);
  --shadow-xl: 0 16px 48px rgba(10, 22, 40, 0.12);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Header */
  --header-height: 72px;
}