/**
 * Design tokens — Beşiktaş Kombi Servisi
 * Phase 4: single source of truth for color, type, space, radius, shadow
 */

:root {
  /* Colors */
  --color-primary: #0b1220;
  --color-primary-soft: #111c2e;
  --color-secondary: #1769e0;
  --color-secondary-hover: #1258be;
  --color-accent: #f97316;
  --color-accent-hover: #ea680c;
  --color-background: #f8fafc;
  --color-surface: #ffffff;
  --color-text: #111827;
  --color-muted: #64748b;
  --color-border: #e2e8f0;
  --color-border-strong: #cbd5e1;
  --color-focus: #1769e0;
  --color-success: #0f766e;

  /* Legacy aliases (header/nav from phase 2) */
  --bks-navy: var(--color-primary);
  --bks-navy-deep: #070d18;
  --bks-ink: var(--color-text);
  --bks-muted: var(--color-muted);
  --bks-line: var(--color-border);
  --bks-surface: var(--color-surface);
  --bks-soft: var(--color-background);
  --bks-focus: var(--color-focus);

  /* Typography — self-hosted friendly stacks (no Google Fonts dependency) */
  --font-sans: "Manrope", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-display: "Outfit", "Manrope", "Segoe UI", sans-serif;
  --font-size-xs: 0.8125rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-md: 1.0625rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: clamp(1.75rem, 1.4rem + 1.2vw, 2.25rem);
  --font-size-3xl: clamp(2rem, 1.55rem + 1.8vw, 3rem);
  --line-height-tight: 1.2;
  --line-height-snug: 1.35;
  --line-height-body: 1.65;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Layout */
  --container-width: 77.5rem; /* 1240px */
  --container-pad: 1.25rem;
  --header-h: 4.25rem;
  --topbar-h: 2.125rem;
  --bks-max: var(--container-width);
  --bks-header-h: var(--header-h);
  --sticky-cta-h: 4.25rem;

  /* Spacing scale */
  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4.5rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.25rem;
  --radius-full: 999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(11, 18, 32, 0.05);
  --shadow-md: 0 8px 24px rgba(11, 18, 32, 0.08);
  --shadow-lg: 0 16px 40px rgba(11, 18, 32, 0.12);

  /* Motion */
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 500ms;
  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-emphasized: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out: var(--ease-emphasized);
  --ease: var(--duration-normal) var(--ease-standard);
  --bks-ease: var(--ease);
  --header-offset: 4.5rem;
}

@media (min-width: 768px) {
  :root {
    --container-pad: 1.5rem;
  }
}

@media (min-width: 1024px) {
  :root {
    --container-pad: 2rem;
    --header-h: 4.75rem;
    --header-offset: calc(var(--topbar-h) + var(--header-h));
  }
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --ease: 0.01ms;
    --ease-out: 0.01ms;
    --duration-fast: 0.01ms;
    --duration-normal: 0.01ms;
    --duration-slow: 0.01ms;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}