:root {
  /* Surfaces — açık ürün odaklı katalog */
  --color-bg: #f5f5f6;
  --color-bg-elevated: #ffffff;
  --color-surface: #ffffff;
  --color-surface-muted: #f0f0f2;
  --color-surface-hover: #fafafa;
  --color-border: #e4e4e7;
  --color-border-strong: #d4d4d8;

  /* Brand accent — koyu bordo (CSS değişkeni; JS zorunlu değil) */
  --color-accent: #6b2d3c;
  --color-accent-soft: rgba(107, 45, 60, 0.08);
  --color-accent-hover: #823848;
  --color-accent-active: #572432;
  --color-accent-contrast: #ffffff;

  /* Text */
  --color-text: #1c1c1f;
  --color-text-muted: #4a4a54;
  --color-text-subtle: #6a6a74;

  /* Status */
  --color-success: #2f6b4f;
  --color-success-soft: rgba(47, 107, 79, 0.1);
  --color-warning: #9a6b1f;
  --color-warning-soft: rgba(154, 107, 31, 0.12);
  --color-danger: #a33b3b;
  --color-danger-soft: rgba(163, 59, 59, 0.1);

  /* Typography — sade, okunaklı, hazır şablon hissi vermeyen */
  --font-display: "Sora", "Segoe UI", sans-serif;
  --font-body: "Source Sans 3", "Segoe UI", sans-serif;

  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-md: 1.125rem;
  --fs-lg: 1.25rem;
  --fs-xl: 1.5rem;
  --fs-2xl: 1.875rem;
  --fs-3xl: clamp(1.75rem, 3.5vw, 2.5rem);
  --fs-4xl: clamp(2rem, 5vw, 3.25rem);

  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;

  --lh-tight: 1.2;
  --lh-snug: 1.4;
  --lh-normal: 1.6;

  /* 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: 76rem;
  --topbar-height: 2.25rem;
  --header-main-height: 4.5rem;
  --header-nav-height: 2.75rem;
  --header-stack: calc(var(--topbar-height) + var(--header-main-height) + var(--header-nav-height));
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Effects — abartısız */
  --shadow-sm: 0 1px 2px rgba(28, 28, 31, 0.05);
  --shadow-md: 0 4px 14px rgba(28, 28, 31, 0.07);
  --shadow-lg: 0 10px 28px rgba(28, 28, 31, 0.09);
  --transition-fast: 150ms ease;
  --transition: 200ms ease;
  --z-header: 100;
  --z-overlay: 200;
  --z-toast: 300;

  /* Focus */
  --focus-ring: 0 0 0 3px var(--color-bg-elevated), 0 0 0 5px var(--color-accent);
}