/* ============================================
   UYART Mimarlık - Design Tokens
   Selldorf-inspired minimalist design system
   ============================================ */

:root {
  /* Colors */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f5f5f5;
  --color-bg-dark: #1a1a1a;
  --color-bg-overlay: rgba(0, 0, 0, 0.45);
  --color-text-primary: #4a4a4a;
  --color-text-heading: #2c2c2c;
  --color-text-muted: #a1a1a1;
  --color-text-white: #ffffff;
  --color-accent: #055e94;
  --color-accent-hover: #044a75;
  --color-accent-red: #d93127;
  --color-border: #e0e0e0;
  --color-border-light: #f0f0f0;

  /* Typography */
  --font-heading: 'Lato', sans-serif;
  --font-body: 'Open Sans', sans-serif;
  --fw-light: 300;
  --fw-regular: 400;
  --fw-bold: 700;

  /* Font Sizes - fluid */
  --fs-hero: clamp(2.5rem, 5vw, 4.5rem);
  --fs-h1: clamp(2rem, 4vw, 3rem);
  --fs-h2: clamp(1.5rem, 3vw, 2.25rem);
  --fs-h3: clamp(1.25rem, 2vw, 1.5rem);
  --fs-h4: clamp(1.1rem, 1.5vw, 1.25rem);
  --fs-body: clamp(0.95rem, 1.2vw, 1.05rem);
  --fs-small: 0.875rem;
  --fs-caption: 0.75rem;
  --fs-nav: 0.9rem;

  /* Line Heights */
  --lh-tight: 1.2;
  --lh-normal: 1.6;
  --lh-relaxed: 1.8;

  /* Spacing Scale */
  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --space-4xl: 8rem;

  /* Layout */
  --container-max: 1400px;
  --container-narrow: 900px;
  --container-padding: clamp(1.25rem, 4vw, 3rem);
  --grid-gap: clamp(1rem, 2.5vw, 2rem);

  /* Navbar */
  --nav-height: 80px;
  --nav-height-scrolled: 64px;

  /* Transitions */
  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-in-out: cubic-bezier(0.42, 0, 0.58, 1);
  --transition-fast: 0.2s var(--ease-out);
  --transition-medium: 0.4s var(--ease-out);
  --transition-slow: 0.6s var(--ease-out);
  --transition-carousel: 2s var(--ease-in-out);

  /* Borders */
  --radius-sm: 2px;
  --radius-md: 4px;

  /* Shadows */
  --shadow-subtle: 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.1);
  --shadow-nav: 0 1px 0 rgba(0, 0, 0, 0.08);

  /* Z-index Scale */
  --z-base: 1;
  --z-dropdown: 100;
  --z-nav: 1000;
  --z-overlay: 1100;
  --z-whatsapp: 1200;
  --z-modal: 1300;
  --z-lightbox: 1400;
  --z-page-transition: 1500;
}

/* ---- Dark Mode ---- */
[data-theme="dark"] {
  --color-bg-primary: #121212;
  --color-bg-secondary: #1e1e1e;
  --color-bg-dark: #0a0a0a;
  --color-bg-overlay: rgba(0, 0, 0, 0.7);
  --color-text-primary: #d0d0d0;
  --color-text-heading: #e8e8e8;
  --color-text-muted: #888888;
  --color-text-white: #ffffff;
  --color-accent: #4da3d9;
  --color-accent-hover: #3b8fc5;
  --color-border: #2a2a2a;
  --color-border-light: #222222;
  --shadow-subtle: 0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-nav: 0 1px 0 rgba(255, 255, 255, 0.05);
}