/* === Design Tokens & Custom Properties === */

:root {
  /* --- Colors: Dark Theme (default) --- */
  --color-bg: #0a0a0a;
  --color-bg-elevated: #141414;
  --color-surface: #1e1e1e;
  --color-surface-hover: #282828;
  --color-border: #2a2a2a;
  --color-border-light: #333333;
  --color-text: #e8e6e3;
  --color-text-secondary: #b0aea9;
  --color-text-muted: #6b6b6b;
  --color-accent: #c9a96e;
  --color-accent-hover: #d4b87a;
  --color-accent-muted: rgba(201, 169, 110, 0.15);
  --color-overlay: rgba(0, 0, 0, 0.94);
  --color-overlay-light: rgba(0, 0, 0, 0.6);

  /* --- Typography --- */
  --font-heading: Georgia, 'Times New Roman', serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;

  --fs-hero: clamp(2.8rem, 6vw, 5.5rem);
  --fs-h1: clamp(2rem, 4vw, 3.2rem);
  --fs-h2: clamp(1.5rem, 3vw, 2.2rem);
  --fs-h3: 1.25rem;
  --fs-body: 1rem;
  --fs-small: 0.875rem;
  --fs-caption: 0.75rem;
  --fs-nav: 0.9375rem;

  --fw-light: 300;
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;

  --lh-tight: 1.15;
  --lh-normal: 1.6;
  --lh-relaxed: 1.8;

  --letter-spacing-heading: -0.02em;
  --letter-spacing-nav: 0.04em;
  --letter-spacing-caption: 0.06em;

  /* --- Spacing --- */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 4rem;
  --space-2xl: 8rem;
  --space-section: clamp(4rem, 10vw, 8rem);

  /* --- Layout --- */
  --max-width: 1400px;
  --nav-height: 70px;
  --container-padding: clamp(1rem, 5vw, 3rem);

  /* --- Transitions --- */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;
  --duration-very-slow: 800ms;

  /* --- Borders & Radii --- */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-round: 50%;

  /* --- Shadows --- */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 16px 60px rgba(0, 0, 0, 0.6);

  /* --- Z-index layers --- */
  --z-nav: 1000;
  --z-lightbox: 2000;
  --z-menu: 1500;
  --z-to-top: 900;
}

/* --- Light Theme --- */
[data-theme="light"] {
  --color-bg: #fafaf8;
  --color-bg-elevated: #f2f1ed;
  --color-surface: #ffffff;
  --color-surface-hover: #f5f4f0;
  --color-border: #e2e0da;
  --color-border-light: #ebe9e3;
  --color-text: #1a1a1a;
  --color-text-secondary: #555555;
  --color-text-muted: #8a8a8a;
  --color-accent: #b8943d;
  --color-accent-hover: #a38334;
  --color-accent-muted: rgba(184, 148, 61, 0.1);
  --color-overlay: rgba(255, 252, 245, 0.96);
  --color-overlay-light: rgba(0, 0, 0, 0.3);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 16px 60px rgba(0, 0, 0, 0.15);
}