/*
  Engine Profit — Design Tokens
  Luxury Editorial: warm near-black + single muted-gold accent.
  One accent color, one radius system, one shadow language — locked project-wide.
*/

:root {
  /* ---- Color: surfaces (warm near-black, never pure #000) ---- */
  --color-bg: #0b0a08;
  --color-bg-elevated: #121009;
  --color-surface: #17140f;
  --color-surface-2: #1d1a13;
  --color-surface-glass: rgba(23, 20, 15, 0.55);

  /* ---- Color: borders ---- */
  --color-border: #2b2619;
  --color-border-strong: #3c3524;
  --color-border-glass: rgba(243, 239, 230, 0.08);

  /* ---- Color: text (warm off-white, never pure #fff) ---- */
  --color-text-primary: #f3efe4;
  --color-text-secondary: #b8b0a0;
  --color-text-muted: #7d7565;
  --color-text-on-gold: #17140a;

  /* ---- Color: accent (single locked accent) ---- */
  --color-gold: #c7a455;
  --color-gold-hover: #dab96c;
  --color-gold-soft: rgba(199, 164, 85, 0.12);
  --color-gold-border: rgba(199, 164, 85, 0.35);

  /* ---- Color: semantic ---- */
  --color-success: #7fae83;
  --color-error: #c9635b;
  --color-error-soft: rgba(201, 99, 91, 0.12);
  --color-warning: #cc9a4e;

  /* ---- Typography ---- */
  --font-display: "Playfair Display", "Iowan Old Style", Georgia, "Times New Roman", serif;
  --font-body: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.3125rem;
  --text-2xl: 1.625rem;
  --text-3xl: 2.0625rem;
  --text-4xl: 2.625rem;
  --text-5xl: clamp(2.75rem, 4.4vw, 3.75rem);
  --text-6xl: clamp(3.25rem, 5.6vw, 4.5rem);

  --leading-tight: 1.12;
  --leading-snug: 1.32;
  --leading-normal: 1.6;
  --tracking-tight: -0.02em;
  --tracking-wide: 0.08em;
  --tracking-wider: 0.16em;

  /* ---- Spacing (fluid section rhythm) ---- */
  --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;

  --section-padding-y: clamp(4.5rem, 9vw, 7.5rem);
  --section-padding-x: clamp(1.25rem, 5vw, 3rem);
  --container-max: 1240px;
  --container-max-narrow: 860px;

  /* ---- Shape (one radius system, locked) ---- */
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --radius-full: 999px;

  /* ---- Shadow (tinted to background hue, no pure black) ---- */
  --shadow-sm: 0 1px 2px rgba(6, 5, 3, 0.5);
  --shadow-md: 0 16px 40px -16px rgba(6, 5, 3, 0.65);
  --shadow-lg: 0 30px 70px -20px rgba(6, 5, 3, 0.7);
  --shadow-gold: 0 12px 30px -12px rgba(199, 164, 85, 0.28);

  /* ---- Motion ---- */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 180ms;
  --duration-base: 320ms;
  --duration-slow: 560ms;

  /* ---- Z-index scale (systemic layers only) ---- */
  --z-base: 1;
  --z-sticky-nav: 40;
  --z-overlay: 60;
  --z-preloader: 100;
}