/* tokens.css - Institutional Gulf Pragmatism / Sovereign Capital */
:root {
  /* Palette */
  --color-deep-desert-night: #0D141C;
  --color-gold-reserve: #C8A360;
  --color-marble-white: #F8F9FA;
  --color-slate: #4A5568;
  --color-crimson: #9B1C1C;
  --color-pure-white: #FFFFFF;
  --color-dark-slate: #2D3748;

  /* Typography Scales */
  --font-family-display: 'Playfair Display', serif;
  --font-family-body: 'Public Sans', sans-serif;
  --font-family-mono: 'IBM Plex Mono', monospace;

  --text-xs: 0.75rem;     /* 12px */
  --text-sm: 0.875rem;    /* 14px */
  --text-base: 1rem;      /* 16px */
  --text-lg: 1.125rem;    /* 18px */
  --text-xl: 1.25rem;     /* 20px */
  --text-2xl: 1.5rem;     /* 24px */
  --text-3xl: 1.875rem;   /* 30px */
  --text-4xl: 2.25rem;    /* 36px */
  --text-5xl: 3rem;       /* 48px */
  --text-6xl: 3.75rem;    /* 60px */
  --text-7xl: 4.5rem;     /* 72px */

  --line-height-tight: 1.1;
  --line-height-snug: 1.3;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.8;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Borders & Shadows */
  --border-radius-sm: 2px;
  --border-radius: 4px;
  --shadow-subtle: 0 4px 6px -1px rgba(13, 20, 28, 0.1), 0 2px 4px -1px rgba(13, 20, 28, 0.06);
  --shadow-elevated: 0 10px 15px -3px rgba(13, 20, 28, 0.1), 0 4px 6px -2px rgba(13, 20, 28, 0.05);

  /* Layout */
  --container-width: 1200px;
  --container-narrow: 800px;
}

@font-face {
  font-family: 'Playfair Display';
  src: url('../fonts/playfair-display-latin-400-normal.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Playfair Display';
  src: url('../fonts/playfair-display-latin-600-normal.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Playfair Display';
  src: url('../fonts/playfair-display-latin-700-normal.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Public Sans';
  src: url('../fonts/public-sans-latin-400-normal.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Public Sans';
  src: url('../fonts/public-sans-latin-600-normal.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Public Sans';
  src: url('../fonts/public-sans-latin-700-normal.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'IBM Plex Mono';
  src: url('../fonts/ibm-plex-mono-latin-400-normal.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* Base Styles */
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: var(--font-family-body);
  background-color: var(--color-marble-white);
  color: var(--color-deep-desert-night);
  line-height: var(--line-height-normal);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-display);
  font-weight: 700;
  line-height: var(--line-height-tight);
  color: var(--color-deep-desert-night);
  margin-bottom: var(--space-4);
}
p { margin-bottom: var(--space-4); }
a { color: var(--color-deep-desert-night); text-decoration: underline; text-underline-offset: 4px; text-decoration-color: var(--color-gold-reserve); transition: color 0.2s, text-decoration-color 0.2s; }
a:hover { color: var(--color-crimson); text-decoration-color: var(--color-crimson); }
code { font-family: var(--font-family-mono); font-size: 0.9em; padding: 0.1em 0.3em; background: rgba(0,0,0,0.05); border-radius: 2px; }
.container { max-width: var(--container-width); margin: 0 auto; padding: 0 var(--space-4); }
.container-narrow { max-width: var(--container-narrow); margin: 0 auto; padding: 0 var(--space-4); }

/* Utilities */
.text-gold { color: var(--color-gold-reserve); }
.text-crimson { color: var(--color-crimson); }
.bg-dark { background-color: var(--color-deep-desert-night); color: var(--color-marble-white); }
.bg-dark h1, .bg-dark h2, .bg-dark h3, .bg-dark h4 { color: var(--color-marble-white); }
.bg-dark a { color: var(--color-gold-reserve); text-decoration-color: rgba(200, 163, 96, 0.5); }
.bg-dark a:hover { color: var(--color-marble-white); text-decoration-color: var(--color-marble-white); }

.button {
  display: inline-block;
  background-color: var(--color-deep-desert-night);
  color: var(--color-marble-white) !important;
  padding: var(--space-3) var(--space-6);
  text-decoration: none;
  font-weight: 600;
  border: 1px solid var(--color-deep-desert-night);
  transition: all 0.2s ease;
  font-family: var(--font-family-body);
}
.button:hover { background-color: var(--color-marble-white); color: var(--color-deep-desert-night) !important; }
.button-gold {
  background-color: var(--color-gold-reserve);
  color: var(--color-deep-desert-night) !important;
  border-color: var(--color-gold-reserve);
}
.button-gold:hover {
  background-color: transparent;
  color: var(--color-gold-reserve) !important;
}

/* Site Header */
.site-header {
  padding: var(--space-4) 0;
  border-bottom: 1px solid rgba(13, 20, 28, 0.1);
  background: var(--color-marble-white);
  position: sticky;
  top: 0;
  z-index: 100;
}
.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.site-logo {
  font-family: var(--font-family-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  text-decoration: none;
  color: var(--color-deep-desert-night);
  letter-spacing: -0.02em;
}
.site-nav {
  display: flex;
  gap: var(--space-6);
}
.site-nav a {
  text-decoration: none;
  font-weight: 600;
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-slate);
}
.site-nav a:hover, .site-nav a.active {
  color: var(--color-deep-desert-night);
}

/* Site Footer */
.site-footer {
  background-color: var(--color-deep-desert-night);
  color: var(--color-slate);
  padding: var(--space-16) 0 var(--space-8);
  margin-top: var(--space-32);
}
.site-footer h4 { color: var(--color-marble-white); font-size: var(--text-lg); }
.site-footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: var(--space-8); }
.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: var(--space-2); }
.site-footer a { color: var(--color-slate); text-decoration: none; }
.site-footer a:hover { color: var(--color-gold-reserve); }
.site-footer-bottom { margin-top: var(--space-12); padding-top: var(--space-4); border-top: 1px solid rgba(255,255,255,0.1); font-size: var(--text-sm); display: flex; justify-content: space-between; }

/* Grid Layouts */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-8); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-8); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .site-header .container { flex-direction: column; gap: var(--space-4); }
  .site-nav { flex-wrap: wrap; justify-content: center; gap: var(--space-4); }
  :root {
    --text-5xl: 2.5rem;
    --text-6xl: 3rem;
    --text-7xl: 3.5rem;
    --space-24: 4rem;
    --space-32: 5rem;
  }
}

/* Tool Components */
.calculator-card {
  background: var(--color-pure-white);
  border: 1px solid rgba(13, 20, 28, 0.1);
  padding: var(--space-8);
  box-shadow: var(--shadow-subtle);
}
.form-group { margin-bottom: var(--space-4); }
.form-group label { display: block; font-weight: 600; margin-bottom: var(--space-2); font-size: var(--text-sm); }
.form-group input, .form-group select {
  width: 100%;
  padding: var(--space-3);
  border: 1px solid var(--color-slate);
  background: var(--color-marble-white);
  font-family: var(--font-family-body);
  font-size: var(--text-base);
}
.form-group input:focus, .form-group select:focus {
  outline: none;
  border-color: var(--color-gold-reserve);
  box-shadow: 0 0 0 2px rgba(200, 163, 96, 0.2);
}
.calc-result {
  margin-top: var(--space-6);
  padding: var(--space-6);
  background: var(--color-deep-desert-night);
  color: var(--color-marble-white);
  text-align: center;
}
.calc-result .value {
  font-family: var(--font-family-mono);
  font-size: var(--text-4xl);
  color: var(--color-gold-reserve);
  display: block;
  margin-top: var(--space-2);
}

/* Motif: Editorial Line */
.editorial-line {
  width: 60px;
  height: 4px;
  background-color: var(--color-gold-reserve);
  margin-bottom: var(--space-6);
}