/* ==========================================================================
   The Tartan Bureau – Contemporary Highland Archive
   ========================================================================== */

/* 1. Tokens */
:root {
  /* Colors */
  --color-paper: #FCF9F2;
  --color-paper-warm: #F4EEE0;
  --color-ink: #3E362E;
  --color-ink-soft: #5c5045;
  --color-primary: #1A2233;       /* Heritage Ink Navy */
  --color-primary-deep: #0B1220;  /* Near-black ink */
  --color-secondary: #6B2D31;
  --color-accent: #9C6B2E;       /* Burnished Bronze (rich, deep gold) */
  --color-accent-soft: #C49A5A;  /* lighter bronze for subtle fills */
  --color-rule: #E0D8C8;
  --color-white: #FFFFFF;

  /* Typography */
  --font-serif: "Playfair Display", "Fraunces", Georgia, "Times New Roman", serif;
  --font-serif-alt: "Fraunces", Georgia, serif;
  --font-sans: "DM Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "DM Mono", ui-monospace, Menlo, monospace;

  /* Type Scale */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1.0625rem;
  --text-md: 1.25rem;
  --text-lg: 1.3rem;
  --text-xl: 1.65rem;
  --text-2xl: clamp(2rem, 4vw, 2.6rem);

  /* Spacing Scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2.5rem;
  --space-6: 4rem;
  --space-7: 6rem;
  --space-8: 8rem;

  /* Layout */
  --max-width: 72rem;
  
  /* Borders / Radii */
  --radius-sm: 2px;
  --radius-md: 4px;
}

/* 2. Reset */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body, h1, h2, h3, h4, p, ul, ol, figure, blockquote, dl, dd {
  margin: 0;
  padding: 0;
}

ul, ol {
  list-style: none;
}

img, picture {
  max-width: 100%;
  display: block;
}

/* 3. Base typography */
body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-ink);
  background-color: var(--color-paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  color: var(--color-primary);
  font-weight: 500;
  line-height: 1.2;
  margin-bottom: var(--space-3);
}

h1 { font-size: var(--text-2xl); letter-spacing: -0.02em; }
h2 { font-size: var(--text-xl); letter-spacing: -0.01em; margin-top: var(--space-5); }
h3 { font-size: var(--text-lg); margin-top: var(--space-4); }
h4 { font-size: var(--text-md); margin-top: var(--space-4); }

p {
  margin-bottom: var(--space-4);
  max-width: 65ch;
}

main.page ul, main.page ol {
  margin-bottom: var(--space-4);
  padding-left: var(--space-4);
}
main.page ul { list-style: disc; }
main.page ol { list-style: decimal; }
main.page li { margin-bottom: var(--space-2); max-width: 65ch; }

a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

a:hover, a:focus {
  color: var(--color-primary-deep);
  text-decoration-color: var(--color-accent);
}

strong, b {
  font-weight: 700;
}

/* 4. Layout */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.anchor-strip {
  height: 4px;
  background-color: var(--color-secondary);
}

/* 5. Header/Nav */
.site-header {
  border-bottom: 1px solid var(--color-rule);
  background: var(--color-paper);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
  gap: var(--space-4);
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--color-primary);
}

.brand-mark {
  display: block;
  width: 1.9rem;
  height: 1.9rem;
  flex: 0 0 auto;
}

.brand:hover, .brand:focus {
  text-decoration: none;
  color: var(--color-primary);
}

.wordmark {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4em;
  font-family: var(--font-serif);
  line-height: 1;
}

.wordmark .pre {
  font-size: 0.95rem;
  font-weight: 400;
  font-style: normal;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}

.wordmark .name {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.3rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  font-variant-ligatures: common-ligatures;
}

.nav {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.nav a {
  color: var(--color-ink-soft);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding-bottom: var(--space-1);
  border-bottom: 4px solid transparent;
  text-underline-offset: 5px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.nav a[aria-current="page"] {
  color: var(--color-primary);
  border-bottom-color: var(--color-accent);
}

.nav a:hover, .nav a:focus {
  color: var(--color-primary);
  border-bottom-color: var(--color-accent);
}

/* 6. Hero */
.hero {
  padding: var(--space-5) 0 var(--space-5);
  border-bottom: 1px solid var(--color-rule);
}

.hero-grid {
  display: block;
}

.hero--split .hero-grid {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: var(--space-6);
  align-items: center;
}

.hero-copy { min-width: 0; }

.hero h1 {
  max-width: 20ch;
  margin-bottom: var(--space-3);
}

.hero-image-wrap {
  width: 100%;
  border-radius: var(--radius-sm);
  background: var(--color-paper-warm);
  overflow: hidden;
}

.hero--split .hero-image-wrap { margin-top: 0; }

.hero-image-wrap img {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 4/3;
  object-fit: cover;
}

.hero--split .hero-image-wrap img { aspect-ratio: 4/3; }

/* 7. Sections */
main.page {
  padding: var(--space-6) 0 var(--space-6);
}

/* 8. Components */
.section-eyebrow {
  display: block;
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.lede {
  font-size: 1.15rem;
  line-height: 1.5;
  color: var(--color-ink-soft);
  max-width: 50ch;
  margin-bottom: var(--space-5);
}

.divider {
  height: 1px;
  background-color: var(--color-accent);
  margin: var(--space-6) 0;
  border: none;
}

.callout {
  background-color: var(--color-paper-warm);
  padding: var(--space-4);
  border-left: 4px solid var(--color-accent);
  margin-bottom: var(--space-4);
}

.tile-list {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  margin-top: var(--space-5);
  margin-bottom: var(--space-5);
}

.tile {
  background: var(--color-white);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-sm);
  padding: var(--space-4);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.tile:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.btn {
  display: inline-block;
  background-color: var(--color-primary);
  color: var(--color-white);
  text-decoration: none;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: background-color 0.2s ease, color 0.2s ease;
  border: none;
  cursor: pointer;
}

.btn:hover, .btn:focus {
  background-color: var(--color-accent);
  color: var(--color-white);
  text-decoration: none;
}

/* 9. CTA */
.cta {
  background-color: var(--color-paper-warm);
  border: 1px solid var(--color-rule);
  border-top: 4px solid var(--color-accent);
  padding: var(--space-5) var(--space-5);
  margin-top: var(--space-7);
  border-radius: var(--radius-sm);
  text-align: center;
}

.cta p {
  margin: 0 auto var(--space-4);
}

.cta strong {
  display: block;
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: var(--space-3);
}

.cta .email {
  font-family: var(--font-mono);
  font-size: var(--text-md);
  color: var(--color-accent);
  text-decoration: none;
  display: inline-block;
  margin-top: var(--space-2);
}

.cta .email:hover {
  color: var(--color-primary);
}

/* 10. Footer */
.site-footer {
  background-color: var(--color-paper-warm);
  border-top: 1px solid var(--color-rule);
  padding: var(--space-6) 0 var(--space-4);
}

.site-footer .container {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: 2fr 1fr 1fr;
}

.site-footer h4 {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: var(--text-base);
  color: var(--color-primary-deep);
  margin-bottom: var(--space-3);
}

.site-footer p {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  margin-bottom: var(--space-2);
}

.site-footer .nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.site-footer .nav a {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  text-transform: none;
  letter-spacing: normal;
  border-bottom: none;
  padding: 0;
  display: inline-block;
  width: fit-content;
}

.site-footer .nav a:hover, .site-footer .nav a:focus {
  color: var(--color-accent);
}

.legal {
  grid-column: 1 / -1;
  border-top: 1px solid var(--color-rule);
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  display: flex;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--color-ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* 11. Utilities */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* 12. Responsive */
@media (max-width: 720px) {
  :root {
    --space-6: 3rem;
    --space-7: 4rem;
    --space-8: 5rem;
  }
  
  .site-header .container {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-3);
  }
  
  .nav {
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: nowrap;
  }

  .nav a {
    font-size: 0.75rem;
    letter-spacing: 0.03em;
  }
  
  .site-footer .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .site-footer .nav {
    align-items: center;
  }
  
  .hero--split .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .hero--split .hero-copy { order: 1; }
  .hero--split .hero-image-wrap { order: 2; }

  .hero-image-wrap img {
    aspect-ratio: 16/9;
  }

  .cta {
    padding: var(--space-5) var(--space-3);
    margin-top: var(--space-5);
  }

  .cta .email {
    font-size: 0.85rem;
    overflow-wrap: break-word;
    word-break: break-word;
    max-width: 100%;
  }
}

/* 12. Tartan swatch grid */
.swatch-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin: var(--space-5) 0 var(--space-3);
}

.swatch {
  margin: 0;
}

.swatch img {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-sm);
}

.swatch figcaption {
  margin-top: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}

.swatch-note {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  font-style: italic;
  margin-top: 0;
}

@media (max-width: 640px) {
  .swatch-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-3); }
}

/* Editorial heading polish */
h1, h2 { font-weight: 600; }
.hero h1 { letter-spacing: -0.015em; line-height: 1.08; }
main.page h2 { letter-spacing: -0.01em; }

/* Centered editorial reading column */
.container--narrow {
  max-width: 45rem;
}