:root {
  --color-cream: #F9F6F0;
  --color-cream-dark: #F1EDE5;
  --color-iron: #1F2937;
  --color-iron-light: #374151;
  --color-iron-dark: #111827;
  --color-copper: #C17A3A;
  --color-copper-hover: #A6652E;
  --color-copper-light: #E8C9A8;
  --color-emerald: #059669;
  --color-emerald-hover: #047857;
  --color-emerald-light: #D1FAE5;
  --color-border: #E5E0D8;
  --color-muted: #6B7280;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background-color: var(--color-cream);
  color: var(--color-iron);
  font-family: system-ui, sans-serif;
  line-height: 1.6;
}

h1, h2, h3 { color: var(--color-iron); line-height: 1.25; }

a { color: var(--color-copper); text-decoration: none; transition: color 0.15s ease; }
a:hover { color: var(--color-copper-hover); }

.site-header { max-width: 1400px; margin: 0 auto; padding: 1.5rem 1.5rem 0; }
.site-header .brand {
  display: flex; align-items: center; gap: 1rem;
  padding-bottom: 1rem; border-bottom: 1px solid var(--color-border);
}
.site-header .brand img { height: clamp(48px, 6vw, 80px); width: auto; }
.site-header .site-title { color: var(--color-iron); }
.site-header h1 { margin: 0; }
.site-header p { margin: .25rem 0 0; }

.page {
  display: grid;
  grid-template-columns: clamp(200px, 20vw, 300px) 1fr;
  gap: 2rem;
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.5rem;
}

.sidebar {
  position: sticky; top: 1.5rem; align-self: start;
  background: var(--color-emerald); color: white;
  border-radius: 8px; padding: 1.5rem;
}
.sidebar h3 { color: white; margin-top: 0; }
.sidebar nav a {
  display: block; color: white;
  padding: .4rem .6rem; margin: 0 -.6rem .25rem;
  border-radius: 6px; font-weight: 500;
}
.sidebar nav a:hover { background: var(--color-emerald-hover); color: white; }

main { min-width: 0; }
footer {
  grid-column: 1 / -1;
  border-top: 1px solid var(--color-border);
  padding-top: 1rem; font-size: .85rem;
}

.card {
  background-color: var(--color-cream-dark);
  border: 1px solid var(--color-border);
  border-radius: 8px; padding: 1.5rem; margin-bottom: 1.5rem;
}
.card h2 { margin-top: 0; }
.card h2 a { color: var(--color-iron); }
.card h2 a:hover { color: var(--color-copper); }

.button-primary, .button-secondary {
  display: inline-block; color: white;
  padding: 0.6rem 1.2rem; border: none; border-radius: 6px;
  transition: background-color 0.15s ease;
}
.button-primary { background-color: var(--color-copper); }
.button-primary:hover { background-color: var(--color-copper-hover); color: white; }
.button-secondary { background-color: var(--color-emerald); }
.button-secondary:hover { background-color: var(--color-emerald-hover); color: white; }

.meta { color: var(--color-muted); font-size: 0.9rem; }
code { background: var(--color-copper-light); padding: .1rem .3rem; border-radius: 4px; }

@media (max-width: 800px) {
  .page { grid-template-columns: 1fr; }
  .sidebar { position: static; }
}