/* Sanctuary Protocol — Site Styles */

:root {
  --color-bg: #0a0a0f;
  --color-surface: #12121a;
  --color-border: #1e1e2e;
  --color-text: #e0e0e8;
  --color-text-muted: #8888a0;
  --color-accent: #6c8cff;
  --color-accent-dim: #4a6ad0;
  --color-heading: #f0f0f8;
  --color-code-bg: #1a1a28;
  --font-body: 'Georgia', 'Times New Roman', serif;
  --font-heading: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  --max-width: 720px;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 18px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Navigation */
.site-nav {
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  background: rgba(10, 10, 15, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 100;
}

.nav-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-heading);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--color-accent);
}

/* Main content */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 2rem;
  flex: 1;
  width: 100%;
}

/* Homepage */
.hero {
  padding: 4rem 0 3rem;
  text-align: center;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--color-heading);
  line-height: 1.2;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.hero .subtitle {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto 2.5rem;
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  padding: 0.7rem 1.6rem;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-accent-dim);
}

.btn-secondary {
  background: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
}

/* Layers grid */
.layers {
  padding: 3rem 0;
}

.layers h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--color-heading);
  margin-bottom: 2rem;
  text-align: center;
}

.layer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}

.layer-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.5rem;
}

.layer-card h3 {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.layer-card p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* Install block */
.install {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 2rem;
  margin: 3rem 0;
  text-align: center;
}

.install h2 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  color: var(--color-heading);
  margin-bottom: 1rem;
}

.install code {
  font-family: var(--font-mono);
  font-size: 1rem;
  background: var(--color-code-bg);
  padding: 0.8rem 1.5rem;
  border-radius: 6px;
  display: inline-block;
  color: var(--color-accent);
}

/* Blog listing */
.post-list {
  list-style: none;
  padding: 0;
}

.post-list li {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

.post-list li:last-child {
  border-bottom: none;
}

.post-list a {
  text-decoration: none;
}

.post-list h2 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  color: var(--color-heading);
  margin-bottom: 0.4rem;
  font-weight: 600;
}

.post-list .post-date {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.post-list .post-excerpt {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-top: 0.5rem;
}

/* Article / Post */
.post-header {
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
}

.post-header h1 {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-heading);
  line-height: 1.25;
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

.post-meta {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  display: flex;
  gap: 1.5rem;
}

.post-content h2 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--color-heading);
  margin: 2.5rem 0 1rem;
  letter-spacing: -0.01em;
}

.post-content h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-heading);
  margin: 2rem 0 0.8rem;
}

.post-content p {
  margin-bottom: 1.3rem;
}

.post-content strong {
  color: var(--color-heading);
  font-weight: 600;
}

.post-content a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.post-content a:hover {
  color: var(--color-accent-dim);
}

.post-content ul, .post-content ol {
  margin: 1rem 0 1.5rem 1.5rem;
}

.post-content li {
  margin-bottom: 0.5rem;
}

.post-content blockquote {
  border-left: 3px solid var(--color-accent);
  padding: 0.5rem 1.5rem;
  margin: 1.5rem 0;
  color: var(--color-text-muted);
  font-style: italic;
}

.post-content code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--color-code-bg);
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
  color: var(--color-accent);
}

.post-content pre {
  background: var(--color-code-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.2rem 1.5rem;
  margin: 1.5rem 0;
  overflow-x: auto;
}

.post-content pre code {
  background: none;
  padding: 0;
  font-size: 0.85rem;
  color: var(--color-text);
}

.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9rem;
}

.post-content th {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-heading);
  text-align: left;
  padding: 0.7rem 1rem;
  border-bottom: 2px solid var(--color-border);
}

.post-content td {
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--color-border);
}

.post-content hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 3rem 0;
}

.post-footer {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.post-footer a {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  color: var(--color-accent);
  text-decoration: none;
}

.post-footer a:hover {
  text-decoration: underline;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 2rem;
  margin-top: auto;
}

.footer-inner {
  max-width: 960px;
  margin: 0 auto;
  text-align: center;
}

.site-footer p {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* Responsive */
@media (max-width: 640px) {
  html {
    font-size: 16px;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .post-header h1 {
    font-size: 1.7rem;
  }

  .layer-grid {
    grid-template-columns: 1fr;
  }

  .nav-links {
    gap: 1rem;
  }

  main {
    padding: 2rem 1.2rem;
  }
}