/* ===== LODSTONE ENGINE — BEDROCK THEME ===== */

:root {
  --bg-deep: #0F1419;
  --bg-surface: #1A2332;
  --bg-surface-hover: #222D3E;
  --color-primary: #E8A838;
  --color-primary-hover: #F0B84E;
  --color-secondary: #6B829E;
  --color-accent: #4CAF50;
  --text-primary: #E8E6E3;
  --text-secondary: #8899AA;
  --text-code: #8BD49C;
  --border: #2A3544;
  --font-heading: 'Fira Code', 'Courier New', monospace;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-code: 'Fira Code', 'Courier New', monospace;
  --max-width: 1200px;
  --nav-height: 64px;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-hover); }

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== NAVIGATION ===== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(15, 20, 25, 0.95);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
  z-index: 100;
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 18px;
}

.logo-mark {
  color: var(--color-primary);
  font-size: 20px;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-link {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

.btn-gh {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  transition: all 0.2s;
}

.btn-gh:hover {
  border-color: var(--color-secondary);
  color: var(--text-primary);
}

/* ===== BUTTONS ===== */

.btn-primary {
  display: inline-block;
  padding: 12px 28px;
  background: var(--color-primary);
  color: var(--bg-deep);
  font-weight: 600;
  font-size: 15px;
  border-radius: 6px;
  transition: background 0.2s;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  color: var(--bg-deep);
}

.btn-secondary {
  display: inline-block;
  padding: 12px 28px;
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-weight: 500;
  font-size: 15px;
  border-radius: 6px;
  transition: all 0.2s;
}

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

/* ===== HERO ===== */

.hero {
  padding: calc(var(--nav-height) + 80px) 0 80px;
  text-align: center;
}

.hero-content {
  max-width: 700px;
  margin: 0 auto;
  padding: 0 24px;
}

.hero-badge {
  display: inline-block;
  padding: 4px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 13px;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 24px;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 64px;
  font-weight: 600;
  line-height: 1.1;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.hero-sub {
  color: var(--color-primary);
}

.hero-tagline {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
}

/* ===== SECTION TITLES ===== */

.section-title {
  font-family: var(--font-heading);
  font-size: 28px;
  font-weight: 600;
  margin-bottom: 40px;
  color: var(--text-primary);
}

/* ===== FEATURES GRID ===== */

.features-grid {
  padding: 80px 0;
}

.grid.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 28px;
  transition: border-color 0.2s;
}

.feature-card:hover {
  border-color: var(--color-secondary);
}

.feature-icon {
  font-size: 28px;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.feature-card h3 {
  font-family: var(--font-heading);
  font-size: 16px;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ===== HARDWARE ===== */

.hardware {
  padding: 80px 0;
  background: var(--bg-surface);
}

.hardware-showcase {
  max-width: 600px;
}

.hardware-detail h3 {
  font-family: var(--font-heading);
  font-size: 22px;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.hardware-specs {
  list-style: none;
  margin-bottom: 16px;
}

.hardware-specs li {
  padding: 4px 0;
  color: var(--text-secondary);
  font-size: 14px;
}

.hardware-specs li::before {
  content: "→ ";
  color: var(--color-primary);
}

.hardware-note {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  border-left: 3px solid var(--color-primary);
  padding-left: 16px;
}

/* ===== CODE BLOCKS ===== */

.code-block {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  margin: 24px 0;
}

.code-header {
  padding: 8px 16px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.code-body {
  padding: 16px;
  background: #0B0F14;
}

.code-body pre {
  margin: 0;
}

.code-body code {
  font-family: var(--font-code);
  font-size: 13px;
  color: var(--text-code);
  line-height: 1.6;
}

/* ===== CTA ===== */

.cta {
  padding: 80px 0;
}

.cta-content {
  text-align: center;
  max-width: 500px;
  margin: 0 auto;
}

.cta-content h2 {
  font-family: var(--font-heading);
  font-size: 28px;
  margin-bottom: 12px;
}

.cta-content p {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
}

/* ===== PAGE HEADER ===== */

.page-header {
  padding: calc(var(--nav-height) + 60px) 0 40px;
  border-bottom: 1px solid var(--border);
}

.page-header h1 {
  font-family: var(--font-heading);
  font-size: 36px;
  margin-bottom: 8px;
}

.page-header p {
  font-size: 16px;
  color: var(--text-secondary);
}

/* ===== FEATURES DETAIL ===== */

.features-detail {
  padding: 60px 0;
}

.feature-detail-block {
  display: flex;
  gap: 24px;
  padding: 36px 0;
  border-bottom: 1px solid var(--border);
}

.feature-detail-block:last-child {
  border-bottom: none;
}

.feature-detail-icon {
  font-size: 32px;
  color: var(--color-primary);
  flex-shrink: 0;
  width: 48px;
  text-align: center;
}

.feature-detail-content h2 {
  font-family: var(--font-heading);
  font-size: 20px;
  margin-bottom: 12px;
}

.feature-detail-content p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.6;
  margin-bottom: 8px;
}

/* ===== STATS ===== */

.feature-stats {
  padding: 60px 0;
  background: var(--bg-surface);
}

.stats-grid {
  display: flex;
  gap: 48px;
  justify-content: center;
  text-align: center;
  margin-bottom: 16px;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 42px;
  color: var(--color-primary);
  font-weight: 600;
}

.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.stat-note {
  text-align: center;
  font-size: 13px;
  color: var(--text-secondary);
}

/* ===== SAMPLES ===== */

.samples-gallery {
  padding: 60px 0;
}

.samples-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.sample-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
}

.sample-card h3 {
  font-family: var(--font-heading);
  font-size: 18px;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.sample-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 12px;
}

.sample-status {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

.sample-status.hardware-tested {
  background: rgba(76, 175, 80, 0.15);
  color: var(--color-accent);
}

.sample-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tag {
  padding: 2px 10px;
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 12px;
  color: var(--text-secondary);
}

.samples-note {
  text-align: center;
  margin-top: 40px;
  font-size: 14px;
  color: var(--text-secondary);
}

/* ===== COMMUNITY ===== */

.community-content {
  padding: 60px 0;
}

.community-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.community-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 28px;
}

.community-card h3 {
  font-family: var(--font-heading);
  font-size: 18px;
  margin-bottom: 12px;
  color: var(--color-primary);
}

.community-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 8px;
}

.community-card ul {
  padding-left: 20px;
}

.community-card li {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  line-height: 1.5;
}

/* ===== ABOUT ===== */

.about-content {
  padding: 60px 0;
}

.about-prose {
  max-width: 720px;
}

.about-prose h2 {
  font-family: var(--font-heading);
  font-size: 22px;
  margin-top: 40px;
  margin-bottom: 16px;
  color: var(--color-primary);
}

.about-prose h2:first-child {
  margin-top: 0;
}

.about-prose p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 12px;
}

/* ===== DOCS ===== */

.docs-content {
  padding: 60px 0;
}

.docs-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 40px;
}

.docs-sidebar ul {
  list-style: none;
  position: sticky;
  top: calc(var(--nav-height) + 24px);
}

.docs-sidebar li {
  margin-bottom: 8px;
}

.docs-sidebar a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color 0.2s;
}

.docs-sidebar a:hover, .docs-sidebar a.active {
  color: var(--color-primary);
}

.docs-main h2 {
  font-family: var(--font-heading);
  font-size: 22px;
  margin-top: 36px;
  margin-bottom: 16px;
  color: var(--color-primary);
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.docs-main h2:first-child {
  border-top: none;
  padding-top: 0;
}

.docs-main h3 {
  font-size: 17px;
  margin-top: 24px;
  margin-bottom: 12px;
}

.docs-main p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 12px;
}

.docs-main ul {
  padding-left: 24px;
  margin-bottom: 12px;
}

.docs-main li {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.subsystem-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin: 16px 0;
}

.subsystem {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 16px;
}

.subsystem h4 {
  font-family: var(--font-heading);
  font-size: 14px;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.subsystem p {
  font-size: 13px;
  margin-bottom: 0;
}

/* ===== FOOTER ===== */

.site-footer {
  padding: 60px 0 30px;
  border-top: 1px solid var(--border);
  margin-top: 60px;
}

.footer-container {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h4 {
  font-family: var(--font-heading);
  font-size: 14px;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.footer-tagline {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 6px;
}

.footer-col a {
  font-size: 13px;
  color: var(--text-secondary);
}

.footer-col a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-secondary);
}

/* ===== RESPONSIVE ===== */

@media (max-width: 768px) {
  .nav-links { display: none; }
  .hero-title { font-size: 40px; }
  .docs-grid { grid-template-columns: 1fr; }
  .footer-container { grid-template-columns: 1fr 1fr; }
  .feature-detail-block { flex-direction: column; }
  .stats-grid { flex-wrap: wrap; gap: 24px; }
}