/* Rigel's Revenge - Historical Reference Website
   Dark retro-modern theme inspired by C64 aesthetics */

:root {
  --bg-primary: #0a0a12;
  --bg-secondary: #12121e;
  --bg-card: #1a1a2e;
  --bg-code: #0d0d18;
  --text-primary: #c8c8d4;
  --text-secondary: #8888a0;
  --text-heading: #e8e8f0;
  --accent-cyan: #6ec6ff;
  --accent-yellow: #ffe066;
  --accent-green: #66ff99;
  --accent-purple: #b088ff;
  --accent-pink: #ff66aa;
  --accent-red: #ff6666;
  --border-color: #2a2a3e;
  --nav-bg: #08080e;
  --link-color: #6ec6ff;
  --link-hover: #ffe066;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Cascadia Code", "JetBrains Mono", "Consolas", monospace;
  --max-width: 960px;
  --nav-height: 56px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-height) + 24px);
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 16px;
  min-height: 100vh;
}

/* Navigation */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nav-bg);
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(12px);
}

nav .nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  height: var(--nav-height);
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}

nav .nav-inner::-webkit-scrollbar {
  display: none;
}

nav .nav-brand {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 14px;
  color: var(--accent-cyan);
  text-decoration: none;
  white-space: nowrap;
  letter-spacing: 0.5px;
  flex-shrink: 0;
  margin-right: 16px;
}

nav .nav-brand:hover {
  color: var(--accent-yellow);
}

nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  padding: 6px 12px;
  border-radius: 6px;
  white-space: nowrap;
  transition: color 0.2s, background 0.2s;
}

nav a:hover,
nav a.active {
  color: var(--text-heading);
  background: var(--bg-card);
}

/* Main content */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 24px 96px;
}

/* Typography */
h1 {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 8px;
  letter-spacing: -0.5px;
  line-height: 1.2;
}

h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-heading);
  margin-top: 56px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
}

h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--accent-cyan);
  margin-top: 32px;
  margin-bottom: 12px;
}

h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent-yellow);
  margin-top: 24px;
  margin-bottom: 8px;
}

p {
  margin-bottom: 16px;
}

.subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.lead {
  font-size: 1.1rem;
  color: var(--text-primary);
  line-height: 1.8;
  margin-bottom: 24px;
}

/* Links */
a {
  color: var(--link-color);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--link-hover);
}

/* Blockquotes (game text) */
blockquote {
  border-left: 3px solid var(--accent-cyan);
  background: var(--bg-code);
  padding: 16px 20px;
  margin: 16px 0 24px;
  border-radius: 0 8px 8px 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--accent-green);
}

blockquote.death {
  border-left-color: var(--accent-red);
  color: var(--accent-pink);
}

blockquote.dialogue {
  border-left-color: var(--accent-yellow);
  color: var(--accent-yellow);
}

blockquote.system {
  border-left-color: var(--accent-purple);
  color: var(--accent-purple);
}

blockquote cite {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  color: var(--text-secondary);
  font-style: normal;
}

/* Code blocks */
pre {
  background: var(--bg-code);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 16px 20px;
  overflow-x: auto;
  margin: 16px 0 24px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.5;
  color: var(--accent-green);
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--bg-code);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--accent-cyan);
}

pre code {
  background: none;
  padding: 0;
  border-radius: 0;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0 24px;
  font-size: 14px;
}

th {
  text-align: left;
  padding: 10px 14px;
  background: var(--bg-card);
  color: var(--accent-cyan);
  font-weight: 600;
  border-bottom: 2px solid var(--border-color);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-color);
  vertical-align: top;
}

tr:hover td {
  background: rgba(110, 198, 255, 0.03);
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  margin: 16px 0;
}

.card h3 {
  margin-top: 0;
}

/* Grid layouts */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 16px 0;
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
  margin: 16px 0;
}

/* Hero section */
.hero {
  text-align: center;
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 48px;
}

.hero h1 {
  font-size: 3rem;
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.hero .tagline {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 24px;
}

.hero .meta {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

/* Section cards for homepage */
.section-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 32px 0;
}

.section-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 28px;
  text-decoration: none;
  transition: border-color 0.2s, transform 0.15s;
  display: block;
}

.section-card:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-2px);
}

.section-card h3 {
  margin: 0 0 8px;
  color: var(--text-heading);
  font-size: 1.1rem;
}

.section-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 0;
  line-height: 1.5;
}

.section-card .card-tag {
  display: inline-block;
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--accent-yellow);
  background: rgba(255, 224, 102, 0.1);
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Image gallery */
.gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 24px 0;
}

.gallery-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
}

.gallery-item img {
  width: 100%;
  display: block;
  image-rendering: pixelated;
  background: #000;
}

.gallery-item .caption {
  padding: 12px 16px;
  font-size: 13px;
  color: var(--text-secondary);
}

.gallery-item .caption strong {
  color: var(--text-heading);
  display: block;
  margin-bottom: 4px;
}

/* Map / ASCII art */
.ascii-map {
  background: var(--bg-code);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 24px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.4;
  color: var(--accent-cyan);
  white-space: pre;
  margin: 16px 0 24px;
}

/* Score table */
.score-table td:nth-child(2),
.score-table td:nth-child(3),
.score-table th:nth-child(2),
.score-table th:nth-child(3) {
  text-align: right;
  font-family: var(--font-mono);
}

/* Memory map */
.memory-map {
  font-family: var(--font-mono);
  font-size: 13px;
}

.memory-map td:first-child {
  color: var(--accent-yellow);
  white-space: nowrap;
}

/* Tags / labels */
.tag {
  display: inline-block;
  font-size: 11px;
  font-family: var(--font-mono);
  padding: 2px 8px;
  border-radius: 4px;
  margin-right: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tag-easter-egg {
  color: var(--accent-yellow);
  background: rgba(255, 224, 102, 0.1);
}

.tag-bug {
  color: var(--accent-red);
  background: rgba(255, 102, 102, 0.1);
}

.tag-cut {
  color: var(--accent-purple);
  background: rgba(176, 136, 255, 0.1);
}

.tag-technical {
  color: var(--accent-cyan);
  background: rgba(110, 198, 255, 0.1);
}

/* Lists */
ul, ol {
  margin: 8px 0 16px;
  padding-left: 24px;
}

li {
  margin-bottom: 6px;
}

li::marker {
  color: var(--text-secondary);
}

/* Horizontal rule */
hr {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 48px 0;
}

/* Stats row */
.stats {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin: 24px 0;
}

.stat {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px 24px;
  text-align: center;
  flex: 1;
  min-width: 140px;
}

.stat .stat-value {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-cyan);
  display: block;
}

.stat .stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* TOC */
.toc {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px 28px;
  margin: 24px 0;
}

.toc h3 {
  margin: 0 0 12px;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
}

.toc ol {
  margin: 0;
  padding-left: 20px;
}

.toc li {
  margin-bottom: 4px;
}

.toc a {
  font-size: 14px;
}

/* Footer */
footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 32px 24px;
  border-top: 1px solid var(--border-color);
  text-align: center;
  font-size: 13px;
  color: var(--text-secondary);
}

footer .footer-brand {
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  font-size: 12px;
  letter-spacing: 1px;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }

  h1 {
    font-size: 1.8rem;
  }

  h2 {
    font-size: 1.3rem;
  }

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

  .grid-2, .gallery {
    grid-template-columns: 1fr;
  }

  .grid-3 {
    grid-template-columns: 1fr;
  }

  .stats {
    gap: 12px;
  }

  .stat {
    min-width: 100px;
  }

  nav .nav-inner {
    padding: 0 12px;
  }

  main {
    padding: 32px 16px 64px;
  }

  pre, .ascii-map {
    font-size: 11px;
    padding: 12px;
  }
}

@media (max-width: 480px) {
  .stats {
    flex-direction: column;
  }
}