/* ========================================
   RETRONIAN - Retro Gaming + Alien + Cyberpunk
   ======================================== */

:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111318;
  --bg-card: #151921;
  --bg-code: #0d1117;
  --text-primary: #e0e0e0;
  --text-secondary: #8b949e;
  --text-muted: #484f58;
  --accent: #39ff14;
  --accent-dim: #2bcc10;
  --accent-glow: rgba(57, 255, 20, 0.3);
  --accent-glow-strong: rgba(57, 255, 20, 0.6);
  --border: #21262d;
  --border-accent: rgba(57, 255, 20, 0.2);
  --font-heading: 'Press Start 2P', monospace;
  --font-mono: 'Space Mono', monospace;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --max-width: 860px;
  --header-height: 64px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 16px;
  min-height: 100vh;
  /* Circuit board grid background */
  background-image:
    linear-gradient(rgba(57, 255, 20, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 255, 20, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease, text-shadow 0.2s ease;
}

a:hover {
  color: #5fff44;
  text-shadow: 0 0 8px var(--accent-glow);
}

img {
  max-width: 100%;
  height: auto;
}

/* ========================================
   HEADER
   ======================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: var(--header-height);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--text-primary);
}

.site-logo:hover {
  color: var(--accent);
  text-shadow: 0 0 12px var(--accent-glow);
}

.logo-icon {
  font-size: 1.5rem;
}

.logo-text {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  letter-spacing: 1px;
}

.site-nav {
  display: flex;
  gap: 2rem;
}

.site-nav a {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 0.25rem 0;
  position: relative;
}

.site-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent-glow);
  transition: width 0.3s ease;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--accent);
  text-shadow: 0 0 8px var(--accent-glow);
}

.site-nav a:hover::after,
.site-nav a.active::after {
  width: 100%;
}

/* Hamburger */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.hamburger {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  position: relative;
  transition: background 0.3s;
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: transform 0.3s;
}

.hamburger::before { top: -7px; }
.hamburger::after { top: 7px; }

.menu-toggle[aria-expanded="true"] .hamburger {
  background: transparent;
}

.menu-toggle[aria-expanded="true"] .hamburger::before {
  transform: translateY(7px) rotate(45deg);
  background: var(--accent);
}

.menu-toggle[aria-expanded="true"] .hamburger::after {
  transform: translateY(-7px) rotate(-45deg);
  background: var(--accent);
}

/* ========================================
   MAIN CONTENT
   ======================================== */
.site-main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
  min-height: calc(100vh - var(--header-height) - 200px);
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
  text-align: center;
  padding: 4rem 0 3rem;
  position: relative;
  overflow: hidden;
}

/* CRT scanline overlay */
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.15) 2px,
    rgba(0, 0, 0, 0.15) 4px
  );
  pointer-events: none;
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-mascot {
  font-size: 4rem;
  margin-bottom: 1rem;
  display: block;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: 2rem;
  color: var(--accent);
  text-shadow: 0 0 20px var(--accent-glow), 0 0 40px rgba(57, 255, 20, 0.15);
  margin-bottom: 1rem;
  letter-spacing: 2px;
}

.hero-tagline {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.hero-description {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 500px;
  margin: 0 auto;
}

/* ========================================
   POST LIST
   ======================================== */
.section-title {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  color: var(--accent);
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-accent);
  text-shadow: 0 0 10px var(--accent-glow);
}

.post-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.post-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
}

.post-card:hover {
  border-color: var(--accent-dim);
  box-shadow: 0 0 20px rgba(57, 255, 20, 0.08), inset 0 0 20px rgba(57, 255, 20, 0.02);
  transform: translateY(-2px);
}

.post-card a {
  text-decoration: none;
  color: inherit;
  display: block;
}

.post-card-title {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  transition: color 0.2s;
}

.post-card:hover .post-card-title {
  color: var(--accent);
}

.post-card-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-bottom: 0.75rem;
}

.post-card-excerpt {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ========================================
   BLOG INDEX
   ======================================== */
.blog-index {
  padding-top: 2rem;
}

/* ========================================
   POST (FULL)
   ======================================== */
.post-full {
  padding-top: 1rem;
}

.post-header {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.post-title {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  line-height: 1.8;
  color: var(--accent);
  text-shadow: 0 0 15px var(--accent-glow);
  margin-bottom: 1rem;
}

.post-meta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.tag {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  background: rgba(57, 255, 20, 0.1);
  border: 1px solid var(--border-accent);
  border-radius: 4px;
  font-size: 0.7rem;
  color: var(--accent-dim);
}

/* Post content typography */
.post-content h2 {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.post-content h3 {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 2rem 0 0.75rem;
}

.post-content p {
  margin-bottom: 1.25rem;
}

.post-content ul,
.post-content ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

.post-content li {
  margin-bottom: 0.4rem;
}

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

.post-content blockquote {
  border-left: 3px solid var(--accent);
  padding: 0.75rem 1.25rem;
  margin: 1.5rem 0;
  background: var(--bg-card);
  border-radius: 0 6px 6px 0;
  color: var(--text-secondary);
}

/* Code blocks - terminal style */
.post-content code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--bg-code);
  color: var(--accent);
  padding: 0.2em 0.4em;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.post-content pre {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
  position: relative;
}

.post-content pre::before {
  content: '>';
  position: absolute;
  top: 0.5rem;
  right: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
}

.post-content pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--accent);
  font-size: 0.85rem;
  line-height: 1.6;
}

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

.post-content th,
.post-content td {
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--border);
  text-align: left;
}

.post-content th {
  background: var(--bg-card);
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent-dim);
  font-size: 0.8rem;
}

.post-content td {
  background: var(--bg-secondary);
}

.post-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

/* Post footer */
.post-footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.back-link {
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

/* ========================================
   PAGE
   ======================================== */
.page-header {
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.page-title {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  color: var(--accent);
  text-shadow: 0 0 15px var(--accent-glow);
}

.page-body {
  line-height: 1.8;
}

.page-body p {
  margin-bottom: 1.25rem;
}

/* ========================================
   FOOTER
   ======================================== */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  margin-top: 2rem;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-tagline {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 1.5rem;
}

.footer-links a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

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

.footer-copy {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 640px) {
  .menu-toggle {
    display: block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.97);
    backdrop-filter: blur(12px);
    flex-direction: column;
    padding: 1rem 1.5rem;
    gap: 0;
    border-bottom: 1px solid var(--border);
  }

  .site-nav.open {
    display: flex;
  }

  .site-nav a {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
  }

  .site-nav a:last-child {
    border-bottom: none;
  }

  .site-nav a::after {
    display: none;
  }

  .hero h1 {
    font-size: 1.3rem;
  }

  .hero-mascot {
    font-size: 3rem;
  }

  .post-title {
    font-size: 1rem;
  }

  .section-title {
    font-size: 0.75rem;
  }

  .post-card {
    padding: 1.25rem;
  }

  .post-card-title {
    font-size: 1rem;
  }

  .footer-links {
    flex-direction: column;
    gap: 0.75rem;
  }
}