@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Share+Tech+Mono&display=swap');

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

:root {
  --bg-deep: #0a0a0f;
  --bg-panel: #12121c;
  --bg-card: #1a1a2e;
  --bg-hover: #222240;
  --border: #2a2a4a;
  --border-bright: #4a4a7a;
  --cyan: #00f0ff;
  --cyan-dim: #00607a;
  --magenta: #ff00aa;
  --magenta-dim: #6a0048;
  --yellow: #ffe600;
  --green: #00ff88;
  --red: #ff3355;
  --text: #c8c8e0;
  --text-dim: #6a6a8a;
  --text-bright: #eeeeff;
  --glow-cyan: 0 0 20px rgba(0, 240, 255, 0.3);
  --glow-magenta: 0 0 20px rgba(255, 0, 170, 0.3);
  --scanline-opacity: 0.08;
  --nav-bg: rgba(10, 10, 15, 0.92);
}

[data-theme="light"] {
  --bg-deep: #e8e8f0;
  --bg-panel: #f0f0f8;
  --bg-card: #e0e0ec;
  --bg-hover: #d4d4e2;
  --border: #c0c0d4;
  --border-bright: #a0a0c0;
  --cyan: #0090aa;
  --cyan-dim: #88d0e0;
  --magenta: #cc0088;
  --magenta-dim: #e8a0d0;
  --yellow: #c8a800;
  --green: #00a858;
  --red: #dd2244;
  --text: #2a2a3e;
  --text-dim: #6a6a80;
  --text-bright: #1a1a2e;
  --glow-cyan: 0 0 12px rgba(0, 144, 170, 0.2);
  --glow-magenta: 0 0 12px rgba(204, 0, 136, 0.2);
  --scanline-opacity: 0;
  --nav-bg: rgba(232, 232, 240, 0.92);
}

html { background: var(--bg-deep); color: var(--text); font-family: 'Share Tech Mono', monospace; }

body {
  min-height: 100vh;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(0, 240, 255, 0.03) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(255, 0, 170, 0.03) 0%, transparent 50%),
    var(--bg-deep);
  overflow-x: hidden;
}

[data-theme="light"] body {
  background:
    radial-gradient(ellipse at 20% 50%, rgba(0, 144, 170, 0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(204, 0, 136, 0.04) 0%, transparent 50%),
    var(--bg-deep);
}

/* Scanline overlay */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, var(--scanline-opacity)) 2px,
    rgba(0, 0, 0, var(--scanline-opacity)) 4px
  );
  pointer-events: none;
  z-index: 9999;
}

/* ========== NAV ========== */
.nav {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 20px;
  position: sticky;
  top: 0;
  z-index: 100;
  isolation: isolate;
}

.nav::before {
  content: '';
  position: absolute;
  inset: 0;
  width: 100vw;
  left: 50%;
  transform: translateX(-50%);
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: -1;
}

.nav-logo-blocks {
  display: inline-flex;
  text-decoration: none;
  border-radius: 3px;
  overflow: hidden;
  justify-self: start;
}

.nav-logo-blocks .nav-block {
  font-family: 'Orbitron', sans-serif;
  font-weight: 900;
  font-size: 0.55rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #fff;
  padding: 4px 7px;
  line-height: 1;
  text-shadow: 1px 1px 0 rgba(0,0,0,0.3);
}

.nav-block.c { background: linear-gradient(180deg, #00c8ff, #0090dd); }
.nav-block.m { background: linear-gradient(180deg, #ff0099, #cc0077); }

.nav-links {
  display: flex;
  gap: 24px;
  list-style: none;
  justify-self: center;
}

.nav-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--cyan); }

.theme-toggle {
  justify-self: end;
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px;
  cursor: pointer;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s, border-color 0.2s;
}
.theme-toggle:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}
.theme-toggle .sun { display: none; }
.theme-toggle .moon { display: block; }
[data-theme="light"] .theme-toggle .sun { display: block; }
[data-theme="light"] .theme-toggle .moon { display: none; }

@media (max-width: 600px) {
  .nav-links { gap: 14px; }
  .nav-links a { font-size: 0.6rem; }
}

/* ========== FOOTER ========== */
.footer {
  border-top: 1px solid var(--border);
  padding: 48px 20px 32px;
  max-width: 1200px;
  margin: 0 auto;
}

.footer-sitemap {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 36px;
}

.footer-sitemap-col {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-sitemap-heading {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-bright);
  margin-bottom: 4px;
}

.footer-sitemap-col a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.6rem;
  letter-spacing: 0.03em;
  transition: color 0.2s;
  text-transform: capitalize;
}

.footer-sitemap-col a:hover {
  color: var(--cyan);
}

.footer-bottom {
  text-align: center;
  border-top: 1px solid var(--border);
  padding-top: 24px;
}

.footer-logo {
  font-family: 'Orbitron', sans-serif;
  font-weight: 900;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  background: linear-gradient(135deg, var(--cyan), var(--magenta));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 10px;
}

.footer-text {
  font-size: 0.6rem;
  color: var(--text-dim);
  line-height: 1.8;
  letter-spacing: 0.05em;
}

@media (max-width: 560px) {
  .footer-sitemap {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .footer-sitemap-col:last-child {
    grid-column: 1 / -1;
  }
}

/* ========== BLOG LAYOUT ========== */
.blog-container {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 24px 64px;
}

.blog-container--wide {
  max-width: 1200px;
  padding-left: 20px;
  padding-right: 20px;
}

/* ========== BREADCRUMBS ========== */
.breadcrumbs ol {
  display: flex;
  gap: 0;
  list-style: none;
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}

.breadcrumbs li::after {
  content: ' // ';
  margin: 0 8px;
  color: var(--border-bright);
}

.breadcrumbs li:last-child::after {
  content: '';
}

.breadcrumbs a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s;
}

.breadcrumbs a:hover {
  color: var(--cyan);
}

/* ========== POST HEADER ========== */
.post-header {
  margin-top: 32px;
  margin-bottom: 40px;
}

.post-meta {
  font-size: 0.7rem;
  color: var(--cyan);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.meta-sep {
  margin: 0 10px;
  color: var(--border-bright);
}

.post-title {
  font-family: 'Orbitron', sans-serif;
  font-weight: 900;
  font-size: 1.8rem;
  color: var(--text-bright);
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.tag {
  font-size: 0.6rem;
  color: var(--cyan);
  border: 1px solid var(--border);
  padding: 3px 10px;
  border-radius: 3px;
  text-decoration: none;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: border-color 0.2s, background 0.2s;
}

.tag:hover {
  border-color: var(--cyan);
  background: rgba(0, 240, 255, 0.05);
}

/* ========== POST SUMMARY (AEO) ========== */
.post-summary {
  border-left: 3px solid var(--cyan);
  padding: 16px 20px;
  margin-bottom: 32px;
  background: rgba(0, 240, 255, 0.03);
  border-radius: 0 6px 6px 0;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--text-bright);
  letter-spacing: 0.01em;
}

[data-theme="light"] .post-summary {
  background: rgba(0, 144, 170, 0.05);
}

/* ========== POST CONTENT (Markdown) ========== */
.post-content {
  line-height: 1.85;
  font-size: 0.85rem;
  color: var(--text);
}

.post-content > :first-child {
  margin-top: 0;
}

.post-content h2 {
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-bright);
  margin-top: 32px;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.post-content h3 {
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-bright);
  margin-top: 24px;
  margin-bottom: 12px;
}

.post-content p {
  margin-bottom: 20px;
}

.post-content a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-dim);
  transition: border-color 0.2s;
}

.post-content a:hover {
  border-color: var(--cyan);
}

.post-content code {
  font-family: 'Share Tech Mono', monospace;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 0.82rem;
  color: var(--cyan);
}

.post-content pre {
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 20px;
  margin: 24px 0;
  overflow-x: auto;
}

.post-content pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.78rem;
  color: var(--text);
  line-height: 1.7;
}

/* Allow Prism syntax highlighting tokens to override base color */
.post-content pre code[class*="language-"] {
  color: var(--text);
}

.post-content blockquote {
  border-left: 3px solid var(--magenta);
  padding: 12px 20px;
  margin: 24px 0;
  color: var(--text-dim);
  font-style: italic;
  background: rgba(255, 0, 170, 0.03);
  border-radius: 0 6px 6px 0;
}

.post-content ul,
.post-content ol {
  margin: 16px 0;
  padding-left: 24px;
}

.post-content li {
  margin-bottom: 8px;
}

.post-content li::marker {
  color: var(--cyan);
}

.post-content img {
  max-width: 100%;
  border-radius: 6px;
  border: 1px solid var(--border);
  margin: 24px 0;
}

.post-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 40px 0;
}

/* Heading anchor links (ariaHidden style — anchor is before heading text) */
.post-content .header-anchor {
  color: var(--border-bright);
  text-decoration: none;
  font-size: 0.8em;
  opacity: 0;
  transition: opacity 0.2s;
  margin-right: 6px;
}

.post-content h2:hover .header-anchor,
.post-content h3:hover .header-anchor {
  opacity: 1;
}

/* ========== POST CTA ========== */
.post-cta {
  margin-top: 56px;
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  text-align: center;
}

.post-cta p {
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-bright);
  margin-bottom: 16px;
}

.post-cta .btn {
  display: inline-block;
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 10px 28px;
  border-radius: 6px;
  transition: transform 0.15s, box-shadow 0.15s;
}

.post-cta .btn.primary {
  background: linear-gradient(135deg, var(--cyan), #0090dd);
  color: #fff;
  box-shadow: var(--glow-cyan);
}

.post-cta .btn.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 30px rgba(0, 240, 255, 0.4);
}

/* ========== RELATED POSTS ========== */
.related-posts {
  margin-top: 56px;
}

.section-label {
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 16px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.related-card {
  display: block;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  text-decoration: none;
  transition: border-color 0.2s, transform 0.15s;
}

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

.related-card time {
  font-size: 0.6rem;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.related-card h3 {
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 0.78rem;
  color: var(--text-bright);
  margin-top: 8px;
  line-height: 1.4;
}

/* ========== BLOG INDEX ========== */
.blog-index-header {
  text-align: center;
  margin-bottom: 48px;
}

.blog-index-header .section-heading {
  font-family: 'Orbitron', sans-serif;
  font-weight: 900;
  font-size: 2rem;
  color: var(--text-bright);
  letter-spacing: 0.02em;
}

.blog-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.blog-card {
  display: flex;
  flex-direction: column;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  text-decoration: none;
  transition: border-color 0.2s, transform 0.15s;
}

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

.blog-card-meta {
  display: flex;
  gap: 12px;
  font-size: 0.55rem;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.blog-card h2 {
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--text-bright);
  line-height: 1.4;
  margin-bottom: 8px;
}

.blog-card p {
  font-size: 0.72rem;
  color: var(--text);
  line-height: 1.6;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card .post-tags {
  margin-top: auto;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 960px) {
  .blog-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .blog-container {
    padding: 32px 16px 48px;
  }

  .blog-list {
    grid-template-columns: 1fr;
  }

  .post-title {
    font-size: 1.3rem;
  }

  .post-content h2 {
    font-size: 1.05rem;
  }

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

/* ========== SYNTAX HIGHLIGHTING (Prism.js) ========== */
.token.comment,
.token.prolog,
.token.doctype,
.token.cdata {
  color: #6a6a8a;
  font-style: italic;
}

.token.punctuation {
  color: #8888a8;
}

.token.property,
.token.tag,
.token.boolean,
.token.number,
.token.constant,
.token.symbol {
  color: #ffe600;
}

.token.selector,
.token.attr-name,
.token.string,
.token.char,
.token.builtin {
  color: #00ff88;
}

.token.operator,
.token.entity,
.token.url,
.language-css .token.string,
.style .token.string {
  color: #c8c8e0;
}

.token.atrule,
.token.attr-value,
.token.keyword {
  color: #ff00aa;
}

.token.function,
.token.class-name {
  color: #00f0ff;
}

.token.regex,
.token.important,
.token.variable {
  color: #ffe600;
}

.token.important,
.token.bold {
  font-weight: bold;
}

.token.italic {
  font-style: italic;
}

/* Light theme syntax overrides */
[data-theme="light"] .token.comment,
[data-theme="light"] .token.prolog,
[data-theme="light"] .token.doctype,
[data-theme="light"] .token.cdata {
  color: #6a6a80;
}

[data-theme="light"] .token.punctuation {
  color: #555570;
}

[data-theme="light"] .token.property,
[data-theme="light"] .token.tag,
[data-theme="light"] .token.boolean,
[data-theme="light"] .token.number,
[data-theme="light"] .token.constant,
[data-theme="light"] .token.symbol {
  color: #9a7b00;
}

[data-theme="light"] .token.selector,
[data-theme="light"] .token.attr-name,
[data-theme="light"] .token.string,
[data-theme="light"] .token.char,
[data-theme="light"] .token.builtin {
  color: #007a3d;
}

[data-theme="light"] .token.atrule,
[data-theme="light"] .token.attr-value,
[data-theme="light"] .token.keyword {
  color: #cc0088;
}

[data-theme="light"] .token.function,
[data-theme="light"] .token.class-name {
  color: #0077aa;
}

[data-theme="light"] .token.regex,
[data-theme="light"] .token.important,
[data-theme="light"] .token.variable {
  color: #9a7b00;
}