/* DarkTech Theme — Deep dark tech aesthetic for AI tool sites */

:root {
  /* Background layers */
  --dt-bg: #0A0E17;
  --dt-surface: #0F1420;
  --dt-surface2: #141A28;

  /* Brand colors */
  --dt-neon: #00E5A0;
  --dt-neon-dim: rgba(0, 229, 160, 0.12);
  --dt-neon-border: rgba(0, 229, 160, 0.25);
  --dt-blue: #00B4D8;

  /* Text */
  --dt-t1: rgba(255, 255, 255, 0.92);
  --dt-t2: rgba(255, 255, 255, 0.50);
  --dt-t3: rgba(255, 255, 255, 0.28);

  /* Border */
  --dt-border: rgba(255, 255, 255, 0.06);

  /* Fonts */
  --dt-ff: 'Space Grotesk', 'Noto Sans TC', sans-serif;
  --dt-mono: 'JetBrains Mono', monospace;

  /* Override global vars for compatibility */
  --font-body: var(--dt-ff);
  --font-heading: var(--dt-ff);
  --color-primary: var(--dt-neon);
  --color-accent: var(--dt-neon);
  --color-text: var(--dt-t1);
  --color-text-muted: var(--dt-t3);
  --color-bg: var(--dt-bg);
  --color-surface: var(--dt-surface);
  --color-border: var(--dt-border);
  --reading-progress-color: var(--dt-neon);
}

/* Global reset for darktech */
[data-theme="darktech"] {
  background: var(--dt-bg);
  color: var(--dt-t2);
}

/* All elements sharp corners */
[data-theme="darktech"] * {
  border-radius: 0 !important;
}

/* Article content styling */
[data-theme="darktech"] .prose-premium {
  color: var(--dt-t2);
  font-family: var(--dt-ff);
  font-size: 14.5px;
  line-height: 1.85;
}

[data-theme="darktech"] .prose-premium h2 {
  font-family: var(--dt-ff);
  font-size: 20px;
  font-weight: 600;
  color: var(--dt-t1);
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--dt-border);
}

[data-theme="darktech"] .prose-premium h3 {
  font-family: var(--dt-ff);
  font-size: 17px;
  font-weight: 600;
  color: var(--dt-t1);
  margin-top: 20px;
}

[data-theme="darktech"] .prose-premium p {
  color: var(--dt-t2);
  font-size: 14.5px;
  line-height: 1.85;
}

[data-theme="darktech"] .prose-premium ul,
[data-theme="darktech"] .prose-premium ol {
  color: var(--dt-t2);
  font-size: 13.5px;
  line-height: 1.75;
}

[data-theme="darktech"] .prose-premium blockquote {
  border-left: 2px solid var(--dt-neon);
  background: var(--dt-surface);
  padding: 14px 20px;
  font-size: 13.5px;
  color: var(--dt-t2);
  margin: 20px 0;
}

[data-theme="darktech"] .prose-premium code {
  font-family: var(--dt-mono);
  font-size: 12px;
  background: var(--dt-surface2);
  padding: 2px 6px;
  color: var(--dt-neon);
}

[data-theme="darktech"] .prose-premium pre {
  background: var(--dt-surface2);
  padding: 16px;
  overflow-x: auto;
}

[data-theme="darktech"] .prose-premium pre code {
  background: none;
  padding: 0;
  color: var(--dt-t2);
}

[data-theme="darktech"] .prose-premium a {
  color: var(--dt-neon);
  text-decoration: none;
  border-bottom: 1px solid var(--dt-neon-border);
  transition: border-color 0.2s;
}

[data-theme="darktech"] .prose-premium a:hover {
  border-color: var(--dt-neon);
}

[data-theme="darktech"] .prose-premium img {
  max-width: 100%;
  border-radius: 0 !important;
}

[data-theme="darktech"] .prose-premium strong {
  color: var(--dt-t1);
  font-weight: 600;
}

[data-theme="darktech"] .prose-premium table {
  width: 100%;
  border-collapse: collapse;
}

[data-theme="darktech"] .prose-premium th {
  background: var(--dt-surface2);
  color: var(--dt-t1);
  padding: 10px 14px;
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  border: 1px solid var(--dt-border);
}

[data-theme="darktech"] .prose-premium td {
  padding: 10px 14px;
  border: 1px solid var(--dt-border);
  font-size: 13px;
  color: var(--dt-t2);
}

/* Reading progress bar override */
[data-theme="darktech"] .reading-progress-bar {
  background: linear-gradient(90deg, var(--dt-neon), var(--dt-blue)) !important;
  height: 2px !important;
}

/* Scrollbar */
[data-theme="darktech"] ::-webkit-scrollbar {
  width: 6px;
}

[data-theme="darktech"] ::-webkit-scrollbar-track {
  background: var(--dt-bg);
}

[data-theme="darktech"] ::-webkit-scrollbar-thumb {
  background: var(--dt-surface2);
}

/* Hide standard stuff on darktech */
html, body {
  overflow-x: hidden;
}

/* ── Hero search focus ── */
.dt-hero-search:focus {
  border-color: var(--dt-neon-border) !important;
  box-shadow: 0 0 0 3px var(--dt-neon-dim) !important;
}

.dt-hero-search::placeholder {
  color: var(--dt-t3);
}

/* ── Category card hover ── */
.dt-cat-card:hover {
  border-color: var(--dt-neon-border) !important;
  background: var(--dt-neon-dim) !important;
}

/* ── Article card hover ── */
.dt-article-card:hover {
  border-color: var(--dt-neon-border) !important;
}

/* ── Related card hover ── */
.dt-related-card:hover {
  border-color: var(--dt-neon-border) !important;
}

/* ── Article list row hover ── */
.dt-list-row:hover .dt-list-arrow {
  color: var(--dt-neon) !important;
}

.dt-list-row:hover h3 {
  color: var(--dt-neon) !important;
}

/* ── TOC link hover ── */
.dt-toc-link:hover {
  color: var(--dt-t1) !important;
  border-left-color: var(--dt-neon-border) !important;
}

/* ── Header animations ── */
@keyframes dtFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ── Responsive: Header ── */
@media (max-width: 768px) {
  .dt-header-nav { display: none !important; }
  .dt-header-burger { display: flex !important; }
}

/* ── Responsive: Category grid ── */
@media (max-width: 768px) {
  .dt-cat-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }
}

@media (max-width: 480px) {
  .dt-cat-grid {
    grid-template-columns: 1fr !important;
  }
}

/* ── Responsive: Article grid ── */
@media (max-width: 768px) {
  .dt-article-grid-home {
    grid-template-columns: 1fr !important;
  }
}

/* ── Responsive: Related articles ── */
@media (max-width: 768px) {
  .dt-related-grid {
    grid-template-columns: 1fr !important;
  }
}

/* ── Responsive: Article layout 3-column ── */
@media (max-width: 1199px) {
  .dt-share-desktop {
    display: none !important;
  }
  .dt-article-grid {
    grid-template-columns: 160px minmax(0, 1fr) !important;
  }
}

@media (max-width: 768px) {
  .dt-article-grid {
    display: block !important;
    padding: 20px 16px 40px !important;
  }
  .dt-toc-desktop {
    display: none !important;
  }
  .dt-toc-mobile {
    display: block !important;
  }
  .dt-share-mobile {
    display: flex !important;
  }
  .dt-article-grid > div:nth-child(2) {
    padding-left: 0 !important;
    padding-right: 0 !important;
  }
}