/* ================================================================== */
/*  Clawcode Blog — Modern glassmorphism dark theme                    */
/* ================================================================== */

:root {
  color-scheme: dark;
  --bg: #030712;
  --bg-elevated: rgba(15, 23, 42, 0.6);
  --card-bg: rgba(15, 23, 42, 0.45);
  --card-border: rgba(148, 163, 184, 0.12);
  --card-hover-border: rgba(125, 211, 252, 0.35);
  --accent: #7dd3fc;
  --accent-strong: #38bdf8;
  --accent-glow: rgba(56, 189, 248, 0.08);
  --emerald: #34d399;
  --violet: #a78bfa;
  --amber: #fbbf24;
  --text: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-faint: #64748b;
  --border: rgba(148, 163, 184, 0.10);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --radius-xl: 28px;
}

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

::selection {
  background: rgba(56, 189, 248, 0.25);
  color: #f1f5f9;
}

body {
  min-height: 100vh;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---- Background ambient glow ---- */
body::before,
body::after {
  content: "";
  position: fixed;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}
body::before {
  top: -30%;
  left: -10%;
  width: 70vw;
  height: 70vw;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.04) 0%, transparent 70%);
}
body::after {
  bottom: -25%;
  right: -5%;
  width: 55vw;
  height: 55vw;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.03) 0%, transparent 70%);
}

/* ---- Layout shell ---- */
.site-shell {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  width: min(960px, 90vw);
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

a { color: var(--accent); text-decoration: none; transition: color 0.15s ease; }
a:hover { color: var(--accent-strong); }

/* ================================================================== */
/*  Header                                                             */
/* ================================================================== */

.site-header {
  padding: 2.5rem 0 2rem;
  background: linear-gradient(180deg, rgba(56, 189, 248, 0.06) 0%, transparent 100%);
}

.header-content {
  text-align: left;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.4em;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.site-header h1 {
  font-family: "Space Grotesk", "Inter", system-ui, sans-serif;
  font-size: clamp(1.875rem, 4vw, 2.25rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text);
  margin: 0 0 0.5rem;
  max-width: 680px;
}

.lede {
  max-width: 580px;
  color: var(--text-muted);
  font-size: 0.875rem;
  line-height: 1.7;
  margin: 0;
}

/* ---- Nav links ---- */
.header-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.header-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.375rem 0.75rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 500;
  transition: background 0.2s ease, border-color 0.2s ease;
  text-decoration: none;
}

.header-link--primary {
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent);
  border: 1px solid rgba(56, 189, 248, 0.3);
}
.header-link--primary:hover { background: rgba(56, 189, 248, 0.2); color: var(--accent-strong); }

.header-link--ghost {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.header-link--ghost:hover { background: rgba(255, 255, 255, 0.06); color: var(--text); }

.header-link--sky {
  background: rgba(56, 189, 248, 0.12);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.3);
}
.header-link--sky:hover { background: rgba(56, 189, 248, 0.2); color: #7dd3fc; }

.header-link--teal {
  background: rgba(20, 184, 166, 0.12);
  color: #2dd4bf;
  border: 1px solid rgba(20, 184, 166, 0.3);
}
.header-link--teal:hover { background: rgba(20, 184, 166, 0.2); color: #5eead4; }

.header-link--emerald {
  background: rgba(16, 185, 129, 0.12);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}
.header-link--emerald:hover { background: rgba(16, 185, 129, 0.2); color: #6ee7b7; }

.header-link--amber {
  background: rgba(245, 158, 11, 0.12);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}
.header-link--amber:hover { background: rgba(245, 158, 11, 0.2); color: #fcd34d; }

.header-link--violet {
  background: rgba(139, 92, 246, 0.12);
  color: #a78bfa;
  border: 1px solid rgba(139, 92, 246, 0.3);
}
.header-link--violet:hover { background: rgba(139, 92, 246, 0.2); color: #c4b5fd; }

.header-link--gray {
  background: rgba(100, 116, 139, 0.12);
  color: #94a3b8;
  border: 1px solid rgba(100, 116, 139, 0.3);
}
.header-link--gray:hover { background: rgba(100, 116, 139, 0.2); color: #cbd5e1; }

/* ---- Header stats ---- */
.header-stats {
  display: none;
}

/* ================================================================== */
/*  Main content area                                                  */
/* ================================================================== */

main.container {
  flex: 1;
  width: min(1100px, 92vw);
  padding-top: 3rem;
  padding-bottom: 3rem;
}

/* ================================================================== */
/*  Section headings                                                   */
/* ================================================================== */

.section-badge {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.4em;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.section-title {
  font-family: "Space Grotesk", "Inter", system-ui, sans-serif;
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 0.4rem;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.65;
  max-width: 600px;
  margin: 0 0 2rem;
}

/* ================================================================== */
/*  Post cards (home page grid)                                        */
/* ================================================================== */

.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.25rem;
}

.post-card {
  position: relative;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  overflow: hidden;
}

.post-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--violet));
  opacity: 0;
  transition: opacity 0.25s ease;
}

.post-card:hover {
  transform: translateY(-5px);
  border-color: var(--card-hover-border);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.28);
}
.post-card:hover::before { opacity: 1; }

/* ---- Card icon ---- */
.post-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-sm);
  font-size: 1.3rem;
  margin-bottom: 1rem;
  flex-shrink: 0;
}

.post-card-icon--sky    { background: rgba(56, 189, 248, 0.10); }
.post-card-icon--emerald{ background: rgba(52, 211, 153, 0.10); }
.post-card-icon--violet { background: rgba(167, 139, 250, 0.10); }
.post-card-icon--amber  { background: rgba(251, 191, 36, 0.10); }
.post-card-icon--rose   { background: rgba(251, 113, 133, 0.10); }

.post-card-tag {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.post-card h3 {
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.35;
  margin: 0 0 0.5rem;
}

.post-card h3 a {
  color: var(--text);
  transition: color 0.15s ease;
}
.post-card h3 a:hover { color: var(--accent); }

.post-meta {
  font-size: 0.8rem;
  color: var(--text-faint);
  margin: 0 0 0.75rem;
}

.post-card-description {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.6;
  margin: 0;
}

.post-card-readmore {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-top: 1rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent);
  transition: gap 0.2s ease;
}
.post-card:hover .post-card-readmore { gap: 0.5rem; }

/* ---- Tag pills ---- */
.post-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1rem;
}

.tag-pill {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  background: rgba(56, 189, 248, 0.08);
  color: var(--accent);
  border: 1px solid rgba(56, 189, 248, 0.12);
}

/* ================================================================== */
/*  Featured / pinned card (homepage)                                  */
/* ================================================================== */

.featured-card {
  position: relative;
  display: flex;
  gap: 1.75rem;
  align-items: flex-start;
  padding: 1.75rem;
  margin-bottom: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(56, 189, 248, 0.15);
  background:
    linear-gradient(135deg, rgba(56, 189, 248, 0.06) 0%, rgba(167, 139, 250, 0.04) 100%),
    var(--card-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.12);
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.featured-card:hover {
  border-color: rgba(56, 189, 248, 0.3);
  transform: translateY(-3px);
}

.featured-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.12), rgba(167, 139, 250, 0.12));
  font-size: 1.5rem;
  flex-shrink: 0;
}

.featured-card-badge {
  display: inline-block;
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.featured-card h3 {
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 0.4rem;
  line-height: 1.35;
}
.featured-card h3 a { color: var(--text); }
.featured-card h3 a:hover { color: var(--accent); }

.featured-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

.featured-card-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.75rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent);
  transition: gap 0.2s ease;
}
.featured-card:hover .featured-card-cta { gap: 0.5rem; }

/* ================================================================== */
/*  Quick links row (homepage bottom)                                  */
/* ================================================================== */

.quick-links {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.quick-links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 1.25rem;
}

.quick-link-card {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 1rem 1.15rem;
  border-radius: var(--radius-md);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(8px);
  transition: border-color 0.2s ease, transform 0.15s ease;
}
.quick-link-card:hover {
  border-color: var(--card-hover-border);
  transform: translateY(-2px);
  color: var(--text);
}

.quick-link-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 8px;
  font-size: 1.05rem;
  flex-shrink: 0;
}

.quick-link-icon--sky    { background: rgba(56, 189, 248, 0.10); }
.quick-link-icon--emerald{ background: rgba(52, 211, 153, 0.10); }
.quick-link-icon--violet { background: rgba(167, 139, 250, 0.10); }
.quick-link-icon--amber  { background: rgba(251, 191, 36, 0.10); }

.quick-link-text {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  line-height: 1.3;
}
.quick-link-card:hover .quick-link-text { color: var(--text); }

.quick-link-sub {
  display: block;
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-faint);
  margin-top: 0.1rem;
}

@media (max-width: 640px) {
  .featured-card {
    flex-direction: column;
    gap: 1rem;
  }
}

/* ================================================================== */
/*  Single post layout                                                 */
/* ================================================================== */

.post-body {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: clamp(1.5rem, 4vw, 3.5rem);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.2);
}

.post-return {
  margin: 0 0 1.5rem;
}

.post-return a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.post-return a:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.15);
}

.post-header {
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2.5rem;
}

.post-tag {
  display: inline-block;
  text-transform: uppercase;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.4em;
  color: var(--accent);
  margin: 0 0 0.75rem;
}

.post-header h1 {
  font-family: "Space Grotesk", "Inter", system-ui, sans-serif;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text);
  margin: 0 0 0.75rem;
}

.post-header .post-meta {
  font-size: 0.85rem;
  color: var(--text-faint);
  margin: 0;
}

.post-description {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-top: 1rem;
  max-width: 640px;
}

/* ---- Post content (Markdown body) ---- */

.post-content {
  margin-top: 0;
}

.post-content h2 {
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-size: 1.45rem;
  font-weight: 600;
  color: var(--text);
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.post-content h3 {
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
  margin: 2rem 0 0.75rem;
}

.post-content p {
  color: var(--text-secondary);
  margin: 0 0 1.25rem;
}

.post-content li {
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.post-content ul,
.post-content ol {
  padding-left: 1.5rem;
  margin: 0 0 1.25rem;
}

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

.post-content em {
  color: var(--text-muted);
  font-style: italic;
}

.post-content blockquote {
  margin: 1.5rem 0;
  padding: 1rem 1.5rem;
  border-left: 3px solid var(--accent);
  background: rgba(56, 189, 248, 0.04);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
}

.post-content blockquote p {
  margin-bottom: 0.5rem;
}
.post-content blockquote p:last-child {
  margin-bottom: 0;
}

.post-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.5rem 0;
}

/* ---- Code ---- */

.post-content code {
  font-family: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.88em;
  padding: 0.15em 0.4em;
  border-radius: 5px;
  background: rgba(15, 23, 42, 0.7);
  color: var(--accent);
}

.post-content pre {
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  margin: 1.5rem 0;
}

.post-content pre code {
  background: transparent;
  padding: 0;
  color: var(--text-secondary);
  font-size: 0.85rem;
  line-height: 1.7;
}

/* ---- Tables ---- */

.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.88rem;
}

.post-content th {
  text-align: left;
  font-weight: 600;
  color: var(--text);
  padding: 0.75rem 1rem;
  border-bottom: 2px solid rgba(148, 163, 184, 0.15);
  background: rgba(15, 23, 42, 0.3);
}

.post-content td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  vertical-align: top;
}

.post-content tr:last-child td {
  border-bottom: none;
}

/* ---- PDF embed ---- */

.pdf-embed {
  margin: 2rem 0;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  background: var(--card-bg);
  backdrop-filter: blur(8px);
}

.pdf-embed iframe {
  width: 100%;
  height: 70vh;
  border: none;
  border-radius: var(--radius-md);
  margin-top: 0.75rem;
  background: #000;
}

.post-note {
  margin-top: 1.25rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  background: rgba(56, 189, 248, 0.04);
  border: 1px solid rgba(56, 189, 248, 0.10);
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ================================================================== */
/*  Admin page                                                         */
/* ================================================================== */

.drafts-stack {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.draft-card {
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
}

.draft-tag {
  text-transform: uppercase;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.28em;
  color: var(--accent);
  margin: 0 0 0.4rem;
}

.status-pill {
  display: inline-flex;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.10);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  margin: 0.4rem 0 0.75rem;
}

.draft-actions {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.btn {
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.55rem 1rem;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.12s ease, opacity 0.12s ease;
}
.btn:hover { transform: translateY(-1px); }

.btn.approve {
  background: linear-gradient(120deg, #2dd4bf, #38bdf8);
  color: #020617;
}

.btn.ghost {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}
.btn.ghost:hover { background: rgba(255, 255, 255, 0.08); }

.post-actions {
  margin-top: 1rem;
}

.post-actions button {
  background: transparent;
  border: 1px solid rgba(248, 113, 113, 0.3);
  color: #fca5a5;
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.85rem;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.post-actions button:hover {
  border-color: rgba(248, 113, 113, 0.7);
  color: white;
}

.details summary {
  cursor: pointer;
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 500;
}

.admin-note {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

pre {
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border);
  padding: 1rem;
  border-radius: var(--radius-md);
  overflow-x: auto;
  font-size: 0.85rem;
}

/* ================================================================== */
/*  Empty state                                                        */
/* ================================================================== */

.empty-state {
  text-align: center;
  padding: 3rem 2rem;
  border: 1px dashed rgba(125, 211, 252, 0.25);
  border-radius: var(--radius-lg);
  background: rgba(15, 23, 42, 0.25);
  color: var(--text-muted);
}

/* ================================================================== */
/*  Footer                                                             */
/* ================================================================== */

.site-footer {
  border-top: 1px solid var(--border);
  background: rgba(2, 6, 23, 0.4);
  margin-top: 2rem;
}

.footer-inner {
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-faint);
  padding: 1.5rem;
}

.footer-inner a {
  color: var(--text-muted);
}
.footer-inner a:hover { color: var(--text); }

/* ================================================================== */
/*  Callout boxes                                                      */
/* ================================================================== */

.callout {
  position: relative;
  margin: 1.75rem 0;
  padding: 1.25rem 1.5rem 1.25rem 3.25rem;
  border-radius: var(--radius-md);
  border: 1px solid;
  font-size: 0.92rem;
  line-height: 1.65;
}
.callout::before {
  position: absolute;
  left: 1.1rem;
  top: 1.2rem;
  font-size: 1.15rem;
  line-height: 1;
}
.callout p { margin: 0 0 0.5rem; }
.callout p:last-child { margin-bottom: 0; }
.callout strong { color: var(--text); }

.callout--info {
  background: rgba(56, 189, 248, 0.06);
  border-color: rgba(56, 189, 248, 0.18);
  color: var(--text-secondary);
}
.callout--info::before { content: "\1F4A1"; }

.callout--success {
  background: rgba(52, 211, 153, 0.06);
  border-color: rgba(52, 211, 153, 0.18);
  color: #a7f3d0;
}
.callout--success::before { content: "\2705"; }

.callout--warning {
  background: rgba(251, 191, 36, 0.06);
  border-color: rgba(251, 191, 36, 0.18);
  color: #fde68a;
}
.callout--warning::before { content: "\26A0\FE0F"; }

.callout--danger {
  background: rgba(248, 113, 113, 0.06);
  border-color: rgba(248, 113, 113, 0.18);
  color: #fca5a5;
}
.callout--danger::before { content: "\1F6A8"; }

.callout--tip {
  background: rgba(167, 139, 250, 0.06);
  border-color: rgba(167, 139, 250, 0.18);
  color: #c4b5fd;
}
.callout--tip::before { content: "\1F680"; }

/* ================================================================== */
/*  Feature / icon cards grid                                          */
/* ================================================================== */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin: 1.75rem 0;
}

.feature-card {
  position: relative;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 1.35rem 1.25rem;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.feature-card:hover {
  border-color: var(--card-hover-border);
  transform: translateY(-2px);
}

.feature-card-icon {
  font-size: 1.5rem;
  line-height: 1;
  margin-bottom: 0.75rem;
}

.feature-card h4 {
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 0.4rem;
}

.feature-card p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin: 0;
}

/* ---- Color accent variants ---- */
.feature-card--sky    { border-left: 3px solid rgba(56, 189, 248, 0.5); }
.feature-card--emerald{ border-left: 3px solid rgba(52, 211, 153, 0.5); }
.feature-card--violet { border-left: 3px solid rgba(167, 139, 250, 0.5); }
.feature-card--amber  { border-left: 3px solid rgba(251, 191, 36, 0.5); }
.feature-card--rose   { border-left: 3px solid rgba(251, 113, 133, 0.5); }

/* ================================================================== */
/*  Stat row                                                           */
/* ================================================================== */

.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  margin: 1.75rem 0;
}

.stat-item {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 1.15rem 1.1rem;
  text-align: center;
  backdrop-filter: blur(8px);
}

.stat-number {
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.2;
  background: linear-gradient(135deg, var(--accent), var(--violet));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-faint);
  margin-top: 0.25rem;
}

/* ================================================================== */
/*  Hero banner                                                        */
/* ================================================================== */

.hero-banner {
  position: relative;
  margin: 1.75rem 0;
  padding: 2rem 1.75rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--card-border);
}

.hero-banner--sky {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.10) 0%, rgba(15, 23, 42, 0.5) 100%);
}
.hero-banner--emerald {
  background: linear-gradient(135deg, rgba(52, 211, 153, 0.10) 0%, rgba(15, 23, 42, 0.5) 100%);
}
.hero-banner--violet {
  background: linear-gradient(135deg, rgba(167, 139, 250, 0.10) 0%, rgba(15, 23, 42, 0.5) 100%);
}
.hero-banner--amber {
  background: linear-gradient(135deg, rgba(251, 191, 36, 0.08) 0%, rgba(15, 23, 42, 0.5) 100%);
}
.hero-banner--rose {
  background: linear-gradient(135deg, rgba(251, 113, 133, 0.08) 0%, rgba(15, 23, 42, 0.5) 100%);
}

.hero-banner-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.hero-banner h3 {
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 0.5rem;
}

.hero-banner p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.65;
  margin: 0 0 0.75rem;
  max-width: 600px;
}
.hero-banner p:last-child { margin-bottom: 0; }

/* ================================================================== */
/*  Timeline / stepper                                                 */
/* ================================================================== */

.timeline {
  position: relative;
  margin: 1.75rem 0;
  padding-left: 2rem;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 0.55rem;
  top: 0.25rem;
  bottom: 0.25rem;
  width: 2px;
  background: linear-gradient(180deg, var(--accent), var(--violet));
  border-radius: 2px;
  opacity: 0.35;
}

.timeline-item {
  position: relative;
  margin-bottom: 1.5rem;
  padding: 1rem 1.25rem;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  backdrop-filter: blur(8px);
}
.timeline-item:last-child { margin-bottom: 0; }

.timeline-item::before {
  content: "";
  position: absolute;
  left: -1.65rem;
  top: 1.3rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(56, 189, 248, 0.4);
}

.timeline-era {
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin: 0 0 0.3rem;
}

.timeline-title {
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 0.35rem;
}

.timeline-text {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

/* ================================================================== */
/*  Numbered steps                                                     */
/* ================================================================== */

.steps {
  counter-reset: step;
  margin: 1.75rem 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.step {
  position: relative;
  counter-increment: step;
  padding: 1.15rem 1.25rem 1.15rem 3.5rem;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  backdrop-filter: blur(8px);
}
.step::before {
  content: counter(step);
  position: absolute;
  left: 1rem;
  top: 1rem;
  width: 1.85rem;
  height: 1.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--bg);
  background: linear-gradient(135deg, var(--accent), #60a5fa);
  border-radius: 50%;
}

.step h4 {
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 0.3rem;
}

.step p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

/* ================================================================== */
/*  Highlight strip                                                    */
/* ================================================================== */

.highlight-strip {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin: 1.75rem 0;
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-md);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
}

.highlight-strip-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.highlight-strip-body h4 {
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 0.25rem;
}

.highlight-strip-body p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin: 0;
}

/* ================================================================== */
/*  Divider with label                                                 */
/* ================================================================== */

.divider-label {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 2.5rem 0 1.5rem;
  color: var(--text-faint);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3em;
}
.divider-label::before,
.divider-label::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ================================================================== */
/*  Lab note / run card                                                */
/* ================================================================== */

.run-card {
  margin: 0.75rem 0;
  padding: 1rem 1.25rem 1rem 3rem;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  position: relative;
  font-size: 0.88rem;
}
.run-card::before {
  content: attr(data-run);
  position: absolute;
  left: 0.85rem;
  top: 1rem;
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

.run-card strong { color: var(--text); }
.run-card p { margin: 0; color: var(--text-muted); line-height: 1.55; }

/* --- Run card color accents --- */
.run-card--red    { border-left: 3px solid rgba(248, 113, 113, 0.5); }
.run-card--green  { border-left: 3px solid rgba(52, 211, 153, 0.5); }
.run-card--amber  { border-left: 3px solid rgba(251, 191, 36, 0.5); }
.run-card--sky    { border-left: 3px solid rgba(56, 189, 248, 0.5); }

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

.cta-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin: 1.25rem 0;
  padding: 0.65rem 1.35rem;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 600;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.15), rgba(167, 139, 250, 0.15));
  border: 1px solid rgba(56, 189, 248, 0.2);
  color: var(--accent);
  transition: background 0.2s ease, transform 0.15s ease;
}
.cta-link:hover {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.25), rgba(167, 139, 250, 0.25));
  transform: translateY(-1px);
  color: var(--accent-strong);
}

/* ================================================================== */
/*  Research paper layout                                              */
/* ================================================================== */

.research-shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 2.5rem;
  align-items: start;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* ---- Sidebar TOC ---- */
.toc-sidebar {
  position: sticky;
  top: 2rem;
  max-height: calc(100vh - 4rem);
  overflow-y: auto;
  padding-right: 0.5rem;
}

.toc-heading {
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.4em;
  color: var(--accent);
  margin: 0 0 1rem;
}

.toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.toc-list li {
  margin-bottom: 0.15rem;
}

.toc-list a {
  display: block;
  padding: 0.35rem 0.75rem;
  border-radius: 8px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-muted);
  line-height: 1.4;
  transition: background 0.15s ease, color 0.15s ease;
  border-left: 2px solid transparent;
}

.toc-list a:hover,
.toc-list a.active {
  background: rgba(56, 189, 248, 0.06);
  color: var(--accent);
  border-left-color: var(--accent);
}

.toc-list .toc-sub {
  padding-left: 1.25rem;
}

.toc-list .toc-sub a {
  font-size: 0.72rem;
  color: var(--text-faint);
  padding: 0.25rem 0.75rem;
}

.toc-progress {
  width: 100%;
  height: 3px;
  border-radius: 2px;
  background: var(--border);
  margin-bottom: 1.25rem;
  overflow: hidden;
}

.toc-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--violet));
  border-radius: 2px;
  transition: width 0.15s ease;
}

/* ---- Research content area ---- */
.research-content {
  min-width: 0;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: clamp(1.5rem, 4vw, 3.5rem);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.2);
}

.research-content .post-content h2 {
  scroll-margin-top: 2rem;
}

.research-content .post-content h3 {
  scroll-margin-top: 2rem;
}

/* ---- Mobile TOC toggle ---- */
.toc-mobile-toggle {
  display: none;
  position: sticky;
  top: 0;
  z-index: 50;
  width: 100%;
  padding: 0.75rem 1.25rem;
  background: rgba(3, 7, 18, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-align: left;
}

.toc-mobile-toggle::after {
  content: " \25BC";
  font-size: 0.65rem;
}

/* ---- Reference list ---- */
.ref-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
  counter-reset: ref;
}

.ref-list li {
  counter-increment: ref;
  position: relative;
  padding-left: 2.25rem;
  margin-bottom: 0.75rem;
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.55;
}

.ref-list li::before {
  content: "[" counter(ref) "]";
  position: absolute;
  left: 0;
  font-weight: 700;
  color: var(--accent);
  font-size: 0.75rem;
}

.ref-list a {
  word-break: break-all;
}

/* ---- Probability / metric table ---- */
.metric-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.85rem;
}

.metric-table th {
  text-align: left;
  font-weight: 600;
  color: var(--text);
  padding: 0.65rem 0.85rem;
  border-bottom: 2px solid rgba(148, 163, 184, 0.15);
  background: rgba(15, 23, 42, 0.3);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.metric-table td {
  padding: 0.6rem 0.85rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  vertical-align: top;
}

.metric-table tr:last-child td {
  border-bottom: none;
}

.metric-table .metric-highlight {
  font-weight: 700;
  color: var(--accent);
}

/* ---- Phase card ---- */
.phase-card {
  margin: 1.75rem 0;
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--card-border);
  background: var(--card-bg);
}

.phase-badge {
  display: inline-block;
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  margin-bottom: 0.75rem;
}

.phase-badge--0 { background: rgba(148, 163, 184, 0.12); color: var(--text-muted); }
.phase-badge--1 { background: rgba(56, 189, 248, 0.12); color: var(--accent); }
.phase-badge--2 { background: rgba(52, 211, 153, 0.12); color: var(--emerald); }
.phase-badge--3 { background: rgba(167, 139, 250, 0.12); color: var(--violet); }
.phase-badge--4 { background: rgba(251, 191, 36, 0.12); color: var(--amber); }
.phase-badge--5 { background: rgba(251, 113, 133, 0.12); color: #fb7185; }
.phase-badge--6 { background: rgba(56, 189, 248, 0.12); color: var(--accent); }

.phase-card h3 {
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 0.75rem;
}

.phase-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin: 0 0 0.75rem;
}

.phase-card p:last-child { margin-bottom: 0; }

.phase-detail {
  margin: 0.5rem 0;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  background: rgba(15, 23, 42, 0.4);
  border-left: 2px solid var(--accent);
}

.phase-detail strong {
  color: var(--text);
  font-size: 0.88rem;
}

.phase-detail p {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin: 0.25rem 0 0;
}

@media (max-width: 860px) {
  .research-shell {
    grid-template-columns: 1fr;
    padding: 0;
  }

  .toc-sidebar {
    position: static;
    max-height: none;
    display: none;
    padding: 1rem 1.5rem;
    background: rgba(3, 7, 18, 0.95);
    border-bottom: 1px solid var(--border);
  }

  .toc-sidebar.open {
    display: block;
  }

  .toc-mobile-toggle {
    display: block;
  }

  .research-content {
    border-radius: 0;
    border-left: none;
    border-right: none;
  }
}

/* ================================================================== */
/*  Scrollbar                                                          */
/* ================================================================== */

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(148, 163, 184, 0.15); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(148, 163, 184, 0.25); }

/* ================================================================== */
/*  Responsive                                                         */
/* ================================================================== */

@media (max-width: 640px) {
  .container { padding: 1.5rem 1rem; }
  .site-header { padding: 2rem 0 1.5rem; }
  .posts-grid { grid-template-columns: 1fr; }
}

/* ================================================================== */
/*  Print / PDF                                                        */
/* ================================================================== */

@media print {
  /* ---- Colour-adjust: force backgrounds & colours to print ---- */
  * { -webkit-print-color-adjust: exact !important; print-color-adjust: exact !important; }

  /* ---- Base colours (resolve CSS vars explicitly for print) ---- */
  body        { background: #0b1121 !important; color: #f1f5f9 !important; }
  body::before, body::after { display: none !important; }
  h1, h2, h3, h4, h5, h6 { color: #f1f5f9 !important; }
  p, li, td, th, dd, dt, span, div { color: #f1f5f9 !important; }
  a           { color: #38bdf8 !important; }
  .text-muted, .post-date, .post-tag, .header-stat-label { color: #94a3b8 !important; }

  /* ---- Hide navigation-only chrome ---- */
  .toc-sidebar, .toc-mobile-toggle, .site-footer,
  .header-links { display: none !important; }

  /* ---- Single column research layout ---- */
  .research-shell { grid-template-columns: 1fr !important; max-width: 100% !important; }

  /* ---- Page-break rules (conservative) ----
     Only prevent breaks inside SMALL, self-contained blocks.
     Large containers (.feature-grid, .steps, .timeline, etc.)
     are allowed to break so pages stay filled.               */
  h2, h3                   { break-after: avoid; }
  .callout                 { break-inside: avoid; }
  .hero-banner             { break-inside: avoid; }
  .highlight-strip         { break-inside: avoid; }
  .stat-row                { break-inside: avoid; }
  table                    { break-inside: avoid; }

  /* Individual cards can avoid breaks, but their parent grids CAN break */
  .feature-card            { break-inside: avoid; }
  .run-card                { break-inside: avoid; }
  .phase-card              { break-inside: avoid; }

  /* Allow grids/timelines/steps to flow across pages */
  .feature-grid, .steps, .timeline { break-inside: auto; }

  /* ---- Reference list: append URL ---- */
  .ref-list a[href]::after {
    content: " [" attr(href) "]";
    font-size: 0.75em;
    color: #94a3b8 !important;
    word-break: break-all;
  }

  /* ---- Spacing ---- */
  .container { padding: 1rem 0; }
  .post-body, .research-content { padding: 1.5rem; }

  /* ---- Hide ambient glow pseudo-elements ---- */
  .post-body::before { display: none !important; }
}