/* David Bratslavsky — site styles */

:root {
  --navy-deep: #0A1628;
  --navy-900: #0d1b30;
  --navy-800: #142340;
  --navy-700: #1b2d4f;
  --charcoal: #0f172a;
  --slate-700: #334155;
  --slate-500: #64748b;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --blue: #3B82F6;
  --blue-bright: #60a5fa;
  --cyan: #06B6D4;
  --cyan-bright: #22d3ee;

  /* dark theme (default) */
  --bg: #0A1628;
  --bg-elevated: #0f1d36;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #f8fafc;
  --text-muted: #94a3b8;
  --text-subtle: #64748b;
  --accent: var(--blue);
  --accent-2: var(--cyan);
  --hero-glow-1: rgba(59, 130, 246, 0.35);
  --hero-glow-2: rgba(6, 182, 212, 0.28);
}

html[data-theme="light"] {
  --bg: #f8fafc;
  --bg-elevated: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f8fafc;
  --border: rgba(10, 22, 40, 0.08);
  --border-strong: rgba(10, 22, 40, 0.16);
  --text: #0A1628;
  --text-muted: #475569;
  --text-subtle: #64748b;
  --hero-glow-1: rgba(59, 130, 246, 0.20);
  --hero-glow-2: rgba(6, 182, 212, 0.18);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-feature-settings: "ss01", "cv11";
  transition: background 200ms ease, color 200ms ease;
}

a { color: inherit; }

/* Selection */
::selection { background: var(--blue); color: white; }

/* ─── Navigation ──────────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  background: color-mix(in oklab, var(--bg) 75%, transparent);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 600; letter-spacing: -0.01em; font-size: 15px;
  text-decoration: none;
}
.nav-brand-mark {
  width: 28px; height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  display: grid; place-items: center;
  color: white; font-weight: 700; font-size: 13px;
  box-shadow: 0 4px 14px -4px rgba(59,130,246,0.55);
}
.nav-links {
  display: flex; align-items: center; gap: 4px;
}
.nav-link {
  text-decoration: none;
  color: var(--text-muted);
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 14px; font-weight: 500;
  transition: color 150ms ease, background 150ms ease;
}
.nav-link:hover { color: var(--text); background: var(--bg-card); }
.nav-link.active { color: var(--text); }
.nav-actions { display: flex; align-items: center; gap: 8px; }

.icon-btn {
  width: 36px; height: 36px;
  display: grid; place-items: center;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 150ms ease;
}
.icon-btn:hover { color: var(--text); border-color: var(--border-strong); transform: translateY(-1px); }
.icon-btn svg { width: 18px; height: 18px; }

.theme-toggle .sun { display: none; }
html[data-theme="light"] .theme-toggle .sun { display: block; }
html[data-theme="light"] .theme-toggle .moon { display: none; }

.nav-cta {
  text-decoration: none;
  font-size: 14px; font-weight: 500;
  padding: 8px 14px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  color: white;
  transition: transform 150ms ease, box-shadow 150ms ease;
  box-shadow: 0 4px 14px -4px rgba(59,130,246,0.55);
}
.nav-cta:hover { transform: translateY(-1px) scale(1.02); box-shadow: 0 8px 20px -4px rgba(59,130,246,0.65); }

@media (max-width: 720px) {
  .nav-link[data-mobile-hide] { display: none; }
}

/* ─── Layout helpers ──────────────────────────────────────────────── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 820px; margin: 0 auto; padding: 0 24px; }

section { padding: 96px 0; position: relative; }
@media (max-width: 720px) { section { padding: 72px 0; } }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 600; letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-2);
  padding: 6px 12px;
  border-radius: 999px;
  background: color-mix(in oklab, var(--cyan) 10%, transparent);
  border: 1px solid color-mix(in oklab, var(--cyan) 25%, transparent);
}

h1, h2, h3, h4 { letter-spacing: -0.02em; line-height: 1.15; margin: 0; font-weight: 700; text-wrap: balance; }
h1 { font-size: clamp(40px, 6vw, 76px); letter-spacing: -0.035em; }
h2 { font-size: clamp(28px, 3.4vw, 44px); }
h3 { font-size: clamp(20px, 2vw, 26px); }
p { text-wrap: pretty; }

.section-head { margin-bottom: 48px; max-width: 720px; }
.section-head h2 { margin-bottom: 12px; }
.section-head p { color: var(--text-muted); font-size: 18px; margin: 0; }

/* ─── Hero ────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  padding: 96px 0 80px;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr;
  gap: 64px;
  align-items: center;
}
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
}
.hero-bg {
  position: absolute; inset: 0;
  pointer-events: none;
  background:
    radial-gradient(800px 400px at 15% 20%, var(--hero-glow-1), transparent 60%),
    radial-gradient(700px 500px at 85% 80%, var(--hero-glow-2), transparent 60%);
  filter: blur(20px);
  opacity: 0.9;
  animation: heroDrift 18s ease-in-out infinite alternate;
}
@keyframes heroDrift {
  0%   { transform: translate3d(0, 0, 0) scale(1); }
  100% { transform: translate3d(40px, -20px, 0) scale(1.06); }
}
.hero-grid-overlay {
  position: absolute; inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--border) 1px, transparent 1px),
    linear-gradient(to bottom, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  opacity: 0.5;
}

.location-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  font-size: 13px; color: var(--text-muted);
  margin-bottom: 24px;
}
.location-badge .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.18);
}

.hero h1 {
  background: linear-gradient(135deg, var(--text) 30%, var(--blue-bright) 70%, var(--cyan-bright));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 16px;
}
.hero-sub {
  font-size: clamp(16px, 1.5vw, 20px);
  color: var(--text);
  font-weight: 500;
  margin: 0 0 16px 0;
}
.hero-sub .pipe { color: var(--accent-2); margin: 0 8px; }
.hero-tag {
  font-size: clamp(15px, 1.3vw, 18px);
  color: var(--text-muted);
  margin: 0 0 32px 0;
  max-width: 540px;
}
.hero-ctas { display: flex; flex-wrap: wrap; gap: 12px; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 22px;
  border-radius: 10px;
  text-decoration: none;
  font-size: 15px; font-weight: 500;
  transition: transform 150ms ease, box-shadow 150ms ease, background 150ms ease, border-color 150ms ease;
  cursor: pointer;
  border: 1px solid transparent;
}
.btn-primary {
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  color: white;
  box-shadow: 0 8px 24px -8px rgba(59, 130, 246, 0.7);
}
.btn-primary:hover { transform: translateY(-2px) scale(1.02); box-shadow: 0 14px 32px -8px rgba(59,130,246,0.85); }
.btn-secondary {
  background: var(--bg-card);
  color: var(--text);
  border-color: var(--border-strong);
}
.btn-secondary:hover { transform: translateY(-2px); background: var(--bg-card-hover); border-color: var(--blue); }
.btn svg { width: 16px; height: 16px; }

/* Hero portrait */
.hero-portrait {
  position: relative;
  border-radius: 24px;
  aspect-ratio: 4 / 5;
  max-width: 440px;
  margin-left: auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: 0 30px 80px -30px rgba(0,0,0,0.6);
}
.hero-portrait img {
  width: 100%; height: 100%; object-fit: cover; display: block;
}
.hero-portrait::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: 24px;
  padding: 1px;
  background: linear-gradient(160deg, rgba(96,165,250,0.55), transparent 40%, rgba(34,211,238,0.45));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  z-index: 2;
}
.hero-portrait-glow {
  position: absolute;
  inset: -40px;
  z-index: -1;
  background: radial-gradient(closest-side, rgba(59,130,246,0.35), transparent 70%);
  filter: blur(20px);
  pointer-events: none;
}

/* ─── About ───────────────────────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
@media (max-width: 880px) { .about-grid { grid-template-columns: 1fr; gap: 32px; } }
.about-prose p {
  font-size: 17px;
  color: var(--text-muted);
  margin: 0 0 20px 0;
}
.about-prose p strong { color: var(--text); font-weight: 600; }

.fact-list {
  display: grid; gap: 14px;
}
.fact {
  display: flex; gap: 16px;
  padding: 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: transform 200ms ease, border-color 200ms ease, background 200ms ease;
}
.fact:hover { transform: translateY(-2px); border-color: var(--border-strong); background: var(--bg-card-hover); }
.fact-icon {
  width: 40px; height: 40px;
  flex-shrink: 0;
  border-radius: 10px;
  background: color-mix(in oklab, var(--blue) 14%, transparent);
  color: var(--blue-bright);
  display: grid; place-items: center;
}
.fact-icon svg { width: 20px; height: 20px; }
.fact-title { font-weight: 600; font-size: 15px; margin: 0 0 4px 0; }
.fact-body { font-size: 14px; color: var(--text-muted); margin: 0; line-height: 1.5; }

/* ─── QuickData section ───────────────────────────────────────────── */
.quickdata {
  background:
    radial-gradient(900px 400px at 80% 0%, var(--hero-glow-1), transparent 60%),
    var(--bg);
}
.quickdata-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}
@media (max-width: 960px) { .quickdata-grid { grid-template-columns: 1fr; } }

.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin: 28px 0 32px;
}
.metric {
  padding: 22px;
  border-radius: 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: transform 200ms ease, border-color 200ms ease;
}
.metric:hover { transform: translateY(-3px); border-color: var(--blue); }
.metric .num {
  font-size: 32px; font-weight: 700; letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--blue-bright), var(--cyan-bright));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  line-height: 1;
}
.metric .label { font-size: 13px; color: var(--text-muted); margin-top: 8px; }

.client-row {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin: 12px 0 0;
}
.client-chip {
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 13px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

/* mock dashboard */
.qd-mock {
  border-radius: 18px;
  background: linear-gradient(180deg, var(--bg-elevated), var(--bg));
  border: 1px solid var(--border-strong);
  box-shadow: 0 30px 60px -20px rgba(0,0,0,0.5);
  overflow: hidden;
  position: relative;
}
.qd-mock-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  background: color-mix(in oklab, var(--bg) 60%, transparent);
}
.qd-mock-bar .traffic { display: flex; gap: 6px; }
.qd-mock-bar .traffic span { width: 10px; height: 10px; border-radius: 50%; }
.qd-mock-bar .traffic span:nth-child(1) { background: #ff5f57; }
.qd-mock-bar .traffic span:nth-child(2) { background: #ffbd2e; }
.qd-mock-bar .traffic span:nth-child(3) { background: #28c840; }
.qd-mock-bar .url {
  margin-left: auto; font-size: 12px; color: var(--text-muted);
  font-family: ui-monospace, monospace;
}
.qd-mock-body { padding: 18px; }
.qd-mock-row {
  display: grid;
  grid-template-columns: 1.2fr 0.6fr 0.6fr 0.6fr 0.4fr;
  gap: 8px;
  font-size: 12px;
  padding: 10px 12px;
  border-bottom: 1px dashed var(--border);
  font-family: ui-monospace, monospace;
  color: var(--text-muted);
}
.qd-mock-row.head {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-subtle);
  border-bottom: 1px solid var(--border-strong);
}
.qd-mock-row .ok { color: #22c55e; }
.qd-mock-row .warn { color: #f59e0b; }
.qd-mock-progress {
  height: 6px; border-radius: 999px;
  background: var(--bg-card); overflow: hidden;
  margin-top: 14px;
}
.qd-mock-progress > span {
  display: block; height: 100%;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  width: 78%;
  animation: qdProgress 3s ease-in-out infinite alternate;
}
@keyframes qdProgress { from { width: 32%; } to { width: 92%; } }
.qd-mock-foot {
  display: flex; justify-content: space-between;
  font-size: 11px; color: var(--text-muted);
  font-family: ui-monospace, monospace;
  margin-top: 8px;
}

/* ─── Skill grid ──────────────────────────────────────────────────── */
.skill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}
.skill {
  padding: 18px;
  border-radius: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex; align-items: center; gap: 12px;
  font-size: 14px; font-weight: 500;
  transition: transform 200ms ease, border-color 200ms ease, background 200ms ease;
}
.skill:hover { transform: translateY(-3px); border-color: var(--blue); background: var(--bg-card-hover); }
.skill-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  flex-shrink: 0;
  box-shadow: 0 0 12px rgba(59,130,246,0.5);
}

/* ─── Speaking timeline ───────────────────────────────────────────── */
.timeline {
  position: relative;
  padding-left: 24px;
  display: grid;
  gap: 18px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 7px; top: 12px; bottom: 12px;
  width: 1px;
  background: linear-gradient(180deg, var(--blue), var(--cyan), transparent);
  opacity: 0.5;
}
.tl-item {
  position: relative;
  padding: 22px 24px;
  border-radius: 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: transform 200ms ease, border-color 200ms ease;
}
.tl-item::before {
  content: "";
  position: absolute;
  left: -22px; top: 28px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--blue);
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--blue) 14%, transparent);
}
.tl-item:hover { transform: translateX(4px); border-color: var(--border-strong); }
.tl-meta { font-size: 12px; color: var(--accent-2); font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 6px; }
.tl-title { font-size: 18px; font-weight: 600; margin: 0 0 4px; }
.tl-desc { font-size: 14px; color: var(--text-muted); margin: 0; }

/* ─── Insights / blog cards ───────────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 22px;
}
.post-card {
  display: flex; flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: transform 250ms ease, border-color 200ms ease, box-shadow 250ms ease;
}
.post-card:hover {
  transform: translateY(-4px);
  border-color: var(--blue);
  box-shadow: 0 20px 40px -20px rgba(59,130,246,0.25);
}
.post-cover {
  aspect-ratio: 16 / 9;
  background: var(--bg-elevated);
  position: relative;
  overflow: hidden;
}
.post-cover img, .post-cover svg { width: 100%; height: 100%; object-fit: cover; display: block; }
.post-cover .cat-pill {
  position: absolute; top: 14px; left: 14px;
  font-size: 11px; font-weight: 600;
  padding: 5px 10px; border-radius: 999px;
  background: rgba(10,22,40,0.7);
  color: white;
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.18);
  letter-spacing: 0.04em; text-transform: uppercase;
}
.post-body { padding: 20px 22px 22px; flex: 1; display: flex; flex-direction: column; }
.post-meta {
  font-size: 12px; color: var(--text-subtle);
  display: flex; gap: 10px; margin-bottom: 10px;
}
.post-meta .sep { opacity: 0.4; }
.post-card h3 { font-size: 19px; line-height: 1.3; margin-bottom: 10px; }
.post-excerpt {
  color: var(--text-muted); font-size: 14px; margin: 0 0 16px;
  flex: 1;
}
.post-readmore {
  font-size: 13px; font-weight: 500; color: var(--blue-bright);
  display: inline-flex; align-items: center; gap: 6px;
}
.post-card:hover .post-readmore svg { transform: translateX(3px); }
.post-readmore svg { width: 14px; height: 14px; transition: transform 200ms ease; }

/* ─── Contact section ────────────────────────────────────────────── */
.contact-row {
  display: flex; flex-wrap: wrap; gap: 14px; justify-content: center;
}
.contact-link {
  display: flex; align-items: center; gap: 12px;
  padding: 16px 22px;
  border-radius: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  text-decoration: none; color: var(--text);
  font-weight: 500; font-size: 15px;
  min-width: 180px;
  transition: transform 200ms ease, border-color 200ms ease, background 200ms ease;
}
.contact-link:hover { transform: translateY(-3px); border-color: var(--blue); background: var(--bg-card-hover); }
.contact-link svg { width: 20px; height: 20px; color: var(--blue-bright); }
.contact-card {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}
.contact-card h2 { margin-bottom: 14px; }
.contact-card p { color: var(--text-muted); font-size: 17px; margin: 0 0 32px; }

/* ─── Footer ─────────────────────────────────────────────────────── */
footer.site-foot {
  padding: 64px 0 40px;
  border-top: 1px solid var(--border);
  background: var(--bg);
}
.foot-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
@media (max-width: 800px) { .foot-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
.foot-brand p { color: var(--text-muted); font-size: 14px; margin: 12px 0 0; max-width: 320px; }
.foot-col h4 { font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 14px; font-weight: 600; }
.foot-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.foot-col a { color: var(--text-muted); text-decoration: none; font-size: 14px; transition: color 150ms ease; }
.foot-col a:hover { color: var(--text); }
.foot-bottom {
  padding-top: 24px; border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  font-size: 13px; color: var(--text-subtle);
  flex-wrap: wrap;
}
.foot-socials { display: flex; gap: 8px; }
.foot-socials a {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border-radius: 8px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: all 150ms ease;
}
.foot-socials a:hover { color: var(--text); border-color: var(--blue); transform: translateY(-2px); }
.foot-socials a svg { width: 16px; height: 16px; }

/* ─── Reveal animation ───────────────────────────────────────────── */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 700ms ease, transform 700ms ease; }
.reveal.in { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-bg { animation: none; }
  .qd-mock-progress > span { animation: none; }
}

/* ─── Blog index page ────────────────────────────────────────────── */
.blog-head { padding: 80px 0 32px; }
.blog-head h1 {
  font-size: clamp(36px, 5vw, 64px);
  margin-bottom: 12px;
  background: linear-gradient(135deg, var(--text) 30%, var(--blue-bright) 70%, var(--cyan-bright));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.blog-head p { font-size: 18px; color: var(--text-muted); max-width: 640px; margin: 0; }

.blog-controls {
  position: sticky;
  top: 64px;
  z-index: 5;
  padding: 18px 0;
  background: color-mix(in oklab, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  margin-bottom: 40px;
}
.blog-controls-inner {
  display: flex; gap: 16px; flex-wrap: wrap; align-items: center;
}
.search-wrap {
  position: relative;
  flex: 1; min-width: 240px; max-width: 380px;
}
.search-wrap svg {
  position: absolute; left: 12px; top: 50%; transform: translateY(-50%);
  width: 16px; height: 16px; color: var(--text-subtle);
}
.search-input {
  width: 100%;
  padding: 11px 14px 11px 38px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
}
.search-input:focus { outline: none; border-color: var(--blue); background: var(--bg-card-hover); }

.chip-row { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  padding: 8px 14px; border-radius: 999px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 13px; font-weight: 500;
  cursor: pointer;
  transition: all 150ms ease;
  font-family: inherit;
}
.chip:hover { color: var(--text); border-color: var(--border-strong); }
.chip.active {
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  color: white;
  border-color: transparent;
}

.posts-empty { text-align: center; color: var(--text-muted); padding: 80px 0; }
.load-more-wrap { text-align: center; margin: 48px 0 0; }

/* ─── Post page ──────────────────────────────────────────────────── */
.post-hero {
  padding: 64px 0 32px;
}
.post-hero .back-link {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--text-muted);
  font-size: 14px;
  text-decoration: none;
  margin-bottom: 32px;
  transition: color 150ms ease;
}
.post-hero .back-link:hover { color: var(--text); }
.post-hero .back-link svg { width: 14px; height: 14px; }
.post-hero h1 {
  font-size: clamp(32px, 4.4vw, 56px);
  margin: 16px 0 20px;
}
.post-hero-meta {
  display: flex; gap: 16px; flex-wrap: wrap;
  font-size: 14px; color: var(--text-muted);
  align-items: center;
  margin-bottom: 32px;
}
.post-hero-meta .author {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 500; color: var(--text);
}
.post-hero-meta .author-avatar {
  width: 30px; height: 30px; border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  display: grid; place-items: center;
  color: white; font-size: 11px; font-weight: 700;
  overflow: hidden;
}
.post-hero-meta .author-avatar img { width: 100%; height: 100%; object-fit: cover; }
.post-hero-meta .sep { opacity: 0.4; }

.post-cover-large {
  margin: 0 auto 56px;
  max-width: 1100px;
  border-radius: 18px;
  overflow: hidden;
  aspect-ratio: 16 / 7;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
}
.post-cover-large img, .post-cover-large svg { width: 100%; height: 100%; object-fit: cover; display: block; }

.prose {
  font-size: 17px;
  line-height: 1.75;
  color: var(--text-muted);
  max-width: 720px;
  margin: 0 auto;
}
.prose h2 { font-size: 28px; margin: 48px 0 18px; color: var(--text); }
.prose h3 { font-size: 21px; margin: 36px 0 14px; color: var(--text); }
.prose p { margin: 0 0 18px; }
.prose ul, .prose ol { padding-left: 22px; margin: 0 0 22px; }
.prose li { margin-bottom: 8px; }
.prose a { color: var(--blue-bright); text-decoration: none; border-bottom: 1px solid color-mix(in oklab, var(--blue) 35%, transparent); }
.prose a:hover { color: var(--cyan-bright); border-bottom-color: var(--cyan-bright); }
.prose strong { color: var(--text); font-weight: 600; }
.prose blockquote {
  margin: 32px 0;
  padding: 22px 28px;
  border-left: 3px solid var(--blue);
  background: color-mix(in oklab, var(--blue) 6%, transparent);
  border-radius: 0 14px 14px 0;
  color: var(--text);
  font-size: 19px;
  line-height: 1.55;
  font-style: normal;
  letter-spacing: -0.005em;
}
.prose blockquote p { margin: 0; }
.prose code {
  font-family: ui-monospace, "JetBrains Mono", monospace;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 2px 6px;
  border-radius: 6px;
  font-size: 14px;
}
.prose pre {
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  padding: 18px;
  border-radius: 12px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.6;
  margin: 22px 0;
}
.prose pre code { background: transparent; border: none; padding: 0; }
.prose table {
  width: 100%; border-collapse: collapse; margin: 22px 0;
  font-size: 14px;
}
.prose th, .prose td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}
.prose th { color: var(--text); font-weight: 600; background: var(--bg-card); }
.prose hr { border: none; border-top: 1px solid var(--border); margin: 40px 0; }
.prose img { max-width: 100%; border-radius: 12px; margin: 22px 0; }

/* tags row */
.post-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 40px 0 0; }
.post-tag {
  font-size: 12px; padding: 5px 11px; border-radius: 999px;
  background: var(--bg-card); border: 1px solid var(--border);
  color: var(--text-muted);
}

.share-row {
  display: flex; flex-wrap: wrap; gap: 10px;
  margin-top: 40px; padding: 24px 0;
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  align-items: center;
}
.share-row .label { font-size: 13px; color: var(--text-muted); margin-right: 8px; font-weight: 500; }

.related {
  padding-top: 80px;
}
.related h2 { font-size: 26px; margin-bottom: 24px; }

/* loading state */
.skeleton {
  background: linear-gradient(90deg, var(--bg-card) 0%, var(--bg-card-hover) 50%, var(--bg-card) 100%);
  background-size: 200% 100%;
  animation: skel 1.4s ease-in-out infinite;
  border-radius: 8px;
}
@keyframes skel { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }