/* ============================================================
   Razvan-Ioan Petrescu — Portfolio
   Premium consultant aesthetic: deep navy + copper accent
   ============================================================ */

:root {
  --bg: #0a0e1a;
  --bg-elev: #0f1422;
  --bg-card: #131a2a;
  --bg-card-hover: #182238;
  --line: rgba(201, 168, 117, 0.15);
  --line-strong: rgba(201, 168, 117, 0.35);
  --text: #ece8df;
  --text-dim: #a8a195;
  --text-mute: #6b6759;
  --accent: #c9a875;
  --accent-bright: #e6c891;
  --accent-deep: #8b6f47;
  --serif: 'Instrument Serif', 'Cormorant Garamond', Georgia, serif;
  --sans: 'Inter Tight', -apple-system, system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
  --container: 1240px;
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 18px;
  --shadow-soft: 0 10px 40px -12px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 0 1px rgba(201, 168, 117, 0.2), 0 20px 50px -20px rgba(201, 168, 117, 0.15);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
*::selection { background: var(--accent); color: var(--bg); }

/* Skip-to-content link — visible only on keyboard focus */
.skip-link {
  position: absolute;
  top: -100%;
  left: 12px;
  padding: 8px 16px;
  background: var(--accent);
  color: var(--bg);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--r-sm);
  text-decoration: none;
  z-index: 9999;
  transition: top 0.2s ease;
}
.skip-link:focus { top: 12px; }

@media (prefers-reduced-motion: reduce) {
  .skip-link { transition: none; }
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
  background: var(--bg);
}
body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  font-feature-settings: 'ss01', 'cv11';
}

/* Subtle noise texture overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.025;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence baseFrequency='0.9' numOctaves='2'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  mix-blend-mode: overlay;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }

/* ===== Layout primitives ===== */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
  z-index: 2;
}
@media (max-width: 720px) { .container { padding: 0 22px; } }

.section {
  padding: 120px 0;
  position: relative;
}
@media (max-width: 720px) { .section { padding: 80px 0; } }

.section-head {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 60px;
  margin-bottom: 80px;
  align-items: end;
}
@media (max-width: 900px) {
  .section-head { grid-template-columns: 1fr; gap: 24px; margin-bottom: 50px; }
}

.section-eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 14px;
}
.section-eyebrow::before {
  content: '';
  width: 28px;
  height: 1px;
  background: var(--accent);
}

.section-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(40px, 5vw, 68px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-top: 14px;
}
.section-title em {
  font-style: italic;
  color: var(--accent);
}

.section-lede {
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-dim);
  max-width: 620px;
}

/* ===== Navigation ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 18px 0;
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  background: rgba(10, 14, 26, 0.7);
  border-bottom: 1px solid transparent;
  transition: all 0.3s ease;
}
.nav.scrolled {
  border-bottom-color: var(--line);
  padding: 12px 0;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--serif);
  font-size: 22px;
  letter-spacing: -0.01em;
}
.nav-brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  display: grid;
  place-items: center;
  font-family: var(--serif);
  font-size: 16px;
  color: var(--accent);
  background: linear-gradient(135deg, var(--bg-elev), var(--bg-card));
}
.nav-brand-name { font-weight: 400; }
.nav-brand-name em { font-style: italic; color: var(--accent); }

.nav-links {
  display: flex;
  gap: 8px;
  list-style: none;
}
.nav-links a {
  display: block;
  padding: 8px 14px;
  font-size: 13.5px;
  color: var(--text-dim);
  border-radius: var(--r-sm);
  transition: color 0.2s ease, background 0.2s ease;
  font-weight: 450;
}
.nav-links a:hover { color: var(--text); background: rgba(255,255,255,0.03); }
.nav-cta {
  padding: 9px 18px !important;
  border: 1px solid var(--line-strong);
  color: var(--accent) !important;
  font-family: var(--mono);
  font-size: 12px !important;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.nav-cta:hover { background: var(--accent) !important; color: var(--bg) !important; border-color: var(--accent); }

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-links.mobile-open {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-elev);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    padding: 12px 22px;
  }
  .nav-toggle { display: grid; }
}
.nav-toggle {
  display: none;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  color: var(--text-dim);
}

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 140px 0 80px;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 90%;
  max-width: 1180px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
}
.hero-grid-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.4;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, black 30%, transparent 80%);
}
.hero-glow {
  position: absolute;
  width: 700px;
  height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201,168,117,0.12), transparent 60%);
  top: -150px;
  right: -200px;
  filter: blur(40px);
  pointer-events: none;
}
.hero-glow-2 {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(60,90,140,0.18), transparent 60%);
  bottom: -100px;
  left: -150px;
  filter: blur(40px);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 80px;
  align-items: center;
  position: relative;
  z-index: 2;
}
@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; gap: 50px; }
}

.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 14px 7px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  background: rgba(15, 20, 34, 0.6);
  margin-bottom: 32px;
}
.hero-status::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 0 4px rgba(74, 222, 128, 0.18), 0 0 12px rgba(74, 222, 128, 0.6);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.hero-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(48px, 7.5vw, 104px);
  line-height: 0.96;
  letter-spacing: -0.025em;
  color: var(--text);
  margin-bottom: 28px;
}
.hero-title em {
  font-style: italic;
  color: var(--accent);
  font-weight: 400;
}
.hero-title .name-line {
  display: block;
  font-size: 0.42em;
  font-family: var(--mono);
  font-weight: 500;
  font-style: normal;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 18px;
}

.hero-lede {
  font-size: 19px;
  line-height: 1.65;
  color: var(--text-dim);
  max-width: 560px;
  margin-bottom: 40px;
}
.hero-lede strong { color: var(--text); font-weight: 500; }

.hero-cta-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  border-radius: var(--r-sm);
  font-size: 14px;
  font-weight: 500;
  font-family: var(--sans);
  letter-spacing: 0.01em;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}
.btn-primary:hover { background: var(--accent-bright); border-color: var(--accent-bright); transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line-strong);
}
.btn-ghost:hover { background: rgba(255,255,255,0.04); border-color: var(--accent); color: var(--accent); }
.btn-arrow { transition: transform 0.2s ease; }
.btn:hover .btn-arrow { transform: translateX(3px); }

/* Hero ID card */
.hero-card {
  position: relative;
  background: linear-gradient(180deg, var(--bg-elev), var(--bg-card));
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 32px;
  box-shadow: var(--shadow-soft);
}
.hero-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--r-lg);
  padding: 1px;
  background: linear-gradient(135deg, var(--line-strong), transparent 40%, transparent 60%, var(--line-strong));
  -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;
}
.hero-card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--text-mute);
  text-transform: uppercase;
  margin-bottom: 24px;
}
.hero-card-head .dots {
  display: flex; gap: 5px;
}
.hero-card-head .dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--text-mute);
  opacity: 0.4;
}

.signature-mark {
  width: 100%;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  margin-bottom: 24px;
  position: relative;
}
.signature-mark svg {
  width: 70%;
  height: 70%;
  color: var(--accent);
}
.signature-rings {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  pointer-events: none;
}
.signature-rings span {
  position: absolute;
  border: 1px solid var(--line);
  border-radius: 50%;
  animation: ring-rotate 30s linear infinite;
}
.signature-rings span:nth-child(1) { width: 100%; height: 100%; }
.signature-rings span:nth-child(2) { width: 82%; height: 82%; border-style: dashed; animation-direction: reverse; animation-duration: 45s; }
.signature-rings span:nth-child(3) { width: 64%; height: 64%; border-color: var(--line-strong); }
@keyframes ring-rotate { to { transform: rotate(360deg); } }

.hero-card-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  font-size: 12.5px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}
.hero-card-meta dt {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--text-mute);
  text-transform: uppercase;
  margin-bottom: 4px;
}
.hero-card-meta dd { color: var(--text); font-weight: 500; }

/* ===== Marquee strip ===== */
.marquee {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 22px 0;
  overflow: hidden;
  background: var(--bg-elev);
  position: relative;
  z-index: 2;
}
.marquee-track {
  display: flex;
  gap: 60px;
  animation: marquee 50s linear infinite;
  width: max-content;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-item {
  font-family: var(--serif);
  font-style: italic;
  font-size: 28px;
  color: var(--text-dim);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 60px;
}
.marquee-item::after {
  content: '✦';
  color: var(--accent);
  font-style: normal;
  font-size: 14px;
}
@keyframes marquee {
  to { transform: translateX(-50%); }
}

/* ===== About ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}
@media (max-width: 900px) { .about-grid { grid-template-columns: 1fr; gap: 50px; } }

.about-prose p {
  font-size: 18px;
  line-height: 1.75;
  color: var(--text-dim);
  margin-bottom: 22px;
}
.about-prose p strong { color: var(--text); font-weight: 500; }
.about-prose p:first-child::first-letter {
  font-family: var(--serif);
  font-size: 64px;
  line-height: 0.85;
  float: left;
  margin: 6px 12px 0 0;
  color: var(--accent);
}

.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}
.stat {
  background: var(--bg-elev);
  padding: 28px 26px;
}
.stat-num {
  font-family: var(--serif);
  font-size: 56px;
  line-height: 1;
  color: var(--accent);
  font-weight: 400;
  letter-spacing: -0.02em;
}
.stat-num sup {
  font-size: 0.45em;
  vertical-align: top;
  margin-left: 4px;
  color: var(--text-dim);
}
.stat-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-top: 12px;
}

/* ===== Experience timeline ===== */
.timeline {
  position: relative;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(to bottom, var(--line-strong), transparent);
}
.tl-item {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 60px;
  padding: 32px 0 32px 40px;
  position: relative;
  border-bottom: 1px solid var(--line);
}
.tl-item:last-child { border-bottom: none; }
.tl-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 44px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg);
  border: 1px solid var(--line-strong);
}
.tl-item::after {
  content: '';
  position: absolute;
  left: 5px;
  top: 49px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px rgba(201,168,117,0.6);
}
@media (max-width: 820px) {
  .tl-item { grid-template-columns: 1fr; gap: 14px; padding: 28px 0 28px 32px; }
}

.tl-meta {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 0.05em;
  padding-top: 38px;
}
.tl-period { display: block; color: var(--accent); margin-bottom: 6px; }
.tl-location { color: var(--text-mute); }

.tl-content h3 {
  font-family: var(--serif);
  font-size: 32px;
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: 6px;
}
.tl-company {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 22px;
  display: block;
}
.tl-content ul {
  list-style: none;
  margin-bottom: 22px;
}
.tl-content li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
  color: var(--text-dim);
  font-size: 15.5px;
  line-height: 1.6;
}
.tl-content li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 11px;
  width: 10px;
  height: 1px;
  background: var(--accent);
}
.tl-content li strong { color: var(--text); font-weight: 500; }

.tl-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
}
.tl-tag {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--text-dim);
  background: rgba(15,20,34,0.5);
}

/* ===== Skills ===== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.skill-card {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 28px 26px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s ease, transform 0.3s ease;
}
.skill-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-3px);
}
.skill-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 60px;
  height: 60px;
  background: radial-gradient(circle at top left, rgba(201,168,117,0.1), transparent 70%);
  pointer-events: none;
}
.skill-icon {
  width: 38px;
  height: 38px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  display: grid;
  place-items: center;
  color: var(--accent);
  margin-bottom: 18px;
}
.skill-card h3 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 400;
  margin-bottom: 14px;
  color: var(--text);
}
.skill-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.skill-list li {
  font-family: var(--mono);
  font-size: 11.5px;
  padding: 4px 10px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--text-dim);
}

/* ===== Certifications ===== */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}
.cert-card {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 20px 22px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: all 0.25s ease;
  position: relative;
}
.cert-card:hover {
  border-color: var(--line-strong);
  background: var(--bg-card);
  transform: translateY(-2px);
}
.cert-badge {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-deep), var(--accent));
  display: grid;
  place-items: center;
  position: relative;
  box-shadow: 0 4px 14px rgba(201,168,117,0.2);
}
.cert-badge svg { width: 26px; height: 26px; color: var(--bg); }
.cert-info { flex: 1; min-width: 0; }
.cert-info h3 {
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 4px;
  line-height: 1.3;
}
.cert-info span {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-mute);
  letter-spacing: 0.04em;
}
.cert-link {
  color: var(--text-mute);
  transition: color 0.2s ease, transform 0.2s ease;
}
.cert-card:hover .cert-link { color: var(--accent); transform: translate(2px, -2px); }

/* ===== Projects ===== */
.proj-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
@media (max-width: 800px) { .proj-grid { grid-template-columns: 1fr; } }

.proj-card {
  background: linear-gradient(180deg, var(--bg-elev), var(--bg-card));
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 30px 28px;
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}
.proj-card:hover { border-color: var(--line-strong); transform: translateY(-3px); box-shadow: var(--shadow-soft); }
.proj-card::after {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 200px; height: 200px;
  background: radial-gradient(circle at top right, rgba(201,168,117,0.08), transparent 60%);
  pointer-events: none;
  opacity: 0.6;
}
.proj-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
}
.proj-period { color: var(--accent); }
.proj-status {
  padding: 3px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-dim);
  font-size: 10.5px;
  text-transform: uppercase;
}
.proj-status.active { color: #4ade80; border-color: rgba(74,222,128,0.3); }
.proj-card h3 {
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}
.proj-card p {
  color: var(--text-dim);
  font-size: 14.5px;
  line-height: 1.6;
  margin-bottom: 20px;
}
.proj-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.proj-stack span {
  font-family: var(--mono);
  font-size: 10.5px;
  padding: 3px 9px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--text-dim);
  letter-spacing: 0.03em;
}

/* ===== Open Source ===== */
.oss-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}
.oss-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--bg-elev);
  transition: all 0.25s ease;
}
.oss-item:hover { background: var(--bg-card); border-color: var(--line-strong); }
.oss-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line-strong);
  display: grid;
  place-items: center;
  color: var(--accent);
}
.oss-item h4 {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 400;
  margin-bottom: 4px;
}
.oss-item p {
  font-size: 13.5px;
  color: var(--text-dim);
  line-height: 1.5;
}

/* ===== Blog ===== */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}
.blog-card {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 30px 28px;
  background: var(--bg-elev);
  position: relative;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  min-height: 240px;
}
.blog-card:hover {
  background: var(--bg-card);
  border-color: var(--line-strong);
  transform: translateY(-3px);
}
.blog-cat {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.blog-card h3 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 400;
  line-height: 1.25;
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}
.blog-card .blog-source {
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-mute);
  font-family: var(--mono);
}
.blog-arrow {
  color: var(--text-mute);
  transition: color 0.2s ease, transform 0.2s ease;
}
.blog-card:hover .blog-arrow { color: var(--accent); transform: translate(3px, -3px); }

/* ===== Speaking ===== */
.speaking-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
}
.speak-card {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--bg-elev);
}
.speak-year {
  font-family: var(--serif);
  font-size: 32px;
  color: var(--accent);
  margin-bottom: 10px;
  font-style: italic;
}
.speak-card h3 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 400;
  line-height: 1.25;
  margin-bottom: 8px;
}
.speak-card p {
  font-size: 14px;
  color: var(--text-dim);
  margin-bottom: 14px;
}
.speak-link {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  display: inline-flex;
  gap: 6px;
  align-items: center;
}
.speak-link:hover { text-decoration: underline; }

/* ===== Education ===== */
.edu-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
@media (max-width: 720px) { .edu-grid { grid-template-columns: 1fr; } }
.edu-card {
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--bg-elev);
  position: relative;
}
.edu-degree {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 400;
  line-height: 1.25;
  margin-bottom: 8px;
}
.edu-school {
  color: var(--text-dim);
  font-size: 14.5px;
  margin-bottom: 18px;
}
.edu-period {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.05em;
}

/* ===== Contact ===== */
.contact-section {
  padding-bottom: 80px;
}
.contact-wrap {
  background: linear-gradient(180deg, var(--bg-elev), var(--bg-card));
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 70px 60px;
  position: relative;
  overflow: hidden;
}
@media (max-width: 720px) { .contact-wrap { padding: 50px 28px; } }
.contact-wrap::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(201,168,117,0.1), transparent 60%);
  pointer-events: none;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  position: relative;
  z-index: 2;
}
@media (max-width: 820px) { .contact-grid { grid-template-columns: 1fr; gap: 40px; } }

.contact-intro h2 {
  font-family: var(--serif);
  font-size: clamp(36px, 4.5vw, 56px);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 22px;
}
.contact-intro h2 em { font-style: italic; color: var(--accent); }
.contact-intro p {
  color: var(--text-dim);
  font-size: 17px;
  line-height: 1.65;
  margin-bottom: 30px;
}

.contact-channels {
  list-style: none;
  display: grid;
  gap: 10px;
}
.contact-channels li a {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  color: var(--text-dim);
  font-size: 14px;
  transition: all 0.2s ease;
}
.contact-channels li a:hover {
  border-color: var(--line-strong);
  color: var(--text);
  background: rgba(255,255,255,0.03);
}
.contact-channels svg { color: var(--accent); flex-shrink: 0; }

/* Form */
.contact-form { display: grid; gap: 16px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 540px) { .form-row { grid-template-columns: 1fr; } }
.field label {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-mute);
  margin-bottom: 8px;
}
.field input,
.field textarea,
.field select {
  width: 100%;
  background: rgba(10,14,26,0.5);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 13px 14px;
  font: inherit;
  color: var(--text);
  font-size: 14.5px;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--accent);
  background: rgba(10,14,26,0.8);
}
.field textarea { resize: vertical; min-height: 130px; }
.field input::placeholder, .field textarea::placeholder { color: var(--text-mute); }

.form-status {
  font-family: var(--mono);
  font-size: 12px;
  padding: 12px 14px;
  border-radius: var(--r-sm);
  display: none;
}
.form-status.success {
  display: block;
  background: #091a0e;
  border: 1px solid rgba(74,222,128,0.3);
  color: #bbf7d0;
}
.form-status.error {
  display: block;
  background: #1a0909;
  border: 1px solid rgba(239,68,68,0.3);
  color: #fecaca;
}

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--line);
  padding: 60px 0 40px;
  background: var(--bg-elev);
  position: relative;
  z-index: 2;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}
@media (max-width: 720px) { .footer-grid { grid-template-columns: 1fr; gap: 30px; } }
.footer-brand .nav-brand { margin-bottom: 20px; }
.footer-tagline {
  color: var(--text-dim);
  font-size: 14.5px;
  max-width: 360px;
  line-height: 1.6;
}
.footer-col h6 {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-mute);
  margin-bottom: 16px;
}
.footer-col ul { list-style: none; display: grid; gap: 8px; }
.footer-col a {
  font-size: 14px;
  color: var(--text-dim);
  transition: color 0.2s ease;
}
.footer-col a:hover { color: var(--accent); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 30px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--text-mute);
  letter-spacing: 0.05em;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-domains { display: flex; gap: 14px; }
.footer-domains a { color: var(--text-dim); }
.footer-domains a:hover { color: var(--accent); }

/* ===== Reveal animations ===== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}