@font-face {
  font-family: 'Orbitron';
  font-style: normal;
  font-weight: 400 900;
  font-display: swap;
  src: url('../assets/fonts/orbitron-latin.woff2') format('woff2');
}
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 300 700;
  font-display: swap;
  src: url('../assets/fonts/space-grotesk-latin.woff2') format('woff2');
}

/* ---------- Design tokens ---------- */
:root {
  --bg: #05060f;
  --bg-raised: rgba(16, 20, 40, 0.55);
  --ink: #e8ecf8;
  --ink-dim: #9aa3c0;
  --cyan: #39e6ff;
  --magenta: #ff2ec4;
  --violet: #7b5cff;
  --line: rgba(122, 140, 200, 0.22);
  --glow-cyan: rgba(57, 230, 255, 0.35);
  --glow-magenta: rgba(255, 46, 196, 0.25);
  --font-display: 'Orbitron', 'Segoe UI', system-ui, sans-serif;
  --font-body: 'Space Grotesk', 'Segoe UI', system-ui, sans-serif;
  --radius: 14px;
  --nav-h: 64px;
  --max-w: 1080px;
}

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; text-decoration-color: var(--magenta); text-underline-offset: 4px; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 4px; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 8px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--bg);
  border: 1px solid var(--cyan);
  border-radius: 8px;
}
.skip-link:focus { left: 8px; }

/* ---------- Ambient background ---------- */
.bg { position: fixed; inset: 0; z-index: -1; overflow: hidden; }
.bg-grid {
  position: absolute;
  inset: -50% 0 0 0;
  background-image:
    linear-gradient(rgba(57, 230, 255, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 230, 255, 0.07) 1px, transparent 1px);
  background-size: 56px 56px;
  transform: perspective(600px) rotateX(28deg) translateY(-8%);
  transform-origin: center top;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9), transparent 75%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9), transparent 75%);
}
.bg-glow {
  position: absolute;
  width: 60vw;
  height: 60vw;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.5;
}
.bg-glow-cyan { top: -20vw; right: -20vw; background: radial-gradient(circle, var(--glow-cyan), transparent 65%); }
.bg-glow-magenta { bottom: -25vw; left: -20vw; background: radial-gradient(circle, var(--glow-magenta), transparent 65%); }
.bg-scanlines {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(to bottom, transparent 0 3px, rgba(0, 0, 0, 0.18) 3px 4px);
  opacity: 0.35;
  pointer-events: none;
}

/* ---------- Navigation ---------- */
.nav-wrap {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(5, 6, 15, 0.72);
  border-bottom: 1px solid var(--line);
}
.nav {
  max-width: var(--max-w);
  margin: 0 auto;
  height: var(--nav-h);
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.nav-logo { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); }
.nav-logo:hover { text-decoration: none; }
.nav-logo-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--bg);
  background: linear-gradient(135deg, var(--cyan), var(--magenta));
  border-radius: 8px;
  box-shadow: 0 0 14px var(--glow-cyan);
}
.nav-logo-text { font-size: 0.85rem; letter-spacing: 0.14em; color: var(--ink); }
.nav-menu { display: flex; gap: 6px; list-style: none; margin: 0; padding: 0; }
.nav-menu a {
  display: block;
  padding: 8px 14px;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-dim);
  border: 1px solid transparent;
  border-radius: 8px;
  transition: color 0.2s, border-color 0.2s, box-shadow 0.2s;
}
.nav-menu a:hover, .nav-menu a:focus-visible {
  color: var(--cyan);
  border-color: var(--line);
  box-shadow: 0 0 12px rgba(57, 230, 255, 0.15);
  text-decoration: none;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 9px;
  background: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  cursor: pointer;
}
.nav-toggle span { height: 2px; background: var(--cyan); border-radius: 2px; transition: transform 0.25s, opacity 0.25s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: calc(100svh - var(--nav-h));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 72px 24px 96px;
  text-align: center;
}
.hero-inner { max-width: 760px; }
.hero-avatar-ring {
  width: 176px;
  height: 176px;
  margin: 0 auto 28px;
  padding: 4px;
  border-radius: 50%;
  background: conic-gradient(from 180deg, var(--cyan), var(--violet), var(--magenta), var(--cyan));
  box-shadow: 0 0 34px var(--glow-cyan), 0 0 60px var(--glow-magenta);
}
.hero-avatar {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  background: #0e1630;
}
.hero-kicker {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.35em;
  color: var(--cyan);
  text-shadow: 0 0 12px var(--glow-cyan);
  margin: 0 0 10px;
}
.chrome-text {
  background: linear-gradient(180deg, #ffffff 0%, #c9d6f2 34%, #6f7ea6 50%, #e8f4ff 52%, #96a4c8 78%, #f2f7ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 2px 14px rgba(150, 180, 255, 0.35));
}
.hero-name {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 7vw, 4.2rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.1;
  margin: 0 0 14px;
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(0.95rem, 2.6vw, 1.25rem);
  font-weight: 500;
  letter-spacing: 0.1em;
  margin: 0 0 12px;
}
.hero-role { color: var(--ink); }
.hero-at { color: var(--magenta); margin: 0 8px; }
.hero-org { color: var(--cyan); }
.hero-tagline { color: var(--ink-dim); font-size: 1.05rem; margin: 0 auto 30px; max-width: 480px; }
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 44px; }

.btn {
  display: inline-block;
  padding: 12px 26px;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  border-radius: 10px;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn-primary {
  color: var(--bg);
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  box-shadow: 0 4px 24px var(--glow-cyan);
}
.btn-primary:hover { box-shadow: 0 6px 32px var(--glow-cyan), 0 0 18px var(--glow-magenta); }
.btn-ghost {
  color: var(--cyan);
  border: 1px solid var(--line);
  background: rgba(57, 230, 255, 0.05);
}
.btn-ghost:hover { border-color: var(--cyan); box-shadow: 0 0 18px rgba(57, 230, 255, 0.2); }

.hero-stats {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;
}
.hero-stats li {
  min-width: 150px;
  padding: 14px 20px;
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--cyan);
  text-shadow: 0 0 16px var(--glow-cyan);
}
.stat-label {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.hero-scroll {
  position: absolute;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 48px;
  border: 1.5px solid var(--line);
  border-radius: 16px;
  display: flex;
  justify-content: center;
  padding-top: 9px;
}
.hero-scroll-chevron {
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  animation: scroll-hint 1.8s ease-in-out infinite;
}
@keyframes scroll-hint {
  0%, 100% { transform: translateY(0) rotate(45deg); opacity: 1; }
  50% { transform: translateY(10px) rotate(45deg); opacity: 0.3; }
}

/* ---------- Sections ---------- */
.section {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 84px 24px;
}
.section-head {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 44px;
}
.section-index {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--magenta);
  text-shadow: 0 0 14px var(--glow-magenta);
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0;
}
.section-rule {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), transparent);
}

/* ---------- Cards ---------- */
.card {
  position: relative;
  padding: 28px 30px;
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}
.card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(57, 230, 255, 0.35), transparent 40%, transparent 60%, rgba(255, 46, 196, 0.3));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  pointer-events: none;
}
.card:hover { box-shadow: 0 8px 40px rgba(57, 230, 255, 0.08); }

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 22px;
  align-items: start;
}
.about-card p { margin: 0 0 1em; color: var(--ink); }
.about-card p:last-child { margin-bottom: 0; }

.terminal-card { padding: 0; overflow: hidden; font-size: 0.92rem; }
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 11px 16px;
  background: rgba(10, 14, 30, 0.9);
  border-bottom: 1px solid var(--line);
}
.terminal-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--line); }
.terminal-dot:nth-child(1) { background: #ff5f56; }
.terminal-dot:nth-child(2) { background: #ffbd2e; }
.terminal-dot:nth-child(3) { background: #27c93f; }
.terminal-title {
  margin-left: 8px;
  font-family: ui-monospace, 'Cascadia Code', Menlo, Consolas, monospace;
  font-size: 0.72rem;
  color: var(--ink-dim);
}
.terminal-body {
  margin: 0;
  padding: 18px 20px;
  font-family: ui-monospace, 'Cascadia Code', Menlo, Consolas, monospace;
  font-size: 0.82rem;
  line-height: 1.9;
  color: var(--cyan);
  white-space: pre-wrap;
  overflow-x: auto;
}
.term-ok { color: #27c93f; }

/* ---------- Experience timeline ---------- */
.timeline { list-style: none; margin: 0; padding: 0; position: relative; }
.timeline::before {
  content: '';
  position: absolute;
  left: 9px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(to bottom, var(--cyan), var(--violet), var(--magenta));
  opacity: 0.5;
}
.timeline-item { position: relative; padding-left: 44px; margin-bottom: 30px; }
.timeline-item:last-child { margin-bottom: 0; }
.timeline-marker {
  position: absolute;
  left: 0;
  top: 30px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 14px var(--glow-cyan);
}
.timeline-marker::after {
  content: '';
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: var(--cyan);
}
.timeline-head { margin-bottom: 14px; }
.timeline-role {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin: 0 0 4px;
  color: var(--ink);
}
.timeline-org { margin: 0; font-weight: 500; color: var(--cyan); }
.timeline-dates {
  margin: 2px 0 0;
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--ink-dim);
  text-transform: uppercase;
}
.timeline-points { margin: 0 0 16px; padding-left: 20px; color: var(--ink); }
.timeline-points li { margin-bottom: 7px; }
.timeline-points li::marker { color: var(--magenta); }

.tag-row { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; margin: 0; padding: 0; }
.tag-row li {
  padding: 5px 13px;
  font-family: var(--font-display);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cyan);
  background: rgba(57, 230, 255, 0.07);
  border: 1px solid rgba(57, 230, 255, 0.25);
  border-radius: 999px;
  white-space: nowrap;
}

/* ---------- Skills ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 22px;
}
.skill-card-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0 0 18px;
}
.skill-icon { color: var(--magenta); text-shadow: 0 0 12px var(--glow-magenta); }

/* ---------- Education ---------- */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 22px;
}
.edu-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 6px;
}
.edu-org { margin: 0; color: var(--cyan); font-weight: 500; }
.edu-dates {
  margin: 2px 0 12px;
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.edu-desc { margin: 0; color: var(--ink-dim); font-size: 0.95rem; }

/* ---------- Contact ---------- */
.section-contact { padding-bottom: 100px; }
.contact-card { max-width: 640px; margin: 0 auto; text-align: center; }
.contact-lead { margin: 0 0 26px; font-size: 1.1rem; }
.contact-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; }
.contact-list li {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}
.contact-label {
  font-family: var(--font-display);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--magenta);
  text-shadow: 0 0 10px var(--glow-magenta);
}
.contact-value { font-size: 1.02rem; word-break: break-all; }
.contact-email { color: var(--cyan); user-select: all; }
.email-sep { color: var(--ink-dim); font-size: 0.85em; }
.contact-fpr {
  display: block;
  margin-top: 4px;
  font-family: ui-monospace, 'Cascadia Code', Menlo, Consolas, monospace;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--ink-dim);
  user-select: all;
}

/* ---------- Footer ---------- */
.footer {
  padding: 34px 24px 40px;
  text-align: center;
  color: var(--ink-dim);
  font-size: 0.85rem;
}
.footer-line {
  max-width: var(--max-w);
  margin: 0 auto 26px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line), transparent);
}
.footer p { margin: 0; }
.footer-blink { color: var(--cyan); animation: blink 1.1s steps(2, start) infinite; }
@keyframes blink { to { visibility: hidden; } }

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible { opacity: 1; transform: none; }
/* If JS never runs, .no-js on <html> is never removed — keep content visible */
html.no-js .reveal { opacity: 1; transform: none; }

/* ---------- Motion preferences ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .about-grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 2px;
    padding: 12px 16px 16px;
    background: rgba(5, 6, 15, 0.96);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    display: none;
  }
  .nav-menu.is-open { display: flex; }
  .nav-menu a { padding: 12px 14px; }
  .section { padding: 64px 20px; }
  .timeline-item { padding-left: 36px; }
  .card { padding: 22px 20px; }
  .hero-stats li { min-width: 130px; padding: 12px 14px; flex: 1; }
}