/* ============ Guy Zarafshan — personal site ============ */
:root{
  --ink: #0a0f1e;
  --ink-2: #101831;
  --ink-3: #16203c;
  --paper: #f4f6fb;
  --muted: #9aa4c2;
  --line: rgba(198,255,77,.14);
  --lime: #c6ff4d;
  --lime-dim: rgba(198,255,77,.12);
  --coral: #ff7a59;
  --blue: #7aa2ff;
  --radius: 18px;
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --max: 1080px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
::selection{ background: var(--lime); color: var(--ink); }
img{ max-width: 100%; height: auto; display: block; }
a{ color: var(--lime); }
h1,h2,h3{ font-family: var(--font-display); line-height: 1.12; margin: 0; letter-spacing: -.01em; }
p{ margin: 0 0 1em; }

:focus-visible{ outline: 3px solid var(--lime); outline-offset: 3px; border-radius: 4px; }

.skip-link{
  position: absolute; left: -999px; top: 0;
  background: var(--lime); color: var(--ink);
  padding: 10px 18px; font-weight: 600; z-index: 200; border-radius: 0 0 10px 0;
}
.skip-link:focus{ left: 0; }

.wrap{ max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.section{ padding: 96px 0; scroll-margin-top: 70px; }
.section-alt{ background: var(--ink-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.kicker{
  font-family: var(--font-display); font-weight: 600;
  color: var(--lime); text-transform: uppercase; letter-spacing: .18em;
  font-size: .8rem; margin-bottom: 10px;
}
h2{ font-size: clamp(2rem, 4.5vw, 3rem); margin-bottom: 14px; }
.h2-aside{ color: var(--muted); font-size: .55em; font-weight: 500; }
.lede{ color: var(--muted); max-width: 620px; font-size: 1.08rem; margin-bottom: 34px; }

/* ---------- Buttons ---------- */
.btn{
  display: inline-block; font-family: var(--font-display); font-weight: 600;
  text-decoration: none; border-radius: 999px; padding: 13px 26px;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease;
  border: 2px solid transparent; cursor: pointer;
}
.btn-primary{ background: var(--lime); color: var(--ink); }
.btn-primary:hover{ transform: translateY(-3px); box-shadow: 0 12px 30px rgba(198,255,77,.35); }
.btn-ghost{ border-color: rgba(244,246,251,.3); color: var(--paper); }
.btn-ghost:hover{ border-color: var(--lime); color: var(--lime); transform: translateY(-3px); }
.btn-small{ padding: 8px 18px; font-size: .9rem; background: var(--lime); color: var(--ink); }
.btn-small:hover{ transform: translateY(-2px); }
.btn-large{ font-size: 1.1rem; padding: 16px 34px; }

/* ---------- Nav ---------- */
.nav{
  position: sticky; top: 0; z-index: 100;
  background: rgba(10,15,30,.78); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-inner{
  max-width: var(--max); margin: 0 auto; padding: 14px 24px;
  display: flex; align-items: center; gap: 22px;
}
.logo{
  font-family: var(--font-display); font-weight: 700; font-size: 1.5rem;
  color: var(--paper); text-decoration: none; margin-right: auto;
}
.logo-dot{ color: var(--lime); }
.nav-links{ display: flex; gap: 4px; flex-wrap: wrap; }
.nav-links a{
  color: var(--muted); text-decoration: none; font-weight: 500; font-size: .95rem;
  padding: 8px 12px; border-radius: 10px; transition: color .15s, background .15s;
}
.nav-links a:hover{ color: var(--lime); background: rgba(198,255,77,.08); }

/* ---------- Hero ---------- */
.hero{ position: relative; overflow: hidden; padding: 90px 0 70px; }
.hero-canvas{ position: absolute; inset: 0; width: 100%; height: 100%; opacity: .8; }
.hero-inner{
  position: relative; z-index: 1;
  max-width: var(--max); margin: 0 auto; padding: 0 24px;
  display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center;
}
.hero-eyebrow{ color: var(--muted); font-weight: 500; margin-bottom: 12px; }
.hero-name{
  font-size: clamp(3.4rem, 9vw, 6.2rem); font-weight: 700; line-height: .98;
  background: linear-gradient(100deg, var(--paper) 30%, var(--lime) 90%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  margin-bottom: 18px;
}
.hero-roles{ font-family: var(--font-display); font-size: 1.25rem; color: var(--paper); margin-bottom: 14px; min-height: 2em; }
.rotator{ color: var(--lime); font-weight: 600; transition: opacity .35s ease; }
.rotator.fading{ opacity: 0; }
.caret{ color: var(--lime); animation: blink 1.1s steps(1) infinite; font-weight: 400; }
@keyframes blink{ 50%{ opacity: 0; } }
.hero-tagline{ color: var(--muted); font-size: 1.12rem; max-width: 480px; margin-bottom: 30px; }
.hero-ctas{ display: flex; gap: 14px; flex-wrap: wrap; }

.hero-photo{ justify-self: center; text-align: center; }
.photo-frame{
  position: relative; border-radius: 200px 200px var(--radius) var(--radius);
  overflow: hidden; max-width: 340px;
  border: 3px solid var(--lime);
  box-shadow: 0 24px 70px rgba(0,0,0,.5), 0 0 0 10px rgba(198,255,77,.07);
  transform: rotate(2.5deg);
  transition: transform .35s cubic-bezier(.22,.61,.36,1);
}
.hero-photo:hover .photo-frame{ transform: rotate(0deg) scale(1.02); }
.photo-frame img{ width: 100%; aspect-ratio: 3/4; object-fit: cover; }
.photo-caption{ color: var(--muted); font-size: .85rem; margin-top: 14px; font-style: italic; }

.scroll-hint{
  position: relative; z-index: 1; display: flex; justify-content: center;
  margin-top: 54px; text-decoration: none;
}
.scroll-hint span{
  width: 26px; height: 44px; border: 2px solid var(--muted); border-radius: 14px;
  position: relative; display: block;
}
.scroll-hint span::after{
  content: ""; position: absolute; left: 50%; top: 8px; width: 4px; height: 9px;
  margin-left: -2px; border-radius: 3px; background: var(--lime);
  animation: wheel 1.8s ease-in-out infinite;
}
@keyframes wheel{ 0%{ transform: translateY(0); opacity: 1; } 60%{ transform: translateY(14px); opacity: 0; } 100%{ transform: translateY(0); opacity: 0; } }

/* ---------- Marquee ---------- */
.marquee{
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  background: var(--lime); color: var(--ink); overflow: hidden; padding: 12px 0;
  transform: rotate(-1deg) scale(1.02);
}
.marquee-track{ display: flex; width: max-content; animation: marquee 26s linear infinite; }
.marquee-track span{
  font-family: var(--font-display); font-weight: 700; font-size: 1.05rem;
  letter-spacing: .06em; white-space: nowrap;
}
@keyframes marquee{ to{ transform: translateX(-50%); } }

/* ---------- About / stats ---------- */
.about-grid{ display: grid; grid-template-columns: 1.2fr .8fr; gap: 48px; align-items: start; }
.about-copy strong{ color: var(--lime); }
.stats{ display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 0; }
.stat{
  background: var(--ink-3); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px 18px; text-align: center; transition: transform .2s ease, border-color .2s ease;
}
.stat:hover{ transform: translateY(-4px); border-color: var(--lime); }
.stat dt{ font-size: .82rem; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; margin-bottom: 6px; }
.stat dd{ margin: 0; font-family: var(--font-display); font-weight: 700; font-size: 2.1rem; color: var(--lime); }

/* ---------- Skills ---------- */
.chips{ display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 10px; }
.chip{
  font-family: var(--font-display); font-weight: 600; font-size: .92rem;
  background: transparent; color: var(--muted);
  border: 2px solid rgba(244,246,251,.22); border-radius: 999px; padding: 9px 20px;
  cursor: pointer; transition: all .18s ease;
}
.chip:hover{ border-color: var(--lime); color: var(--lime); }
.chip.is-active{ background: var(--lime); border-color: var(--lime); color: var(--ink); }
.filter-note{ color: var(--muted); font-style: italic; font-size: .92rem; min-height: 1.6em; }

.skills-grid{
  display: grid; grid-template-columns: repeat(auto-fill, minmax(215px, 1fr));
  gap: 16px; margin-top: 8px;
}
.skill-card{
  background: var(--ink-3); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px 20px; position: relative; overflow: hidden;
  transform: perspective(700px) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg));
  transition: transform .15s ease, border-color .2s ease, opacity .3s ease;
}
.skill-card::before{
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--lime), var(--blue));
  opacity: 0; transition: opacity .2s ease;
}
.skill-card:hover{ border-color: var(--lime); }
.skill-card:hover::before{ opacity: 1; }
.skill-card h3{ font-size: 1.08rem; margin-bottom: 6px; }
.skill-card p{ margin: 0; color: var(--muted); font-size: .92rem; }
.skill-card.is-hidden{ display: none; }
.skill-card.pop{ animation: pop .35s cubic-bezier(.22,.61,.36,1); }
@keyframes pop{ 0%{ transform: scale(.92); opacity: 0; } 100%{ transform: scale(1); opacity: 1; } }

/* ---------- Timeline ---------- */
.timeline{
  list-style: none; margin: 10px 0 0; padding: 0 0 0 8px; position: relative;
}
.timeline::before{ /* track */
  content: ""; position: absolute; left: 19px; top: 8px; bottom: 8px; width: 3px;
  background: rgba(244,246,251,.1); border-radius: 3px;
}
.timeline::after{ /* progress */
  content: ""; position: absolute; left: 19px; top: 8px; bottom: 8px; width: 3px;
  background: linear-gradient(var(--lime), var(--blue)); border-radius: 3px;
  transform-origin: top; transform: scaleY(var(--tl-progress, 0));
}
.t-node{ position: relative; padding: 0 0 34px 52px; }
.t-node:last-child{ padding-bottom: 6px; }
.t-dot{
  position: absolute; left: 11px; top: 6px; width: 19px; height: 19px; border-radius: 50%;
  background: var(--ink); border: 3px solid var(--muted); z-index: 1;
  transition: border-color .3s, box-shadow .3s, background .3s;
}
.t-node.lit .t-dot{ border-color: var(--lime); background: var(--lime); box-shadow: 0 0 18px rgba(198,255,77,.7); }
.t-card{
  background: var(--ink-2); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 26px 24px; transition: transform .2s ease, border-color .2s ease;
}
.t-card:hover{ transform: translateX(6px); border-color: var(--lime); }
.t-kicker{ color: var(--coral); font-weight: 600; font-size: .88rem; margin-bottom: 8px; }
.t-card h3{ font-size: 1.35rem; margin-bottom: 4px; }
.t-org{ color: var(--muted); font-weight: 500; margin-bottom: 12px; }
.t-date{ color: var(--lime); }
.t-card p:last-child{ margin-bottom: 0; }

/* ---------- Education ---------- */
.edu-card{
  background: linear-gradient(135deg, var(--ink-3), var(--ink-2));
  border: 1px solid var(--line); border-radius: calc(var(--radius) + 6px);
  padding: 38px; display: grid; grid-template-columns: 1.4fr 1fr; gap: 36px; align-items: center;
  position: relative; overflow: hidden;
}
.edu-card::after{
  content: "🎓"; position: absolute; right: -18px; bottom: -34px;
  font-size: 9rem; opacity: .08; transform: rotate(-12deg); pointer-events: none;
}
.edu-card h3{ font-size: 1.6rem; margin-bottom: 6px; }
.edu-degree{ color: var(--lime); font-weight: 600; font-size: 1.05rem; margin-bottom: 4px; }
.edu-dates{ color: var(--muted); margin-bottom: 14px; }
.edu-desc{ margin: 0; color: var(--muted); font-style: italic; }
.edu-facts{ margin: 0; display: grid; gap: 16px; }
.edu-facts > div{ background: rgba(198,255,77,.06); border: 1px dashed rgba(198,255,77,.35); border-radius: 14px; padding: 16px 18px; }
.edu-facts dt{ font-size: .78rem; text-transform: uppercase; letter-spacing: .12em; color: var(--lime); margin-bottom: 4px; }
.edu-facts dd{ margin: 0; font-weight: 600; }

/* ---------- Languages ---------- */
.greeting{
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(3rem, 8vw, 5.2rem); color: var(--lime);
  margin: 6px 0 4px; min-height: 1.35em; transition: opacity .3s ease;
}
.greeting.fading{ opacity: 0; }
.lang-grid{ display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 26px; }
.lang-card{
  background: var(--ink-2); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 22px; text-align: center; transition: transform .2s ease, border-color .2s ease;
}
.lang-card:hover{ transform: translateY(-6px) rotate(-.6deg); border-color: var(--blue); }
.lang-card h3{ font-size: 1.5rem; margin-bottom: 8px; }
.lang-level{
  display: inline-block; background: var(--lime-dim); color: var(--lime);
  font-size: .8rem; font-weight: 600; border-radius: 999px; padding: 5px 14px; margin-bottom: 10px;
}
.lang-note{ margin: 0; color: var(--muted); font-style: italic; }

/* ---------- Interests ---------- */
.interest-grid{
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px;
}
.interest-grid li{
  background: var(--ink-3); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 22px; transition: transform .2s ease;
}
.interest-grid li:hover{ transform: translateY(-6px) rotate(.8deg); border-color: var(--coral); }
.interest-emoji{ font-size: 2.2rem; display: block; margin-bottom: 12px; }
.interest-grid h3{ font-size: 1.15rem; margin-bottom: 6px; }
.interest-grid p{ margin: 0; color: var(--muted); font-size: .93rem; }

/* ---------- Contact ---------- */
.contact{ text-align: center; }
.contact .lede{ margin-left: auto; margin-right: auto; }
.contact-loc{ margin-top: 26px; color: var(--muted); }

/* ---------- Footer ---------- */
.footer{ border-top: 1px solid var(--line); padding: 34px 0; background: #070b16; }
.footer-inner{ display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; align-items: center; }
.footer p{ margin: 0; color: var(--muted); font-size: .9rem; }
.footer-joke{ font-style: italic; }

/* ---------- Scroll reveals ---------- */
.reveal{ opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s cubic-bezier(.22,.61,.36,1); }
.reveal.is-visible{ opacity: 1; transform: none; }
.reveal[data-delay="1"]{ transition-delay: .1s; }
.reveal[data-delay="2"]{ transition-delay: .2s; }

/* ---------- Responsive ---------- */
@media (max-width: 900px){
  .hero-inner{ grid-template-columns: 1fr; gap: 44px; }
  .hero-photo{ order: -1; }
  .photo-frame{ max-width: 250px; }
  .about-grid{ grid-template-columns: 1fr; gap: 34px; }
  .edu-card{ grid-template-columns: 1fr; gap: 26px; padding: 30px 26px; }
  .lang-grid{ grid-template-columns: 1fr; }
}
@media (max-width: 640px){
  .section{ padding: 70px 0; }
  .nav-links{ display: none; }
  .stats{ grid-template-columns: 1fr 1fr; }
  .timeline::before, .timeline::after{ left: 14px; }
  .t-node{ padding-left: 42px; }
  .t-dot{ left: 6px; }
  .hero-ctas .btn{ flex: 1 1 auto; text-align: center; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *, *::before, *::after{
    animation-duration: .01ms !important; animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .reveal{ opacity: 1; transform: none; }
  .marquee-track{ animation: none; }
  .hero-canvas{ display: none; }
}