/* ---------- Tokens ---------- */
:root {
  /* colour (all text pairs ≥ 4.5:1 on --bg and --surface) */
  --bg: #0b0f14;
  --surface: #121821;
  --surface-2: #18202b;
  --border: #253041;
  --text: #e8edf3;
  --muted: #a3b0bf;
  --accent: #5eead4;
  --accent-ink: #062823;
  --focus: #fbbf24;

  /* type scale (1.25 ratio) */
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-md: 1.25rem;
  --fs-lg: 1.5625rem;
  --fs-xl: clamp(1.95rem, 4vw, 2.44rem);
  --fs-2xl: clamp(2.6rem, 8vw, 4.77rem);

  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  /* spacing */
  --s1: 0.5rem; --s2: 1rem; --s3: 1.5rem; --s4: 2rem; --s5: 3rem; --s6: 5rem;
  --radius: 14px;
  --max: 72rem;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; overflow-x: clip; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 var(--fs-base)/1.65 var(--font);
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
h1, h2, h3 { line-height: 1.15; margin: 0; letter-spacing: -0.02em; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
a { color: inherit; }
.sprite { position: absolute; }
.icon { width: 1.5rem; height: 1.5rem; flex: none; }
.icon-sm { width: 1.1rem; height: 1.1rem; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.container { width: 100%; max-width: var(--max); margin-inline: auto; padding-inline: 1rem; }
@media (min-width: 40rem) { .container { padding-inline: 2rem; } }

/* focus */
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: 6px; }
.skip-link {
  position: absolute; left: 1rem; top: -4rem; z-index: 100;
  background: var(--accent); color: var(--accent-ink); padding: .75rem 1rem;
  border-radius: 8px; font-weight: 600; text-decoration: none;
}
.skip-link:focus { top: 1rem; }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgb(11 15 20 / .85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; min-height: 4rem; }
.brand { display: inline-flex; align-items: center; gap: .75rem; text-decoration: none; font-weight: 600; min-height: 44px; }
.brand-mark {
  display: grid; place-items: center; width: 2.25rem; height: 2.25rem;
  border-radius: 10px; background: var(--accent); color: var(--accent-ink);
  font: 600 var(--fs-sm) var(--mono);
}
.nav-toggle {
  display: grid; place-items: center; width: 44px; height: 44px;
  background: transparent; color: var(--text); border: 1px solid var(--border);
  border-radius: 10px; cursor: pointer;
}
.nav-links {
  position: absolute; top: 100%; left: 0; right: 0;
  display: none; flex-direction: column; gap: .25rem;
  padding: 1rem; background: var(--bg); border-bottom: 1px solid var(--border);
}
.nav-links.open { display: flex; }
.nav-links a:not(.btn) {
  display: flex; align-items: center; min-height: 44px; padding-inline: .75rem;
  color: var(--muted); text-decoration: none; border-radius: 8px;
}
.nav-links a:not(.btn):hover { color: var(--text); background: var(--surface); }
@media (min-width: 48rem) {
  .nav-toggle { display: none; }
  .nav-links {
    position: static; display: flex; flex-direction: row; align-items: center;
    gap: .5rem; padding: 0; background: none; border: 0;
  }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  min-height: 48px; padding: .75rem 1.4rem;
  background: var(--accent); color: var(--accent-ink);
  border: 1px solid var(--accent); border-radius: 999px;
  font-weight: 600; text-decoration: none; overflow-wrap: anywhere;
  transition: transform .2s var(--ease), background-color .2s var(--ease);
}
.btn:hover { transform: translateY(-2px); background: #8ff3e3; }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { background: var(--surface); border-color: var(--muted); }
.btn-small { min-height: 44px; padding: .5rem 1.1rem; }

/* ---------- Hero ---------- */
.hero { padding-block: var(--s6) var(--s5); }
@media (min-width: 48rem) { .hero { padding-block: 8rem 6rem; } }
.eyebrow {
  display: inline-flex; align-items: center; gap: .6rem;
  padding: .35rem .85rem; border: 1px solid var(--border); border-radius: 999px;
  font: 500 var(--fs-sm) var(--mono); color: var(--muted);
}
.status-dot { width: .55rem; height: .55rem; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px rgb(94 234 212 / .18); }
.hero h1 { font-size: var(--fs-2xl); font-weight: 700; margin-top: var(--s3); }
.headline { font-size: var(--fs-lg); color: var(--accent); margin-top: var(--s2); max-width: 40ch; font-weight: 500; line-height: 1.35; }
.lede { font-size: var(--fs-md); color: var(--muted); margin-top: var(--s3); max-width: 58ch; line-height: 1.6; }
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--s2); margin-top: var(--s4); }
.social { display: flex; gap: .5rem; margin-top: var(--s4); }
.social a {
  display: grid; place-items: center; width: 44px; height: 44px;
  color: var(--muted); border: 1px solid var(--border); border-radius: 50%;
  transition: color .2s, border-color .2s;
}
.social a:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- Sections ---------- */
.section { padding-block: var(--s5); border-top: 1px solid var(--border); }
@media (min-width: 48rem) { .section { padding-block: var(--s6); } }
.section-head { margin-bottom: var(--s4); }
.kicker { font: 500 var(--fs-sm) var(--mono); color: var(--accent); margin-bottom: var(--s1); }
.section h2 { font-size: var(--fs-xl); font-weight: 700; }

/* ---------- Projects ---------- */
.projects { display: grid; gap: var(--s3); grid-template-columns: 1fr; }
@media (min-width: 48rem) { .projects { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.project {
  display: flex; flex-direction: column; min-width: 0;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: transform .25s var(--ease), border-color .25s;
}
.project:hover { transform: translateY(-4px); border-color: #3a4a60; }
.project-visual {
  aspect-ratio: 16 / 7; display: flex; align-items: flex-end; padding: 1rem;
  font: 500 var(--fs-sm) var(--mono); color: var(--text);
  border-bottom: 1px solid var(--border);
  background-color: var(--surface-2);
  background-image:
    linear-gradient(rgb(255 255 255 / .04) 1px, transparent 1px),
    linear-gradient(90deg, rgb(255 255 255 / .04) 1px, transparent 1px);
  background-size: 22px 22px;
  position: relative;
}
.project-visual::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(120% 90% at 85% 0%, var(--glow), transparent 60%);
}
.project-visual span { position: relative; background: rgb(11 15 20 / .75); padding: .25rem .6rem; border-radius: 6px; }
.v1 { --glow: rgb(94 234 212 / .28); }
.v2 { --glow: rgb(129 140 248 / .30); }
.v3 { --glow: rgb(251 191 36 / .22); }
.v4 { --glow: rgb(244 114 182 / .24); }
.project-body { display: flex; flex-direction: column; gap: var(--s2); padding: var(--s3); flex: 1; }
.project h3 { font-size: var(--fs-md); font-weight: 600; }
.project p { color: var(--muted); }
.tags { display: flex; flex-wrap: wrap; gap: .4rem; }
.tags li {
  font: 500 .8125rem var(--mono); color: var(--text);
  padding: .2rem .6rem; background: var(--surface-2);
  border: 1px solid var(--border); border-radius: 6px;
}
.project-links { margin-top: auto; padding-top: var(--s1); display: flex; flex-wrap: wrap; gap: 0 var(--s3); }
.project-links a, .more a {
  display: inline-flex; align-items: center; gap: .35rem; min-height: 44px;
  color: var(--accent); font-weight: 600; text-decoration: none;
}
.project-links a:hover, .more a:hover { text-decoration: underline; text-underline-offset: 4px; }
.more { margin-top: var(--s3); }

/* ---------- Skills ---------- */
.skills { display: grid; gap: var(--s3); grid-template-columns: 1fr; }
@media (min-width: 36rem) { .skills { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 64rem) { .skills { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.skill-group { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: var(--s3); }
.skill-group h3 { display: flex; align-items: center; gap: .6rem; font-size: var(--fs-base); font-weight: 600; margin-bottom: var(--s2); }
.skill-group h3 .icon { color: var(--accent); }
.skill-group li { color: var(--muted); padding-block: .3rem; border-top: 1px solid var(--border); }
.skill-group li:first-child { border-top: 0; }

/* ---------- About ---------- */
.about { display: grid; gap: var(--s4); grid-template-columns: 1fr; }
@media (min-width: 56rem) { .about { grid-template-columns: 3fr 2fr; gap: var(--s5); } }
.about-text { display: grid; gap: var(--s2); font-size: 1.0625rem; color: var(--muted); max-width: 62ch; }
.facts { margin: 0; display: grid; gap: 0; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); align-self: start; }
.facts div { padding: var(--s2) var(--s3); border-top: 1px solid var(--border); }
.facts div:first-child { border-top: 0; }
.facts dt { font: 500 var(--fs-sm) var(--mono); color: var(--muted); }
.facts dd { margin: .2rem 0 0; font-weight: 500; }

/* ---------- Contact ---------- */
.contact { text-align: left; }
.contact h2 { font-size: var(--fs-2xl); }
.contact-lede { font-size: var(--fs-md); color: var(--muted); margin-top: var(--s2); max-width: 50ch; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); padding-block: var(--s3); color: var(--muted); font-size: var(--fs-sm); }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--s2); }
.site-footer .social { margin-top: 0; }

/* ---------- Reveal on scroll (only when JS + motion allowed) ---------- */
.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
  .js .reveal { opacity: 1; transform: none; }
  .btn:hover, .project:hover { transform: none; }
}

/* =========================================================
   MOTION LAYER — hero canvas, aurora, scramble, rotator,
   marquee, tilt cards, magnetic buttons, cursor glow
   ========================================================= */

/* scroll progress */
.progress {
  position: fixed; inset: 0 0 auto 0; height: 3px; z-index: 60;
  background: linear-gradient(90deg, var(--accent), #818cf8, #f472b6);
  transform-origin: 0 50%; transform: scaleX(var(--p, 0));
}

/* cursor glow (pointer devices only) */
.cursor-glow {
  position: fixed; left: 0; top: 0; width: 520px; height: 520px; z-index: 0;
  margin: -260px 0 0 -260px; border-radius: 50%; pointer-events: none;
  background: radial-gradient(circle, rgb(94 234 212 / .10), transparent 65%);
  transform: translate3d(var(--cx, -999px), var(--cy, -999px), 0);
  opacity: 0; transition: opacity .4s;
}
.has-pointer .cursor-glow { opacity: 1; }
main, .site-header, .site-footer { position: relative; z-index: 1; }

/* hero */
.hero-wrap { position: relative; overflow: hidden; isolation: isolate; min-height: min(100svh, 56rem); display: flex; align-items: center; }
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; }
.hero-aurora { position: absolute; inset: -20%; z-index: -2; filter: blur(70px); opacity: .55; }
.hero-aurora span { position: absolute; width: 45vmax; height: 45vmax; border-radius: 50%; mix-blend-mode: screen; }
.hero-aurora span:nth-child(1) { background: #0f766e; left: 5%; top: 0; animation: drift1 18s ease-in-out infinite alternate; }
.hero-aurora span:nth-child(2) { background: #4338ca; right: 0; top: 10%; animation: drift2 22s ease-in-out infinite alternate; }
.hero-aurora span:nth-child(3) { background: #9d174d; left: 30%; bottom: -10%; opacity: .6; animation: drift3 26s ease-in-out infinite alternate; }
@keyframes drift1 { to { transform: translate(18vw, 14vh) scale(1.2); } }
@keyframes drift2 { to { transform: translate(-20vw, 18vh) scale(.85); } }
@keyframes drift3 { to { transform: translate(-10vw, -20vh) scale(1.15); } }
.hero-wrap::after { /* fade into page */
  content: ""; position: absolute; inset: auto 0 0 0; height: 30%; z-index: -1;
  background: linear-gradient(transparent, var(--bg));
}
.hero { position: relative; }

.hero h1 { font-size: clamp(2.8rem, 10vw, 6.2rem); line-height: 1; letter-spacing: -0.04em; }
.scramble {
  background: linear-gradient(110deg, #fff 20%, var(--accent) 45%, #c7d2fe 60%, #fff 80%);
  background-size: 250% 100%; -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: shine 6s linear infinite;
}
.scramble .glyph { color: var(--accent); -webkit-text-fill-color: var(--accent); font-family: var(--mono); }
@keyframes shine { to { background-position: -250% 0; } }

.headline { min-height: 2.7em; }
.rotator { color: #fff; border-bottom: 2px solid var(--accent); white-space: nowrap; }
.caret { display: inline-block; width: 3px; height: 1em; margin-left: 4px; vertical-align: -0.12em; background: var(--accent); animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.scroll-cue { position: absolute; right: 2rem; bottom: -3rem; display: none; width: 30px; height: 50px; border: 2px solid var(--muted); border-radius: 20px; }
.scroll-cue span { position: absolute; left: 50%; top: 8px; width: 4px; height: 9px; margin-left: -2px; border-radius: 2px; background: var(--accent); animation: cue 1.6s ease-in-out infinite; }
@keyframes cue { 0% { transform: translateY(0); opacity: 1; } 100% { transform: translateY(18px); opacity: 0; } }
@media (min-width: 64rem) { .scroll-cue { display: block; } }

/* intro sequence for hero items */
.js .hero > * { opacity: 0; transform: translateY(24px); animation: rise .9s var(--ease) forwards; }
.js .hero > :nth-child(1) { animation-delay: .1s; }
.js .hero > :nth-child(2) { animation-delay: .2s; }
.js .hero > :nth-child(3) { animation-delay: .45s; }
.js .hero > :nth-child(4) { animation-delay: .6s; }
.js .hero > :nth-child(5) { animation-delay: .75s; }
.js .hero > :nth-child(6) { animation-delay: .9s; }
.js .hero > :nth-child(7) { animation-delay: 1.1s; }
@keyframes rise { to { opacity: 1; transform: none; } }

/* marquee */
.marquee-wrap { overflow: hidden; padding-block: 1.5rem; }
.marquee { overflow: hidden; border-block: 1px solid var(--border); padding-block: 1.1rem; background: var(--surface); transform: rotate(-1.2deg) scale(1.03); margin-block: 1rem; }
.marquee-track { display: flex; width: max-content; gap: 3rem; animation: marquee 28s linear infinite; }
.marquee span { font: 600 clamp(1.25rem, 3vw, 2rem) var(--font); letter-spacing: -0.02em; color: var(--muted); display: inline-flex; align-items: center; gap: 3rem; }
.marquee span::after { content: "✦"; color: var(--accent); font-size: .6em; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* section titles: masked slide-up */
.split { display: inline-block; overflow: hidden; vertical-align: bottom; }
.split > span { display: inline-block; transform: translateY(105%); transition: transform .9s var(--ease); }
.in .split > span, .split.in > span { transform: none; }

/* project cards: 3D tilt + spotlight + animated border */
.projects { perspective: 1200px; }
.project { position: relative; transform-style: preserve-3d; will-change: transform; }
.project::before { /* spotlight */
  content: ""; position: absolute; inset: 0; z-index: 2; pointer-events: none; border-radius: inherit;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), rgb(94 234 212 / .14), transparent 45%);
  opacity: 0; transition: opacity .3s;
}
.project::after { /* glowing border */
  content: ""; position: absolute; inset: -1px; z-index: 3; pointer-events: none; border-radius: inherit; padding: 1px;
  background: radial-gradient(300px circle at var(--mx, 50%) var(--my, 50%), var(--accent), transparent 60%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity .3s;
}
.project:hover::before, .project:hover::after { opacity: 1; }
.project.tilting { transition: transform .08s linear, border-color .25s; }
.project-visual { overflow: hidden; }
.project-visual::after { /* scanning line */
  content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 40%, rgb(255 255 255 / .07) 50%, transparent 60%);
  background-size: 100% 300%; animation: scan 4s linear infinite;
}
@keyframes scan { from { background-position: 0 100%; } to { background-position: 0 -200%; } }
.project-visual::before { animation: pulse 6s ease-in-out infinite alternate; }
@keyframes pulse { to { transform: scale(1.25) translate(-6%, 8%); } }

/* skills: staggered pop */
.js .skill-group li { opacity: 0; transform: translateX(-10px); transition: opacity .5s, transform .5s var(--ease); }
.in .skill-group li, .skill-group.in li { opacity: 1; transform: none; }
.skill-group:hover { border-color: var(--accent); }
.skill-group { transition: border-color .3s, transform .3s var(--ease); }
.skill-group:hover { transform: translateY(-4px); }

/* contact: huge gradient headline */
.contact h2 { background: linear-gradient(90deg, #fff, var(--accent), #818cf8, #fff); background-size: 300% 100%; -webkit-background-clip: text; background-clip: text; color: transparent; animation: shine 8s linear infinite; }

/* magnetic buttons */
.btn { will-change: transform; }
.btn.magnet { transition: transform .15s ease-out, background-color .2s; }

/* reduced motion: switch everything off */
@media (prefers-reduced-motion: reduce) {
  .hero-aurora span, .scramble, .caret, .marquee-track, .project-visual::after, .project-visual::before,
  .contact h2, .scroll-cue span { animation: none !important; }
  .js .hero > * { opacity: 1; transform: none; animation: none; }
  .split > span, .js .skill-group li { transform: none; opacity: 1; }
  .cursor-glow, .progress { display: none; }
  .marquee { transform: none; }
}