/* ---------- Tokens ---------- */
:root {
  --bg: #05060a;
  --bg-2: #0a0c14;
  --surface: rgba(255, 255, 255, 0.035);
  --surface-hover: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #e8eaf2;
  --muted: #9aa3b5;
  --faint: #626b7f;
  --cyan: #22d3ee;
  --violet: #a78bfa;
  --pink: #f472b6;
  --green: #34d399;
  --grad: linear-gradient(90deg, var(--cyan), var(--violet) 55%, var(--pink));
  --radius: 18px;
  --max: 1120px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  /* theme-dependent surfaces */
  --grid-line: rgba(255,255,255,0.025);
  --nav-bg: rgba(5,6,10,0.72);
  --menu-bg: rgba(5,6,10,0.96);
  --title-grad: linear-gradient(180deg, #fff 30%, #9aa3b5);
  --terminal-bg: rgba(10,12,20,0.85);
  --chip-bg: rgba(255,255,255,0.025);
  --on-grad: #05060a;
  --surface-strong: linear-gradient(180deg, rgba(255,255,255,0.045), rgba(255,255,255,0.015));
  --scrim-1: rgba(5,6,10,0.85);
  --scrim-2: rgba(5,6,10,0.4);
  --page-glow: linear-gradient(transparent, transparent);
  --hud-bg: rgba(10,12,20,0.72);
  --scene-mode: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--page-glow), var(--bg);
  background-attachment: fixed;
  color: var(--text);
  transition: background-color 0.5s var(--ease), color 0.5s var(--ease);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
/* Subtle grid that sits behind every section */
body::before {
  content: "";
  position: fixed; inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 50% 30%, black 20%, transparent 75%);
  pointer-events: none;
  z-index: -1;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
h1, h2, h3 { line-height: 1.15; margin: 0; letter-spacing: -0.02em; }
p { margin: 0 0 1em; }
.mono { font-family: var(--mono); }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
::selection { background: rgba(167, 139, 250, 0.35); }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 6px; }

/* ---------- Scroll progress ---------- */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 2px; width: 100%;
  background: var(--grad);
  transform-origin: 0 50%; transform: scaleX(0);
  z-index: 100;
}

/* ---------- Navigation ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px clamp(20px, 5vw, 48px);
  z-index: 50;
  transition: background 0.4s var(--ease), padding 0.4s var(--ease), border-color 0.4s;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: var(--nav-bg);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--border);
  padding-top: 12px; padding-bottom: 12px;
}
.nav__logo { font-weight: 800; font-size: 20px; display: flex; align-items: center; gap: 6px; }
.nav__dot { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 12px var(--green); }
.nav__links { display: flex; gap: 28px; align-items: center; font-size: 14px; }
.nav__links a { color: var(--muted); position: relative; transition: color 0.25s; }
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: -6px; height: 1px; width: 100%;
  background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform 0.35s var(--ease);
}
.nav__links a:hover, .nav__links a.is-active { color: var(--text); }
.nav__links a:hover::after, .nav__links a.is-active::after { transform: scaleX(1); }
.nav__links .nav__cta {
  color: var(--text); padding: 8px 16px; border: 1px solid var(--border-strong); border-radius: 999px;
}
.nav__links .nav__cta::after { display: none; }
.nav__links .nav__cta:hover { border-color: var(--violet); box-shadow: 0 0 20px rgba(167,139,250,0.25); }
.nav__toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav__toggle span { display: block; width: 22px; height: 2px; background: var(--text); margin: 5px 0; transition: transform 0.3s var(--ease); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 24px; border-radius: 999px; font-weight: 600; font-size: 15px;
  transition: transform 0.25s var(--ease), box-shadow 0.25s, border-color 0.25s, background 0.25s;
}
.btn--primary { background: var(--grad); color: var(--on-grad); background-size: 160% 100%; }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 10px 36px rgba(34,211,238,0.28); background-position: 100% 0; }
.btn--ghost { border: 1px solid var(--border-strong); color: var(--text); background: var(--chip-bg); }
.btn--ghost:hover { transform: translateY(-2px); border-color: var(--cyan); background: rgba(34,211,238,0.06); }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 100svh;
  display: flex; align-items: center;
  padding: 120px clamp(20px, 6vw, 72px) 80px;
  overflow: hidden;
}
/* The 3D scene lives behind the whole page and changes with each section. */
#bg-canvas { position: fixed; inset: 0; width: 100vw; height: 100vh; display: block; z-index: 0; pointer-events: none; }
/* Reading mode: past the hero, the scene fades out behind the text column and
   stays fully visible in the side margins. --scene-center animates the fade. */
@property --scene-center { syntax: "<number>"; inherits: true; initial-value: 1; }
/* --text-edge: where the left text column ends. The story stage plays to the right of it. */
:root { --text-left: clamp(40px, 6vw, 120px); --text-width: min(860px, 58vw); --text-edge: 100vw; }
@media (min-width: 1100px) { :root { --text-edge: calc(var(--text-left) + var(--text-width)); } }
#bg-canvas {
  --scene-center: 1;
  -webkit-mask-image: linear-gradient(90deg, rgba(0,0,0,var(--scene-center)) 0, rgba(0,0,0,var(--scene-center)) var(--text-edge), #000 calc(var(--text-edge) + 90px), #000 100%);
          mask-image: linear-gradient(90deg, rgba(0,0,0,var(--scene-center)) 0, rgba(0,0,0,var(--scene-center)) var(--text-edge), #000 calc(var(--text-edge) + 90px), #000 100%);
  transition: --scene-center 0.9s var(--ease);
}
.scene-reading #bg-canvas { --scene-center: 0.6; }


main, .footer { position: relative; z-index: 1; }
.hero__fallback {
  position: absolute; inset: 0; display: none;
  background:
    radial-gradient(circle at 70% 40%, rgba(167,139,250,0.25), transparent 45%),
    radial-gradient(circle at 85% 70%, rgba(34,211,238,0.18), transparent 40%);
}
.no-webgl .hero__fallback { display: block; }
.hero__content { position: relative; z-index: 2; max-width: 720px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; color: var(--muted); letter-spacing: 0.04em;
  padding: 7px 14px; border: 1px solid var(--border); border-radius: 999px; background: var(--nav-bg);
  backdrop-filter: blur(6px);
}
.pulse-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); position: relative; }
.pulse-dot::after {
  content: ""; position: absolute; inset: -4px; border-radius: 50%; border: 1px solid var(--green);
  animation: ping 2s var(--ease) infinite;
}
@keyframes ping { from { transform: scale(0.6); opacity: 1; } to { transform: scale(2.2); opacity: 0; } }
.hero__title {
  font-size: clamp(48px, 9vw, 104px); font-weight: 800; margin: 22px 0 14px;
  background: var(--title-grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero__typed { font-size: clamp(20px, 2.8vw, 30px); font-weight: 600; color: var(--text); min-height: 1.4em; margin-bottom: 18px; }
.caret { display: inline-block; width: 3px; height: 1em; margin-left: 4px; vertical-align: -0.12em; background: var(--cyan); animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.hero__sub { color: var(--muted); font-size: clamp(16px, 1.6vw, 18px); max-width: 560px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.hero__scroll {
  position: absolute; left: 50%; bottom: 28px; transform: translateX(-50%); z-index: 3;
  font-size: 11px; letter-spacing: 0.2em; color: var(--faint); text-transform: uppercase;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.hero__scroll span { width: 1px; height: 38px; background: linear-gradient(var(--cyan), transparent); animation: drip 2s var(--ease) infinite; transform-origin: top; }
@keyframes drip { 0% { transform: scaleY(0); } 50% { transform: scaleY(1); } 100% { transform: scaleY(1); opacity: 0; } }

/* ---------- Metrics ---------- */
.metrics {
  max-width: var(--max); margin: 0 auto; padding: 0 clamp(20px, 5vw, 40px);
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
  position: relative; z-index: 2; margin-top: -40px;
}
.metric {
  padding: 26px 22px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--surface-strong);
  backdrop-filter: blur(8px);
}
.metric__value { font-size: clamp(32px, 4vw, 44px); font-weight: 800; letter-spacing: -0.03em; }
.metric__value { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.metric__label { color: var(--muted); font-size: 14px; line-height: 1.5; margin-top: 6px; }

/* ---------- Sections ---------- */
.section { max-width: var(--max); margin: 0 auto; padding: clamp(80px, 12vw, 140px) clamp(20px, 5vw, 40px) 0; }
.section--compact { padding-top: clamp(64px, 9vw, 110px); }
.section__head { display: flex; align-items: baseline; gap: 16px; margin-bottom: 40px; }
.section__index { font-size: 13px; color: var(--cyan); }
.section__head h2, .contact h2 { font-size: clamp(32px, 4.6vw, 52px); font-weight: 800; }

/* ---------- About ---------- */
.about { display: grid; grid-template-columns: 1.15fr 1fr; gap: 48px; align-items: center; }
.about__text p { color: var(--muted); font-size: 18px; }
.about__text strong { color: var(--text); font-weight: 600; }
.terminal { border: 1px solid var(--border); border-radius: var(--radius); background: var(--terminal-bg); overflow: hidden; box-shadow: 0 30px 80px rgba(0,0,0,0.45); }
.terminal__bar { display: flex; align-items: center; gap: 7px; padding: 12px 16px; border-bottom: 1px solid var(--border); }
.terminal__bar span { width: 11px; height: 11px; border-radius: 50%; background: #2a2f3c; }
.terminal__bar span:nth-child(1) { background: #ff5f57; } .terminal__bar span:nth-child(2) { background: #febc2e; } .terminal__bar span:nth-child(3) { background: #28c840; }
.terminal__bar em { margin-left: auto; font-style: normal; font-size: 12px; color: var(--faint); }
.terminal pre { margin: 0; padding: 22px; font-size: 13.5px; line-height: 1.75; overflow-x: auto; color: #b8c0d0; }
.terminal .k { color: #c4b5fd; } .terminal .s { color: #6ee7b7; }

/* ---------- Pipeline ---------- */
.pipeline {
  border: 1px solid var(--border); border-radius: var(--radius); padding: 28px 24px 30px; margin-bottom: 28px;
  background: radial-gradient(ellipse at 50% 0%, rgba(34,211,238,0.07), transparent 70%), var(--surface);
}
.pipeline__caption { font-size: 12px; color: var(--faint); text-transform: uppercase; letter-spacing: 0.14em; margin-bottom: 22px; text-align: center; }
.pipeline__track { position: relative; display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; }
.pipeline__line { position: absolute; top: 26px; left: 8%; right: 8%; height: 1px; background: var(--border-strong); overflow: hidden; }
.pipeline__packet {
  position: absolute; top: -1px; left: 0; width: 18%; height: 3px; border-radius: 3px;
  background: var(--grad); box-shadow: 0 0 14px var(--cyan);
  animation: packet 4.8s linear infinite;
}
@keyframes packet { from { transform: translateX(-100%); } to { transform: translateX(560%); } }
.stage { position: relative; display: flex; flex-direction: column; align-items: center; text-align: center; gap: 6px; z-index: 1; }
.stage__icon {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; font-size: 20px;
  background: var(--bg-2); border: 1px solid var(--border-strong); color: var(--muted);
  transition: all 0.45s var(--ease);
}
.stage b { font-size: 14px; font-weight: 600; margin-top: 6px; }
.stage small { font-size: 12px; color: var(--faint); line-height: 1.4; }
.stage.is-active .stage__icon { color: var(--on-grad); background: var(--grad); border-color: transparent; box-shadow: 0 0 28px rgba(34,211,238,0.45); transform: translateY(-3px) scale(1.06); }

/* ---------- Cards ---------- */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.cards--projects { grid-template-columns: repeat(3, 1fr); }
.card {
  position: relative; padding: 28px; border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--surface);
  transition: border-color 0.35s, background 0.35s, transform 0.35s var(--ease);
  transform-style: preserve-3d;
  overflow: hidden;
}
.card::before { /* spotlight that follows the cursor */
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; opacity: 0; transition: opacity 0.35s;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), rgba(167,139,250,0.12), transparent 45%);
}
.card:hover { border-color: var(--border-strong); background: var(--surface-hover); }
.card:hover::before { opacity: 1; }
.card__tag { font-size: 12px; color: var(--cyan); letter-spacing: 0.06em; margin-bottom: 14px; }
.card h3 { font-size: 21px; font-weight: 700; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 15px; }
.card ul { margin: 14px 0 0; padding: 0; list-style: none; }
.card li { position: relative; padding-left: 20px; color: var(--muted); font-size: 14.5px; margin: 7px 0; }
.card li::before { content: ""; position: absolute; left: 2px; top: 0.62em; width: 7px; height: 7px; border-radius: 2px; background: var(--grad); }
.card--link { display: flex; flex-direction: column; }
.card--link p { flex: 1; }
.card__more { font-size: 13px; color: var(--violet); margin-top: 8px; transition: letter-spacing 0.3s var(--ease); }
.card--link:hover .card__more { letter-spacing: 0.05em; }

/* ---------- Timeline ---------- */
.timeline { list-style: none; margin: 0; padding: 0 0 0 28px; position: relative; }
.timeline::before {
  content: ""; position: absolute; left: 6px; top: 8px; bottom: 8px; width: 1px;
  background: linear-gradient(var(--cyan), var(--violet), transparent);
}
.timeline__item { position: relative; padding: 0 0 46px 22px; }
.timeline__item::before {
  content: ""; position: absolute; left: -28px; top: 7px; width: 13px; height: 13px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--cyan); box-shadow: 0 0 14px rgba(34,211,238,0.5);
}
.timeline__meta { font-size: 13px; color: var(--cyan); margin-bottom: 6px; }
.timeline__item h3 { font-size: 22px; font-weight: 700; }
.timeline__item h3 span { color: var(--muted); font-weight: 500; }
.timeline__item ul { margin: 12px 0 0; padding-left: 18px; color: var(--muted); }
.timeline__item li { margin: 6px 0; }
.timeline__item li::marker { color: var(--violet); }

/* ---------- Chips & skills ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.chips span {
  font-size: 13px; padding: 6px 12px; border-radius: 999px; color: var(--text);
  border: 1px solid var(--border); background: var(--chip-bg);
  transition: border-color 0.25s, background 0.25s, transform 0.25s var(--ease);
}
.chips span:hover { border-color: var(--cyan); background: rgba(34,211,238,0.07); transform: translateY(-2px); }
.skills { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.skill-group { padding: 26px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
.skill-group h3 { font-size: 17px; font-weight: 700; }

/* ---------- Beyond & contact ---------- */
.beyond { color: var(--muted); font-size: 18px; max-width: 760px; }
.contact { text-align: center; padding-bottom: 40px; }
.contact__inner {
  padding: clamp(48px, 8vw, 80px) clamp(20px, 5vw, 60px); border-radius: 28px; border: 1px solid var(--border);
  background:
    radial-gradient(ellipse at 20% 0%, rgba(34,211,238,0.12), transparent 55%),
    radial-gradient(ellipse at 80% 100%, rgba(244,114,182,0.10), transparent 55%),
    var(--surface);
}
.contact h2 { margin: 12px 0 16px; }
.contact p { color: var(--muted); font-size: 18px; }
.contact__links { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin-top: 28px; }
.footer {
  max-width: var(--max); margin: 0 auto; padding: 36px clamp(20px, 5vw, 40px) 44px;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-size: 12px; color: var(--faint);
}

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); transition-delay: var(--delay, 0s); }
.reveal.is-visible { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .about { grid-template-columns: 1fr; }
  .cards--projects { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .nav__toggle { display: block; z-index: 2; }
  .nav__links {
    position: fixed; inset: 0; flex-direction: column; justify-content: center; gap: 28px; font-size: 22px;
    background: var(--menu-bg); backdrop-filter: blur(16px);
    opacity: 0; pointer-events: none; transition: opacity 0.35s var(--ease);
  }
  .nav.is-open .nav__links { opacity: 1; pointer-events: auto; }
  .nav.is-open .nav__toggle span:first-child { transform: translateY(3.5px) rotate(45deg); }
  .nav.is-open .nav__toggle span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
  .cards, .cards--projects, .skills { grid-template-columns: 1fr; }
  .pipeline__track { grid-template-columns: repeat(3, 1fr); row-gap: 26px; }
  .pipeline__line { display: none; }
  .hero__scroll { display: none; }
  .hero { align-items: flex-start; padding-top: 110px; }
  .hero__content::before { /* soft scrim so the text stays readable over the scene */
    content: ""; position: absolute; inset: -40px -30px; z-index: -1;
    background: radial-gradient(ellipse at 40% 40%, var(--scrim-1), var(--scrim-2) 60%, transparent 80%);
  }
}
@media (max-width: 460px) {
  .metrics { grid-template-columns: 1fr; }
  .pipeline__track { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- Scene status readout ---------- */
.hud {
  position: fixed; left: 20px; bottom: 20px; z-index: 40;
  display: flex; align-items: center; gap: 10px; max-width: calc(100vw - 40px);
  padding: 9px 14px; border-radius: 999px; font-size: 12px; color: var(--muted);
  background: var(--hud-bg); border: 1px solid var(--border); backdrop-filter: blur(10px);
  transition: opacity 0.4s var(--ease);
}
.hud__dot { width: 7px; height: 7px; border-radius: 50%; flex: none; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); animation: blink 1.2s steps(1) infinite; }
.hud b { color: var(--text); font-weight: 500; }
.no-webgl .hud { display: none; }

/* ---------- Site theme: Sunset Pop (overrides the base tokens above) ---------- */
:root {
  --bg: #fffaf5; --bg-2: #ffffff;
  --surface: rgba(255,255,255,0.6); --surface-hover: rgba(255,255,255,0.9);
  --border: rgba(68,32,10,0.1); --border-strong: rgba(68,32,10,0.2);
  --text: #1c1310; --muted: #5b4a42; --faint: #a08d84;
  --cyan: #f97316; --violet: #db2777; --pink: #9333ea; --green: #16a34a;
  --grid-line: rgba(68,32,10,0.045);
  --nav-bg: rgba(255,250,245,0.8); --menu-bg: rgba(255,250,245,0.97);
  --title-grad: linear-gradient(180deg, #1c1310 35%, #7c2d12);
  --terminal-bg: #1c1310; --chip-bg: rgba(255,255,255,0.75); --on-grad: #ffffff;
  --surface-strong: rgba(255,255,255,0.7);
  --scrim-1: rgba(255,250,245,0.9); --scrim-2: rgba(255,250,245,0.5);
  --page-glow:
    radial-gradient(42% 38% at 6% 8%, rgba(249,115,22,0.2), transparent 70%),
    radial-gradient(38% 34% at 94% 16%, rgba(219,39,119,0.16), transparent 70%),
    radial-gradient(45% 40% at 50% 100%, rgba(147,51,234,0.14), transparent 70%);
  --hud-bg: rgba(255,255,255,0.82);
  --scene-mode: light;
}
#hud-text { transition: opacity 0.2s ease; }

/* Frosted glass so the background scene stays visible but never fights the text */
.card, .skill-group, .pipeline, .contact__inner { backdrop-filter: blur(2px); -webkit-backdrop-filter: blur(2px); }

/* Desktop: content becomes a left column so the story has the right side to itself. */
@media (min-width: 1100px) {
  .section, .metrics { margin-left: var(--text-left); margin-right: auto; max-width: var(--text-width); padding-left: 0; padding-right: 0; }
  .metrics { margin-top: -40px; }
  .about { grid-template-columns: 1fr; gap: 28px; }
  .cards--projects { grid-template-columns: 1fr 1fr; }
  .section.contact { margin-left: auto; margin-right: auto; max-width: var(--max); padding-left: 40px; padding-right: 40px; }
  .footer { margin-left: var(--text-left); }
  .hero { padding-left: var(--text-left); }
}