/* ==========================================================================
   Kush Jayesh Ahir — Portfolio
   Fresh premium design system. Built from scratch (2026).
   Vanilla CSS + design tokens. Dark default, light theme via [data-theme].
   ========================================================================== */

/* ----------------------------- Reset / base ----------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

* { margin: 0; padding: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
  transition: background-color .4s ease, color .4s ease;
}

img { max-width: 100%; display: block; height: auto; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul { list-style: none; }
::selection { background: var(--accent); color: #fff; }

/* ------------------------------- Tokens --------------------------------- */
:root {
  /* Fonts */
  --font-display: "Bricolage Grotesque", "Hanken Grotesk", system-ui, sans-serif;
  --font-body: "Hanken Grotesk", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* Dark theme (default) */
  --bg: #0a0b0f;
  --bg-2: #0c0e13;
  --bg-3: #0e1016;
  --surface: #14161e;
  --surface-2: #181b25;
  --surface-3: #1d212d;
  --border: rgba(255, 255, 255, 0.085);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #edeff4;
  --text-2: #a4abba;
  --text-3: #6f7686;

  --accent: #5b8cff;
  --accent-2: #7aa2ff;
  --accent-ink: #d3e1ff;
  --accent-soft: rgba(91, 140, 255, 0.14);
  --accent-line: rgba(91, 140, 255, 0.35);
  --cyan: #4fd6e3;
  --gold: #f2b950;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);
  --shadow-md: 0 12px 34px -12px rgba(0, 0, 0, .7);
  --shadow-lg: 0 40px 80px -32px rgba(0, 0, 0, .8);
  --glow: 0 0 0 1px var(--accent-line), 0 18px 60px -20px rgba(91, 140, 255, .45);

  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 22px;
  --radius-xl: 30px;

  --maxw: 1180px;
  --gutter: clamp(20px, 5vw, 48px);
  --nav-h: 70px;

  --ease: cubic-bezier(.22, .61, .36, 1);
  --ease-out: cubic-bezier(.16, 1, .3, 1);
}

[data-theme="light"] {
  --bg: #f7f7f4;
  --bg-2: #f3f3ee;
  --bg-3: #efefe9;
  --surface: #ffffff;
  --surface-2: #fbfbf8;
  --surface-3: #f4f4ef;
  --border: rgba(18, 22, 31, 0.10);
  --border-strong: rgba(18, 22, 31, 0.2);
  --text: #14161c;
  --text-2: #4d5462;
  --text-3: #818897;

  --accent: #2f64f0;
  --accent-2: #2456da;
  --accent-ink: #1c3a8a;
  --accent-soft: rgba(47, 100, 240, 0.10);
  --accent-line: rgba(47, 100, 240, 0.28);
  --cyan: #0f9aaa;
  --gold: #b9820f;

  --shadow-sm: 0 1px 2px rgba(20, 24, 38, .06);
  --shadow-md: 0 16px 40px -18px rgba(28, 38, 64, .22);
  --shadow-lg: 0 44px 90px -40px rgba(28, 38, 64, .30);
  --glow: 0 0 0 1px var(--accent-line), 0 22px 60px -24px rgba(47, 100, 240, .30);
}

/* ------------------------------- Layout --------------------------------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

section { position: relative; }

.section {
  padding-block: clamp(72px, 11vw, 140px);
}

.section--tint { background: var(--bg-2); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-weight: 500;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--accent-line);
}

.section-head { max-width: 720px; margin-bottom: clamp(38px, 6vw, 64px); }
.section-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(30px, 5vw, 50px);
  line-height: 1.04;
  letter-spacing: -0.025em;
  margin-top: 18px;
  color: var(--text);
}
.section-sub {
  margin-top: 18px;
  color: var(--text-2);
  font-size: clamp(15px, 2vw, 17.5px);
  max-width: 60ch;
}

/* ------------------------------- Buttons -------------------------------- */
.btn {
  --b-bg: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14.5px;
  letter-spacing: -0.01em;
  line-height: 1;
  position: relative;
  transition: transform .35s var(--ease-out), box-shadow .35s var(--ease), background-color .3s, border-color .3s, color .3s;
  will-change: transform;
}
.btn svg, .btn i { width: 17px; height: 17px; font-size: 16px; }
.btn .arr { transition: transform .35s var(--ease-out); }
.btn:hover .arr { transform: translateX(4px); }

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 10px 30px -12px var(--accent);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 40px -14px var(--accent); }

.btn-ghost {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border-strong);
}
.btn-ghost:hover { transform: translateY(-2px); border-color: var(--accent-line); background: var(--surface-2); }

.btn-soft {
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid var(--accent-line);
}
.btn-soft:hover { transform: translateY(-2px); background: var(--accent); color: #fff; }

.btn-sm { padding: 10px 16px; font-size: 13px; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ----------------------- Scroll progress + nav -------------------------- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 0;
  background: linear-gradient(90deg, var(--accent), var(--cyan));
  z-index: 1200;
}

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: background-color .4s var(--ease), border-color .4s, backdrop-filter .4s, box-shadow .4s;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}
.nav__inner {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  letter-spacing: -0.02em;
}
.brand__mark {
  width: 34px; height: 34px;
  border-radius: 10px;
  display: grid; place-items: center;
  background: linear-gradient(140deg, var(--accent), var(--accent-2));
  color: #fff;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 14px;
  box-shadow: 0 6px 18px -8px var(--accent);
}
.brand small { display: block; font-family: var(--font-mono); font-weight: 400; font-size: 10.5px; letter-spacing: .06em; color: var(--text-3); margin-top: 1px; }

.nav__links {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 5px;
  border-radius: 999px;
  border: 1px solid transparent;
}
.nav.is-scrolled .nav__links { }
.nav__links a {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-2);
  padding: 8px 13px;
  border-radius: 999px;
  position: relative;
  transition: color .25s, background-color .25s;
}
.nav__links a:hover { color: var(--text); }
.nav__links a.active { color: var(--text); background: var(--surface-2); }

.nav__right { display: flex; align-items: center; gap: 10px; }

.theme-toggle {
  width: 40px; height: 40px;
  border-radius: 11px;
  border: 1px solid var(--border);
  background: var(--surface);
  display: grid; place-items: center;
  color: var(--text-2);
  transition: color .25s, border-color .25s, transform .3s, background-color .3s;
}
.theme-toggle:hover { color: var(--text); border-color: var(--border-strong); transform: translateY(-1px); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .moon { display: none; }
[data-theme="light"] .theme-toggle .moon { display: block; }
[data-theme="light"] .theme-toggle .sun { display: none; }

.nav__cta { display: inline-flex; }

.burger {
  display: none;
  width: 42px; height: 42px;
  border-radius: 11px;
  border: 1px solid var(--border);
  background: var(--surface);
  place-items: center;
}
.burger span { display: block; width: 18px; height: 1.8px; background: currentColor; border-radius: 2px; transition: transform .3s var(--ease), opacity .3s; }
.burger span + span { margin-top: 4px; }
body.menu-open .burger span:nth-child(1) { transform: translateY(5.8px) rotate(45deg); }
body.menu-open .burger span:nth-child(2) { opacity: 0; }
body.menu-open .burger span:nth-child(3) { transform: translateY(-5.8px) rotate(-45deg); }

/* mobile sheet */
.mobile-nav {
  position: fixed;
  inset: var(--nav-h) 0 0 0;
  z-index: 999;
  background: color-mix(in srgb, var(--bg) 96%, transparent);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 28px var(--gutter) 40px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity .35s var(--ease), transform .35s var(--ease), visibility .35s;
}
body.menu-open .mobile-nav { opacity: 1; visibility: visible; transform: none; }
.mobile-nav a {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 500;
  letter-spacing: -0.02em;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  display: flex; align-items: center; justify-content: space-between;
}
.mobile-nav a span { font-family: var(--font-mono); font-size: 12px; color: var(--text-3); }
.mobile-nav .btn { margin-top: 22px; justify-content: center; }

/* ------------------------- Background effects --------------------------- */
.bg-fx {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}
.bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--border) 1px, transparent 1px),
    linear-gradient(to bottom, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 0%, #000 30%, transparent 75%);
  mask-image: radial-gradient(ellipse 80% 70% at 50% 0%, #000 30%, transparent 75%);
  opacity: .6;
}
.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: .5;
  animation: drift 18s ease-in-out infinite alternate;
}
.glow--a { width: 520px; height: 520px; top: -160px; left: -80px; background: radial-gradient(circle, var(--accent) 0%, transparent 65%); }
.glow--b { width: 460px; height: 460px; top: -60px; right: -120px; background: radial-gradient(circle, var(--cyan) 0%, transparent 65%); opacity: .35; animation-delay: -6s; }
[data-theme="light"] .glow { opacity: .28; }
[data-theme="light"] .glow--b { opacity: .2; }

@keyframes drift {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  100% { transform: translate3d(40px, 30px, 0) scale(1.12); }
}

/* ------------------------------- Hero ----------------------------------- */
.hero {
  position: relative;
  padding-top: calc(var(--nav-h) + clamp(40px, 8vw, 92px));
  padding-bottom: clamp(60px, 9vw, 110px);
  overflow: hidden;
}
.hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.18fr 0.82fr;
  gap: clamp(36px, 6vw, 72px);
  align-items: center;
}
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 14px 7px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-2);
  box-shadow: var(--shadow-sm);
}
.status-pill .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #34d399;
  box-shadow: 0 0 0 0 rgba(52, 211, 153, .6);
  animation: ping 2.4s var(--ease) infinite;
}
@keyframes ping {
  0% { box-shadow: 0 0 0 0 rgba(52, 211, 153, .55); }
  70%,100% { box-shadow: 0 0 0 7px rgba(52, 211, 153, 0); }
}
.hero h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(40px, 7.2vw, 84px);
  line-height: 0.98;
  letter-spacing: -0.035em;
  margin-top: 22px;
}
.hero h1 .grad {
  background: linear-gradient(105deg, var(--accent) 0%, var(--cyan) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__role {
  margin-top: 22px;
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.8vw, 16px);
  color: var(--text);
  font-weight: 500;
  letter-spacing: -0.01em;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
}
.hero__role .typed {
  color: var(--accent);
  border-right: 2px solid var(--accent);
  padding-right: 2px;
  animation: caret 1s steps(1) infinite;
}
@keyframes caret { 50% { border-color: transparent; } }
.hero__desc {
  margin-top: 22px;
  font-size: clamp(16px, 2vw, 18.5px);
  color: var(--text-2);
  max-width: 50ch;
}
.hero__ctas {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.hero__social {
  margin-top: 28px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.hero__social a {
  width: 42px; height: 42px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  display: grid; place-items: center;
  color: var(--text-2);
  transition: transform .3s var(--ease-out), color .3s, border-color .3s, background-color .3s;
}
.hero__social a:hover { transform: translateY(-3px); color: var(--text); border-color: var(--accent-line); }
.hero__social a svg { width: 19px; height: 19px; }
.hero__social .sep { width: 1px; height: 22px; background: var(--border); }
.hero__social .loc { font-size: 13px; color: var(--text-3); display: inline-flex; gap: 6px; align-items: center; }
.hero__social .loc svg { width: 15px; height: 15px; }

/* hero visual — portrait + floating cards */
.hero__visual { position: relative; }
.portrait-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-strong);
  background: linear-gradient(160deg, var(--surface-2), var(--surface));
  box-shadow: var(--shadow-lg);
  aspect-ratio: 1 / 1.05;
}
.portrait-frame img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center top;
  filter: saturate(1.02) contrast(1.02);
}
.portrait-frame::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 55%, color-mix(in srgb, var(--bg) 70%, transparent) 100%);
}
.portrait-tag {
  position: absolute;
  left: 16px; bottom: 16px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 13px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  background: color-mix(in srgb, var(--bg) 60%, transparent);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-strong);
  color: var(--text);
}
.portrait-tag b { color: var(--accent); font-weight: 600; }

.float-card {
  position: absolute;
  padding: 13px 15px;
  border-radius: 14px;
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 12.5px;
  animation: floaty 6s ease-in-out infinite;
}
.float-card .fc-ic {
  width: 34px; height: 34px; border-radius: 9px;
  display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent);
  flex-shrink: 0;
}
.float-card .fc-ic svg { width: 18px; height: 18px; }
.float-card b { display: block; font-size: 13px; font-weight: 600; color: var(--text); }
.float-card span { color: var(--text-3); font-family: var(--font-mono); font-size: 10.5px; }
.float-card--1 { top: 8%; left: -10%; animation-delay: -1s; }
.float-card--2 { bottom: 16%; right: -12%; animation-delay: -3s; }
.float-card--2 .fc-ic { background: color-mix(in srgb, var(--cyan) 16%, transparent); color: var(--cyan); }
@keyframes floaty {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* marquee strip */
.marquee {
  margin-top: clamp(46px, 7vw, 80px);
  border-block: 1px solid var(--border);
  padding-block: 18px;
  position: relative;
  z-index: 2;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.marquee__track {
  display: flex;
  align-items: center;
  gap: 18px;
  width: max-content;
  animation: scrollx 34s linear infinite;
}
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee__item {
  position: relative;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--text-2);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 42px;
  padding: 7px 15px 7px 8px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  box-shadow: var(--shadow-sm);
  white-space: nowrap;
}
.marquee__item::after {
  content: "›";
  position: absolute;
  right: -15px;
  top: 50%;
  transform: translateY(-52%);
  color: var(--accent);
  opacity: .9;
}
.marquee__logo {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  flex: 0 0 28px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid rgba(14, 18, 28, .1);
  box-shadow: 0 8px 18px -14px rgba(0, 0, 0, .8);
}
.marquee__logo img {
  width: 18px;
  height: 18px;
  object-fit: contain;
}
.marquee__logo--wide img {
  width: 22px;
}
@keyframes scrollx { to { transform: translateX(-50%); } }

/* ----------------------------- Snapshot --------------------------------- */
.snapshot {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.stat {
  padding: 26px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  transition: transform .4s var(--ease-out), border-color .4s, box-shadow .4s;
  position: relative;
  overflow: hidden;
}
.stat::before {
  content: "";
  position: absolute; inset: 0 0 auto 0; height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0; transition: opacity .4s;
}
.stat:hover { transform: translateY(-4px); border-color: var(--accent-line); box-shadow: var(--shadow-md); }
.stat:hover::before { opacity: 1; }
.stat__num {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(32px, 4vw, 44px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--text);
}
.stat__num small { font-size: .5em; color: var(--accent); margin-left: 2px; font-weight: 500; }
.stat__label { margin-top: 12px; color: var(--text-2); font-size: 14px; }
.stat__sub { margin-top: 3px; color: var(--text-3); font-size: 12px; font-family: var(--font-mono); }

/* ------------------------------- About ---------------------------------- */
.about {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: clamp(36px, 5vw, 70px);
  align-items: start;
}
.about__media {
  position: relative;
  max-width: 460px;
}
.about__photo {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  background: var(--surface-2);
}
.about__photo::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 62%, color-mix(in srgb, var(--bg) 22%, transparent) 100%);
}
.about__photo img {
  width: 100%;
  aspect-ratio: 4 / 4.35;
  object-fit: cover;
  object-position: center 16%;
}
.about__chip {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: -34px 18px 0;
  padding: 10px;
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  border: 1px solid var(--border-strong);
  border-radius: 18px;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(16px) saturate(135%);
  -webkit-backdrop-filter: blur(16px) saturate(135%);
}
.about__chip div {
  min-width: 0;
  padding: 11px 10px 10px;
  text-align: center;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-2);
}
.about__chip b {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(15px, 1.45vw, 18px);
  font-weight: 700;
  line-height: 1.05;
  color: var(--text);
}
.about__chip span {
  display: block;
  margin-top: 5px;
  font-size: 10.5px;
  line-height: 1.2;
  color: var(--text-3);
  font-family: var(--font-mono);
  white-space: nowrap;
}

.about__body p { color: var(--text-2); font-size: 16.5px; }
.about__body p + p { margin-top: 18px; }
.about__body strong { color: var(--text); font-weight: 600; }
.about__meta {
  margin-top: 30px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.about__meta div { background: var(--surface); padding: 16px 18px; }
.about__meta dt { font-family: var(--font-mono); font-size: 11px; letter-spacing: .06em; text-transform: uppercase; color: var(--text-3); }
.about__meta dd { margin-top: 5px; font-weight: 600; color: var(--text); font-size: 14.5px; }
.about__course {
  margin-top: 20px;
  font-size: 14px;
  color: var(--text-2);
}
.about__course b { color: var(--text); font-family: var(--font-mono); font-size: 11px; letter-spacing: .06em; text-transform: uppercase; display: block; margin-bottom: 8px; color: var(--text-3); }
.tagrow { display: flex; flex-wrap: wrap; gap: 7px; }
.tagrow .tag {
  font-size: 12.5px;
  padding: 5px 11px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-2);
}

/* ------------------------------ Skills ---------------------------------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.skill-card {
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  transition: transform .4s var(--ease-out), border-color .4s, box-shadow .4s, background-color .4s;
}
.skill-card:hover { transform: translateY(-4px); border-color: var(--accent-line); box-shadow: var(--shadow-md); }
.skill-card__head { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.skill-card__ic {
  width: 40px; height: 40px; border-radius: 11px;
  display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent);
  border: 1px solid var(--accent-line);
}
.skill-card__ic svg { width: 20px; height: 20px; }
.skill-card__head h3 { font-family: var(--font-display); font-size: 17px; font-weight: 600; letter-spacing: -0.01em; }
.skill-card__head span { font-family: var(--font-mono); font-size: 10.5px; color: var(--text-3); display: block; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-size: 13px;
  padding: 7px 12px;
  border-radius: 9px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-2);
  font-weight: 500;
  transition: color .25s, border-color .25s, background-color .25s, transform .25s;
}
.chip:hover { color: var(--text); border-color: var(--accent-line); background: var(--accent-soft); transform: translateY(-2px); }

/* ----------------------------- Projects --------------------------------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
}
.proj {
  grid-column: span 2;
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 26px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface);
  overflow: hidden;
  transition: transform .45s var(--ease-out), border-color .45s, box-shadow .45s;
  min-height: 250px;
}
.proj::after {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, var(--accent), transparent 45%);
  -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 .45s;
  pointer-events: none;
}
.proj:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.proj:hover::after { opacity: 1; }
.proj--feat { grid-column: span 3; }
.proj__glow {
  position: absolute;
  width: 240px; height: 240px;
  top: -120px; right: -80px;
  background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
  opacity: 0;
  filter: blur(20px);
  transition: opacity .5s;
}
.proj:hover .proj__glow { opacity: .16; }
.proj__top { display: flex; align-items: center; justify-content: space-between; gap: 12px; position: relative; z-index: 1; }
.proj__mark {
  width: 46px; height: 46px;
  border-radius: 13px;
  display: grid; place-items: center;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  color: #fff;
  background: linear-gradient(140deg, var(--accent), var(--accent-2));
  box-shadow: 0 8px 20px -10px var(--accent);
}
.proj__cat {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-3);
  text-align: right;
}
.proj__repo {
  width: 36px; height: 36px; border-radius: 10px;
  border: 1px solid var(--border);
  display: grid; place-items: center;
  color: var(--text-2);
  background: var(--surface-2);
  transition: color .25s, border-color .25s, transform .3s, background-color .25s;
}
.proj__repo:hover { color: var(--text); border-color: var(--accent-line); transform: translateY(-2px); }
.proj__repo svg { width: 17px; height: 17px; }
.proj__name {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-top: 20px;
  position: relative; z-index: 1;
}
.proj__desc { margin-top: 10px; color: var(--text-2); font-size: 14.5px; position: relative; z-index: 1; }
.proj__stack { margin-top: auto; padding-top: 20px; display: flex; flex-wrap: wrap; gap: 7px; position: relative; z-index: 1; }
.proj__stack .t {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 9px;
  border-radius: 7px;
  border: 1px solid var(--border);
  color: var(--text-2);
  background: var(--surface-2);
}
.proj__head-row { display: flex; align-items: center; gap: 12px; }
.projects-foot { margin-top: 36px; display: flex; justify-content: center; }

/* --------------------------- Experience --------------------------------- */
.timeline { position: relative; max-width: 880px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 7px; top: 8px; bottom: 8px;
  width: 1px;
  background: linear-gradient(var(--accent-line), var(--border) 60%, transparent);
}
.tl-item { position: relative; padding-left: 42px; padding-bottom: 38px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: "";
  position: absolute;
  left: 0; top: 6px;
  width: 15px; height: 15px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}
.tl-card {
  padding: 24px 26px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  transition: transform .4s var(--ease-out), border-color .4s, box-shadow .4s;
}
.tl-card:hover { transform: translateX(4px); border-color: var(--accent-line); box-shadow: var(--shadow-md); }
.tl-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 8px; }
.tl-role { font-family: var(--font-display); font-size: 19px; font-weight: 600; letter-spacing: -0.01em; }
.tl-date { font-family: var(--font-mono); font-size: 12px; color: var(--accent); white-space: nowrap; }
.tl-org { margin-top: 4px; color: var(--text-2); font-size: 14.5px; font-weight: 500; }
.tl-org b { color: var(--text); }
.tl-desc { margin-top: 14px; color: var(--text-2); font-size: 14.5px; }
.tl-tags { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 7px; }
.tl-tags .t { font-family: var(--font-mono); font-size: 11px; padding: 4px 9px; border-radius: 7px; background: var(--surface-2); border: 1px solid var(--border); color: var(--text-2); }

/* --------------------------- Education ---------------------------------- */
.edu-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.edu-card {
  padding: 30px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface);
  position: relative;
  overflow: hidden;
  transition: transform .4s var(--ease-out), border-color .4s, box-shadow .4s;
}
.edu-card:hover { transform: translateY(-4px); border-color: var(--accent-line); box-shadow: var(--shadow-md); }
.edu-card__ic {
  width: 48px; height: 48px; border-radius: 13px;
  display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent);
  border: 1px solid var(--accent-line);
  margin-bottom: 20px;
}
.edu-card__ic svg { width: 23px; height: 23px; }
.edu-card h3 { font-family: var(--font-display); font-size: 21px; font-weight: 600; letter-spacing: -0.015em; }
.edu-card .edu-org { margin-top: 7px; color: var(--text-2); font-size: 14.5px; }
.edu-card .edu-meta { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 10px; }
.edu-card .edu-meta span {
  font-family: var(--font-mono); font-size: 12px;
  padding: 5px 11px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--surface-2);
  color: var(--text-2);
}
.edu-card .edu-meta .gpa { color: var(--accent); border-color: var(--accent-line); background: var(--accent-soft); }
.edu-card p { margin-top: 16px; color: var(--text-2); font-size: 14px; }
.edu-card .link {
  margin-top: 18px; display: inline-flex; align-items: center; gap: 7px;
  font-size: 13.5px; font-weight: 600; color: var(--accent);
  transition: gap .3s;
}
.edu-card .link:hover { gap: 11px; }
.edu-card .link svg { width: 15px; height: 15px; }

/* --------------------------- Research ----------------------------------- */
.research-list { display: flex; flex-direction: column; gap: 14px; }
.paper {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 22px;
  align-items: center;
  padding: 24px 28px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  transition: border-color .4s, box-shadow .4s, transform .4s var(--ease-out);
}
.paper:hover { border-color: var(--accent-line); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.paper__no { font-family: var(--font-mono); font-size: 13px; color: var(--accent); }
.paper__title { font-family: var(--font-display); font-size: 18px; font-weight: 600; letter-spacing: -0.01em; line-height: 1.25; }
.paper__desc { margin-top: 7px; color: var(--text-2); font-size: 14px; max-width: 75ch; }
.paper__link {
  display: inline-flex; align-items: center; gap: 8px;
  white-space: nowrap;
  font-size: 13.5px; font-weight: 600; color: var(--text);
  padding: 10px 16px; border-radius: 999px;
  border: 1px solid var(--border-strong); background: var(--surface-2);
  transition: color .25s, border-color .25s, background-color .25s, transform .3s;
}
.paper__link:hover { color: #fff; background: var(--accent); border-color: var(--accent); transform: translateY(-2px); }
.paper__link svg { width: 15px; height: 15px; }

/* ----------------------------- Resume ----------------------------------- */
.resume-cta {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-strong);
  background:
    radial-gradient(ellipse 70% 120% at 0% 0%, var(--accent-soft), transparent 60%),
    var(--surface);
  padding: clamp(34px, 5vw, 56px);
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 40px;
  align-items: center;
}
.resume-cta .bg-grid { opacity: .35; -webkit-mask-image: none; mask-image: none; }
.resume-cta__txt { position: relative; z-index: 1; }
.resume-cta h2 { font-family: var(--font-display); font-size: clamp(26px, 3.5vw, 38px); font-weight: 600; letter-spacing: -0.025em; line-height: 1.05; }
.resume-cta p { margin-top: 16px; color: var(--text-2); font-size: 16px; max-width: 46ch; }
.resume-cta__actions { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 12px; }
.resume-doc {
  position: relative; z-index: 1;
  justify-self: center;
  width: 100%; max-width: 280px;
  aspect-ratio: 1 / 1.28;
  border-radius: 14px;
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-lg);
  padding: 26px 24px;
  transform: rotate(-3deg);
  transition: transform .5s var(--ease-out);
}
.resume-cta:hover .resume-doc { transform: rotate(0deg) translateY(-4px); }
.resume-doc .rd-top { display: flex; justify-content: space-between; align-items: center; }
.resume-doc .rd-name { font-family: var(--font-display); font-weight: 600; font-size: 15px; }
.resume-doc .rd-name span { display: block; font-family: var(--font-mono); font-size: 9px; color: var(--text-3); font-weight: 400; }
.resume-doc .rd-badge { font-family: var(--font-mono); font-size: 9px; color: var(--accent); border: 1px solid var(--accent-line); padding: 3px 7px; border-radius: 6px; }
.resume-doc .rd-line { height: 7px; border-radius: 4px; background: var(--surface-3); margin-top: 12px; }
.resume-doc .rd-line.s { width: 40%; }
.resume-doc .rd-line.m { width: 70%; }
.resume-doc .rd-line.a { width: 90%; background: var(--accent-soft); }
.resume-doc .rd-sec { margin-top: 18px; font-family: var(--font-mono); font-size: 9px; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }

/* ----------------------------- Contact ---------------------------------- */
.contact { text-align: center; }
.contact__inner { max-width: 720px; margin-inline: auto; }
.contact h2 {
  font-family: var(--font-display);
  font-size: clamp(34px, 6vw, 64px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.02;
}
.contact h2 .grad {
  background: linear-gradient(100deg, var(--accent), var(--cyan));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.contact p { margin-top: 20px; color: var(--text-2); font-size: 17px; max-width: 48ch; margin-inline: auto; }
.contact__email {
  margin-top: 30px;
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.4vw, 21px);
  font-weight: 500;
  color: var(--text);
  padding: 14px 24px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  transition: border-color .3s, transform .35s var(--ease-out), box-shadow .35s;
}
.contact__email:hover { border-color: var(--accent-line); transform: translateY(-3px); box-shadow: var(--glow); }
.contact__email svg { width: 19px; height: 19px; color: var(--accent); }
.contact__links { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }

/* ------------------------------ Footer ---------------------------------- */
.footer { border-top: 1px solid var(--border); padding-block: 48px; background: var(--bg-2); }
.footer__inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px; }
.footer__brand { display: flex; align-items: center; gap: 12px; }
.footer__brand p { font-family: var(--font-display); font-weight: 600; font-size: 16px; }
.footer__brand small { color: var(--text-3); font-size: 12.5px; font-family: var(--font-mono); }
.footer__nav { display: flex; flex-wrap: wrap; gap: 22px; }
.footer__nav a { font-size: 13.5px; color: var(--text-2); transition: color .25s; }
.footer__nav a:hover { color: var(--text); }
.footer__social { display: flex; gap: 10px; }
.footer__social a {
  width: 38px; height: 38px; border-radius: 10px;
  border: 1px solid var(--border); display: grid; place-items: center;
  color: var(--text-2); background: var(--surface);
  transition: color .25s, border-color .25s, transform .3s;
}
.footer__social a:hover { color: var(--text); border-color: var(--accent-line); transform: translateY(-2px); }
.footer__social svg { width: 17px; height: 17px; }
.footer__base { margin-top: 28px; padding-top: 22px; border-top: 1px solid var(--border); color: var(--text-3); font-size: 12.5px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

/* ------------------------ Reveal animations ----------------------------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s var(--ease-out), transform .7s var(--ease-out);
  will-change: opacity, transform;
}
[data-reveal="fade"] { transform: none; }
[data-reveal="left"] { transform: translateX(-26px); }
[data-reveal="right"] { transform: translateX(26px); }
[data-reveal="scale"] { transform: scale(.96); }
[data-reveal].in { opacity: 1; transform: none; }

[data-stagger] > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s var(--ease-out), transform .6s var(--ease-out);
}
[data-stagger].in > * { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  [data-reveal], [data-stagger] > * { opacity: 1 !important; transform: none !important; }
  .glow, .float-card, .marquee__track { animation: none !important; }
}

/* ------------------------------ Responsive ------------------------------ */
@media (max-width: 1024px) {
  .hero__inner { grid-template-columns: 1fr; gap: 48px; }
  .hero__visual { max-width: 420px; }
  .float-card--1 { left: 0; }
  .float-card--2 { right: 0; }
  .snapshot { grid-template-columns: repeat(2, 1fr); }
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .proj, .proj--feat { grid-column: span 3; }
  .about { grid-template-columns: 1fr; gap: 56px; }
  .about__media { max-width: 420px; }
  .resume-cta { grid-template-columns: 1fr; }
  .resume-doc { display: none; }
}

@media (max-width: 760px) {
  :root { --nav-h: 64px; }
  .nav__links, .nav__cta { display: none; }
  .burger { display: grid; }
  .snapshot { grid-template-columns: repeat(2, 1fr); }
  .skills-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .proj, .proj--feat { grid-column: 1 / -1; }
  .edu-grid { grid-template-columns: 1fr; }
  .about__meta { grid-template-columns: 1fr; }
  .paper { grid-template-columns: 1fr; gap: 14px; text-align: left; }
  .paper__link { justify-content: center; }
  .footer__base { flex-direction: column; }
  .hero__social { flex-wrap: wrap; }
}

@media (max-width: 420px) {
  .snapshot { grid-template-columns: 1fr; }
  .about__chip {
    grid-template-columns: 1fr;
    margin: 12px 0 0;
  }
  .about__chip div { padding: 12px 14px; }
  .about__chip span { white-space: normal; }
}


/* ===================== FIX: Center skill-card icons ===================== */

.skill-card__ic {
  display: grid !important;
  place-items: center !important;
  place-content: center !important;
  line-height: 0 !important;
  font-size: 0 !important;
}

.skill-card__ic svg {
  position: relative !important;
  inset: auto !important;
  margin: 0 !important;
  display: block !important;
  width: 26px !important;
  height: 26px !important;
  transform: none !important;
  transform-origin: center center !important;
  overflow: visible !important;
}

/* Fine visual alignment for stroke-based icons */
.skill-card__ic svg path,
.skill-card__ic svg circle,
.skill-card__ic svg ellipse,
.skill-card__ic svg rect,
.skill-card__ic svg line,
.skill-card__ic svg polyline,
.skill-card__ic svg polygon {
  vector-effect: non-scaling-stroke;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Keep hover centered too */
.skill-card:hover .skill-card__ic svg {
  transform: none !important;
}