/* =========================================================
   Uttam Gohil — Portfolio theme
   Custom design system (dark / light), no CSS framework.
   ========================================================= */

/* ---------- Tokens ---------- */
:root {
  --bg: #070a14;
  --bg-soft: #0b1020;
  --surface: rgba(255, 255, 255, .035);
  --surface-2: rgba(255, 255, 255, .06);
  --border: rgba(255, 255, 255, .09);
  --border-strong: rgba(255, 255, 255, .16);
  --text: #e9edf8;
  --heading: #ffffff;
  --muted: #96a0bb;
  --accent: #38bdf8;
  --accent-2: #a78bfa;
  --accent-3: #22d3ee;
  --ok: #34d399;
  --shadow: 0 20px 50px -20px rgba(0, 0, 0, .75);
  --radius: 18px;
  --radius-sm: 12px;
  --maxw: 1180px;
  --font: "Plus Jakarta Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

[data-theme="light"] {
  --bg: #f6f7fb;
  --bg-soft: #ffffff;
  --surface: rgba(15, 23, 42, .03);
  --surface-2: rgba(15, 23, 42, .055);
  --border: rgba(15, 23, 42, .10);
  --border-strong: rgba(15, 23, 42, .18);
  --text: #35405a;
  --heading: #0d1425;
  --muted: #64708c;
  --accent: #0ea5e9;
  --accent-2: #7c3aed;
  --accent-3: #0891b2;
  --shadow: 0 18px 40px -24px rgba(15, 23, 42, .35);
}

/* ---------- Base ---------- */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Aurora background */
body::before,
body::after {
  content: "";
  position: fixed;
  z-index: -2;
  width: 55vw;
  height: 55vw;
  max-width: 720px;
  max-height: 720px;
  border-radius: 50%;
  filter: blur(110px);
  opacity: .38;
  pointer-events: none;
}
body::before {
  top: -18vw; left: -12vw;
  background: radial-gradient(circle, var(--accent) 0%, transparent 68%);
  animation: float-a 18s ease-in-out infinite;
}
body::after {
  bottom: -20vw; right: -14vw;
  background: radial-gradient(circle, var(--accent-2) 0%, transparent 68%);
  animation: float-b 22s ease-in-out infinite;
}
[data-theme="light"] body::before,
[data-theme="light"] body::after { opacity: .22; }

@keyframes float-a { 50% { transform: translate3d(6vw, 5vh, 0) scale(1.12); } }
@keyframes float-b { 50% { transform: translate3d(-5vw, -6vh, 0) scale(1.08); } }

h1, h2, h3, h4 {
  color: var(--heading);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -.02em;
  margin: 0 0 .6rem;
}

p { margin: 0 0 1rem; }

a { color: var(--accent); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--accent-2); }

img { max-width: 100%; display: block; }

ul { margin: 0; padding: 0; list-style: none; }

::selection { background: var(--accent); color: #04070f; }

/* Scrollbar */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--accent), var(--accent-2));
  border-radius: 10px;
  border: 3px solid var(--bg);
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 22px;
}

.section { padding: 88px 0; position: relative; }
.section-tight { padding: 56px 0; }

.grid { display: grid; gap: 22px; }
.g-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.g-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* Two-column splits that collapse on tablet */
.split { display: grid; gap: 44px; }
.split-a { grid-template-columns: .85fr 1.15fr; align-items: center; }
.split-b { grid-template-columns: 1.1fr .9fr; align-items: start; }

.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease, background .25s ease;
}
.site-header.is-stuck {
  border-bottom-color: var(--border);
  box-shadow: 0 10px 30px -22px rgba(0, 0, 0, .8);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--heading);
  letter-spacing: -.02em;
}
.brand:hover { color: var(--heading); }
.brand-mark {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border-radius: 10px;
  font-size: .85rem;
  font-weight: 800;
  color: #04070f;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 8px 20px -8px var(--accent);
}

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  position: relative;
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--muted);
  font-size: .93rem;
  font-weight: 600;
  transition: color .2s ease, background .2s ease;
}
.nav-links a:hover { color: var(--heading); background: var(--surface-2); }
.nav-links a.active { color: var(--heading); background: var(--surface-2); }
.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 2px;
  transform: translateX(-50%);
  width: 16px; height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

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

.icon-btn {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border-radius: 11px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 1.05rem;
  cursor: pointer;
  transition: .2s ease;
}
.icon-btn:hover { border-color: var(--border-strong); color: var(--heading); transform: translateY(-2px); }

.nav-toggle { display: none; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: .93rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
}
.btn:hover { transform: translateY(-2px); }

.btn-primary {
  color: #04070f;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 14px 30px -14px var(--accent);
}
.btn-primary:hover { color: #04070f; box-shadow: 0 18px 36px -14px var(--accent-2); }

.btn-ghost {
  color: var(--heading);
  background: var(--surface);
  border-color: var(--border);
}
.btn-ghost:hover { color: var(--heading); border-color: var(--border-strong); background: var(--surface-2); }

.btn-sm { padding: 9px 16px; font-size: .85rem; }

/* ---------- Section titles ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  margin-bottom: 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--accent);
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.section-head { max-width: 660px; margin-bottom: 44px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h2 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); }
.section-head p { color: var(--muted); margin: 0; }

.gradient-text {
  background: linear-gradient(100deg, var(--accent), var(--accent-2) 55%, var(--accent-3));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Cards ---------- */
.card {
  position: relative;
  padding: 26px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  backdrop-filter: blur(8px);
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity .3s ease;
}
.card:hover { transform: translateY(-5px); border-color: var(--border-strong); box-shadow: var(--shadow); }
.card:hover::before { opacity: .9; }

.card h3 { font-size: 1.12rem; }
.card p { color: var(--muted); margin-bottom: 0; font-size: .95rem; }

.card-icon {
  width: 46px; height: 46px;
  display: grid; place-items: center;
  margin-bottom: 16px;
  border-radius: 13px;
  font-size: 1.3rem;
  color: var(--accent);
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 22%, transparent), color-mix(in srgb, var(--accent-2) 18%, transparent));
  border: 1px solid var(--border);
}

/* ---------- Hero ---------- */
.hero { padding: 78px 0 34px; position: relative; }

/* Resume entry inside the mobile menu only */
.nav-resume { display: none; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr .75fr;
  gap: 56px;
  align-items: center;
}

.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 15px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  font-size: .82rem;
  font-weight: 600;
  color: var(--muted);
}
.pulse-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--ok) 70%, transparent);
  animation: pulse 2.2s infinite;
}
@keyframes pulse {
  70% { box-shadow: 0 0 0 9px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

.hero h1 {
  font-size: clamp(2.5rem, 6.2vw, 4.1rem);
  margin: 20px 0 6px;
  font-weight: 800;
}
.hero-role {
  font-size: clamp(1.05rem, 2.4vw, 1.5rem);
  font-weight: 700;
  color: var(--heading);
  min-height: 1.6em;
  margin-bottom: 14px;
}
.typed-cursor {
  display: inline-block;
  width: 3px;
  height: 1.05em;
  margin-left: 3px;
  vertical-align: -.14em;
  background: var(--accent);
  animation: blink .95s steps(2, start) infinite;
}
@keyframes blink { to { opacity: 0; } }

.hero-lead { color: var(--muted); font-size: 1.03rem; max-width: 60ch; }

.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 26px 0 22px; }

.socials { display: flex; gap: 10px; }
.socials a {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  color: var(--muted);
  font-size: 1.05rem;
  transition: .22s ease;
}
.socials a:hover {
  color: #04070f;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent;
  transform: translateY(-3px);
}

/* Hero portrait */
.hero-visual { display: flex; justify-content: center; }
.portrait {
  position: relative;
  width: min(320px, 78vw);
  aspect-ratio: 1;
  border-radius: 28px;
  padding: 6px;
  background: linear-gradient(150deg, var(--accent), var(--accent-2), transparent 70%);
  animation: floaty 7s ease-in-out infinite;
}
.portrait img {
  width: 100%; height: 100%;
  object-fit: cover;
  border-radius: 23px;
  background: var(--bg-soft);
}
@keyframes floaty { 50% { transform: translateY(-14px); } }

.portrait-badge {
  position: absolute;
  right: -14px;
  bottom: 24px;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 10px 15px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-soft) 88%, transparent);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
  font-size: .8rem;
  font-weight: 700;
  color: var(--heading);
}
.portrait-badge i { color: var(--accent); font-size: 1.05rem; }

/* ---------- Stats ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.stat {
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  text-align: center;
  transition: .25s ease;
}
.stat:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.stat b {
  display: block;
  font-size: clamp(1.5rem, 3vw, 2.05rem);
  font-weight: 800;
  letter-spacing: -.03em;
  background: linear-gradient(100deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat span { color: var(--muted); font-size: .85rem; }

/* ---------- Marquee ---------- */
.marquee {
  position: relative;
  overflow: hidden;
  padding: 18px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee-track {
  display: flex;
  gap: 42px;
  width: max-content;
  animation: scroll-x 32s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-weight: 700;
  font-size: .95rem;
  white-space: nowrap;
}
.marquee-track img { width: 22px; height: 22px; }
@keyframes scroll-x { to { transform: translateX(-50%); } }

/* ---------- Timeline ---------- */
.timeline { position: relative; padding-left: 34px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 9px; top: 6px; bottom: 6px;
  width: 2px;
  background: linear-gradient(var(--accent), var(--accent-2), transparent);
  opacity: .55;
}
.tl-item { position: relative; margin-bottom: 26px; }
.tl-item::before {
  content: "";
  position: absolute;
  left: -33px; top: 26px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 16%, transparent);
}
.tl-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}
.tl-head h3 { margin-bottom: 2px; font-size: 1.16rem; }
.tl-company { color: var(--accent); font-weight: 700; font-size: .95rem; }
.tl-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 4px 0 14px;
  color: var(--muted);
  font-size: .85rem;
}
.tl-meta span { display: inline-flex; align-items: center; gap: 6px; }

.chip-date {
  padding: 5px 13px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--heading);
  font-size: .78rem;
  font-weight: 700;
  white-space: nowrap;
}

/* Bullet lists */
.bullets li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: .95rem;
}
.bullets li::before {
  content: "";
  position: absolute;
  left: 2px; top: .68em;
  width: 9px; height: 9px;
  border-radius: 3px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  transform: rotate(45deg);
}
.bullets strong { color: var(--heading); font-weight: 700; }

/* ---------- Tech chips ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 9px; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  font-size: .84rem;
  font-weight: 600;
  transition: .22s ease;
}
.chip:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  color: var(--heading);
  box-shadow: 0 12px 26px -18px var(--accent);
}
.chip img { width: 18px; height: 18px; }
.chip-plain { padding: 7px 14px; }

.skill-group { margin-bottom: 26px; }
.skill-group h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.02rem;
  margin-bottom: 16px;
}
.skill-group h3 i { color: var(--accent); }
.skill-group .count {
  margin-left: auto;
  font-size: .78rem;
  font-weight: 700;
  color: var(--muted);
}

/* ---------- Project cards ---------- */
.project {
  display: flex;
  flex-direction: column;
  height: 100%;
}
.project .proj-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.project .card-icon { margin-bottom: 0; }
.proj-link { color: var(--muted); font-size: 1.15rem; transition: .2s ease; }
.project:hover .proj-link { color: var(--accent); transform: translateX(3px); }
.stack {
  margin: 14px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}
.stack span {
  padding: 4px 10px;
  border-radius: 7px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: .74rem;
  font-weight: 700;
  font-family: var(--mono);
}

.featured {
  border-color: var(--border-strong);
  background: linear-gradient(150deg, color-mix(in srgb, var(--accent) 9%, transparent), transparent 55%), var(--surface);
}
.badge-featured {
  position: absolute;
  top: 18px; right: 18px;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: .7rem;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: #04070f;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

/* ---------- Info / contact ---------- */
.info-row {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 16px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  transition: .22s ease;
}
.info-row:hover { transform: translateY(-3px); border-color: var(--border-strong); }
.info-row i {
  width: 42px; height: 42px;
  flex: none;
  display: grid; place-items: center;
  border-radius: 12px;
  font-size: 1.2rem;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 14%, transparent);
}
.info-row small { display: block; color: var(--muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .1em; }
.info-row strong { color: var(--heading); font-weight: 700; font-size: .97rem; word-break: break-word; }

.cta-panel {
  position: relative;
  padding: 54px 34px;
  border: 1px solid var(--border);
  border-radius: 26px;
  text-align: center;
  overflow: hidden;
  background:
    radial-gradient(circle at 20% 0%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 55%),
    radial-gradient(circle at 85% 100%, color-mix(in srgb, var(--accent-2) 16%, transparent), transparent 55%),
    var(--surface);
}
.cta-panel h2 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); }
.cta-panel p { color: var(--muted); max-width: 60ch; margin: 0 auto 26px; }

/* ---------- Detail list (about) ---------- */
.detail-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 22px; }
.detail-list li {
  display: flex;
  gap: 8px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--border);
  font-size: .92rem;
}
.detail-list b { color: var(--heading); font-weight: 700; white-space: nowrap; }
.detail-list span { color: var(--muted); }

/* ---------- Footer ---------- */
.site-footer {
  margin-top: 40px;
  padding: 40px 0 28px;
  border-top: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-soft) 60%, transparent);
}
.footer-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.footer-nav { display: flex; flex-wrap: wrap; gap: 18px; }
.footer-nav a { color: var(--muted); font-size: .9rem; font-weight: 600; }
.footer-nav a:hover { color: var(--accent); }
.copyright { color: var(--muted); font-size: .84rem; margin: 0; }

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s cubic-bezier(.2, .7, .3, 1), transform .7s cubic-bezier(.2, .7, .3, 1);
}
.reveal.visible { opacity: 1; transform: none; }

/* Scroll progress bar */
.progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0;
  z-index: 100;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

/* Back to top */
.to-top {
  position: fixed;
  right: 22px; bottom: 22px;
  z-index: 70;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: .25s ease;
}
.to-top.show { opacity: 1; visibility: visible; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 992px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { order: -1; }
  .g-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .split-a, .split-b { grid-template-columns: 1fr; gap: 34px; }
  .g-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 820px) {
  .nav-toggle { display: grid; }
  .nav-links {
    position: fixed;
    inset: 72px 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 18px 22px 26px;
    background: var(--bg-soft);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    transform: translateY(-14px);
    opacity: 0;
    visibility: hidden;
    transition: .25s ease;
  }
  .nav-links.open { transform: none; opacity: 1; visibility: visible; }
  .nav-links a { padding: 12px 16px; border-radius: 12px; font-size: 1rem; }
  .nav-links a.active::after { display: none; }
  .nav-actions .btn { display: none; }
  .nav-resume { display: block; color: var(--accent) !important; }
}

@media (max-width: 640px) {
  .section { padding: 62px 0; }
  .g-2, .g-3, .g-4 { grid-template-columns: 1fr; }
  .detail-list { grid-template-columns: 1fr; }
  .portrait-badge { right: 0; }
  .tl-head { flex-direction: column; align-items: flex-start; }
  .cta-panel { padding: 40px 22px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  html { scroll-behavior: auto; }
}