/* ===========================================================
   Pranab Shukla - Personal Website
   Theme: dark, neon-gradient accents, glassy cards
   =========================================================== */

:root {
  --bg:          #0a0b10;
  --bg-soft:     #11131c;
  --surface:     rgba(255, 255, 255, 0.035);
  --surface-2:   rgba(255, 255, 255, 0.06);
  --border:      rgba(255, 255, 255, 0.09);
  --border-lit:  rgba(124, 138, 255, 0.45);
  --text:        #e7e9f3;
  --text-dim:    #a0a4b8;
  --text-faint:  #6b6f85;
  --accent:      #7c8aff;
  --accent-2:    #44d6c9;
  --accent-3:    #b985ff;
  --grad:        linear-gradient(120deg, #7c8aff 0%, #b985ff 45%, #44d6c9 100%);
  --shadow:      0 20px 60px -20px rgba(0, 0, 0, 0.7);
  --radius:      16px;
  --max:         1080px;
  --font-sans:   'Inter', system-ui, -apple-system, sans-serif;
  --font-disp:   'Space Grotesk', var(--font-sans);
  --font-mono:   'JetBrains Mono', ui-monospace, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
strong { color: #fff; font-weight: 600; }
.mono { font-family: var(--font-mono); color: var(--accent-2); }
.grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Animated background ---------- */
.bg-grid {
  position: fixed; inset: 0; z-index: -2;
  background-image:
    linear-gradient(rgba(124, 138, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124, 138, 255, 0.05) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
}
.bg-glow {
  position: fixed; z-index: -1;
  top: -200px; left: 50%; transform: translateX(-50%);
  width: 900px; height: 700px;
  background: radial-gradient(circle, rgba(124, 138, 255, 0.18), transparent 60%);
  filter: blur(40px);
  pointer-events: none;
  animation: float 14s ease-in-out infinite alternate;
}
@keyframes float {
  from { transform: translate(-55%, 0) scale(1); }
  to   { transform: translate(-45%, 40px) scale(1.1); }
}

/* ---------- Navbar ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; gap: 24px;
  padding: 18px clamp(20px, 5vw, 60px);
  transition: background .3s, backdrop-filter .3s, padding .3s, border-color .3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(10, 11, 16, 0.72);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--border);
  padding-top: 12px; padding-bottom: 12px;
}
.nav__brand { display: flex; align-items: center; gap: 9px; font-family: var(--font-disp); font-weight: 700; font-size: 1.05rem; }
.nav__logo { filter: drop-shadow(0 0 8px rgba(124,138,255,.8)); }
.nav__name { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.nav__links { display: flex; gap: 28px; margin-left: auto; }
.nav__links a { font-size: .92rem; color: var(--text-dim); position: relative; transition: color .2s; }
.nav__links a::after {
  content: ''; position: absolute; left: 0; bottom: -6px; height: 2px; width: 0;
  background: var(--grad); transition: width .25s;
}
.nav__links a:hover { color: var(--text); }
.nav__links a:hover::after { width: 100%; }
.nav__cta {
  font-size: .88rem; font-weight: 500; padding: 9px 18px;
  border: 1px solid var(--border-lit); border-radius: 10px; color: var(--accent);
  transition: background .2s, box-shadow .2s, transform .2s;
}
.nav__cta:hover { background: rgba(124,138,255,.12); box-shadow: 0 0 22px -6px var(--accent); transform: translateY(-1px); }
.nav__burger { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 6px; }
.nav__burger span { width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: .3s; }
.nav__burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger.open span:nth-child(2) { opacity: 0; }
.nav__burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block; font-family: var(--font-disp); font-weight: 600;
  font-size: .95rem; padding: 13px 26px; border-radius: 12px; cursor: pointer;
  transition: transform .2s, box-shadow .2s, background .2s, border-color .2s;
}
.btn--primary { background: var(--grad); color: #0a0b10; box-shadow: 0 10px 30px -10px rgba(124,138,255,.6); }
.btn--primary:hover { transform: translateY(-3px); box-shadow: 0 16px 40px -12px rgba(124,138,255,.8); }
.btn--ghost { border: 1px solid var(--border-lit); color: var(--accent); }
.btn--ghost:hover { background: rgba(124,138,255,.1); transform: translateY(-3px); }
.btn--lg { padding: 16px 36px; font-size: 1.05rem; }

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh; display: flex; flex-direction: column;
  justify-content: center; position: relative;
  padding: 120px clamp(20px, 5vw, 60px) 80px;
  max-width: var(--max); margin: 0 auto;
}
.hero__eyebrow { font-family: var(--font-mono); color: var(--accent-2); font-size: .95rem; margin-bottom: 18px; }
.hero__title {
  font-family: var(--font-disp); font-weight: 700;
  font-size: clamp(2.8rem, 9vw, 5.5rem); line-height: 1.02; letter-spacing: -.02em;
}
.hero__subtitle {
  font-family: var(--font-disp); font-weight: 600; color: var(--text-dim);
  font-size: clamp(1.6rem, 6vw, 3.4rem); line-height: 1.1; margin-top: 6px; letter-spacing: -.01em;
}
.hero__lead { max-width: 600px; color: var(--text-dim); font-size: 1.08rem; margin-top: 26px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 38px; }
.hero__socials { display: flex; align-items: center; gap: 14px; margin-top: 34px; font-size: .92rem; color: var(--text-faint); }
.hero__socials a { color: var(--text-dim); transition: color .2s; }
.hero__socials a:hover { color: var(--accent); }
.hero__socials .dot { color: var(--text-faint); }
.hero__scroll {
  position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
  width: 26px; height: 42px; border: 2px solid var(--border); border-radius: 14px;
}
.hero__scroll span {
  position: absolute; top: 8px; left: 50%; transform: translateX(-50%);
  width: 4px; height: 8px; border-radius: 2px; background: var(--accent);
  animation: scroll 1.6s ease-in-out infinite;
}
@keyframes scroll { 0%{opacity:0;top:8px} 30%{opacity:1} 60%{opacity:1} 100%{opacity:0;top:24px} }

/* ---------- Sections ---------- */
.section { max-width: var(--max); margin: 0 auto; padding: 90px clamp(20px, 5vw, 60px); }
.section__head { display: flex; align-items: center; gap: 18px; margin-bottom: 48px; }
.section__num { font-family: var(--font-mono); color: var(--accent); font-size: 1rem; }
.section__title { font-family: var(--font-disp); font-size: clamp(1.7rem, 4vw, 2.4rem); font-weight: 700; letter-spacing: -.01em; white-space: nowrap; }
.section__line { height: 1px; flex: 1; background: linear-gradient(90deg, var(--border), transparent); }

/* ---------- About ---------- */
.about { display: grid; grid-template-columns: 1.5fr 1fr; gap: 48px; align-items: start; }
.about__text p { color: var(--text-dim); margin-bottom: 18px; }
.about__tech { list-style: none; display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px 18px; margin-top: 10px; }
.about__tech li { position: relative; padding-left: 22px; font-family: var(--font-mono); font-size: .88rem; color: var(--text-dim); }
.about__tech li::before { content: '▹'; position: absolute; left: 0; color: var(--accent-2); }
.about__card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px 28px; box-shadow: var(--shadow); position: relative; overflow: hidden;
}
.about__card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--grad);
}
.about__avatar {
  width: 90px; height: 90px; border-radius: 20px; display: grid; place-items: center;
  font-family: var(--font-disp); font-weight: 700; font-size: 2rem; color: #0a0b10;
  background: var(--grad); margin-bottom: 26px; box-shadow: 0 12px 30px -10px rgba(124,138,255,.6);
}
.about__stats { list-style: none; display: flex; flex-direction: column; gap: 18px; }
.about__stats li { display: flex; flex-direction: column; }
.about__stats .num { font-family: var(--font-disp); font-size: 2rem; font-weight: 700; line-height: 1; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.about__stats .label { font-size: .82rem; color: var(--text-faint); text-transform: uppercase; letter-spacing: .08em; margin-top: 4px; }

/* ---------- Projects ---------- */
.projects { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 22px; }
.projects .card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px 24px; display: flex; flex-direction: column; gap: 14px;
  transition: transform .25s ease, border-color .25s, box-shadow .25s, background .25s, opacity .6s ease;
  position: relative; overflow: hidden;
}
.card::after {
  content: ''; position: absolute; inset: 0; border-radius: var(--radius); padding: 1px;
  background: var(--grad); opacity: 0; transition: opacity .25s;
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none;
}
.projects .card:hover { transform: translate(-5px, -8px); background: var(--surface-2); box-shadow: var(--shadow); }
.projects .card:hover::after { opacity: 1; }
.card__top { display: flex; align-items: center; justify-content: space-between; }
.card__icon { font-size: 1.7rem; filter: drop-shadow(0 0 10px rgba(124,138,255,.4)); }
.card__icon--img { width: 40px; height: 40px; border-radius: 9px; object-fit: cover; image-rendering: auto; filter: drop-shadow(0 4px 10px rgba(0,0,0,.4)); }
.card__links { display: flex; gap: 14px; }
.card__links a { color: var(--text-faint); font-size: .85rem; transition: color .2s; }
.card__links a:hover { color: var(--accent); }
.card__title { font-family: var(--font-disp); font-size: 1.18rem; font-weight: 600; }
.card__desc { color: var(--text-dim); font-size: .94rem; flex: 1; }
.card__tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.card__tags span {
  font-family: var(--font-mono); font-size: .74rem; color: var(--text-dim);
  background: rgba(124,138,255,.08); border: 1px solid var(--border); padding: 3px 9px; border-radius: 20px;
}
.projects__more { text-align: center; margin-top: 46px; }
.projects__more p { color: var(--text-dim); margin-bottom: 18px; }

/* ---------- Skills ---------- */
.skills { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 16px; }
.skills .skill {
  background: var(--surface); border: 1px solid var(--border); border-radius: 14px;
  padding: 22px 20px; text-align: center;
  transition: transform .2s ease, border-color .2s, background .2s, opacity .6s ease;
}
.skills .skill:hover { transform: translate(-4px, -6px); border-color: var(--border-lit); background: var(--surface-2); }
.skill__icon { font-size: 1.9rem; margin-bottom: 10px; }
.skill__icon--img { display: block; width: 44px; height: 44px; margin: 0 auto 12px; object-fit: contain; transition: transform .2s ease; }
.skills .skill:hover .skill__icon--img { transform: scale(1.08); }
.skill__name { font-family: var(--font-disp); font-weight: 600; font-size: 1rem; }
.skill__note { font-size: .8rem; color: var(--text-faint); margin-top: 3px; }

/* ---------- Contact ---------- */
.section--contact { text-align: center; padding-top: 60px; padding-bottom: 60px; }
.contact { max-width: 640px; margin: 0 auto; }
.contact .section__num { display: block; margin-bottom: 14px; }
.contact__title { font-family: var(--font-disp); font-size: clamp(2.2rem, 7vw, 3.4rem); font-weight: 700; letter-spacing: -.02em; }
.contact__lead { color: var(--text-dim); font-size: 1.08rem; margin: 22px auto 38px; }
.contact__links { display: flex; flex-wrap: wrap; justify-content: center; gap: 26px; margin-top: 40px; }
.contact__links a { color: var(--text-dim); font-family: var(--font-mono); font-size: .9rem; position: relative; transition: color .2s; }
.contact__links a:hover { color: var(--accent); }

/* ---------- Footer ---------- */
.footer { text-align: center; padding: 40px 20px; border-top: 1px solid var(--border); color: var(--text-dim); }
.footer__sub { font-size: .82rem; color: var(--text-faint); margin-top: 6px; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  .about { grid-template-columns: 1fr; }
  .nav__links, .nav__cta { display: none; }
  .nav__burger { display: flex; }
  .nav.open .nav__links {
    display: flex; flex-direction: column; gap: 22px;
    position: absolute; top: 100%; left: 0; right: 0;
    background: rgba(10,11,16,.96); backdrop-filter: blur(14px);
    padding: 28px clamp(20px,5vw,60px); border-bottom: 1px solid var(--border);
  }
  .nav.open .nav__cta { display: inline-block; position: absolute; top: calc(100% + 200px); }
}
@media (max-width: 480px) {
  .about__tech { grid-template-columns: 1fr; }
  .hero__socials { flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}