/* ===== Design tokens ===== */
:root {
  --bg: #0a0e1a;
  --bg-soft: #111726;
  --bg-card: #141b2d;
  --border: #233048;
  --text: #e6edf7;
  --text-muted: #8a98b3;
  --accent: #6366f1;       /* indigo */
  --accent-2: #22d3ee;     /* cyan   */
  --accent-3: #a855f7;     /* purple */
  --accent-soft: rgba(99, 102, 241, 0.12);
  --shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.6);
  --radius: 16px;
  --maxw: 1080px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  position: relative;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: 110px 0; position: relative; z-index: 1; }

/* ===== Scroll progress bar ===== */
.progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0%;
  z-index: 200;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent-3));
  box-shadow: 0 0 12px var(--accent-2);
  transition: width 0.08s linear;
}

/* ===== Animated aurora background ===== */
.aurora {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}
.aurora__blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
  will-change: transform;
}
.aurora__blob--1 {
  width: 520px; height: 520px;
  top: -120px; left: -80px;
  background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
  animation: drift1 18s ease-in-out infinite;
}
.aurora__blob--2 {
  width: 460px; height: 460px;
  top: 30%; right: -120px;
  background: radial-gradient(circle, var(--accent-2) 0%, transparent 70%);
  animation: drift2 22s ease-in-out infinite;
}
.aurora__blob--3 {
  width: 480px; height: 480px;
  bottom: -140px; left: 30%;
  background: radial-gradient(circle, var(--accent-3) 0%, transparent 70%);
  animation: drift3 26s ease-in-out infinite;
}
@keyframes drift1 { 50% { transform: translate(120px, 80px) scale(1.15); } }
@keyframes drift2 { 50% { transform: translate(-100px, 60px) scale(1.1); } }
@keyframes drift3 { 50% { transform: translate(80px, -90px) scale(1.2); } }

/* ===== Cursor spotlight ===== */
.spotlight {
  position: fixed;
  top: 0; left: 0;
  width: 420px; height: 420px;
  margin: -210px 0 0 -210px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(99,102,241,0.10) 0%, transparent 65%);
  pointer-events: none;
  z-index: 1;
  transform: translate3d(-9999px, -9999px, 0);
  transition: opacity 0.3s;
}

/* ===== Headings shared ===== */
.section__title {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 48px;
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.section__num {
  color: var(--accent-2);
  font-size: 1.1rem;
  font-weight: 500;
  font-family: "Space Grotesk", sans-serif;
}

/* ===== Gradient animated text ===== */
.gradient-text {
  background: linear-gradient(100deg, var(--accent), var(--accent-2), var(--accent-3), var(--accent));
  background-size: 300% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 6s linear infinite;
}
@keyframes shimmer { to { background-position: 300% 0; } }

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.98rem;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s;
  will-change: transform;
}
.btn--primary {
  position: relative;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #06121a;
  box-shadow: 0 10px 30px -10px var(--accent);
  overflow: hidden;
}
/* Sheen sweep on hover */
.btn--primary::after {
  content: "";
  position: absolute;
  top: 0; left: -120%;
  width: 70%; height: 100%;
  background: linear-gradient(120deg, transparent, rgba(255,255,255,0.45), transparent);
  transform: skewX(-20deg);
  transition: left 0.6s var(--ease);
}
.btn--primary:hover::after { left: 140%; }
.btn--primary:hover { transform: translateY(-3px); box-shadow: 0 18px 40px -12px var(--accent); }
.btn--ghost { border: 1px solid var(--border); color: var(--text); }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent-2); transform: translateY(-3px); }

/* ===== Navbar ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background 0.3s, border-color 0.3s, box-shadow 0.3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(10, 14, 26, 0.8);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--border);
  box-shadow: 0 8px 30px -20px #000;
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.nav__brand { font-family: "Space Grotesk", sans-serif; font-weight: 700; font-size: 1.4rem; }
.nav__brand span { color: var(--accent-2); }
.nav__links { display: flex; align-items: center; gap: 32px; }
.nav__links a { position: relative; color: var(--text-muted); font-size: 0.95rem; font-weight: 500; transition: color 0.2s; }
.nav__links a:not(.nav__cta)::after {
  content: "";
  position: absolute;
  left: 0; bottom: -6px;
  width: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 2px;
  transition: width 0.25s var(--ease);
}
.nav__links a:not(.nav__cta):hover::after { width: 100%; }
.nav__links a:hover { color: var(--text); }
.nav__cta {
  border: 1px solid var(--accent) !important;
  color: var(--accent-2) !important;
  padding: 8px 18px;
  border-radius: 10px;
}
.nav__cta:hover { background: var(--accent-soft); }

.nav__toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 6px; }
.nav__toggle span { width: 26px; height: 2px; background: var(--text); border-radius: 2px; transition: transform 0.3s, opacity 0.3s; }
.nav__toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.open span:nth-child(2) { opacity: 0; }
.nav__toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero ===== */
.hero { min-height: 100vh; display: flex; align-items: center; padding-top: 72px; }
.hero__inner { position: relative; z-index: 2; max-width: 760px; }
.hero__eyebrow { color: var(--accent-2); font-family: "Space Grotesk", sans-serif; font-weight: 500; margin-bottom: 18px; }
.hero__title {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(3rem, 9vw, 5.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.hero__subtitle {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(1.6rem, 6vw, 3.2rem);
  font-weight: 600;
  color: var(--text-muted);
  line-height: 1.1;
  margin-bottom: 26px;
  min-height: 1.2em;
}
.typed { color: var(--text); }
.caret {
  display: inline-block;
  color: var(--accent-2);
  font-weight: 400;
  animation: blink 1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
.hero__badges { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 26px; }
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.85rem; font-weight: 600;
  color: var(--text);
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(20, 27, 45, 0.6);
  transition: transform 0.2s var(--ease), border-color 0.2s;
}
.badge:hover { transform: translateY(-2px); border-color: var(--accent); }
.hero__text strong { color: var(--text); font-weight: 600; }
.hero__text { color: var(--text-muted); font-size: 1.08rem; max-width: 540px; margin-bottom: 36px; }
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 34px; }

/* ===== Social icons ===== */
.hero__socials { display: flex; gap: 14px; }
.social {
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text-muted);
  background: rgba(20, 27, 45, 0.5);
  transition: transform 0.25s var(--ease), color 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.social:hover {
  transform: translateY(-4px) rotate(-4deg);
  color: var(--accent-2);
  border-color: var(--accent);
  box-shadow: 0 12px 24px -12px var(--accent);
}

/* ===== About ===== */
.about__grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 48px; align-items: start; }
.about__text p { color: var(--text-muted); margin-bottom: 16px; }
.about__list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px 16px;
  margin-top: 18px;
}
.about__list li { position: relative; padding-left: 22px; color: var(--text-muted); font-size: 0.95rem; }
.about__list li::before { content: "▹"; position: absolute; left: 0; color: var(--accent-2); }

/* Stats counters */
.stats { display: flex; gap: 32px; margin-top: 32px; flex-wrap: wrap; }
.stat { display: flex; flex-direction: column; }
.stat__num {
  font-family: "Space Grotesk", sans-serif;
  font-size: 2rem; font-weight: 700;
  background: linear-gradient(135deg, var(--accent-2), var(--accent-3));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat__label { color: var(--text-muted); font-size: 0.85rem; }

.about__card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  box-shadow: var(--shadow);
}
.about__avatar {
  width: 96px; height: 96px;
  margin: 0 auto 18px;
  border-radius: 50%;
  display: grid; place-items: center;
  font-family: "Space Grotesk", sans-serif;
  font-size: 2.4rem; font-weight: 700;
  color: #06121a;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  animation: float 5s ease-in-out infinite;
}
@keyframes float { 50% { transform: translateY(-10px); } }
.about__name { font-weight: 700; font-size: 1.2rem; }
.about__role { color: var(--text-muted); font-size: 0.92rem; }
.about__college {
  margin-top: 12px;
  display: inline-block;
  font-size: 0.82rem; font-weight: 600;
  color: var(--accent-2);
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
}

/* ===== Skills ===== */
.skills__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.skill {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.skill:hover { border-color: var(--accent); box-shadow: var(--shadow); }
.skill__icon { font-size: 1.8rem; margin-bottom: 14px; display: inline-block; transition: transform 0.3s var(--ease); }
.skill:hover .skill__icon { transform: scale(1.25) rotate(-8deg); }
.skill h3 { font-family: "Space Grotesk", sans-serif; font-size: 1.1rem; margin-bottom: 10px; }
.skill p { color: var(--text-muted); font-size: 0.92rem; }

/* ===== Projects ===== */
.projects__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.project {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 26px;
  display: flex; flex-direction: column;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.project:hover { border-color: var(--accent); box-shadow: var(--shadow); }
.project__top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.project__folder { font-size: 1.8rem; }
.project__links a { color: var(--text-muted); font-size: 1.3rem; transition: color 0.2s, transform 0.2s; display: inline-block; }
.project__links a:hover { color: var(--accent-2); transform: translate(2px, -2px); }
.project__title { font-family: "Space Grotesk", sans-serif; font-size: 1.25rem; margin-bottom: 10px; }
.project__desc { color: var(--text-muted); font-size: 0.94rem; flex: 1; margin-bottom: 18px; }
.project__tags { display: flex; flex-wrap: wrap; gap: 8px; }
.project__tags li { font-size: 0.78rem; color: var(--accent-2); background: var(--accent-soft); padding: 4px 10px; border-radius: 20px; }

.projects__empty {
  color: var(--text-muted);
  font-size: 1.05rem;
  text-align: center;
  padding: 48px 24px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  background: rgba(20, 27, 45, 0.4);
}

/* 3D tilt helper — JS sets --rx / --ry */
.tilt {
  transform: perspective(800px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)) translateY(var(--ty, 0));
  transition: transform 0.2s var(--ease), border-color 0.3s, box-shadow 0.3s;
  transform-style: preserve-3d;
}

/* ===== Contact ===== */
.section--contact { text-align: center; }
.contact__inner { max-width: 600px; margin: 0 auto; }
.contact__eyebrow { color: var(--accent-2); font-family: "Space Grotesk", sans-serif; margin-bottom: 14px; }
.contact__title { font-family: "Space Grotesk", sans-serif; font-size: clamp(2rem, 6vw, 3rem); font-weight: 700; margin-bottom: 18px; }
.contact__text { color: var(--text-muted); margin-bottom: 36px; }
.contact__email { margin-top: 22px; font-family: "Space Grotesk", sans-serif; font-size: 1.02rem; }
.contact__email a { color: var(--accent-2); border-bottom: 1px solid transparent; transition: border-color 0.2s; }
.contact__email a:hover { border-bottom-color: var(--accent-2); }

/* ===== Footer ===== */
.footer { border-top: 1px solid var(--border); padding: 28px 0; position: relative; z-index: 1; }
.footer__inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.footer p { color: var(--text-muted); font-size: 0.88rem; }
.footer__socials { display: flex; gap: 22px; }
.footer__socials a { display: inline-flex; align-items: center; gap: 7px; color: var(--text-muted); font-size: 0.88rem; transition: color 0.2s, transform 0.2s; }
.footer__socials a:hover { color: var(--accent-2); transform: translateY(-2px); }

/* ===== Reveal animation ===== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.visible { opacity: 1; transform: none; }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .about__grid { grid-template-columns: 1fr; }
  .about__card { max-width: 280px; }
  .skills__grid { grid-template-columns: repeat(2, 1fr); }
  .projects__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 680px) {
  .container { padding: 0 20px; }
  .section { padding: 72px 0; }

  /* Spotlight + heavy blur are scroll-jank sources on phones — disable */
  .spotlight { display: none; }
  .aurora__blob { filter: blur(60px); opacity: 0.4; animation: none; }
  .nav.scrolled { backdrop-filter: none; background: rgba(10, 14, 26, 0.96); }

  .nav__inner { height: 64px; }
  .nav__toggle { display: flex; z-index: 110; }
  .nav__links {
    position: fixed;
    inset: 0 0 0 auto;
    width: min(78vw, 320px);
    flex-direction: column;
    justify-content: center;
    gap: 28px;
    background: var(--bg-soft);
    border-left: 1px solid var(--border);
    transform: translateX(100%);
    transition: transform 0.3s var(--ease);
    padding: 40px;
  }
  .nav__links.open { transform: translateX(0); }
  .nav__links a { font-size: 1.1rem; }

  .hero { min-height: auto; padding-top: 116px; padding-bottom: 60px; }
  .hero__title { font-size: clamp(3.2rem, 18vw, 4.5rem); }
  .hero__subtitle { font-size: clamp(1.5rem, 8vw, 2.2rem); }
  .hero__text { font-size: 1rem; }
  .hero__badges { gap: 8px; }
  .badge { font-size: 0.8rem; padding: 6px 12px; }
  .projects__grid, .skills__grid, .about__list { grid-template-columns: 1fr; }
  .skills__grid, .projects__grid { gap: 14px; }
  .skill, .project { padding: 24px 22px; }
  .about__card { max-width: 100%; }
  .about__grid { gap: 36px; }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .btn { text-align: center; padding: 15px 24px; font-size: 1rem; }
  /* Stats span the full width evenly on mobile */
  .stats { gap: 0; justify-content: space-between; text-align: center; }
  .stat { flex: 1; }
  .stat__num { font-size: 1.7rem; }
  /* Social row centered and roomy */
  .hero__socials { gap: 12px; }
  .social { width: 50px; height: 50px; }
  .footer__inner { flex-direction: column; text-align: center; gap: 20px; }
  .footer__socials { flex-wrap: wrap; justify-content: center; gap: 18px 22px; }

  /* Bigger tap targets for thumbs */
  .nav__links a, .footer__socials a { padding-block: 8px; }
  /* Disable tilt on touch */
  .tilt { transform: none !important; }
}

/* Very small phones */
@media (max-width: 380px) {
  .hero__title { font-size: 2.9rem; }
  .section__title { font-size: 1.45rem; }
  .hero__socials { gap: 10px; }
  .stat__num { font-size: 1.45rem; }
  .stat__label { font-size: 0.78rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .aurora__blob, .about__avatar, .gradient-text, .caret { animation: none !important; }
  .spotlight { display: none; }
}