:root {
  --bg: #0b0f1a;
  --bg-soft: #0f1526;
  --surface: rgba(17, 24, 39, 0.72);
  --surface-strong: rgba(30, 41, 59, 0.85);
  --border: rgba(148, 163, 184, 0.2);
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #00e5ff;
  --accent-2: #7c3aed;
  --accent-3: #22d3ee;
  --glow: 0 0 30px rgba(0, 229, 255, 0.35);
  --nav-bg: rgba(8, 12, 24, 0.78);
  --nav-border: rgba(0, 229, 255, 0.18);
  --nav-glow: 0 0 24px rgba(0, 229, 255, 0.22);
  --nav-active: rgba(124, 58, 237, 0.28);
  --radius: 18px;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  --max-width: 1120px;
  --transition: 180ms ease;
  --anchor-offset: 96px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Space Grotesk", system-ui, sans-serif;
  background: radial-gradient(circle at top, rgba(124, 58, 237, 0.12), transparent 45%),
    radial-gradient(circle at 20% 20%, rgba(0, 229, 255, 0.18), transparent 35%),
    var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

.tech-bg {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.55;
  mix-blend-mode: screen;
}

.header,
main,
.footer {
  position: relative;
  z-index: 1;
}

a {
  color: inherit;
  text-decoration: none;
}

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

main {
  display: flex;
  flex-direction: column;
  gap: 96px;
  padding: 140px 24px 120px;
}

section {
  width: 100%;
  scroll-margin-top: var(--anchor-offset);
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(11, 15, 26, 0.75);
  backdrop-filter: blur(14px);
  z-index: 10;
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

.nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 1px;
  color: var(--accent);
  text-shadow: var(--glow);
}

.nav__list {
  list-style: none;
  display: flex;
  gap: 20px;
  align-items: center;
  flex-wrap: wrap;
  position: relative;
}

.nav__link {
  font-size: 14px;
  color: var(--muted);
  transition: color var(--transition);
  padding: 6px 8px;
  border-radius: 999px;
  position: relative;
  z-index: 1;
}

.nav__link::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(120deg, rgba(0, 229, 255, 0.22), rgba(124, 58, 237, 0.22));
  opacity: 0;
  transition: opacity var(--transition);
  z-index: -1;
}

.nav__link.active,
.nav__link:hover {
  color: var(--text);
}

.nav__link.active::before,
.nav__link:hover::before {
  opacity: 1;
}

.nav__indicator {
  position: absolute;
  top: 50%;
  left: 0;
  height: 28px;
  width: 0;
  border-radius: 999px;
  background: rgba(124, 58, 237, 0.2);
  transform: translate(var(--nav-indicator-x, 0px), -50%);
  transition: transform 260ms ease, width 260ms ease, opacity 200ms ease;
  z-index: 0;
  opacity: 0;
  pointer-events: none;
}

.nav__indicator.is-visible {
  opacity: 1;
}

.nav__link:focus-visible,
.nav__toggle:focus-visible,
.logo:focus-visible {
  outline: 2px solid rgba(0, 229, 255, 0.7);
  outline-offset: 2px;
}

.nav__toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 12px;
  padding: 8px 12px;
}

.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 48px;
  align-items: center;
}

.hero__eyebrow {
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--accent-3);
}

.hero__title {
  font-size: clamp(36px, 5vw, 64px);
  margin-top: 8px;
}

@media (min-width: 961px) {
  .hero__title {
    white-space: nowrap;
  }
}

.hero__role {
  font-size: clamp(20px, 2.2vw, 28px);
  color: var(--muted);
}

.hero__tagline {
  margin: 18px 0 28px;
  max-width: 540px;
}

.hero__cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero__meta {
  margin-top: 24px;
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 14px;
}

.hero__visual {
  position: relative;
  min-height: 320px;
  display: grid;
  place-items: center;
}

.orb {
  position: absolute;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  filter: blur(0.5px);
  opacity: 0.7;
  animation: float 6s ease-in-out infinite;
}

.orb--one {
  background: radial-gradient(circle, rgba(0, 229, 255, 0.7), transparent 65%);
  top: 0;
  left: 10%;
}

.orb--two {
  background: radial-gradient(circle, rgba(124, 58, 237, 0.65), transparent 60%);
  bottom: -10px;
  right: 10%;
  animation-delay: 1.5s;
}

 .glass-card {
   position: relative;
   z-index: 1;
   padding: 24px 28px 22px;
   border-radius: var(--radius);
   background: var(--surface);
   border: 1px solid var(--border);
   box-shadow: var(--shadow);
   backdrop-filter: blur(18px);
   text-align: center;
   max-width: 360px;
 }
 
 .glass-card::before {
   content: "";
   position: absolute;
   inset: 0;
   border-radius: inherit;
   padding: 1px;
   background: linear-gradient(120deg, rgba(0, 229, 255, 0.85), rgba(124, 58, 237, 0.85), rgba(34, 211, 238, 0.85));
   background-size: 220% 220%;
   animation: glass-border-flow 6s linear infinite;
   -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
   -webkit-mask-composite: xor;
   mask-composite: exclude;
   opacity: 0.9;
   pointer-events: none;
 }
 
 .glass-card__media {
   position: relative;
   width: 100%;
   margin: 0 auto 16px;
   border-radius: 18px;
   overflow: hidden;
   border: 1px solid rgba(148, 163, 184, 0.25);
   box-shadow: 0 18px 40px rgba(0, 0, 0, 0.3);
 }

 .hero__tech-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.8;
  pointer-events: none;
  mix-blend-mode: screen;
  z-index: 1;
}
 
.glass-card__photo {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  position: relative;
  z-index: 0;
}
@media (prefers-reduced-motion: reduce) {
   .hero__tech-canvas {
     opacity: 0.35;
   }
 }
 
 .glass-card__title {
   font-weight: 600;
   margin-bottom: 8px;
   color: var(--accent);
 }
.section__header {
  max-width: var(--max-width);
  margin: 0 auto 32px;
  padding: 0 24px;
}

.section__header h2 {
  font-size: clamp(28px, 3vw, 40px);
  margin-bottom: 8px;
}

.section__header p {
  color: var(--muted);
  max-width: 680px;
}

.about__grid,
.skills__grid,
.projects__grid,
.education__list,
.contact__grid {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.about__grid,
.education__list,
.contact__grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card {
  padding: 24px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.about__grid .card {
  position: relative;
  overflow: hidden;
  --mx: 50%;
  --my: 50%;
}

.about__grid .card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: radial-gradient(
      140px circle at var(--mx) var(--my),
      rgba(0, 229, 255, 0.85),
      rgba(124, 58, 237, 0.65) 45%,
      rgba(34, 211, 238, 0.55) 70%,
      rgba(34, 211, 238, 0) 100%
    );
  -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 180ms ease;
  pointer-events: none;
}

.about__grid .card:hover::before {
  opacity: 1;
}

.skills__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}



.skill-card {
  position: relative;
  min-height: 120px;
  padding: 18px 20px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(13, 20, 36, 0.92), rgba(16, 24, 42, 0.7));
  border: 1px solid rgba(148, 163, 184, 0.18);
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.25);
  overflow: hidden;
  transform-style: preserve-3d;
  transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
  --mx: 50%;
  --my: 50%;
}

.skill-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(130deg, rgba(0, 229, 255, 0.6), rgba(124, 58, 237, 0.5), rgba(34, 211, 238, 0.55));
  -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 220ms ease;
}

.skill-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(circle 120px at var(--mx) var(--my), rgba(0, 229, 255, 0.28), rgba(0, 229, 255, 0) 70%);
  opacity: 0;
  transform: translateZ(0) scale(1.02);
  transition: opacity 220ms ease, transform 220ms ease;
}

.skill-card__icon {
  font-size: 32px;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  color: var(--accent);
  background: rgba(8, 12, 24, 0.7);
  border: 1px solid rgba(148, 163, 184, 0.2);
  box-shadow: inset 0 0 18px rgba(0, 229, 255, 0.12);
}

.skill-card__icon svg {
  width: 26px;
  height: 26px;
  fill: currentColor;
}

.skill-card__label {
  font-weight: 600;
  font-size: 16px;
  letter-spacing: 0.2px;
}

.skill-card:hover {
  transform: translateY(-6px) rotateX(6deg) rotateY(-6deg);
  box-shadow: 0 28px 60px rgba(0, 229, 255, 0.18), 0 18px 40px rgba(0, 0, 0, 0.4);
  border-color: rgba(0, 229, 255, 0.45);
}

.skill-card:hover::before {
  opacity: 1;
}

.skill-card:hover::after {
  opacity: 1;
  transform: translateZ(0) scale(1.05);
}

.skill-card:hover .skill-card__icon {
  color: #0b0f1a;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.9), rgba(124, 58, 237, 0.9));
  box-shadow: 0 0 18px rgba(0, 229, 255, 0.5);
}

.timeline {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 32px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(var(--accent), transparent);
}

.timeline__item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 20px;
  padding: 16px 0 24px;
  position: relative;
}

.timeline__dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  margin-left: 25px;
  box-shadow: var(--glow);
}

.timeline__content {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 20px 24px;
  border: 1px solid var(--border);
}

.timeline__period {
  color: var(--muted);
  font-size: 14px;
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.project-card {
  padding: 24px;
  border-radius: var(--radius);
  background: var(--surface-strong);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.project-card__meta {
  color: var(--muted);
  font-size: 14px;
}

.project-card__link {
  color: var(--accent);
  font-weight: 500;
}

.contact__form {
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 6px;
  font-size: 14px;
  color: var(--muted);
}

input,
textarea {
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  color: var(--text);
  font: inherit;
}

input:focus,
textarea:focus {
  outline: 2px solid rgba(0, 229, 255, 0.5);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.btn--primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #030712;
  box-shadow: var(--glow);
}

.btn--primary:hover {
  transform: translateY(-2px);
}

.btn--ghost {
  border-color: var(--border);
  background: rgba(15, 23, 42, 0.4);
  color: var(--text);
}

.muted {
  color: var(--muted);
  font-size: 14px;
}

.contact__info {
  display: grid;
  gap: 16px;
  padding: 22px;
  border-radius: var(--radius);
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border);
}

.footer {
  padding: 32px 24px 48px;
  text-align: center;
  color: var(--muted);
}

.floating-actions {
  position: fixed;
  right: 24px;
  bottom: 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 9;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
}

.floating-actions.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top,
.back-to-contact {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 15, 28, 0.88);
  border: 1px solid rgba(0, 229, 255, 0.3);
  color: var(--accent);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.35), var(--nav-glow);
  transition: transform var(--transition), color var(--transition), border-color var(--transition);
}

.back-to-top:hover,
.back-to-contact:hover {
  color: var(--text);
  border-color: rgba(124, 58, 237, 0.6);
  transform: translateY(-2px);
}

.back-to-contact {
  color: var(--accent-2);
}

.reveal {
  opacity: 0;
  transform: translateY(18px) scale(0.98);
  transition: opacity 600ms ease, transform 600ms ease;
  will-change: opacity, transform;
}

.reveal--visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-14px);
  }
}

@keyframes glass-border-flow {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

@media (max-width: 960px) {
  .nav__list {
    display: none;
    position: absolute;
    top: 64px;
    right: 24px;
    flex-direction: column;
    gap: 10px;
    padding: 16px;
    border-radius: 16px;
    background: rgba(10, 15, 28, 0.95);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
  }

  .nav__indicator {
    display: none;
  }

  .nav__list.is-open {
    display: flex;
  }

  .nav__toggle {
    display: inline-flex;
  }
}

@media (max-width: 720px) {
  :root {
    --anchor-offset: 84px;
  }

  main {
    padding-top: 120px;
  }

  .timeline::before {
    left: 12px;
  }

  .timeline__item {
    grid-template-columns: 32px 1fr;
  }

  .timeline__dot {
    margin-left: 8px;
  }
}