:root {
  --bg: #070b14;
  --bg-elevated: rgba(15, 20, 34, 0.72);
  --surface: rgba(18, 24, 38, 0.72);
  --surface-strong: rgba(20, 26, 42, 0.9);
  --text: #f6f8ff;
  --muted: #9ea8c6;
  --line: rgba(255, 255, 255, 0.1);
  --accent: #7c8dff;
  --accent-2: #5bf1ff;
  --glow: rgba(124, 141, 255, 0.35);
  --shadow: 0 18px 55px rgba(4, 8, 20, 0.45);
  --radius: 24px;
  --transition: 260ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  margin: 0;
  font-family: "Inter", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(95, 105, 255, 0.16), transparent 28%),
    radial-gradient(circle at top right, rgba(91, 241, 255, 0.12), transparent 24%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

body.light {
  --bg: #f4f7fb;
  --bg-elevated: rgba(255, 255, 255, 0.72);
  --surface: rgba(255, 255, 255, 0.74);
  --surface-strong: rgba(251, 253, 255, 0.95);
  --text: #10213f;
  --muted: #5f6a85;
  --line: rgba(20, 29, 46, 0.1);
  --shadow: 0 18px 50px rgba(87, 99, 132, 0.15);
}

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

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

.page-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 18px 0 60px;
  position: relative;
  z-index: 1;
}

.ambient {
  position: fixed;
  pointer-events: none;
  border-radius: 50%;
  filter: blur(18px);
  opacity: 0.7;
  animation: drift 16s ease-in-out infinite alternate;
}

.ambient-1 {
  top: 6%;
  right: 8%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(124, 141, 255, 0.48), transparent 70%);
}

.ambient-2 {
  bottom: 8%;
  left: 6%;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(91, 241, 255, 0.32), transparent 70%);
  animation-duration: 18s;
}

.glass {
  background: var(--surface);
  border: 1px solid var(--line);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}

.site-header {
  position: sticky;
  top: 14px;
  z-index: 20;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 12px 16px;
  border-radius: 999px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.nav-links {
  display: flex;
  gap: 16px;
  color: var(--muted);
  font-size: 0.94rem;
}

.nav-links a {
  transition: color var(--transition), transform var(--transition);
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--text);
  transform: translateY(-1px);
}

.mode-toggle {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  border-radius: 999px;
  width: 42px;
  height: 42px;
  cursor: pointer;
  transition: transform var(--transition), background var(--transition), border-color var(--transition);
}

.mode-toggle:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.07);
}

main {
  display: grid;
  gap: 24px;
  padding-top: 24px;
}

.section,
.hero {
  position: relative;
}

.hero {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr;
  gap: 24px;
  align-items: stretch;
  padding: 56px 0 34px;
}

.hero-copy {
  padding: 38px 8px 14px 0;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent-2);
  font-size: 0.82rem;
  letter-spacing: 0.23em;
  text-transform: uppercase;
  font-weight: 700;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.04;
}

h1 {
  font-family: "Manrope", sans-serif;
  font-size: clamp(3rem, 5.7vw, 5.4rem);
  letter-spacing: -0.05em;
  max-width: 13ch;
}

h2 {
  font-family: "Manrope", sans-serif;
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  letter-spacing: -0.04em;
  max-width: 16ch;
}

h3 {
  font-size: 1.28rem;
}

.hero-text,
.project-card p,
.about-card p,
.contact-card p,
.chip-card small {
  color: var(--muted);
}

.hero-text {
  margin: 18px 0 28px;
  max-width: 62ch;
  font-size: 1.06rem;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-weight: 700;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, rgba(124, 141, 255, 0.92), rgba(91, 241, 255, 0.86));
  color: #05101d;
  box-shadow: 0 8px 30px rgba(124, 141, 255, 0.32);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.02);
}

.hero-panel,
.project-card,
.chip-card,
.cert-card,
.about-card,
.contact-card {
  border-radius: var(--radius);
}

.hero-panel {
  padding: 22px;
  display: grid;
  gap: 14px;
  align-content: start;
  position: relative;
  overflow: hidden;
}

.hero-panel::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.08), transparent 50%);
  pointer-events: none;
}

.panel-label {
  color: var(--muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
}

.hero-metric {
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 18px;
  padding: 16px;
}

.hero-metric strong {
  display: block;
  margin-bottom: 4px;
}

.hero-metric span {
  color: var(--muted);
}

.section-heading {
  margin-bottom: 20px;
}

.chips-grid,
.project-grid,
.cert-grid,
.about-grid {
  display: grid;
  gap: 16px;
}

.chips-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.chip-card {
  padding: 16px;
  min-height: 110px;
  display: grid;
  align-content: start;
  gap: 8px;
  transition: transform var(--transition), border-color var(--transition), background var(--transition);
}

.chip-card:hover,
.project-card:hover,
.cert-card:hover,
.about-card:hover,
.contact-card:hover {
  transform: translateY(-4px);
  border-color: rgba(91, 241, 255, 0.4);
}

.chip-card span {
  font-weight: 700;
}

.project-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.project-card,
.cert-card,
.about-card {
  padding: 18px;
  transition: transform var(--transition), border-color var(--transition), background var(--transition);
}

.project-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.project-badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(124, 141, 255, 0.14);
  border: 1px solid rgba(124, 141, 255, 0.3);
  font-size: 0.78rem;
  color: var(--accent-2);
}

.project-top a {
  color: var(--muted);
}

.cert-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.cert-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 16px;
  margin-top: 12px;
}

.about-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.contact-card {
  padding: 24px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 22px;
  align-items: center;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.contact-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 110px;
  padding: 12px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
  transition: transform var(--transition), background var(--transition), border-color var(--transition);
}

.contact-links a:hover {
  transform: translateY(-2px);
  border-color: rgba(91, 241, 255, 0.4);
  background: rgba(255, 255, 255, 0.05);
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 700ms ease, transform 700ms ease;
}

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

@keyframes drift {
  from {
    transform: translate3d(0, 0, 0) scale(1);
  }
  to {
    transform: translate3d(10px, -18px, 0) scale(1.07);
  }
}

@media (max-width: 960px) {
  .hero,
  .contact-card,
  .project-grid,
  .chips-grid,
  .cert-grid,
  .about-grid {
    grid-template-columns: 1fr;
  }

  .topbar {
    border-radius: 24px;
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .nav-links {
    order: 3;
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .contact-links {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100% - 20px, 1180px);
  }

  .hero-copy {
    padding-top: 20px;
  }

  .hero {
    padding-top: 32px;
  }

  h1 {
    max-width: none;
  }

  .topbar {
    padding: 14px;
  }
}

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

  .ambient,
  .reveal,
  .btn,
  .chip-card,
  .project-card,
  .cert-card,
  .about-card,
  .contact-links a,
  .nav-links a,
  .mode-toggle {
    animation: none !important;
    transition: none !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}