:root {
  --bg: #07111f;
  --bg-soft: #0d1b2f;
  --card: rgba(255, 255, 255, 0.075);
  --card-border: rgba(255, 255, 255, 0.14);
  --text: #eef4ff;
  --muted: #a8b7ca;
  --accent: #38bdf8;
  --accent-2: #60a5fa;
  --success: #22c55e;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  --radius: 22px;
  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, 0.25), transparent 32rem),
    radial-gradient(circle at top right, rgba(96, 165, 250, 0.18), transparent 28rem),
    var(--bg);
  line-height: 1.6;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, black, transparent 80%);
}

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

ul {
  padding-left: 1.25rem;
}

.container {
  width: min(100% - 32px, var(--max-width));
  margin: 0 auto;
}

.section {
  padding: 96px 0;
  position: relative;
}

.section.alt {
  background: rgba(255,255,255,0.035);
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(18px);
  background: rgba(7, 17, 31, 0.72);
  border-bottom: 1px solid rgba(255,255,255,0.09);
}

.nav {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #03111f;
  box-shadow: 0 10px 30px rgba(56, 189, 248, 0.22);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 0.95rem;
  color: var(--muted);
}

.nav-links a:hover {
  color: var(--text);
}

.nav-cta {
  color: var(--text) !important;
  border: 1px solid var(--card-border);
  padding: 9px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,0.07);
}

.nav-toggle {
  display: none;
  border: 0;
  color: var(--text);
  background: transparent;
  font-size: 1.65rem;
}

.hero {
  min-height: calc(100vh - 74px);
  display: flex;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 48px;
  align-items: center;
}

.eyebrow {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.78rem;
  font-weight: 800;
  margin: 0 0 14px;
}

h1, h2, h3, p {
  margin-top: 0;
}

h1 {
  font-size: clamp(3.2rem, 8vw, 6.8rem);
  line-height: 0.92;
  letter-spacing: -0.08em;
  margin-bottom: 18px;
}

.hero h2 {
  font-size: clamp(1.45rem, 3vw, 2.25rem);
  color: var(--muted);
  font-weight: 600;
  margin-bottom: 22px;
}

.hero-text {
  font-size: 1.12rem;
  color: var(--muted);
  max-width: 680px;
}

.hero-actions, .contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

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

.btn.primary {
  color: #03111f;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 16px 36px rgba(56, 189, 248, 0.24);
}

.btn.secondary {
  border: 1px solid var(--card-border);
  background: rgba(255,255,255,0.07);
}

.quick-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 42px;
  max-width: 650px;
}

.quick-stats div,
.profile-card,
.skill-card,
.project-card,
.contact-card,
.cert-item,
.timeline-content {
  border: 1px solid var(--card-border);
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
}

.quick-stats div {
  border-radius: 18px;
  padding: 18px;
}

.quick-stats strong {
  display: block;
  font-size: 1.5rem;
}

.quick-stats span {
  color: var(--muted);
  font-size: 0.88rem;
}

.profile-card {
  border-radius: var(--radius);
  padding: 34px;
  transform: rotate(1deg);
}

.profile-avatar {
  width: 76px;
  height: 76px;
  display: grid;
  place-items: center;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(56,189,248,0.95), rgba(96,165,250,0.9));
  color: #03111f;
  font-weight: 900;
  font-size: 1.5rem;
  margin-bottom: 24px;
}

.profile-card h3 {
  font-size: 1.4rem;
}

.profile-card li {
  color: var(--muted);
  margin-bottom: 10px;
}

.two-column {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 70px;
}

.section-heading h2 {
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -0.05em;
}

.section-heading.centered {
  max-width: 760px;
  margin: 0 auto 46px;
  text-align: center;
}

.section-body p {
  color: var(--muted);
  font-size: 1.05rem;
}

.skills-grid,
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.skill-card,
.project-card {
  border-radius: var(--radius);
  padding: 26px;
  min-height: 220px;
}

.skill-card h3,
.project-card h3 {
  margin-bottom: 12px;
}

.skill-card p,
.project-card p {
  color: var(--muted);
}

.timeline {
  margin-top: 36px;
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 18px;
}

.timeline-marker {
  width: 18px;
  height: 18px;
  margin-top: 22px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 8px rgba(56, 189, 248, 0.12);
}

.timeline-content {
  border-radius: var(--radius);
  padding: 30px;
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.timeline-header span,
.company,
.timeline-content li {
  color: var(--muted);
}

.company {
  font-weight: 700;
}

.timeline-content li {
  margin-bottom: 10px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.tags span {
  font-size: 0.78rem;
  font-weight: 700;
  color: #dff6ff;
  border: 1px solid rgba(56, 189, 248, 0.35);
  background: rgba(56, 189, 248, 0.09);
  border-radius: 999px;
  padding: 6px 10px;
}

.cert-list {
  display: grid;
  gap: 14px;
}

.cert-item {
  border-radius: 18px;
  padding: 18px 20px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.cert-item span {
  color: var(--success);
  font-weight: 700;
}

.contact-section {
  padding-top: 60px;
}

.contact-card {
  text-align: center;
  border-radius: 32px;
  padding: 56px 30px;
}

.contact-card p {
  color: var(--muted);
}

.contact-actions {
  justify-content: center;
}

.site-footer {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 28px 0;
  color: var(--muted);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

.footer-content a:hover {
  color: var(--text);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.75s ease, transform 0.75s ease;
}

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

.delay-1 { transition-delay: 0.12s; }
.delay-2 { transition-delay: 0.22s; }

@media (max-width: 920px) {
  .hero-grid,
  .two-column,
  .skills-grid,
  .project-grid {
    grid-template-columns: 1fr;
  }

  .profile-card {
    transform: none;
  }

  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 74px;
    left: 16px;
    right: 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    background: rgba(7, 17, 31, 0.96);
    border: 1px solid var(--card-border);
    border-radius: 18px;
    padding: 18px;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 8px 0;
  }

  .quick-stats {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .section {
    padding: 70px 0;
  }

  h1 {
    letter-spacing: -0.06em;
  }

  .timeline-item {
    grid-template-columns: 1fr;
  }

  .timeline-marker {
    display: none;
  }

  .cert-item {
    flex-direction: column;
  }
}