:root {
  --bg: #0b101d;
  --bg-alt: #121a2c;
  --accent: #4f8cff;
  --accent-soft: rgba(79, 140, 255, 0.12);
  --text: #f4f6fb;
  --muted: #9aa5c0;
  --card-bg: rgba(14, 20, 35, 0.85);
  --border: rgba(255, 255, 255, 0.08);
  --shadow: 0 20px 60px rgba(7, 11, 21, 0.35);
  --radius: 18px;
  --max-width: 1180px;
  font-size: 16px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Outfit", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  background: radial-gradient(circle at top right, #101a33, #05070f 55%);
  color: var(--text);
  line-height: 1.6;
  scroll-behavior: smooth;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}

a:hover,
a:focus {
  color: var(--accent);
}

.container {
  width: min(92%, var(--max-width));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  background: rgba(5, 8, 16, 0.72);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 0;
}

.logo {
  font-weight: 600;
  letter-spacing: 0.02em;
  font-size: 1.05rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.site-nav a {
  color: var(--muted);
  font-size: 0.95rem;
}

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

.site-nav .nav-cta {
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.3rem;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text);
  display: block;
}

.hero {
  padding: 8rem 0 5rem;
}

.hero-grid {
  display: grid;
  gap: 2.8rem;
  grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr);
  align-items: start;
}

.hero-copy h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  margin: 0.6rem 0 1.2rem;
  font-weight: 500;
}

.eyebrow {
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin: 0;
}

.lead {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 45ch;
}

.cta-group {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 2.2rem 0 1.8rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.25rem;
  border-radius: 999px;
  font-weight: 500;
  font-size: 0.95rem;
}

.btn.primary {
  background: linear-gradient(120deg, var(--accent), #70a5ff);
  color: #fff;
}

.btn.primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.btn.secondary {
  border: 1px solid var(--border);
  color: var(--text);
  background: transparent;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.hero-meta a {
  color: inherit;
  border-bottom: 1px dashed transparent;
}

.hero-meta a:hover {
  border-bottom-color: var(--accent);
}

.hero-card {
  position: relative;
}

.hero-card::before {
  content: "";
  position: absolute;
  inset: -40px;
  background: radial-gradient(circle at top, rgba(79, 140, 255, 0.18), transparent 60%);
  filter: blur(10px);
  z-index: -1;
}

.hero-card-inner {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.2rem;
  box-shadow: var(--shadow);
}

.hero-card h2 {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--muted);
  margin-top: 0;
}

.hero-card ul {
  list-style: none;
  padding: 0;
  margin: 1rem 0 2rem;
  display: grid;
  gap: 0.8rem;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag-list li {
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.82rem;
  border: 1px solid rgba(79, 140, 255, 0.35);
}

.section {
  padding: 5rem 0;
}

.section.accent {
  background: rgba(7, 11, 21, 0.66);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 3rem;
}

.section-heading h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
}

.section-heading p {
  margin: 0;
  color: var(--muted);
  font-size: 1.02rem;
}

.timeline {
  display: grid;
  gap: 2rem;
  border-left: 1px solid var(--border);
  padding-left: 2.5rem;
}

.timeline-item {
  position: relative;
  background: rgba(10, 15, 26, 0.7);
  border-radius: var(--radius);
  padding: 1.8rem 2rem;
  border: 1px solid var(--border);
}

.timeline-item::before {
  content: "";
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid rgba(79, 140, 255, 0.35);
  left: -32px;
  top: 28px;
}

.timeline-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.95rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.timeline-role {
  color: var(--text);
}

.timeline-body {
  margin-top: 1.4rem;
}

.timeline-body .summary {
  margin: 0 0 1rem;
  color: var(--text);
  font-weight: 500;
}

.timeline-body ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
}

.timeline-body .links {
  margin-top: 1.4rem;
}

.timeline-body .links a {
  color: var(--accent);
  font-weight: 500;
}

.grid.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.8rem;
}

.card {
  background: rgba(6, 9, 17, 0.9);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 1.8rem;
  display: grid;
  gap: 0.9rem;
  position: relative;
  overflow: hidden;
}

.card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(79, 140, 255, 0.08), transparent 60%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.card:hover::after {
  opacity: 1;
}

.card h3 {
  margin: 0;
}

.card-meta {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  color: var(--muted);
}

.card ul {
  margin: 0;
  padding-left: 1rem;
  color: var(--muted);
}

.card-link {
  color: var(--accent);
  font-weight: 500;
}

.open-source-card {
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 6px);
  padding: 2.4rem;
  background: linear-gradient(135deg, rgba(79, 140, 255, 0.14), rgba(7, 11, 21, 0.85));
  box-shadow: var(--shadow);
  display: grid;
  gap: 1rem;
}

.open-source-card .links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem;
}

.open-source-card ul {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--text);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.skill-column {
  background: rgba(6, 9, 17, 0.8);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 1.5rem;
}

.skill-column h3 {
  margin-top: 0;
}

.skill-column ul {
  list-style: none;
  padding: 0;
  margin: 1.1rem 0 0;
  display: grid;
  gap: 0.7rem;
  color: var(--muted);
}

.education-grid {
  display: grid;
  gap: 1.8rem;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.edu-card {
  padding: 1.9rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: rgba(7, 11, 21, 0.78);
  display: grid;
  gap: 0.7rem;
}

.edu-card ul {
  padding-left: 1.2rem;
  margin: 0;
  color: var(--muted);
}

.contact {
  padding-bottom: 6rem;
}

.contact-grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: center;
}

.contact-card {
  border-radius: calc(var(--radius) + 10px);
  padding: 2rem;
  border: 1px solid var(--border);
  background: rgba(12, 18, 30, 0.85);
  display: grid;
  gap: 1rem;
}

.contact-item {
  display: grid;
  gap: 0.15rem;
  background: rgba(79, 140, 255, 0.08);
  padding: 0.9rem 1.1rem;
  border-radius: 12px;
  border: 1px solid rgba(79, 140, 255, 0.18);
  color: var(--text);
}

.contact-item:hover {
  transform: translateY(-2px);
  background: rgba(79, 140, 255, 0.12);
}

.contact-item .label {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.contact-item .value {
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 2.4rem 0;
  background: rgba(5, 8, 16, 0.82);
}

.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer a {
  color: var(--accent);
}

@media (max-width: 960px) {
  .hero {
    padding-top: 6.5rem;
  }

  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-card::before {
    inset: -28px;
  }
}

@media (max-width: 820px) {
  .site-nav {
    position: fixed;
    inset: 70px 0 auto 0;
    margin: 0 auto;
    width: min(92%, 420px);
    background: rgba(8, 12, 22, 0.98);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    padding: 1.2rem;
    gap: 0.9rem;
    box-shadow: var(--shadow);
    transform: translateY(-20px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s ease;
  }

  .site-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .site-nav .nav-cta {
    width: 100%;
    justify-content: center;
  }

  .nav-toggle {
    display: flex;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  .hero {
    padding-top: 6rem;
  }

  .timeline {
    border-left: none;
    padding-left: 0;
  }

  .timeline-item {
    padding: 1.6rem;
  }

  .timeline-item::before {
    display: none;
  }
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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