:root {
  --bg: #08111f;
  --bg-elev: #0e1a2d;
  --bg-soft: #12223a;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #f5f8ff;
  --text-soft: #b9c8e1;
  --primary: #5da9ff;
  --primary-2: #8fd0ff;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  --radius: 24px;
  --radius-sm: 16px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(93, 169, 255, 0.18), transparent 22%),
    radial-gradient(circle at top left, rgba(143, 208, 255, 0.08), transparent 24%),
    linear-gradient(180deg, #07101d 0%, #08111f 45%, #091423 100%);
  line-height: 1.6;
}

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

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

button {
  font: inherit;
}

.container {
  width: min(var(--max-width), calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(16px);
  background: rgba(8, 17, 31, 0.7);
  border-bottom: 1px solid var(--line);
}

.nav {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  font-weight: 700;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #07101d;
  font-weight: 900;
  box-shadow: var(--shadow);
}

.brand-text {
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.4rem;
}

.nav-links a {
  color: var(--text-soft);
  font-size: 0.96rem;
  transition: color 0.2s ease;
}

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

.nav-toggle {
  display: none;
  width: 48px;
  height: 48px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--text);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: var(--text);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.hero {
  padding: 5.5rem 0 3rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  gap: 2rem;
  align-items: center;
}

.eyebrow,
.section-kicker {
  display: inline-block;
  color: var(--primary-2);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 800;
  font-size: 0.78rem;
}

.hero h1 {
  margin: 0.7rem 0 1rem;
  font-size: clamp(2.6rem, 6vw, 5rem);
  line-height: 0.97;
  letter-spacing: -0.05em;
}

.hero h1 span {
  color: var(--primary-2);
}

.hero-text,
.section-heading p,
.card p,
.project-card p,
.contact-card p,
.timeline-content p {
  color: var(--text-soft);
}

.hero-actions,
.contact-actions {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.9rem 1.15rem;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
  font-weight: 700;
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #08111f;
  border-color: transparent;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
}

.hero-pills,
.tag-list,
.project-tags {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.hero-pills li,
.tag-list li,
.project-tags li {
  padding: 0.55rem 0.8rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  color: var(--text);
  font-size: 0.9rem;
}

.hero-card,
.card,
.project-card,
.contact-card,
.profile-card {
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.03));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.profile-card {
  padding: 1.2rem;
}

.profile-image-wrap {
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, #0d1a2f, #112542);
}

.profile-image {
  width: 100%;
  height: auto;
}

.profile-meta {
  padding: 1rem 0.25rem 0.1rem;
}

.profile-meta h2 {
  margin: 0 0 0.2rem;
  font-size: 1.5rem;
}

.profile-meta p {
  margin: 0;
  color: var(--text-soft);
}

.meta-grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.9rem;
}

.meta-grid div {
  padding: 0.9rem;
  border-radius: 16px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--line);
}

.meta-label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-soft);
  margin-bottom: 0.25rem;
}

.section {
  padding: 2.3rem 0;
}

.section-alt {
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border-top: 1px solid rgba(255,255,255,0.03);
  border-bottom: 1px solid rgba(255,255,255,0.03);
}

.section-heading {
  margin-bottom: 1.4rem;
}

.section-heading h2 {
  margin: 0.45rem 0 0.55rem;
  font-size: clamp(1.9rem, 4vw, 3rem);
  letter-spacing: -0.04em;
}

.about-grid,
.stack-grid,
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.card,
.project-card {
  padding: 1.3rem;
}

.card h3,
.project-card h3 {
  margin-top: 0;
  margin-bottom: 0.6rem;
  font-size: 1.15rem;
}

.timeline {
  position: relative;
  display: grid;
  gap: 1rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--primary), transparent);
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 1rem;
  align-items: start;
}

.timeline-dot {
  width: 24px;
  height: 24px;
  margin-top: 1rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  box-shadow: 0 0 0 6px rgba(93, 169, 255, 0.12);
}

.timeline-content {
  padding: 1.3rem;
}

.timeline-label,
.project-badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0.35rem 0.6rem;
  border-radius: 999px;
  background: rgba(93, 169, 255, 0.12);
  color: var(--primary-2);
  border: 1px solid rgba(93, 169, 255, 0.2);
  font-size: 0.82rem;
  font-weight: 700;
}

.project-badge.subtle {
  background: rgba(255,255,255,0.05);
  color: var(--text-soft);
  border-color: var(--line);
}

.project-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.project-link {
  color: var(--primary-2);
  font-weight: 700;
}

.featured {
  grid-column: span 2;
}

.repo-feed {
  margin-top: 1rem;
  display: grid;
  gap: 0.8rem;
}

.repo-item {
  padding: 0.9rem;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
}

.repo-item h4 {
  margin: 0 0 0.25rem;
  font-size: 1rem;
}

.repo-item p,
.repo-item small {
  margin: 0;
  color: var(--text-soft);
}

.contact-card {
  padding: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.site-footer {
  padding: 1.5rem 0 2.8rem;
}

.footer-inner {
  border-top: 1px solid var(--line);
  padding-top: 1.3rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--text-soft);
  flex-wrap: wrap;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

@media (max-width: 980px) {
  .hero-grid,
  .about-grid,
  .stack-grid,
  .projects-grid {
    grid-template-columns: 1fr;
  }

  .featured {
    grid-column: span 1;
  }
}

@media (max-width: 760px) {
  .nav-toggle {
    display: inline-block;
  }

  .nav {
    flex-wrap: wrap;
    padding: 0.8rem 0;
  }

  .nav-links {
    width: 100%;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    padding: 0.6rem 0 0.2rem;
    gap: 0.9rem;
  }

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

  .hero {
    padding-top: 4rem;
  }

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

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

  .timeline::before,
  .timeline-dot {
    display: none;
  }
}