:root {
  --bg: #0f172a;
  --bg-soft: rgba(15, 23, 42, 0.65);
  --surface: #111827;
  --card: rgba(15, 23, 42, 0.45);
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --radius-lg: 1.25rem;
}

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

body {
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #1f2937, #020617 45%);
  color: var(--text);
  line-height: 1.6;
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
  background: rgba(2, 6, 23, 0.6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 5vw;
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.08em;
}

nav {
  display: flex;
  gap: 1.25rem;
  align-items: center;
  font-size: 0.9rem;
}

nav a {
  color: var(--muted);
}

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

.btn-nav {
  background: var(--accent);
  color: #020617;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  font-weight: 600;
}

.hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  padding: 6rem 5vw 3rem;
  align-items: center;
}

.hero-text h1 {
  font-size: clamp(2.7rem, 5vw, 3.5rem);
  margin-bottom: 0.7rem;
}

.accent {
  color: var(--accent);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--muted);
  font-size: 0.7rem;
  margin-bottom: 1rem;
}

.subtitle {
  max-width: 38rem;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  gap: 1rem;
  margin: 1.8rem 0 1rem;
}

.btn-primary,
.btn-secondary {
  padding: 0.7rem 1.3rem;
  border-radius: 999px;
  font-weight: 600;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: #020617;
}

.btn-secondary {
  border-color: rgba(148, 163, 184, 0.5);
  color: var(--text);
}

.hero-links {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.85rem;
}

.hero-card {
  background: rgba(15, 23, 42, 0.35);
  border: 1px solid rgba(148, 163, 184, 0.1);
  border-radius: 1.2rem;
  padding: 1.5rem 1.4rem;
}

.hero-card-title {
  color: var(--muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: 0.7rem;
}

.hero-card ul {
  list-style: none;
  display: grid;
  gap: 0.5rem;
}

.section {
  padding: 4rem 5vw 0;
  max-width: 1100px;
  margin: 0 auto;
}

.section h2 {
  font-size: 1.7rem;
  margin-bottom: 1.2rem;
}

.about-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.bullets {
  list-style: disc;
  margin-left: 1.25rem;
  color: var(--muted);
}

.muted {
  color: var(--muted);
  font-size: 0.85rem;
}

.timeline {
  display: grid;
  gap: 1.4rem;
}

.timeline-item {
  background: rgba(15, 23, 42, 0.35);
  border: 1px solid rgba(148, 163, 184, 0.1);
  border-radius: 1rem;
  padding: 1.2rem 1.25rem 1.15rem;
}

.ti-header {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-bottom: 0.4rem;
}

.ti-header h3 {
  font-size: 1.1rem;
}

.ti-meta {
  color: var(--muted);
  font-size: 0.78rem;
}

.timeline-item ul {
  margin-left: 1rem;
  color: var(--muted);
  font-size: 0.86rem;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.3rem;
}

.project-card {
  background: rgba(15, 23, 42, 0.35);
  border: 1px solid rgba(148, 163, 184, 0.08);
  border-radius: 1rem;
  padding: 1.1rem 1.15rem 1.1rem;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.1rem;
}

.contact-section {
  padding-bottom: 4rem;
}

.contact-box {
  background: rgba(15, 23, 42, 0.35);
  border: 1px solid rgba(148, 163, 184, 0.1);
  border-radius: 1rem;
  padding: 1.2rem 1.1rem;
  max-width: 460px;
}

.footer {
  padding: 2.8rem 5vw 2.5rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.8rem;
}

@media (max-width: 880px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 5.5rem;
  }
  nav {
    gap: 0.8rem;
  }
  .topbar {
    flex-wrap: wrap;
    gap: 0.8rem;
  }
}