:root {
  --bg: #05060a;
  --card: #0e111a;
  --muted: #0b0d14;
  --accent: #7cf7ff;
  --accent-strong: #55c1ff;
  --text: #f2f5ff;
  --text-muted: #a9b1d6;
  --border: rgba(255, 255, 255, 0.08);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

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

body {
  margin: 0;
  font-family: "Space Grotesk", system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

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

.container {
  width: min(1200px, 90vw);
  margin: 0 auto;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.3em;
  font-size: 0.75rem;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(5, 6, 10, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 80px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: var(--accent);
  display: grid;
  place-items: center;
  font-weight: 700;
  color: #04121c;
}

.brand-name {
  font-weight: 600;
  margin: 0;
}

.brand-role {
  margin: 0;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.site-nav {
  display: flex;
  gap: 1.5rem;
  font-size: 0.95rem;
}

.site-nav a {
  color: var(--text-muted);
  transition: color 0.2s ease, transform 0.2s ease;
}

.site-nav a:hover {
  color: var(--accent);
  transform: translateY(-2px);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  width: 26px;
  height: 2px;
  background: var(--text);
  display: block;
}

.hero {
  padding: 120px 0 80px;
}

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

.hero h1 {
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  line-height: 1.15;
  margin: 0 0 1rem;
}

.lede {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}

.btn {
  border-radius: 999px;
  padding: 0.85rem 1.8rem;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  text-align: center;
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #04121c;
  box-shadow: 0 15px 40px rgba(126, 245, 255, 0.2);
}

.btn.ghost {
  border-color: var(--border);
}

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

.hero-stats {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.stat-value {
  font-size: 2rem;
  margin: 0;
}

.stat-label {
  margin: 0;
  color: var(--text-muted);
}

.hero-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 2rem;
  box-shadow: var(--shadow);
}

.hero-card h2 {
  margin-top: 0;
}

.hero-card ul {
  padding-left: 1.1rem;
  color: var(--text-muted);
}

.hero-card li {
  margin-bottom: 0.5rem;
}

.contact-mini {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  color: var(--accent);
  font-weight: 500;
}

.section {
  padding: 90px 0;
}

.section.muted {
  background: var(--muted);
}

.section-heading {
  margin-bottom: 2.5rem;
}

.section-heading h2 {
  margin: 0 0 0.5rem;
  font-size: clamp(2rem, 3vw, 2.5rem);
}

.section-heading p {
  margin: 0;
  color: var(--text-muted);
  max-width: 600px;
}

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

.experience-card,
.project-card,
.skill-card,
.contact-card {
  background: var(--card);
  border-radius: 18px;
  border: 1px solid var(--border);
  padding: 1.8rem;
  box-shadow: var(--shadow);
}

.experience-card header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: baseline;
  margin-bottom: 1rem;
}

.experience-card h3 {
  margin: 0;
}

.experience-card p {
  margin: 0;
  color: var(--text-muted);
}

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

.project-card h3,
.skill-card h3 {
  margin-top: 0;
}

.project-card .meta,
.education-grid .meta {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 0.8rem;
}

.skill-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 2rem;
}

.skill-tabs button {
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  padding: 0.6rem 1.4rem;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.skill-tabs button.active {
  background: var(--accent);
  color: #04121c;
  border-color: transparent;
}

.skill-card {
  min-height: 180px;
}

.education-grid article {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1.8rem;
  background: var(--card);
  box-shadow: var(--shadow);
}

.award-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.award-list li {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.9rem 1.4rem;
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-muted);
}

.contact {
  background: radial-gradient(circle at top right, rgba(124, 247, 255, 0.15), transparent);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  align-items: center;
}

.contact-card {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-card .label {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.2rem;
}

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

.site-footer {
  border-top: 1px solid var(--border);
  padding: 30px 0;
  background: #04050a;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .site-nav {
    position: fixed;
    inset: 0;
    top: 70px;
    background: rgba(5, 6, 10, 0.95);
    flex-direction: column;
    padding: 2rem;
    transform: translateX(100%);
    transition: transform 0.3s ease;
  }

  .site-nav.open {
    transform: translateX(0);
  }

  .nav-toggle {
    display: flex;
  }

  .hero {
    padding-top: 90px;
  }

  .hero-ctas {
    flex-direction: column;
  }
}