:root {
  color-scheme: light dark;
  --bg: #f6f7fb;
  --panel: #ffffff;
  --panel-light: rgba(255, 255, 255, 0.9);
  --text: #0b1020;
  --muted: #4b556b;
  --accent: #2f6bff;
  --accent-2: #7c3aed;
  --glow: rgba(47, 107, 255, 0.2);
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #07070f;
  --panel: #0f1220;
  --panel-light: rgba(20, 24, 44, 0.75);
  --text: #eef1ff;
  --muted: #a2a7c2;
  --accent: #6ef2ff;
  --accent-2: #9d75ff;
  --glow: rgba(110, 242, 255, 0.25);
}

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

body {
  font-family: "Space Grotesk", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  position: relative;
  overflow-x: hidden;
  transition: background 0.3s ease, color 0.3s ease;
}

a {
  color: inherit;
}

.background {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.grid {
  position: absolute;
  inset: -10% -10% auto;
  height: 70vh;
  background-image: linear-gradient(rgba(47, 107, 255, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(47, 107, 255, 0.12) 1px, transparent 1px);
  background-size: 60px 60px;
  transform: perspective(900px) rotateX(55deg);
  transform-origin: top;
  filter: blur(0.2px);
  opacity: 0.5;
}

.glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, rgba(124, 58, 237, 0.18), transparent 45%),
    radial-gradient(circle at 20% 20%, var(--glow), transparent 50%);
}

.orbit {
  position: absolute;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  border: 1px solid rgba(47, 107, 255, 0.2);
  top: 8%;
  right: -120px;
  box-shadow: 0 0 80px rgba(47, 107, 255, 0.2);
  animation: orbit 18s linear infinite;
}

.stars {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(47, 107, 255, 0.12) 1px, transparent 1px);
  background-size: 120px 120px;
  opacity: 0.35;
  animation: shimmer 12s ease-in-out infinite;
}

html[data-theme="dark"] .grid {
  background-image: linear-gradient(rgba(110, 242, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(110, 242, 255, 0.08) 1px, transparent 1px);
  opacity: 0.8;
}

html[data-theme="dark"] .glow {
  background: radial-gradient(circle at top right, rgba(157, 117, 255, 0.2), transparent 45%),
    radial-gradient(circle at 20% 20%, var(--glow), transparent 50%);
}

html[data-theme="dark"] .orbit {
  border-color: rgba(110, 242, 255, 0.2);
  box-shadow: 0 0 80px rgba(110, 242, 255, 0.2);
}

html[data-theme="dark"] .stars {
  background-image: radial-gradient(circle, rgba(255, 255, 255, 0.18) 1px, transparent 1px);
  opacity: 0.2;
}

@keyframes orbit {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes shimmer {
  0%,
  100% {
    opacity: 0.15;
  }
  50% {
    opacity: 0.35;
  }
}

.hero {
  padding: 3.5rem clamp(1.5rem, 6vw, 6rem) 2rem;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 3.5rem;
  flex-wrap: wrap;
}

.logo {
  font-family: "Orbitron", sans-serif;
  font-size: 1.3rem;
  letter-spacing: 0.3em;
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  font-size: 0.95rem;
  color: var(--muted);
}

.nav-links a {
  text-decoration: none;
  position: relative;
  padding-bottom: 0.25rem;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 0.2s ease;
}

.nav-links a:hover::after {
  width: 100%;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border-radius: 999px;
  border: 1px solid rgba(47, 107, 255, 0.25);
  background: var(--panel);
  color: var(--text);
  padding: 0.5rem 1rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.08);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.theme-toggle:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 22px rgba(15, 23, 42, 0.12);
}

.hero-main {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 3rem;
}

.hero-content h1 {
  font-family: "Orbitron", sans-serif;
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

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

.subtitle {
  margin-top: 0.75rem;
  font-weight: 600;
  color: var(--accent-2);
}

.summary {
  margin-top: 1.5rem;
  max-width: 40rem;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #05070f;
  text-decoration: none;
  font-weight: 600;
  box-shadow: 0 0 20px rgba(47, 107, 255, 0.3);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 26px rgba(47, 107, 255, 0.4);
}

.button.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(47, 107, 255, 0.4);
  box-shadow: none;
}

.skills {
  margin-top: 2.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.pill-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.75rem;
}

.pill-group span {
  border: 1px solid rgba(124, 58, 237, 0.35);
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
  font-size: 0.85rem;
  color: var(--text);
  background: rgba(124, 58, 237, 0.08);
}

.hero-card {
  background: var(--panel-light);
  border: 1px solid rgba(47, 107, 255, 0.2);
  border-radius: 24px;
  padding: 2rem;
  backdrop-filter: blur(18px);
  box-shadow: 0 30px 60px rgba(15, 23, 42, 0.2);
}

.card-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--muted);
}

.status {
  color: var(--accent);
  font-weight: 600;
}

.card-body {
  margin-top: 2rem;
  display: grid;
  gap: 1.5rem;
}

.card-body h3 {
  font-size: 1.1rem;
  color: var(--text);
}

.stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.stats h4 {
  font-family: "Orbitron", sans-serif;
  font-size: 1.4rem;
  color: var(--accent);
}

.section {
  padding: 3.5rem clamp(1.5rem, 6vw, 6rem);
}

.section-header {
  max-width: 44rem;
  margin-bottom: 2.5rem;
}

.section-header h2 {
  font-family: "Orbitron", sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
}

.section-header p {
  color: var(--muted);
  margin-top: 0.5rem;
}

.timeline {
  display: grid;
  gap: 2.5rem;
  position: relative;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 0.25rem;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, rgba(47, 107, 255, 0.7), transparent);
}

.timeline-item {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 1.5rem;
}

.timeline-marker {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--glow);
  margin-top: 0.4rem;
}

.timeline-content {
  background: var(--panel);
  border-radius: 18px;
  padding: 1.5rem;
  border: 1px solid rgba(47, 107, 255, 0.18);
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.1);
}

.timeline-title {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.timeline-content h3 {
  font-size: 1.1rem;
  margin-bottom: 0.2rem;
}

.meta {
  color: var(--muted);
  font-size: 0.9rem;
}

.timeline-content ul {
  margin-top: 1rem;
  padding-left: 1.2rem;
  color: var(--muted);
  display: grid;
  gap: 0.75rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.tags span {
  border-radius: 999px;
  border: 1px solid rgba(47, 107, 255, 0.3);
  padding: 0.2rem 0.7rem;
  font-size: 0.8rem;
  color: var(--accent);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.info-card {
  background: var(--panel);
  border-radius: 18px;
  padding: 1.5rem;
  border: 1px solid rgba(47, 107, 255, 0.2);
  box-shadow: 0 18px 30px rgba(15, 23, 42, 0.12);
}

.info-card h3 {
  margin-bottom: 0.5rem;
}

.project-link {
  display: inline-flex;
  align-items: center;
  margin-top: 1rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--accent);
}

.project-link:hover {
  text-decoration: underline;
}

.footer {
  padding: 2.5rem clamp(1.5rem, 6vw, 6rem) 3.5rem;
  border-top: 1px solid rgba(47, 107, 255, 0.18);
  text-align: center;
}

.footer p {
  font-family: "Orbitron", sans-serif;
  margin-bottom: 1rem;
  letter-spacing: 0.08em;
}

.footer-links {
  display: inline-flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

@media (max-width: 900px) {
  .nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-links {
    flex-wrap: wrap;
  }

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

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }
}