:root {
  --bg-primary: #0f1729;
  --bg-secondary: #162040;
  --bg-card: #1a2747;
  --text-primary: #e8edf5;
  --text-secondary: #8b9dc3;
  --accent: #4f8fff;
  --accent-glow: rgba(79, 143, 255, 0.3);
  --accent-secondary: #7c5cfc;
  --gradient: linear-gradient(135deg, var(--accent), var(--accent-secondary));
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
}

#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* Navbar */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  backdrop-filter: blur(12px);
  background: rgba(15, 23, 41, 0.7);
  border-bottom: 1px solid rgba(79, 143, 255, 0.1);
  transition: all 0.3s ease;
}

.nav-logo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 400;
  transition: color 0.3s;
  position: relative;
}

.nav-links a:hover {
  color: var(--accent);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient);
  transition: width 0.3s;
}

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

/* Sections */
main {
  position: relative;
  z-index: 1;
}

section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6rem 2rem;
}

.section-container {
  max-width: 1000px;
  width: 100%;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 3rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Hero */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-left: 8%;
}

.hero-content {
  max-width: 700px;
}

.hero-greeting {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.1rem;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.hero-name {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1rem;
}

.hero-title-wrapper {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.3rem;
  color: var(--accent);
  margin-bottom: 1.5rem;
  min-height: 2rem;
}

.cursor {
  animation: blink 1s infinite;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  gap: 1rem;
}

.btn {
  padding: 0.8rem 2rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.3s;
  display: inline-block;
}

.btn-primary {
  background: var(--gradient);
  color: white;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px var(--accent-glow);
}

.btn-outline {
  border: 1.5px solid var(--accent);
  color: var(--accent);
}

.btn-outline:hover {
  background: rgba(79, 143, 255, 0.1);
  transform: translateY(-2px);
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 3rem;
  align-items: start;
}

.about-text p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 1rem;
  font-size: 1.05rem;
}

.about-text strong {
  color: var(--accent);
}

.about-stats {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid rgba(79, 143, 255, 0.15);
  border-radius: 12px;
  padding: 1.5rem;
  text-align: center;
  transition: all 0.3s;
}

.stat-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
  transform: translateY(-3px);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-plus {
  font-size: 2rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  display: block;
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-top: 0.3rem;
}

/* Skills */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 2rem;
}

.skills-grid .skill-category {
  grid-column: span 2;
}

/* Center last 2 items: offset by 1 col */
.skills-grid .skill-category:nth-child(4) {
  grid-column: 2 / span 2;
}

.skills-grid .skill-category:nth-child(5) {
  grid-column: 4 / span 2;
}

@media (max-width: 900px) {
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .skills-grid .skill-category,
  .skills-grid .skill-category:nth-child(4),
  .skills-grid .skill-category:nth-child(5) {
    grid-column: span 1;
  }
}

@media (max-width: 550px) {
  .skills-grid {
    grid-template-columns: 1fr;
  }
}

.skill-category {
  background: var(--bg-card);
  border: 1px solid rgba(79, 143, 255, 0.15);
  border-radius: 12px;
  padding: 2rem;
  transition: all 0.3s;
}

.skill-category:hover {
  border-color: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
}

.skill-category h3 {
  font-size: 1.2rem;
  margin-bottom: 1.2rem;
  color: var(--accent);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.skill-tag {
  background: rgba(79, 143, 255, 0.1);
  color: var(--text-secondary);
  padding: 0.4rem 1rem;
  border-radius: 20px;
  font-size: 0.85rem;
  border: 1px solid rgba(79, 143, 255, 0.2);
  transition: all 0.3s;
}

.skill-tag:hover {
  background: rgba(79, 143, 255, 0.2);
  color: var(--text-primary);
  border-color: var(--accent);
}

/* Projects */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid rgba(79, 143, 255, 0.15);
  border-radius: 12px;
  padding: 2rem;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient);
  transform: scaleX(0);
  transition: transform 0.3s;
}

.project-card:hover::before {
  transform: scaleX(1);
}

.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.project-icon {
  font-family: 'JetBrains Mono', monospace;
  font-size: 2rem;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}

.project-card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.8rem;
}

.project-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1.2rem;
}

.project-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.project-tags span {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent);
  background: rgba(79, 143, 255, 0.1);
  padding: 0.25rem 0.7rem;
  border-radius: 4px;
}

/* Contact */
#contact {
  text-align: center;
}

#contact .section-container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.contact-desc {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 2.5rem;
}

.contact-links {
  display: flex;
  gap: 1.5rem;
}

.contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-card);
  border: 1px solid rgba(79, 143, 255, 0.15);
  border-radius: 12px;
  padding: 2rem 2.5rem;
  text-decoration: none;
  color: var(--text-secondary);
  transition: all 0.3s;
  min-width: 120px;
}

.contact-card:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.contact-icon {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.5rem;
  font-weight: 700;
}

/* Footer */
footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 2rem;
  color: var(--text-secondary);
  font-size: 0.85rem;
  border-top: 1px solid rgba(79, 143, 255, 0.1);
}

/* Scroll animations */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
  nav { padding: 0.8rem 1rem; }
  .nav-links { gap: 1rem; font-size: 0.8rem; }
  #hero { padding-left: 5%; }
  .about-grid { grid-template-columns: 1fr; }
  .about-stats { flex-direction: row; }
  .stat-card { flex: 1; padding: 1rem; }
  .stat-number { font-size: 1.8rem; }
  .contact-links { flex-direction: column; align-items: center; }
  .hero-cta { flex-direction: column; }
}

@media (max-width: 480px) {
  .nav-links { display: none; }
  .about-stats { flex-direction: column; }
}