:root {
  --bg-color: #0b0f19;
  --bg-gradient: radial-gradient(circle at 50% 0%, #1a2538 0%, #0b0f19 70%);
  --accent-color: #00d2ff;
  --accent-glow: rgba(0, 210, 255, 0.4);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --font-sans: 'Inter', sans-serif;
  --font-heading: 'Outfit', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-color);
  background-image: var(--bg-gradient);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Background Animated Orbs */
.bg-orbs {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
  animation: float 20s infinite ease-in-out;
}

.orb-1 {
  top: -10%;
  left: -10%;
  width: 40vw;
  height: 40vw;
  background: rgba(0, 210, 255, 0.15);
}

.orb-2 {
  bottom: -20%;
  right: -10%;
  width: 50vw;
  height: 50vw;
  background: rgba(58, 123, 213, 0.15);
  animation-delay: -5s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(30px, -50px); }
  66% { transform: translate(-20px, 20px); }
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
}

h2.section-title {
  font-size: 2.5rem;
  margin-bottom: 3rem;
  margin-top: 2rem;
  text-align: center;
  background: linear-gradient(90deg, #fff, #94a3b8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

a {
  color: var(--accent-color);
  text-decoration: none;
  transition: all 0.3s ease;
}

a:hover {
  text-shadow: 0 0 8px var(--accent-glow);
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 5%;
  z-index: 1000;
  background: rgba(11, 15, 25, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  transition: all 0.3s ease;
}

.nav-brand {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: 1px;
}

.nav-brand span {
  color: var(--accent-color);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 1rem;
  position: relative;
}

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

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

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

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 5%;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
}

.hero-content {
  max-width: 800px;
}

.hero-greeting {
  color: var(--accent-color);
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 1rem;
  display: block;
}

.hero-title {
  font-size: 4rem;
  margin-bottom: 1rem;
}

.hero-subtitle {
  font-size: 2.5rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.hero-text {
  font-size: 1.125rem;
  color: var(--text-muted);
  margin-bottom: 3rem;
  max-width: 600px;
}

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

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  font-size: 1.25rem;
  transition: all 0.3s ease;
}

.social-links a:hover {
  background: var(--accent-color);
  border-color: var(--accent-color);
  transform: translateY(-5px);
  box-shadow: 0 10px 20px var(--accent-glow);
}

/* Glass Card Utility */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: var(--glass-shadow);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.glass-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Section Common */
section {
  padding: 10rem 0;
  margin-top: 5rem;
}

/* About Section */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.skills-container {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.skill-tag {
  padding: 0.5rem 1rem;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

.skill-tag:hover {
  background: rgba(0, 210, 255, 0.1);
  border-color: var(--accent-color);
  color: var(--accent-color);
}

/* Experience Section */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 20px;
  height: 100%;
  width: 2px;
  background: var(--glass-border);
}

.timeline-item {
  position: relative;
  padding-left: 60px;
  margin-bottom: 3rem;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: 11px;
  top: 5px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--bg-color);
  border: 2px solid var(--accent-color);
  box-shadow: 0 0 10px var(--accent-glow);
}

.timeline-date {
  font-family: var(--font-heading);
  color: var(--accent-color);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  display: block;
}

.timeline-title {
  font-size: 1.25rem;
  margin-bottom: 0.25rem;
}

.timeline-company {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.timeline-content {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.timeline-content ul {
  list-style: none;
  padding-left: 0;
  margin-top: 1rem;
}

.timeline-content li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
}

.timeline-content li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--accent-color);
}

/* Projects Section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
}

.project-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.project-icon {
  font-size: 2rem;
  color: var(--accent-color);
}

.project-links a {
  color: var(--text-muted);
  font-size: 1.25rem;
  margin-left: 1rem;
}

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

.project-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.project-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  flex-grow: 1;
  margin-bottom: 1.5rem;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Contact Section */
.contact-section {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.contact-text {
  color: var(--text-muted);
  margin-bottom: 2rem;
  font-size: 1.125rem;
}

.btn {
  display: inline-block;
  padding: 1rem 2rem;
  background: rgba(0, 210, 255, 0.1);
  border: 1px solid var(--accent-color);
  color: var(--accent-color);
  font-family: var(--font-heading);
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn:hover {
  background: var(--accent-color);
  color: var(--bg-color);
  box-shadow: 0 0 20px var(--accent-glow);
  text-shadow: none;
}

/* Footer */
footer {
  text-align: center;
  padding: 2rem 0;
  border-top: 1px solid var(--glass-border);
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Reveal Animation */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}

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

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(11, 15, 25, 0.95);
    backdrop-filter: blur(16px);
    padding: 2rem;
    border-bottom: 1px solid var(--glass-border);
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .menu-toggle {
    display: block;
  }
  
  .hero-title {
    font-size: 3rem;
  }
  
  .hero-subtitle {
    font-size: 1.8rem;
  }
  
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .timeline::before {
    left: 10px;
  }
  
  .timeline-item {
    padding-left: 40px;
  }
  
  .timeline-dot {
    left: 1px;
  }
}