@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --primary: #3498db;
  --secondary: #2c3e50;
  --accent: #e74c3c;
  --dark: #1a1a2e;
  --light: #f5f7fa;
  --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --space-gradient: linear-gradient(180deg, #000428 0%, #004e92 100%);
}

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

body {
  font-family: 'Inter', sans-serif;
  background: var(--dark);
  color: #fff;
  overflow-x: hidden;
}

/* Animated Background */
.stars {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.star {
  position: absolute;
  width: 2px;
  height: 2px;
  background: white;
  border-radius: 50%;
  animation: twinkle 3s infinite;
}

@keyframes twinkle {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

/* Navigation */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(26, 26, 46, 0.95);
  backdrop-filter: blur(10px);
  padding: 1rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.logo {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.5rem;
  font-weight: 900;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.nav-links a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s;
}

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

/* Hero Section */
.hero {
  position: relative;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 5%;
  background: var(--space-gradient);
}

.hero-content {
  position: relative;
  z-index: 1;
  animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero h1 {
  font-family: 'Orbitron', sans-serif;
  font-size: 4rem;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: glow 2s ease-in-out infinite;
}

@keyframes glow {
  0%, 100% { filter: drop-shadow(0 0 10px rgba(102, 126, 234, 0.5)); }
  50% { filter: drop-shadow(0 0 20px rgba(102, 126, 234, 0.8)); }
}

.hero .subtitle {
  font-size: 1.5rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 2rem;
}

.hero .tagline {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 3rem;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  padding: 1rem 2rem;
  border: none;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  text-decoration: none;
  display: inline-block;
}

.btn-primary {
  background: var(--gradient);
  color: white;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

.btn-secondary {
  background: transparent;
  color: white;
  border: 2px solid var(--primary);
}

.btn-secondary:hover {
  background: var(--primary);
}

/* Section Styling */
section {
  position: relative;
  padding: 5rem 5%;
  z-index: 1;
}

.section-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 3rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* About Section */
#about {
  background: rgba(26, 26, 46, 0.8);
}

.about-content {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
  align-items: center;
}

.profile-image {
  width: 250px;
  height: 250px;
  border-radius: 50%;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 6rem;
  box-shadow: 0 10px 40px rgba(102, 126, 234, 0.5);
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}

.about-text h3 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  color: var(--primary);
}

.about-text p {
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 1rem;
}

/* Skills Section */
#skills {
  background: rgba(0, 4, 40, 0.6);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.skill-card {
  background: rgba(255, 255, 255, 0.05);
  padding: 2rem;
  border-radius: 15px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.3s;
  backdrop-filter: blur(10px);
}

.skill-card:hover {
  transform: translateY(-10px);
  border-color: var(--primary);
  box-shadow: 0 10px 30px rgba(52, 152, 219, 0.3);
}

.skill-card h3 {
  color: var(--primary);
  margin-bottom: 1rem;
  font-size: 1.3rem;
}

.skill-card ul {
  list-style: none;
}

.skill-card li {
  padding: 0.5rem 0;
  color: rgba(255, 255, 255, 0.8);
  position: relative;
  padding-left: 1.5rem;
}

.skill-card li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: bold;
}

/* Experience Timeline */
#experience {
  background: rgba(26, 26, 46, 0.8);
}

.timeline {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--primary);
  transform: translateX(-50%);
}

.timeline-item {
  margin-bottom: 3rem;
  position: relative;
  width: 45%;
}

.timeline-item:nth-child(odd) {
  margin-left: auto;
  padding-left: 3rem;
}

.timeline-item:nth-child(even) {
  padding-right: 3rem;
  text-align: right;
}

.timeline-item::before {
  content: '';
  position: absolute;
  top: 0;
  width: 15px;
  height: 15px;
  background: var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 20px var(--primary);
}

.timeline-item:nth-child(odd)::before {
  left: -8px;
}

.timeline-item:nth-child(even)::before {
  right: -8px;
}

.timeline-content {
  background: rgba(255, 255, 255, 0.05);
  padding: 1.5rem;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.timeline-content h3 {
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.timeline-content .date {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

/* Contact Section */
#contact {
  background: rgba(0, 4, 40, 0.6);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  max-width: 900px;
  margin: 0 auto;
}

.contact-card {
  background: rgba(255, 255, 255, 0.05);
  padding: 2rem;
  border-radius: 15px;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.3s;
}

.contact-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
}

.contact-card .icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.contact-card h3 {
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.contact-card a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color 0.3s;
}

.contact-card a:hover {
  color: var(--primary);
}

/* Footer */
footer {
  text-align: center;
  padding: 2rem;
  background: rgba(0, 0, 0, 0.5);
  color: rgba(255, 255, 255, 0.6);
  position: relative;
  z-index: 1;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }

  .nav-links {
    display: none;
  }

  .about-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .profile-image {
    margin: 0 auto;
  }

  .timeline::before {
    left: 0;
  }

  .timeline-item,
  .timeline-item:nth-child(odd),
  .timeline-item:nth-child(even) {
    width: 100%;
    padding-left: 3rem;
    padding-right: 0;
    text-align: left;
  }

  .timeline-item::before,
  .timeline-item:nth-child(odd)::before,
  .timeline-item:nth-child(even)::before {
    left: -8px;
  }
}

/* PDF Download Button */
.pdf-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--accent);
  color: white;
  padding: 1rem;
  border-radius: 50%;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  cursor: pointer;
  box-shadow: 0 5px 20px rgba(231, 76, 60, 0.5);
  transition: all 0.3s;
  z-index: 1000;
  text-decoration: none;
}

.pdf-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 30px rgba(231, 76, 60, 0.7);
}