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

:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #151515;
  --bg-card: #1a1a1a;
  --text-primary: #e0e0e0;
  --text-secondary: #a0a0a0;
  --accent-primary: #00ff88;
  --accent-secondary: #0088ff;
  --accent-hover: #00cc6d;
  --border-color: #2a2a2a;
  --shadow: rgba(0, 255, 136, 0.1);
}

html {
  scroll-behavior: smooth;
  height: 100%;
  width: 100%;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background-color: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
  animation: slideDown 0.5s ease-out;
}

@keyframes slideDown {
  from {
    transform: translateY(-100%);
  }
  to {
    transform: translateY(0);
  }
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--accent-primary);
  text-transform: uppercase;
  letter-spacing: 2px;
}

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

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
}

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

.nav-link:hover {
  color: var(--accent-primary);
}

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

/* Sections */
.section {
  min-height: 100vh;
  padding: 6rem 0;
  display: flex;
  align-items: center;
}

/* Hero Section */
.hero-section {
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(0, 255, 136, 0.1) 0%, transparent 70%);
  animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 0.5;
  }
  50% {
    transform: scale(1.2);
    opacity: 0.8;
  }
}

.hero-content {
  max-width: 800px;
  position: relative;
  z-index: 1;
}

.greeting {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.hero-title {
  font-size: 4rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
  from {
    text-shadow: 0 0 10px var(--shadow), 0 0 20px var(--shadow);
  }
  to {
    text-shadow: 0 0 20px var(--shadow), 0 0 30px var(--shadow);
  }
}

.hero-subtitle {
  font-size: 2rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.8;
}

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

.btn {
  padding: 1rem 2rem;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  border: 2px solid transparent;
  display: inline-block;
}

.btn-primary {
  background-color: var(--accent-primary);
  color: var(--bg-primary);
  border-color: var(--accent-primary);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px var(--shadow);
}

.btn-secondary {
  background-color: transparent;
  color: var(--accent-primary);
  border-color: var(--accent-primary);
}

.btn-secondary:hover {
  background-color: var(--accent-primary);
  color: var(--bg-primary);
  transform: translateY(-2px);
}

/* Section Titles */
.section-title {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 3rem;
  font-size: 1.1rem;
}

/* About Section */
#about {
  background-color: var(--bg-secondary);
}

.about-content p {
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.about-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.detail-item {
  background-color: var(--bg-card);
  padding: 1.5rem;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.detail-item:hover {
  border-color: var(--accent-primary);
  transform: translateY(-5px);
  box-shadow: 0 10px 30px var(--shadow);
}

.detail-item h3 {
  color: var(--accent-primary);
  margin-bottom: 0.5rem;
}

/* Skills Section */
.skills-section {
  background-color: var(--bg-primary);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.skill-card {
  background-color: var(--bg-card);
  padding: 2rem;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
  animation: fadeInUp 0.6s ease-out;
}

.skill-card:hover {
  border-color: var(--accent-primary);
  transform: translateY(-10px);
  box-shadow: 0 15px 40px var(--shadow);
}

.skill-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--accent-primary);
  font-weight: bold;
  text-shadow: 0 0 10px var(--shadow);
  display: inline-block;
  transition: all 0.3s ease;
}

.skill-card:hover .skill-icon {
  transform: scale(1.1);
  text-shadow: 0 0 20px var(--shadow), 0 0 30px var(--shadow);
}

.skill-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--accent-primary);
}

.skill-card p {
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Projects Section */
#projects {
  background-color: var(--bg-secondary);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.project-card {
  background-color: var(--bg-card);
  padding: 2rem;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.project-card:hover {
  border-color: var(--accent-primary);
  transform: translateY(-10px);
  box-shadow: 0 15px 40px var(--shadow);
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.project-header h3 {
  font-size: 1.5rem;
  color: var(--text-primary);
}

.project-tag {
  background-color: var(--accent-primary);
  color: var(--bg-primary);
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

.project-description {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.project-highlights {
  list-style: none;
  color: var(--text-secondary);
}

.project-highlights li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
}

.project-highlights li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--accent-primary);
  font-size: 1.2rem;
}

/* Contact Section */
.contact-section {
  background-color: var(--bg-primary);
}

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

.contact-card {
  background-color: var(--bg-card);
  padding: 2rem;
  border-radius: 10px;
  text-align: center;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.contact-card:hover {
  border-color: var(--accent-primary);
  transform: translateY(-10px);
  box-shadow: 0 15px 40px var(--shadow);
}

.contact-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--accent-primary);
  font-weight: bold;
  text-shadow: 0 0 10px var(--shadow);
  display: inline-block;
  transition: all 0.3s ease;
}

.contact-card:hover .contact-icon {
  transform: scale(1.1) rotate(5deg);
  text-shadow: 0 0 20px var(--shadow), 0 0 30px var(--shadow);
}

.contact-card h3 {
  color: var(--accent-primary);
  margin-bottom: 1rem;
}

.contact-card a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.contact-message {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* Footer */
.footer {
  background-color: var(--bg-secondary);
  padding: 2rem;
  text-align: center;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-color);
}

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

.fade-in {
  animation: fadeInUp 1s ease-out;
}

.slide-in {
  opacity: 0;
  transform: translateX(-50px);
  animation: slideInFromLeft 0.8s ease-out forwards;
}

.slide-in-delay {
  opacity: 0;
  transform: translateX(-50px);
  animation: slideInFromLeft 0.8s ease-out 0.3s forwards;
}

@keyframes slideInFromLeft {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    gap: 1rem;
    font-size: 0.9rem;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.5rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .skills-grid,
  .projects-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 480px) {
  .nav-container {
    padding: 1rem;
  }

  .nav-menu {
    gap: 0.5rem;
    font-size: 0.8rem;
  }

  .container {
    padding: 0 1rem;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1.2rem;
  }
}