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

:root {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --accent-blue: #3b82f6;
  --accent-blue-light: #60a5fa;
  --accent-cyan: #06b6d4;
  --border-color: #334155;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

body {
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Navigation */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: all 0.3s ease;
}

nav.scrolled {
  background: rgba(15, 23, 42, 0.95);
  box-shadow: var(--shadow-lg);
}

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

.nav-logo {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.3s ease;
}

.nav-logo:hover {
  color: var(--accent-blue);
}

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

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
}

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

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

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

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 6rem 2rem 4rem;
}

.hero-content {
  max-width: 1200px;
  width: 100%;
}

.hero-label {
  color: var(--accent-blue);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  opacity: 0;
  animation: fadeInUp 0.8s ease forwards;
}

.hero-title {
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  background: linear-gradient(
    135deg,
    var(--text-primary) 0%,
    var(--text-secondary) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.2s forwards;
}

.hero-subtitle {
  font-size: clamp(1.25rem, 3vw, 1.875rem);
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 700px;
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.4s forwards;
}

.hero-description {
  font-size: 1.125rem;
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 650px;
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.6s forwards;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.8s forwards;
}

.btn {
  padding: 0.875rem 2rem;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

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

.btn-primary:hover {
  background: var(--accent-blue-light);
  border-color: var(--accent-blue-light);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(59, 130, 246, 0.3);
}

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

.btn-secondary:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  transform: translateY(-2px);
}

/* Section Styles */
section {
  padding: 6rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  margin-bottom: 4rem;
}

.section-label {
  color: var(--accent-blue);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.section-description {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 700px;
}

/* About Section */
#about {
  text-align: initial;
  max-width: 75%;
}

#about .section-header {
  text-align: center;
}

.about-grid {
  display: grid;
  gap: 2rem;
}

.about-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 2.5rem;
  transition: all 0.3s ease;
  line-height: 2;
  font-size: 1.15rem;
}

.about-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  border-color: var(--accent-blue);
}

.about-container {
  display: flex;
  justify-content: center;
  gap: 2rem;
}

.about-img {
  border-radius: 10px;
  height: 100%;
  width: 100%;
}

/* Experience Section */
.experience-grid {
  display: grid;
  gap: 2rem;
}

.experience-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 2.5rem;
  transition: all 0.3s ease;
}

.experience-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  border-color: var(--accent-blue);
}

.experience-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.experience-company {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.experience-role {
  font-size: 1.125rem;
  color: var(--accent-blue);
  font-weight: 600;
}

.experience-date {
  color: var(--text-muted);
  font-size: 0.9375rem;
  font-weight: 500;
}

.experience-achievements {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.experience-achievements li {
  color: var(--text-secondary);
  padding-left: 1.5rem;
  position: relative;
  line-height: 1.7;
}

.experience-achievements li::before {
  content: "▹";
  position: absolute;
  left: 0;
  color: var(--accent-blue);
  font-size: 1.25rem;
}

/* Projects Section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

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

.project-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  border-color: var(--accent-blue);
}

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

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.25rem;
}

.project-title {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.project-link {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.3s ease;
  font-size: 1.25rem;
}

.project-link:hover {
  color: var(--accent-blue);
}

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

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.tech-tag {
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent-blue);
  padding: 0.375rem 0.875rem;
  border-radius: 0.375rem;
  font-size: 0.8125rem;
  font-weight: 500;
  border: 1px solid rgba(59, 130, 246, 0.2);
}

.project-metrics {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.project-img {
  width: 100%;
  border-radius: 7.5px;
}

.metric {
  color: var(--text-muted);
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.metric strong {
  color: var(--accent-blue);
  font-weight: 600;
}

/* Education Section */
.education-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 2.5rem;
  margin-bottom: 2rem;
}

.education-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.education-school {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.education-degree {
  font-size: 1.125rem;
  color: var(--accent-blue);
  font-weight: 600;
}

.education-gpa {
  color: var(--text-secondary);
  font-weight: 500;
}

.coursework {
  margin-top: 1.5rem;
}

.coursework-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.coursework-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.course-tag {
  background: rgba(59, 130, 246, 0.05);
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
  border-radius: 0.375rem;
  font-size: 0.875rem;
  border: 1px solid var(--border-color);
}

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

.skill-category {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 2rem;
}

.skill-category-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.skill-category-icon {
  color: var(--accent-blue);
  font-size: 1.5rem;
}

.skill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.skill-item {
  background: rgba(59, 130, 246, 0.1);
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
  border-radius: 0.375rem;
  font-size: 0.875rem;
  border: 1px solid rgba(59, 130, 246, 0.2);
  font-weight: 500;
}

/* Contact Section */
.contact-content {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.contact-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.contact-description {
  font-size: 1.125rem;
  color: var(--text-muted);
  margin-bottom: 3rem;
  line-height: 1.7;
}

.contact-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
}

.contact-link:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  transform: translateY(-4px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

/* Footer */
footer {
  padding: 3rem 2rem;
  text-align: center;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.875rem;
}

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

/* Mobile Responsive */
@media (max-width: 1425px) {
  .about-container {
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .section-image {
    display: flex;
    justify-content: center;
  }

  .about-img {
    height: 40%;
    width: 60%;
  }
}

@media (max-width: 768px) {
  .nav-links {
    gap: 1rem;
  }

  .nav-links a {
    font-size: 0.875rem;
  }

  section {
    padding: 4rem 1.5rem;
  }

  .hero {
    padding: 5rem 1.5rem 3rem;
  }

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

  .experience-card,
  .education-card {
    padding: 1.75rem;
  }

  .project-card {
    padding: 1.5rem;
  }

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

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

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

  .btn {
    width: 100%;
    justify-content: center;
  }

  .contact-links {
    flex-direction: column;
  }

  .contact-link {
    width: 100%;
    justify-content: center;
  }

  .about-img {
    width: 100%;
    height: auto;
  }

  #about {
    text-align: initial;
    max-width: 75%;
  }
}

/* Smooth Scroll */
html {
  scroll-behavior: smooth;
}

/* Selection */
::selection {
  background: var(--accent-blue);
  color: white;
}