/* Global Styles */
body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  background: linear-gradient(135deg, from-slate-50 via-blue-50 to-indigo-50);
  min-height: 100vh;
  color: #374151;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(8px);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  z-index: 50;
  transition: all 0.3s ease;
}

.nav-container {
  max-width: 7xl;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 4rem;
}

.brand {
  font-size: 1.5rem;
  font-weight: 600;
  color: #4f46e5;
  transition: transform 0.3s ease;
}

.brand:hover {
  transform: scale(1.05);
}

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

.nav-btn {
  background: none;
  border: none;
  color: #374151;
  font-weight: 500;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
}

.nav-btn:hover {
  color: #4f46e5;
  transform: translateY(-1px);
}

.nav-btn.active {
  color: #4f46e5;
}

.nav-btn.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: #4f46e5;
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}

/* Page Management */
.page {
  display: none;
  padding-top: 4rem;
}

.page.active {
  display: block;
}

/* Container */
.container {
  max-width: 7xl;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Fade-in Animation */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s ease forwards;
}

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

/* Hero Section */
.hero {
  text-align: center;
  padding: 4rem 0;
}

.profile-img {
  width: 8rem;
  height: 8rem;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 2rem;
  border: 4px solid #4f46e5;
  box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.profile-img:hover {
  transform: scale(1.05);
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  color: #1f2937;
  margin-bottom: 0.5rem;
}

.hero h2 {
  font-size: 1.25rem;
  color: #6b7280;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.125rem;
  color: #4b5563;
  max-width: 32rem;
  margin: 0 auto 2rem;
}

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

/* Button Styles */
.btn {
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.btn:hover::before {
  left: 100%;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 15px rgba(0, 0, 0, 0.15);
}

.btn.secondary {
  background: rgba(255, 255, 255, 0.1);
  color: #4f46e5;
  border: 1px solid #4f46e5;
}

.btn.secondary:hover {
  background: #4f46e5;
  color: white;
}

/* Sections */
.about, .skills, .contact, .resume-section, .biodata-section {
  padding: 4rem 0;
}

.about h3, .skills h3, .contact h3, .resume-section h1, .biodata-section h1 {
  font-size: 2rem;
  font-weight: 700;
  color: #1f2937;
  text-align: center;
  margin-bottom: 2rem;
}

.about p {
  font-size: 1.125rem;
  color: #4b5563;
  line-height: 1.8;
  max-width: 42rem;
  margin: 0 auto 1rem;
  text-align: center;
}

/* Skills Section */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.skill-item {
  background: white;
  padding: 1.5rem;
  border-radius: 0.75rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.skill-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 15px rgba(0, 0, 0, 0.15);
}

.skill-item h4 {
  color: #4f46e5;
  margin-bottom: 0.5rem;
  font-size: 1.125rem;
  font-weight: 600;
}

.skill-item p {
  color: #6b7280;
}

/* Contact Section */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.contact-item {
  display: flex;
  align-items: center;
  background: white;
  padding: 1.5rem;
  border-radius: 0.75rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.contact-item:hover {
  transform: translateX(4px);
}

.contact-item .icon {
  margin-right: 1rem;
  color: #4f46e5;
  font-size: 1.5rem;
}

.contact-item p {
  margin: 0;
  color: #374151;
}

.contact-item a {
  color: #4f46e5;
  text-decoration: none;
  font-weight: 500;
}

.contact-item a:hover {
  text-decoration: underline;
}

/* Resume Section */
.resume-content {
  max-width: 48rem;
  margin: 0 auto;
}

.resume-item {
  margin-bottom: 3rem;
}

.resume-item h2 {
  font-size: 1.5rem;
  color: #4f46e5;
  margin-bottom: 1rem;
  border-bottom: 2px solid #4f46e5;
  padding-bottom: 0.5rem;
}

.education-details h3 {
  color: #1f2937;
  margin-bottom: 0.5rem;
}

.education-details p {
  color: #6b7280;
  margin: 0.25rem 0;
}

.skills-list {
  list-style: none;
  padding: 0;
}

.skills-list li {
  background: #f3f4f6;
  padding: 0.75rem;
  margin-bottom: 0.5rem;
  border-radius: 0.5rem;
  border-left: 4px solid #4f46e5;
}

.center-btn {
  text-align: center;
  margin-top: 2rem;
}

/* Biodata Section */
.biodata-content {
  max-width: 48rem;
  margin: 0 auto;
}

.biodata-list {
  background: white;
  padding: 2rem;
  border-radius: 0.75rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.biodata-list ul {
  list-style: none;
  padding: 0;
}

.biodata-list li {
  margin-bottom: 1rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid #e5e7eb;
}

.biodata-list li:last-child {
  border-bottom: none;
}

.biodata-list strong {
  color: #4f46e5;
}

/* Footer */
.footer {
  background: white;
  color: #374151;
  padding: 2rem 0;
  margin-top: 4rem;
  border-top: 1px solid #e5e7eb;
}

.footer p {
  text-align: center;
  font-size: 0.875rem;
  color: #000000;
}

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

  .hero h1 {
    font-size: 2.25rem;
  }

  .hero h2 {
    font-size: 1.125rem;
  }

  .hero p {
    font-size: 1rem;
  }

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

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

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

@media (max-width: 480px) {
  .nav-container {
    padding: 0 0.5rem;
  }

  .hero {
    padding: 2rem 0;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 16rem;
  }
}