* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
  transition: 
    background-color 0.3s, 
    color 0.3s,
    transform 0.3s,
    box-shadow 0.3s;
}

html {
  scroll-behavior: smooth;
}

body {
  line-height: 1.6;
  width: 100%;
  min-height: 100vh;
}

/* Light Theme (Default) */
body {
  background-color: #f8fafc;
  color: #1e293b;
}

/* Dark Theme */
body.dark-theme {
  background-color: #0f172a;
  color: #f1f5f9;
}

/* Typography */
h1, h2, h3, h4 {
  font-weight: 600;
  line-height: 1.2;
  color: #1e293b;
}

.dark-theme h1, 
.dark-theme h2, 
.dark-theme h3, 
.dark-theme h4 {
  color: #f1f5f9;
}

p {
  color: #64748b;
}

.dark-theme p {
  color: #cbd5e1;
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header {
  padding: 1.5rem 0;
  text-align: center;
  background-color: #ffffff;
  position: relative;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.dark-theme header {
  background-color: #1e293b;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

header div {
  margin-bottom: 0.5rem;
}

header strong {
  font-size: 2rem;
  font-weight: 700;
  background: linear-gradient(90deg, #2563eb, #7c3aed);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
}

.dark-theme header strong {
  background: linear-gradient(90deg, #3b82f6, #8b5cf6);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

header p {
  font-size: 1rem;
  color: #64748b;
  font-weight: 400;
}

.dark-theme header p {
  color: #cbd5e1;
}

#themeToggle {
  position: absolute;
  top: 1rem;
  right: 1rem;
  padding: 0.5rem 1rem;
  border-radius: 50px;
  font-size: 0.8rem;
  background-color: #2563eb;
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.dark-theme #themeToggle {
  background-color: #3b82f6;
}

#themeToggle:hover {
  background-color: #7c3aed;
  transform: translateY(-2px);
}

.dark-theme #themeToggle:hover {
  background-color: #8b5cf6;
}

/* Navigation */
nav {
  display: flex;
  justify-content: center;
  background-color: #ffffff;
  padding: 1rem 0;
  gap: 1.5rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.dark-theme nav {
  background-color: #1e293b;
}

nav a {
  text-decoration: none;
  color: #1e293b;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-weight: 500;
  letter-spacing: 0.5px;
  position: relative;
  transition: all 0.3s;
}

.dark-theme nav a {
  color: #f1f5f9;
}

nav a:hover {
  color: #2563eb;
  background-color: rgba(59, 130, 246, 0.1);
}

.dark-theme nav a:hover {
  color: #3b82f6;
}

nav a.active {
  color: #2563eb;
  font-weight: 600;
}

.dark-theme nav a.active {
  color: #3b82f6;
}

nav a.active::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 2px;
  bottom: 0;
  left: 0;
  background-color: #2563eb;
}

.dark-theme nav a.active::after {
  background-color: #3b82f6;
}

/* Section Styling */
section {
  padding: 5rem 0;
}

.heading {
  font-size: 2.5rem;
  margin-bottom: 2rem;
  text-align: center;
  position: relative;
  display: inline-block;
  width: 100%;
}

.heading::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, #2563eb, #7c3aed);
  margin: 0.5rem auto;
  border-radius: 2px;
}

.dark-theme .heading::after {
  background: linear-gradient(90deg, #3b82f6, #8b5cf6);
}

/* Home Section */
.home {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 4rem 0;
  gap: 2rem;
}

.hero-img {
  border-radius: 50%;
  width: 220px;
  height: 220px;
  object-fit: cover;
  border: 5px solid #2563eb;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s;
}

.dark-theme .hero-img {
  border-color: #3b82f6;
}

.hero-img:hover {
  transform: scale(1.05) rotate(5deg);
}

.home-content {
  max-width: 600px;
}

.home-content p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  line-height: 1.8;
}

/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 2rem;
  border-radius: 50px;
  font-weight: 500;
  letter-spacing: 0.5px;
  font-size: 1rem;
  transition: all 0.3s;
  text-decoration: none !important;
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  color: white;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.dark-theme .btn-primary {
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  background: linear-gradient(135deg, #7c3aed, #2563eb);
}

.dark-theme .btn-primary:hover {
  background: linear-gradient(135deg, #8b5cf6, #3b82f6);
}

/* About Section */
.about-content {
  max-width: 800px;
  margin: 0 auto;
}

.about-content p {
  margin-bottom: 2rem;
  font-size: 1.1rem;
  text-align: center;
}

.education-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 3rem;
}

.education-item {
  background: #ffffff;
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  border-left: 4px solid #2563eb;
  transition: transform 0.3s;
}

.dark-theme .education-item {
  background: #1e293b;
  border-left-color: #3b82f6;
}

.education-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.education-item h3 {
  color: #2563eb;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.dark-theme .education-item h3 {
  color: #3b82f6;
}

.education-item h3 i {
  font-size: 1.2rem;
}

.education-item p {
  margin-bottom: 0.3rem;
  font-size: 1rem;
  text-align: left;
}

.education-item p strong {
  color: #1e293b;
  font-weight: 500;
}

.dark-theme .education-item p strong {
  color: #f1f5f9;
}

.skills-container {
  margin-top: 3rem;
  text-align: center;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.skill-item {
  background: #ffffff;
  padding: 1rem;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  transition: all 0.3s;
}

.dark-theme .skill-item {
  background: #1e293b;
}

.skill-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  background: #2563eb;
  color: white;
}

.dark-theme .skill-item:hover {
  background: #3b82f6;
}

.skill-item i {
  font-size: 1.8rem;
}

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

.project {
  background: #ffffff;
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  transition: transform 0.3s;
  display: flex;
  flex-direction: column;
  height: 100%;
  border-top: 3px solid #2563eb;
}

.dark-theme .project {
  background: #1e293b;
  border-top-color: #3b82f6;
}

.project:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.project h3 {
  color: #2563eb;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.dark-theme .project h3 {
  color: #3b82f6;
}

.project p {
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.project-links {
  margin-top: auto;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: #2563eb;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.3s;
  padding: 0.5rem 0;
}

.dark-theme .project-link {
  color: #3b82f6;
}

.project-link:hover {
  color: #7c3aed;
  transform: translateX(5px);
}

.dark-theme .project-link:hover {
  color: #8b5cf6;
}

/* Contact Section */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  background: #ffffff;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.dark-theme .contact-form {
  background: #1e293b;
}

.contact-form input,
.contact-form textarea {
  padding: 1rem;
  font-size: 1rem;
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 8px;
  background-color: #ffffff;
  color: #1e293b;
  transition: all 0.3s;
}

.dark-theme .contact-form input,
.dark-theme .contact-form textarea {
  border: 1px solid rgba(255, 255, 255, 0.1);
  background-color: #1e293b;
  color: #f1f5f9;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.dark-theme .contact-form input:focus,
.dark-theme .contact-form textarea:focus {
  border-color: #3b82f6;
}

.contact-form textarea {
  min-height: 150px;
  resize: vertical;
}

.contact-form button {
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  color: white;
  border: none;
  padding: 1rem;
  font-size: 1rem;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 500;
  letter-spacing: 0.5px;
  transition: all 0.3s;
}

.dark-theme .contact-form button {
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
}

a:focus, button:focus, input:focus, textarea:focus {
  outline: 2px solid #f59e0b;
  outline-offset: 2px;
}

.dark-theme a:focus, 
.dark-theme button:focus, 
.dark-theme input:focus, 
.dark-theme textarea:focus {
  outline-color: #fbbf24;
}

.contact-form button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* Connect Section */
.connect-container {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.connect-content {
  margin-bottom: 2rem;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-top: 2rem;
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #2563eb;
  color: white;
  font-size: 1.8rem;
  transition: all 0.3s;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.dark-theme .social-link {
  background: #3b82f6;
  color: white;
}

.social-link:hover {
  transform: translateY(-5px) scale(1.1);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  color: white;
}

.dark-theme .social-link:hover {
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
}

/* Footer */
footer {
  text-align: center;
  padding: 3rem 0;
  background-color: #ffffff;
  margin-top: 2rem;
  border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.dark-theme footer {
  background-color: #1e293b;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

footer p {
  margin-bottom: 0.5rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin: 1.5rem 0;
}

.footer-link {
  color: #64748b;
  text-decoration: none;
  transition: color 0.3s;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.dark-theme .footer-link {
  color: #cbd5e1;
}

.footer-link:hover {
  color: #2563eb;
}

.dark-theme .footer-link:hover {
  color: #3b82f6;
}

.copyright {
  font-size: 0.9rem;
  color: #64748b;
}

.dark-theme .copyright {
  color: #cbd5e1;
}

/* Scroll indicator */
.scroll-indicator {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  z-index: 99;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
}

.dark-theme .scroll-indicator {
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
}

.scroll-indicator.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-indicator:hover {
  transform: translateY(-5px);
}

/* Responsive Design */
@media (max-width: 768px) {
  nav {
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0.5rem;
  }
  
  nav a {
    padding: 0.5rem;
    font-size: 0.9rem;
  }
  
  .heading {
    font-size: 2rem;
  }
  
  .projects {
    grid-template-columns: 1fr;
  }

  .social-links {
    gap: 1rem;
  }

  .social-link {
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  header strong {
    font-size: 1.5rem;
  }
  
  .heading {
    font-size: 1.8rem;
  }
  
  .hero-img {
    width: 180px;
    height: 180px;
  }
  
  .home-content p {
    font-size: 1rem;
  }
  
  .btn {
    padding: 0.7rem 1.5rem;
    font-size: 0.9rem;
  }

  .contact-form {
    padding: 1.5rem;
  }
}

/* Animation */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

section {
  animation: fadeIn 0.6s ease-out forwards;
}