:root {
  --primary-color: #3498db;
  --secondary-color: #2c3e50;
  --accent-color: #e74c3c;
  --text-color: #333;
  --bg-color: #f9f9f9;
  --card-bg: #ffffff;
  --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

.blue-theme {
  --primary-color: #3498db;
  --secondary-color: #2c3e50;
  --accent-color: #e74c3c;
}

.purple-theme {
  --primary-color: #9b59b6;
  --secondary-color: #8e44ad;
  --accent-color: #e056fd;
}

.green-theme {
  --primary-color: #2ecc71;
  --secondary-color: #27ae60;
  --accent-color: #1abc9c;
}

.dark-theme {
  --primary-color: #3498db;
  --secondary-color: #2c3e50;
  --accent-color: #e74c3c;
  --text-color: #f5f5f5;
  --bg-color: #121212;
  --card-bg: #1e1e1e;
  --shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  transition: var(--transition);
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

section {
  padding: 100px 0;
}

h1,
h2,
h3,
h4 {
  margin-bottom: 20px;
  color: var(--secondary-color);
}

h2 {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 50px;
  position: relative;
}

h2::after {
  content: "";
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background-color: var(--primary-color);
  border-radius: 2px;
}

p {
  margin-bottom: 15px;
}

a {
  text-decoration: none;
  color: var(--primary-color);
  transition: var(--transition);
}

.btn {
  display: inline-block;
  padding: 12px 30px;
  background-color: var(--primary-color);
  color: white;
  border-radius: 30px;
  font-weight: 600;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 1px;
  box-shadow: var(--shadow);
}

.btn:hover {
  background-color: var(--secondary-color);
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.btn-glow {
  position: relative;
  overflow: hidden;
}

.btn-glow::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.4),
    transparent
  );
  transition: 0.5s;
}

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

/* Navigation */
nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--card-bg);
  box-shadow: var(--shadow);
  z-index: 1000;
  transition: var(--transition);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
}

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary-color);
}

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

.nav-links li {
  margin-left: 30px;
}

.nav-links a {
  color: var(--text-color);
  font-weight: 500;
  position: relative;
}

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

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

.theme-switcher {
  position: fixed;
  top: 50%;
  right: 20px;
  transform: translateY(-50%);
  background-color: var(--card-bg);
  border-radius: 50px;
  padding: 10px;
  box-shadow: var(--shadow);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.theme-btn {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.theme-btn:hover {
  transform: scale(1.2);
}

.blue-btn {
  background-color: #3498db;
}

.purple-btn {
  background-color: #9b59b6;
}

.green-btn {
  background-color: #2ecc71;
}

.dark-btn {
  background-color: #2c3e50;
}

.mobile-menu {
  display: none;
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--bg-color) 0%, var(--card-bg) 100%);
  position: relative;
  overflow: hidden;
}

.hero-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.hero-text {
  flex: 1;
  max-width: 600px;
}

.hero-text h1 {
  font-size: 3.5rem;
  margin-bottom: 20px;
  line-height: 1.2;
}

.hero-text p {
  font-size: 1.2rem;
  margin-bottom: 30px;
  color: var(--secondary-color);
}

.tagline {
  display: flex;
  gap: 20px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.tagline span {
  background-color: var(--card-bg);
  padding: 8px 15px;
  border-radius: 20px;
  font-size: 0.9rem;
  box-shadow: var(--shadow);
}

.hero-image {
  flex: 1;
  position: relative;
  display: flex;
  justify-content: center;
}

.profile-img {
  width: 350px;
  height: 350px;
  border-radius: 50%;
  object-fit: cover;
  border: 5px solid var(--primary-color);
  box-shadow: 0 0 20px rgba(52, 152, 219, 0.5);
  position: relative;
  z-index: 2;
}

.floating-icons {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.icon {
  position: absolute;
  font-size: 2rem;
  color: var(--primary-color);
  animation: float 6s ease-in-out infinite;
}

.icon:nth-child(1) {
  top: 10%;
  left: 10%;
  animation-delay: 0s;
}

.icon:nth-child(2) {
  top: 20%;
  right: 15%;
  animation-delay: 1s;
}

.icon:nth-child(3) {
  bottom: 15%;
  left: 20%;
  animation-delay: 2s;
}

.icon:nth-child(4) {
  bottom: 25%;
  right: 10%;
  animation-delay: 3s;
}

.icon:nth-child(5) {
  top: 50%;
  left: 5%;
  animation-delay: 4s;
}

@keyframes float {
  0% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-20px) rotate(10deg);
  }
  100% {
    transform: translateY(0) rotate(0deg);
  }
}

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

.about-content {
  display: flex;
  align-items: center;
  gap: 50px;
}

.about-image {
  flex: 1;
}

.about-img {
  width: 100%;
  border-radius: 10px;
  box-shadow: var(--shadow);
}

.about-text {
  flex: 1;
}

.hobbies {
  display: flex;
  gap: 20px;
  margin-top: 30px;
}

.hobby {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.hobby i {
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: 10px;
}

/* Education Section */
.education-timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.education-timeline::after {
  content: "";
  position: absolute;
  width: 6px;
  background-color: var(--primary-color);
  top: 0;
  bottom: 0;
  left: 50%;
  margin-left: -3px;
  border-radius: 3px;
}

.timeline-item {
  padding: 10px 40px;
  position: relative;
  width: 50%;
  opacity: 0;
  transform: translateY(50px);
  transition: all 0.5s ease;
}

.timeline-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.timeline-item:nth-child(odd) {
  left: 0;
}

.timeline-item:nth-child(even) {
  left: 50%;
}

.timeline-content {
  padding: 20px 30px;
  background-color: var(--card-bg);
  border-radius: 10px;
  box-shadow: var(--shadow);
  position: relative;
}

.timeline-item:nth-child(odd) .timeline-content::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  right: -10px;
  background-color: var(--card-bg);
  top: 20px;
  border-radius: 50%;
  z-index: 1;
}

.timeline-item:nth-child(even) .timeline-content::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  left: -10px;
  background-color: var(--card-bg);
  top: 20px;
  border-radius: 50%;
  z-index: 1;
}

.timeline-content::before {
  content: "";
  position: absolute;
  width: 30px;
  height: 30px;
  background-color: var(--primary-color);
  border-radius: 50%;
  top: 15px;
  z-index: 2;
}

.timeline-item:nth-child(odd) .timeline-content::before {
  right: -45px;
}

.timeline-item:nth-child(even) .timeline-content::before {
  left: -45px;
}

.timeline-content h3 {
  color: var(--primary-color);
  margin-bottom: 5px;
}

.timeline-content .date {
  font-weight: 600;
  color: var(--secondary-color);
  margin-bottom: 10px;
}

/* Skills Section */
.skills-content {
  display: flex;
  gap: 50px;
}

.technical-skills,
.soft-skills {
  flex: 1;
}

.skill-category h3 {
  text-align: center;
  margin-bottom: 30px;
  color: var(--primary-color);
}

.skill-item {
  margin-bottom: 25px;
}

.skill-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
}

.skill-bar {
  height: 10px;
  background-color: #e0e0e0;
  border-radius: 5px;
  overflow: hidden;
}

.skill-progress {
  height: 100%;
  background-color: var(--primary-color);
  border-radius: 5px;
  width: 0;
  transition: width 1.5s ease;
}

/* Projects Section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 30px;
}

.project-card {
  background-color: var(--card-bg);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.project-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.project-info {
  padding: 20px;
}

.project-info h3 {
  margin-bottom: 10px;
  color: var(--primary-color);
}

.project-links {
  display: flex;
  gap: 10px;
  margin-top: 15px;
}

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

.contact-content {
  display: flex;
  gap: 50px;
}

.contact-form {
  flex: 1;
}

.form-group {
  margin-bottom: 20px;
}

.form-control {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid #ddd;
  border-radius: 5px;
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--primary-color);
  outline: none;
  box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

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

.social-links {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.social-icons {
  display: flex;
  gap: 20px;
  margin-top: 20px;
}

.social-icon {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
  transition: var(--transition);
}

.social-icon:hover {
  background-color: var(--secondary-color);
  transform: translateY(-5px);
}

/* Footer */
footer {
  background-color: var(--secondary-color);
  color: white;
  text-align: center;
  padding: 30px 0;
}

/* Responsive Design */
@media (max-width: 992px) {
  .hero-content {
    flex-direction: column;
    text-align: center;
  }

  .hero-text {
    margin-bottom: 50px;
  }

  .about-content {
    flex-direction: column;
  }

  .skills-content {
    flex-direction: column;
  }

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

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--card-bg);
    flex-direction: column;
    padding: 20px;
    box-shadow: var(--shadow);
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links li {
    margin: 10px 0;
  }

  .mobile-menu {
    display: block;
  }

  .education-timeline::after {
    left: 31px;
  }

  .timeline-item {
    width: 100%;
    padding-left: 70px;
    padding-right: 25px;
  }

  .timeline-item:nth-child(even) {
    left: 0;
  }

  .timeline-item:nth-child(odd) .timeline-content::before,
  .timeline-item:nth-child(even) .timeline-content::before {
    left: 15px;
  }

  .timeline-item:nth-child(odd) .timeline-content::after,
  .timeline-item:nth-child(even) .timeline-content::after {
    left: 35px;
  }
}