/* Base Styles */
:root {
  --primary-color: #6c63ff;
  --secondary-color: #f50057;
  --text-color: #333;
  --bg-color: #f8f9fa;
  --card-bg: #ffffff;
  --border-color: #e0e0e0;
  --header-bg: rgba(255, 255, 255, 0.95);
  --shadow-color: rgba(0, 0, 0, 0.1);
  --timeline-color: #e0e0e0;
  --success-color: #4caf50;
  --warning-color: #ff9800;
  --danger-color: #f44336;
  --section-padding: 100px 0;
  --transition: all 0.3s ease;
  --gradient-bg: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
  --footer-bg: linear-gradient(135deg, #6c63ff 0%, #5a52d5 100%);
  --skill-gradient: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.dark-mode {
  --primary-color: #8c7dff;
  --secondary-color: #ff4081;
  --text-color: #f5f5f5;
  --bg-color: #121212;
  --card-bg: #1e1e1e;
  --border-color: #333;
  --header-bg: rgba(18, 18, 18, 0.95);
  --shadow-color: rgba(0, 0, 0, 0.3);
  --timeline-color: #333;
  --gradient-bg: linear-gradient(135deg, #1a1a1a 0%, #0d0d0d 100%);
  --footer-bg: linear-gradient(135deg, #5a52d5 0%, #4a43b3 100%);
  --skill-gradient: linear-gradient(135deg, #1e1e1e 0%, #2d2d2d 100%);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Poppins", sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background: var(--gradient-bg);
  transition: var(--transition);
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

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

a:hover {
  color: var(--secondary-color);
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
}

.section {
  margin-top: -80px;
  padding: var(--section-padding);
}

.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: 15px;
  position: relative;
  display: inline-block;
}

.underline {
  width: 80px;
  height: 4px;
  background: var(--primary-color);
  margin: 0 auto;
  position: relative;
}

.underline::before {
  content: "";
  position: absolute;
  width: 40px;
  height: 4px;
  background: var(--secondary-color);
  top: 0;
  left: 50%;
  transform: translateX(-50%);
}

/* Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: var(--header-bg);
  box-shadow: 0 2px 10px var(--shadow-color);
  transition: var(--transition);
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 15px;
}

.logo h1 {
  font-size: 1.8rem;
  font-weight: 700;
}

.logo span {
  color: var(--primary-color);
}

nav {
  display: flex;
  align-items: center;
}

.nav-links {
  display: flex;
}

.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;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  left: 0;
  bottom: -5px;
  transition: var(--transition);
}

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

.theme-toggle {
  margin-left: 30px;
  cursor: pointer;
  position: relative;
  width: 40px;
  height: 20px;
  background: var(--primary-color);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5px;
}

.theme-toggle i {
  font-size: 12px;
  color: #fff;
}

.theme-toggle::before {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  background: #fff;
  border-radius: 50%;
  left: 2px;
  transition: var(--transition);
}

.dark-mode .theme-toggle::before {
  left: 22px;
}

.hamburger {
  display: none;
  cursor: pointer;
}

.bar {
  width: 25px;
  height: 3px;
  background: var(--text-color);
  margin: 5px 0;
  transition: var(--transition);
}

/* Hero Section */
.hero {
  padding-top: 150px;
  padding-bottom: 100px;
  position: relative;
  overflow: hidden;
  margin-left: 120px;
}

.hero-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 50px;
}

.hero-text {
  flex: 1;
}

.hero-text .subtitle {
  font-size: 1.2rem;
  color: var(--primary-color);
  margin-bottom: 10px;
}

.hero-text .title {
  font-size: 3.5rem;
  line-height: 1.2;
  margin-bottom: 15px;
  background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-text .profession {
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.hero-text p {
  font-size: 1.1rem;
  margin-bottom: 30px;
  max-width: 600px;
}

.hero-btns {
  display: flex;
  gap: 20px;
  margin-bottom: 30px;
}

.btn {
  display: inline-block;
  padding: 12px 30px;
  border-radius: 50px;
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  outline: none;
}

.primary-btn {
  background: var(--primary-color);
  color: #fff;
}

.primary-btn:hover {
  background: var(--secondary-color);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

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

.secondary-btn:hover {
  background: var(--primary-color);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.social-icons {
  display: flex;
  gap: 15px;
}

.social-icons a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--card-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  font-size: 1.2rem;
  transition: var(--transition);
  box-shadow: 0 5px 15px var(--shadow-color);
}

.social-icons a:hover {
  background: var(--primary-color);
  color: #fff;
  transform: translateY(-3px);
}

.hero-image {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.image-container {
  width: 350px;
  height: 350px;
  border-radius: 50%;
  overflow: hidden;
  border: 5px solid var(--primary-color);
  animation: float 3s ease-in-out infinite;
  box-shadow: 0 15px 30px var(--shadow-color);
}

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

.scroll-down {
  margin-top: -50px;
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}

.scroll-down a {
  display: block;
  width: 40px;
  height: 40px;
  line-height: 40px;
  text-align: center;
  border-radius: 50%;
  background: var(--primary-color);
  color: #fff;
  font-size: 1.2rem;
  transition: var(--transition);
}

.scroll-down a:hover {
  background: var(--secondary-color);
}

@keyframes bounce {
  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateY(0) translateX(-50%);
  }
  40% {
    transform: translateY(-20px) translateX(-50%);
  }
  60% {
    transform: translateY(-10px) translateX(-50%);
  }
}

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

.about-image {
  flex: 1;
  position: relative;
}

.about-image img {
  border-radius: 10px;
  box-shadow: 0 10px 30px var(--shadow-color);
}

.about-text {
  flex: 1;
}

.about-text h3 {
  font-size: 1.8rem;
  margin-bottom: 20px;
  color: var(--primary-color);
}

.about-text p {
  margin-bottom: 20px;
}

.about-info {
  margin: 30px 0;
}

.info-item {
  margin-bottom: 15px;
  display: flex;
}

.info-title {
  min-width: 120px;
  font-weight: 600;
}

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

.category {
  background: var(--card-bg);
  border-radius: 15px;
  padding: 30px;
  box-shadow: 0 10px 30px var(--shadow-color);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  border-top: 4px solid var(--primary-color);
}

.category::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--skill-gradient);
  z-index: -1;
}

.category:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px var(--shadow-color);
}

.category h3 {
  font-size: 1.5rem;
  margin-bottom: 25px;
  color: var(--primary-color);
  display: flex;
  align-items: center;
  gap: 15px;
  position: relative;
  padding-bottom: 15px;
}

.category h3::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 3px;
  background: var(--secondary-color);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 25px;
}

.skill-item {
  text-align: center;
  position: relative;
  z-index: 1;
}

.skill-icon {
  width: 70px;
  height: 70px;
  border-radius: 15px;
  background: var(--bg-color);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 15px;
  color: var(--primary-color);
  font-size: 1.8rem;
  box-shadow: 0 8px 20px var(--shadow-color);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.skill-icon::before {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(108, 99, 255, 0.2) 0%, rgba(245, 0, 87, 0.2) 100%);
  top: 0;
  left: 0;
  z-index: -1;
}

.skill-item:hover .skill-icon {
  background: var(--primary-color);
  color: #fff;
  transform: translateY(-8px) rotate(5deg);
}

.skill-item h4 {
  font-size: 1rem;
  font-weight: 600;
  transition: var(--transition);
}

.skill-item:hover h4 {
  color: var(--primary-color);
}

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

.timeline::before {
  content: "";
  position: absolute;
  width: 2px;
  height: 100%;
  background: var(--timeline-color);
  left: 50px;
  top: 0;
}

.timeline-item {
  padding-left: 120px;
  position: relative;
  margin-bottom: 50px;
}

.timeline-icon {
  position: absolute;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--primary-color);
  left: 26px;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.2rem;
  z-index: 1;
}

.timeline-content {
  background: var(--card-bg);
  border-radius: 10px;
  padding: 30px;
  box-shadow: 0 5px 15px var(--shadow-color);
  transition: var(--transition);
}

.timeline-content:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px var(--shadow-color);
}

.timeline-content h3 {
  font-size: 1.5rem;
  margin-bottom: 5px;
  color: var(--primary-color);
}

.timeline-content h4 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.timeline-date {
  font-size: 0.9rem;
  color: var(--secondary-color);
  margin-bottom: 15px;
  display: inline-block;
}

.timeline-details h5 {
  font-size: 1.1rem;
  margin: 15px 0 10px;
}

.timeline-details ul {
  padding-left: 20px;
}

.timeline-details ul li {
  position: relative;
  padding-left: 15px;
  margin-bottom: 5px;
}

.timeline-details ul li::before {
  content: "";
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary-color);
  left: 0;
  top: 10px;
}

/* Achievements Section */
.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 50px;
}

.achievement-item {
  background: var(--card-bg);
  border-radius: 10px;
  padding: 30px;
  box-shadow: 0 5px 15px var(--shadow-color);
  transition: var(--transition);
  display: flex;
  align-items: flex-start;
  gap: 20px;
}

.achievement-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px var(--shadow-color);
}

.achievement-icon {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.achievement-content h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.certifications h3 {
  font-size: 1.8rem;
  margin-bottom: 30px;
  text-align: center;
  color: var(--primary-color);
}

.certifications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.certification-item {
  background: var(--card-bg);
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 5px 15px var(--shadow-color);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 15px;
}

.certification-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px var(--shadow-color);
}

.certification-item i {
  color: var(--primary-color);
  font-size: 1.5rem;
}

/* Projects Section */
.projects-filter {
  display: flex;
  justify-content: center;
  margin-bottom: 40px;
  flex-wrap: wrap;
  gap: 15px;
}

.filter-btn {
  padding: 10px 25px;
  background: var(--card-bg);
  border: none;
  border-radius: 30px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-color);
  transition: var(--transition);
  box-shadow: 0 5px 15px var(--shadow-color);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.filter-btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  transition: var(--transition);
  z-index: -1;
}

.filter-btn:hover::before,
.filter-btn.active::before {
  width: 100%;
}

.filter-btn:hover,
.filter-btn.active {
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 10px 20px var(--shadow-color);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 30px;
}

.project-card {
  background: var(--card-bg);
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 10px 30px var(--shadow-color);
  transition: var(--transition);
  position: relative;
  top: 0;
  border-bottom: 4px solid transparent;
}

.project-card[data-category="ml"] {
  border-bottom-color: var(--primary-color);
}

.project-card[data-category="other"] {
  border-bottom-color: var(--secondary-color);
}

.project-card:hover {
  transform: translateY(-15px);
  box-shadow: 0 20px 40px var(--shadow-color);
}

.project-image {
  height: 220px;
  overflow: hidden;
  position: relative;
}

.project-image::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 50%;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.5), transparent);
  opacity: 0;
  transition: var(--transition);
}

.project-card:hover .project-image::after {
  opacity: 1;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.project-card:hover .project-image img {
  transform: scale(1.1);
}

.project-content {
  padding: 25px;
}

.project-content h3 {
  font-size: 1.3rem;
  margin-bottom: 5px;
  color: var(--primary-color);
}

.project-date {
  font-size: 0.9rem;
  color: var(--secondary-color);
  margin-bottom: 15px;
  display: inline-block;
}

.project-content p {
  margin-bottom: 20px;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.project-tech span {
  background: var(--bg-color);
  color: var(--primary-color);
  padding: 5px 10px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
}

.project-links {
  display: flex;
  gap: 15px;
  margin-top: 20px;
}

.project-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 15px;
  border-radius: 5px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}

.github-btn {
  background: #24292e;
  color: #fff;
}

.demo-btn {
  background: var(--primary-color);
  color: #fff;
}

.project-link-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 15px var(--shadow-color);
}

.github-btn:hover {
  background: #000;
  color: #fff;
}

.demo-btn:hover {
  background: var(--secondary-color);
  color: #fff;
}

/* Hide projects based on filter */
.project-card.hide {
  display: none;
}

/* Contact Section */
.contact-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 50px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
}

.contact-icon {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-details h3 {
  font-size: 1.2rem;
  margin-bottom: 5px;
}

.contact-form {
  background: var(--card-bg);
  border-radius: 10px;
  padding: 30px;
  box-shadow: 0 5px 15px var(--shadow-color);
}

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

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid var(--border-color);
  border-radius: 5px;
  background: var(--bg-color);
  color: var(--text-color);
  font-family: "Poppins", sans-serif;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary-color);
  outline: none;
}

.form-group textarea {
  height: 150px;
  resize: none;
}

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

.reference-card {
  background: var(--card-bg);
  border-radius: 10px;
  padding: 30px;
  box-shadow: 0 5px 15px var(--shadow-color);
  transition: var(--transition);
}

.reference-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px var(--shadow-color);
}

.reference-content h3 {
  font-size: 1.3rem;
  margin-bottom: 5px;
  color: var(--primary-color);
}

.reference-title {
  font-size: 1rem;
  margin-bottom: 5px;
}

.reference-subtitle {
  font-size: 0.9rem;
  margin-bottom: 15px;
}

.reference-contact {
  margin-top: 15px;
}

.reference-contact p {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 5px;
}

.reference-contact i {
  color: var(--primary-color);
}

/* Footer */
footer {
  background: var(--footer-bg);
  padding: 80px 0 20px;
  margin-top: 50px;
  color: #fff;
  position: relative;
  overflow: hidden;
  margin-top: -90px;
}

footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='rgba(255,255,255,0.05)' fill-rule='evenodd'/%3E%3C/svg%3E");
  opacity: 0.3;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 50px;
  margin-bottom: 40px;
  position: relative;
  z-index: 1;
}

.footer-logo h2 {
  font-size: 2.2rem;
  margin-bottom: 15px;
  font-weight: 700;
}

.footer-logo span {
  color: #fff;
  position: relative;
}

.footer-logo span::after {
  content: "";
  position: absolute;
  width: 8px;
  height: 8px;
  background: var(--secondary-color);
  border-radius: 50%;
  bottom: 5px;
  right: -10px;
}

.footer-logo p {
  font-size: 1.1rem;
  margin-bottom: 20px;
  opacity: 0.9;
}

.footer-links h3,
.footer-social h3 {
  font-size: 1.3rem;
  margin-bottom: 25px;
  position: relative;
  display: inline-block;
  font-weight: 600;
}

.footer-links h3::after,
.footer-social h3::after {
  content: "";
  position: absolute;
  width: 40px;
  height: 3px;
  background: var(--secondary-color);
  left: 0;
  bottom: -10px;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-links a::before {
  content: "→";
  font-size: 1.2rem;
  opacity: 0;
  transform: translateX(-10px);
  transition: var(--transition);
}

.footer-links a:hover {
  color: #fff;
  padding-left: 5px;
}

.footer-links a:hover::before {
  opacity: 1;
  transform: translateX(0);
}

.footer-social .social-icons {
  margin-top: 25px;
  display: flex;
  gap: 15px;
}

.footer-social .social-icons a {
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.3rem;
  transition: var(--transition);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-social .social-icons a:hover {
  background: var(--secondary-color);
  transform: translateY(-5px);
  border-color: var(--secondary-color);
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
}

.footer-bottom::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 3px;
  background: var(--secondary-color);
}

.footer-bottom p {
  font-size: 0.9rem;
  opacity: 0.8;
}

.footer-wave {
  position: absolute;
  top: -70px;
  left: 0;
  width: 100%;
  height: 70px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120' preserveAspectRatio='none'%3E%3Cpath d='M0,0V46.29c47.79,22.2,103.59,32.17,158,28,70.36-5.37,136.33-33.31,206.8-37.5C438.64,32.43,512.34,53.67,583,72.05c69.27,18,138.3,24.88,209.4,13.08,36.15-6,69.85-17.84,104.45-29.34C989.49,25,1113-14.29,1200,52.47V0Z' opacity='.25' fill='%23ffffff'%3E%3C/path%3E%3Cpath d='M0,0V15.81C13,36.92,27.64,56.86,47.69,72.05,99.41,111.27,165,111,224.58,91.58c31.15-10.15,60.09-26.07,89.67-39.8,40.92-19,84.73-46,130.83-49.67,36.26-2.85,70.9,9.42,98.6,31.56,31.77,25.39,62.32,62,103.63,73,40.44,10.79,81.35-6.69,119.13-24.28s75.16-39,116.92-43.05c59.73-5.85,113.28,22.88,168.9,38.84,30.2,8.66,59,6.17,87.09-7.5,22.43-10.89,48-26.93,60.65-49.24V0Z' opacity='.5' fill='%23ffffff'%3E%3C/path%3E%3Cpath d='M0,0V5.63C149.93,59,314.09,71.32,475.83,42.57c43-7.64,84.23-20.12,127.61-26.46,59-8.63,112.48,12.24,165.56,35.4C827.93,77.22,886,95.24,951.2,90c86.53-7,172.46-45.71,248.8-84.81V0Z' fill='%23ffffff'%3E%3C/path%3E%3C/svg%3E");
  background-size: cover;
  background-repeat: no-repeat;
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 40px;
  height: 40px;
  background: var(--primary-color);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 99;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  box-shadow: 0 5px 15px var(--shadow-color);
}

.back-to-top.active {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--secondary-color);
  transform: translateY(-5px);
}

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

.fade-in {
  animation: fadeIn 0.8s ease forwards;
}

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

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

  .hero-btns {
    justify-content: center;
  }

  .social-icons {
    justify-content: center;
  }

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

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

@media screen and (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 80px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 80px);
    background: var(--bg-color);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 30px;
    transition: var(--transition);
  }

  .nav-links.active {
    left: 0;
  }

  .hamburger {
    display: block;
  }

  .hamburger.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .hamburger.active .bar:nth-child(2) {
    opacity: 0;
  }

  .hamburger.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

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

@media screen and (max-width: 576px) {
  .section-header h2 {
    font-size: 2rem;
  }

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

  .hero-text .profession {
    font-size: 1.2rem;
  }

  .hero-btns {
    flex-direction: column;
    gap: 15px;
  }

  .timeline-item {
    padding-left: 80px;
  }

  .timeline::before {
    left: 30px;
  }

  .timeline-icon {
    left: 6px;
  }
}