:root {
  --primary-color: #4e54c8;
  --secondary-color: #8f94fb;
  --text-color: #ffffff;
  --text-dark: #333333;
  --glass-color: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Poppins', sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: var(--text-color);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Orbitron', sans-serif;
  font-weight: 600;
}

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

/* Glassmorphism Effect */
.glass-card {
  background: var(--glass-color);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 10px;
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  padding: 20px;
  transition: var(--transition);
  margin-bottom: 20px;
}

.glass-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.glass-progress {
  background: rgba(255, 255, 255, 0.1);
  height: 8px;
  border-radius: 4px;
  overflow: hidden;
}

.glass-progress .progress-bar {
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

/* Glow Effect */
.glow-text {
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.btn-glow {
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn-glow::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color), var(--primary-color));
  background-size: 200% 200%;
  z-index: -1;
  transition: var(--transition);
  opacity: 0;
}

.btn-glow:hover::before {
  opacity: 1;
  animation: gradient 3s ease infinite;
}

@keyframes gradient {
  0% {
      background-position: 0% 50%;
  }
  50% {
      background-position: 100% 50%;
  }
  100% {
      background-position: 0% 50%;
  }
}

/* Navbar */
.glass-nav {
  background: var(--glass-color) !important;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
  border-bottom: 1px solid var(--glass-border);
  padding: 15px 0;
  transition: var(--transition);
}

.glass-nav.scrolled {
  padding: 10px 0;
  box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
}

.navbar-brand .logo-text {
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 1.5rem;
  background: linear-gradient(45deg, #fff, #4e54c8);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 10px rgba(78, 84, 200, 0.3);
}

.navbar-toggler {
  border: none;
  color: var(--text-color);
  font-size: 1.5rem;
}

.navbar-nav .nav-link {
  color: var(--text-color);
  font-weight: 500;
  padding: 8px 15px;
  margin: 0 5px;
  position: relative;
}

.navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--text-color);
  transition: var(--transition);
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
  width: 100%;
}

.navbar-nav .nav-link.active {
  font-weight: 600;
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

/* Hero Section */
.hero-section {
  height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('https://images.unsplash.com/photo-1518655048521-f130df041f66?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80') no-repeat center center/cover;
  z-index: -2;
  filter: blur(5px) brightness(0.5);
}

.hero-title {
  font-size: 4.5rem;
  font-weight: 700;
  margin-bottom: 20px;
  background: linear-gradient(45deg, #fff, #8f94fb);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
  from {
      text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
  }
  to {
      text-shadow: 0 0 20px rgba(143, 148, 251, 0.8), 0 0 30px rgba(143, 148, 251, 0.6);
  }
}

.hero-subtitle {
  font-size: 1.5rem;
  margin-bottom: 30px;
  opacity: 0.9;
}

.hero-buttons .btn {
  padding: 12px 30px;
  border-radius: 50px;
  font-weight: 500;
  letter-spacing: 1px;
}

.social-icons {
  display: flex;
  justify-content: center;
  gap: 20px;
}

.social-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--glass-color);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  border: 1px solid var(--glass-border);
  transition: var(--transition);
}

.social-icon:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-5px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* Sections */
.section {
  padding: 100px 0;
  position: relative;
}

.section-title {
  text-align: center;
  margin-bottom: 60px;
}

.section-title h2 {
  font-size: 2.5rem;
  margin-bottom: 15px;
}

.underline {
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  margin: 0 auto;
  border-radius: 2px;
}

/* About Section */
.profile-card {
  text-align: center;
  padding: 30px;
}

.profile-img {
  width: 250px;
  height: 250px;
  margin: 0 auto 20px;
  border-radius: 50%;
  overflow: hidden;
  border: 5px solid var(--glass-border);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.profile-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-content h3 {
  font-size: 1.8rem;
  margin-bottom: 20px;
}

.about-content p {
  margin-bottom: 20px;
  opacity: 0.9;
}

.info-card {
  padding: 15px;
  margin-bottom: 15px;
  display: flex;
  align-items: center;
}

.info-card i {
  font-size: 1.2rem;
  margin-right: 10px;
  color: var(--primary-color);
}

/* Skills Section */
.skill-category {
  padding: 25px;
}

.skill-category h4 {
  margin-bottom: 20px;
  font-size: 1.3rem;
  color: var(--primary-color);
}

.skill-item {
  margin-bottom: 20px;
}

.skill-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: 5px;
}

.skill-info span:first-child {
  font-weight: 500;
}

/* Education Section */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-bottom: 30px;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 100%;
  background: var(--glass-border);
}

.timeline-item {
  position: relative;
  margin-bottom: 30px;
  width: calc(50% - 30px);
  clear: both;
}

.timeline-item:nth-child(odd) {
  float: left;
  clear: right;
}

.timeline-item:nth-child(even) {
  float: right;
  clear: left;
}

.timeline-date {
  position: absolute;
  top: 10px;
  width: 120px;
  padding: 5px 10px;
  background: var(--primary-color);
  color: white;
  border-radius: 20px;
  font-size: 0.8rem;
  text-align: center;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.timeline-item:nth-child(odd) .timeline-date {
  right: -150px;
}

.timeline-item:nth-child(even) .timeline-date {
  left: -150px;
}

.timeline-content {
  padding: 20px;
}

.timeline-content h4 {
  font-size: 1.2rem;
  margin-bottom: 5px;
}

.timeline-content h5 {
  font-size: 1rem;
  margin-bottom: 5px;
  color: rgba(255, 255, 255, 0.8);
}

/* Clearfix for the timeline */
.timeline::after {
  content: '';
  display: table;
  clear: both;
}

/* Experience Section */
.experience-section {
  clear: both;
  padding-top: 30px;
}

.experience-item {
  max-width: 800px;
  margin: 0 auto;
  padding: 30px;
  position: relative;
}

.exp-header {
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.exp-header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 3px;
  background: var(--primary-color);
}

.exp-header h4 {
  font-size: 1.3rem;
  margin-bottom: 5px;
}

.exp-date {
  display: inline-block;
  padding: 3px 10px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  font-size: 0.8rem;
  margin-bottom: 5px;
}

.exp-header h5 {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 5px;
}

.exp-details {
  padding-left: 20px;
}

.exp-details li {
  margin-bottom: 8px;
  position: relative;
}

.exp-details li::before {
  content: '▹';
  position: absolute;
  left: -20px;
  color: var(--primary-color);
}

/* Projects Section */
.project-filters {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 30px;
}

.btn-filter {
  padding: 8px 20px;
  background: transparent;
  border: 1px solid var(--glass-border);
  color: var(--text-color);
  border-radius: 50px;
  cursor: pointer;
  transition: var(--transition);
}

.btn-filter:hover,
.btn-filter.active {
  background: var(--primary-color);
  border-color: var(--primary-color);
}

.project-card {
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.project-img {
  overflow: hidden;
  border-radius: 10px 10px 0 0;
}

.project-img img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.project-content {
  padding: 20px;
}

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

.project-content p {
  margin-bottom: 15px;
  opacity: 0.8;
  font-size: 0.9rem;
}

.project-content .btn {
  padding: 8px 20px;
  font-size: 0.9rem;
}
/* Certificates Section */
.certificates-section {
  padding: 50px 0;
  background-color: var(--background-color); /* match your overall theme */
}

.section-title h2 {
  font-size: 2.5em;
  text-align: center;
  color: var(--text-color);
  text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.1);
}

.underline {
  width: 50px;
  height: 5px;
  background-color: var(--primary-color);
  margin: 10px auto;
}

.certificate-card {
  position: relative;
  overflow: hidden;
  background: transparent;
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  transition: var(--transition);
  margin-bottom: 30px;
}

.certificate-card:hover {
  background: var(--primary-color);
  border-color: var(--primary-color);
  transform: translateY(-5px);
}

.certificate-card h4 {
  margin-top: 15px;
  font-size: 1.2rem;
  color: var(--text-color);
  text-align: center;
}

.certificate-card p {
  text-align: center;
  margin: 10px 0;
  opacity: 0.8;
  font-size: 0.9rem;
  color: var(--text-color);
}

.certificate-image {
  width: 100%;
  height: auto; /* allow natural height */
  object-fit: contain; /* show the full image without cropping */
  border-radius: 10px 10px 0 0;
  transition: transform 0.5s ease;
  background: #fff; /* optional: in case the image has transparency */
}


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

.certificate-card .btn {
  display: block;
  margin: 15px auto;
  padding: 8px 20px;
  font-size: 0.9rem;
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  background: transparent;
  color: var(--text-color);
  transition: var(--transition);
  text-align: center;
  text-decoration: none;
}

.certificate-card .btn:hover {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: #fff;
}

/* Responsive Design */
@media (max-width: 768px) {
  .col-md-6 {
    flex: 0 0 100%;
    max-width: 100%;
  }
}


/* Contact Section */
.contact-info {
  height: 100%;
  padding: 30px;
}

.contact-info h4 {
  margin-bottom: 30px;
  font-size: 1.5rem;
}

.info-item {
  display: flex;
  align-items: center;
  margin-bottom: 20px;
}

.info-item i {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin-right: 15px;
  color: var(--primary-color);
}

.info-item h5 {
  font-size: 1rem;
  margin-bottom: 5px;
}

.contact-form {
  padding: 30px;
}

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

.form-control {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--glass-border);
  color: var(--text-color);
  border-radius: 5px;
  padding: 12px 15px;
  width: 100%;
  transition: var(--transition);
}

.form-control:focus {
  background: rgba(255, 255, 255, 0.2);
  border-color: var(--primary-color);
  box-shadow: 0 0 10px rgba(78, 84, 200, 0.3);
  outline: none;
}

.form-control::placeholder {
  color: rgba(255, 255, 255, 0.7);
}

textarea.form-control {
  resize: none;
}

/* Footer */
.glass-footer {
  background: var(--glass-color);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-top: 1px solid var(--glass-border);
  padding: 60px 0 20px;
}

.footer-about {
  margin-bottom: 30px;
}

.footer-logo {
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 1.8rem;
  margin-bottom: 15px;
  display: inline-block;
  background: linear-gradient(45deg, #fff, #4e54c8);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.footer-links h5,
.footer-contact h5,
.footer-social h5 {
  font-size: 1.2rem;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.footer-links h5::after,
.footer-contact h5::after,
.footer-social h5::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--primary-color);
}

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

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  opacity: 0.8;
  transition: var(--transition);
}

.footer-links a:hover {
  opacity: 1;
  padding-left: 5px;
}

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

.footer-contact li {
  margin-bottom: 15px;
  display: flex;
  align-items: center;
}

.footer-contact i {
  margin-right: 10px;
  color: var(--primary-color);
  width: 20px;
  text-align: center;
}

.footer-social .social-icons {
  justify-content: flex-start;
  gap: 15px;
}

.footer-bottom {
  margin-top: 50px;
  padding-top: 20px;
  border-top: 1px solid var(--glass-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.back-to-top {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary-color);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 15px rgba(78, 84, 200, 0.4);
}

/* Responsive Styles */
@media (max-width: 991.98px) {
  .hero-title {
      font-size: 3.5rem;
  }
  
  .section {
      padding: 80px 0;
  }
  
  .about-content {
      margin-top: 30px;
  }
  
  .timeline::before {
      left: 30px;
  }
  
  .timeline-item {
      width: 100%;
      padding-left: 70px;
  }
  
  .timeline-item:nth-child(odd),
  .timeline-item:nth-child(even) {
      float: none;
      clear: none;
  }
  
  .timeline-date {
      left: 0;
      right: auto;
      top: 0;
  }
}

@media (max-width: 767.98px) {
  .hero-title {
      font-size: 2.8rem;
  }
  
  .hero-subtitle {
      font-size: 1.2rem;
  }
  
  .section-title h2 {
      font-size: 2rem;
  }
  
  .footer-links,
  .footer-contact,
  .footer-social {
      margin-bottom: 30px;
  }
  
  .footer-bottom {
      flex-direction: column;
      text-align: center;
  }
  
  .back-to-top {
      margin-top: 20px;
  }
}

@media (max-width: 575.98px) {
  .hero-title {
      font-size: 2.2rem;
  }
  
  .hero-buttons .btn {
      display: block;
      width: 100%;
      margin-bottom: 15px;
  }
  
  .hero-buttons .btn:last-child {
      margin-bottom: 0;
  }
  
  .section {
      padding: 60px 0;
  }
  
  .profile-img {
      width: 200px;
      height: 200px;
  }
}