:root {
  --bg-color: #f8f9fa8d;
  --text-color: #333;
  --card-bg: #ffffff;
  --nav-bg: #ffffff;
  --shadow: rgba(0, 0, 0, 0.1);
  --primary: #d16af4;
  --secondary: #542a62;
  --accent: #f1c40f;
  --muted: #666;
  --border: #ddd;
  --particle-color: #3498db;
  --particle-line-color: #3498db;
  --footer-color: #804096b7;
}

[data-theme="dark"] {
  --bg-color: #1a1a1a89;
  --text-color: #e0e0e0;
  --card-bg: #2d2d2d;
  --nav-bg: #2d2d2d;
  --shadow: rgba(0, 0, 0, 0.3);
  --primary: #24f4f6;
  --secondary: #24f4f6;
  --accent: #ffb74d;
  --muted: #b0b0b0;
  --border: #444;
  --particle-color: #542a62;
  --particle-line-color: #542a62;
  --footer-color: #24f4f6;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  min-height: 100vh;
}

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

/* Particles Background */
#particles-js {
  position: fixed;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: -1;
  background: var(--bg-color);
}

/* Ensure content stays above particles */
body {
  position: relative;
  z-index: 1;
}

/* Navigation */
.navbar {
  background-color: var(--nav-bg);
  box-shadow: 0 2px 10px var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding-left: 2rem;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.nav-logo a {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--secondary);
  text-decoration: none;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
  position: relative;
}

.nav-link:hover {
  color: var(--primary);
}

.nav-link.active {
  color: var(--primary);
  font-weight: 600;
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--primary);
}

.theme-toggle {
  background: none;
  border: none;
  color: var(--text-color);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 50%;
  transition: background-color 0.3s;
  padding-right: 2rem;
}

.theme-toggle:hover {
  background-color: var(--border);
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.bar {
  width: 25px;
  height: 3px;
  background-color: var(--text-color);
  margin: 3px 0;
  transition: 0.3s;
}

/* Hero Section */
.hero {
  padding: 5rem 0;
  background-color: var(--bg-color);
  color: var(--text-color);
  position: relative;
}

.hero-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 3rem;
}

.hero-content {
  flex: 1;
  padding-left: 2rem;
}

.hero-content h1 {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.hero-content h1 span {
  color: var(--primary);
}

.hero-content p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  max-width: 600px;
  color: var(--muted);
}

.hero-buttons {
  display: flex;
  gap: 1rem;
}

.btn {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s;
  border: none;
  cursor: pointer;
}

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

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

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

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

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

.hero-image img {
  width: 320px;
  height: 320px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--primary);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.hero-image img:hover {
  transform: scale(1.05);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

/* Sections */
section {
  padding: 5rem 0;
  background-color: var(--bg-color);
  position: relative;
  z-index: 2;
}

h2 {
  font-size: 2.5rem;
  margin-bottom: 2rem;
  text-align: center;
  color: var(--secondary);
}

/* Introduction Section */
.intro p {
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
  text-align: center;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.intro-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.intro-card {
  background-color: var(--card-bg);
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 5px 15px var(--shadow);
  transition: transform 0.3s;
  border: 1px solid var(--border);
}

.intro-card:hover {
  transform: translateY(-10px);
}

.intro-card h3 {
  color: var(--primary);
  margin-bottom: 1rem;
}

.read-more {
  display: inline-flex;
  align-items: center;
  margin-top: 1rem;
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}

.read-more i {
  margin-left: 0.5rem;
  transition: transform 0.3s;
}

.read-more:hover i {
  transform: translateX(5px);
}

/* Projects Section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.project-card {
  background-color: var(--card-bg);
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 5px 15px var(--shadow);
  text-align: center;
  transition: transform 0.3s;
  border: 1px solid var(--border);
}

.project-card:hover {
  transform: translateY(-10px);
}

.project-icon {
  font-size: 3rem;
  color: var(--primary);
  margin-bottom: 1.5rem;
}

.project-card h3 {
  margin-bottom: 1rem;
  color: var(--secondary);
}

.project-card p {
  margin-bottom: 1.5rem;
  color: var(--muted);
}

.project-link {
  display: inline-block;
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  border-bottom: 2px solid transparent;
  transition: border-color 0.3s;
}

.project-link:hover {
  border-color: var(--primary);
}

.loading {
  text-align: center;
  grid-column: 1 / -1;
  padding: 2rem;
  color: var(--muted);
}

/* Skills Section */
.skills-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.skill-category h3 {
  text-align: left;
  margin-bottom: 1rem;
  color: var(--secondary);
}

.skill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.skill-tag {
  background-color: var(--card-bg);
  color: var(--primary);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
  border: 1px solid var(--border);
}

/* Footer */
.footer {
  background-color: var(--footer-color);
  color: #000000;
  padding: 3rem 0 1rem;
  position: relative;
  z-index: 2;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.footer-info h3 {
  margin-bottom: 0.5rem;
  color: black;
}

.footer-info p {
  color: black;
}

.footer-links {
  display: flex;
  gap: 1rem;
}

.footer-links a {
  color: black;
  font-size: 1.5rem;
  transition: color 0.3s;
}

.footer-links a:hover {
  color: var(--primary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  padding-top: 1.5rem;
  border-top: 1px solid #000000;
  font-size: 0.9rem;
  color: black;
}

/* About Page */
.page-header {
  padding: 3rem 0;
  background-color: var(--card-bg);
  color: var(--text-color);
  text-align: center;
  border-bottom: 1px solid var(--border);
  position: relative;
  z-index: 2;
}

.page-header h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--secondary);
}

.about-content {
  background-color: var(--bg-color);
  position: relative;
  z-index: 2;
}

.about-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 3rem;
  align-items: start;
}

.about-text h2 {
  text-align: left;
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.about-text h2:first-of-type {
  margin-top: 0;
}

.about-text p {
  margin-bottom: 1.5rem;
}

.education {
  margin-top: 2rem;
}

.education h3 {
  color: var(--secondary);
  margin-bottom: 1rem;
}

.education-item {
  background-color: var(--card-bg);
  padding: 1.5rem;
  border-radius: 10px;
  margin-bottom: 1rem;
  border: 1px solid var(--border);
}

.education-item h4 {
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.date {
  color: var(--muted);
  font-style: italic;
}

.about-image {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.about-profile {
  width: 380px;
  height: 380px;
  border-radius: 20px;
  object-fit: cover;
  border: 4px solid var(--primary);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.about-profile:hover {
  transform: scale(1.03);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.about-links {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  width: 100%;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.5rem;
  background-color: var(--card-bg);
  border-radius: 5px;
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  transition: all 0.3s;
  border: 1px solid var(--border);
}

.social-link:hover {
  background-color: var(--primary);
  color: white;
}

/* Interests Section */
.interests-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.interest-card {
  background-color: var(--card-bg);
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 5px 15px var(--shadow);
  text-align: center;
  transition: transform 0.3s;
  border: 1px solid var(--border);
}

.interest-card:hover {
  transform: translateY(-10px);
}

.interest-card i {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 1.5rem;
}

.interest-card h3 {
  margin-bottom: 1rem;
  color: var(--secondary);
}

/* Contact Page */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.contact-info h2 {
  text-align: left;
}

.contact-info > p {
  margin-bottom: 2rem;
  color: var(--muted);
}

.contact-details {
  margin-bottom: 2rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.contact-item i {
  font-size: 1.5rem;
  color: var(--primary);
  margin-top: 0.2rem;
}

.contact-item h3 {
  margin-bottom: 0.3rem;
  color: var(--secondary);
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.5rem;
  background-color: var(--card-bg);
  border-radius: 5px;
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  transition: all 0.3s;
  border: 1px solid var(--border);
}

.social-btn:hover {
  background-color: var(--primary);
  color: white;
}

.contact-form {
  background-color: var(--card-bg);
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 5px 15px var(--shadow);
  border: 1px solid var(--border);
}

.contact-form h2 {
  text-align: left;
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--secondary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.8rem;
  border: 1px solid var(--border);
  border-radius: 5px;
  font-size: 1rem;
  transition: border-color 0.3s;
  background-color: var(--bg-color);
  color: var(--text-color);
}

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

/* Additional styles specific to the certificates page */
.certificate-hero {
  padding: 4rem 0;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: black;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.certificate-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path d="M0,0 L100,0 L100,100 Z" fill="rgba(255,255,255,0.1)"/></svg>');
  background-size: cover;
}

.certificate-hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  position: relative;
  z-index: 2;
}

.certificate-hero p {
  font-size: 1.2rem;
  max-width: 600px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
  opacity: 0.9;
}

.certificates-section {
  padding: 5rem 0;
  position: relative;
  z-index: 2;
  background-color: var(--bg-color);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 3rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.section-header h2 {
  font-size: 2.5rem;
  color: var(--secondary);
  margin: 0;
  text-align: left;
}

.filter-controls {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.filter-btn {
  background-color: var(--card-bg);
  border: 1px solid var(--border);
  color: var(--text-color);
  padding: 0.5rem 1rem;
  border-radius: 25px;
  cursor: pointer;
  transition: all 0.3s;
  font-weight: 500;
}

.filter-btn:hover,
.filter-btn.active {
  background-color: var(--primary);
  color: black;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.sort-controls {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.sort-btn {
  background-color: var(--card-bg);
  border: 1px solid var(--border);
  color: var(--text-color);
  padding: 0.5rem 1rem;
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

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

/* Modern Certificate Cards with Images */
.certificates-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
}

.certificate-card {
  background-color: var(--card-bg);
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 10px 30px var(--shadow);
  transition: transform 0.3s, box-shadow 0.3s;
  border: 1px solid var(--border);
  opacity: 0;
  transform: translateY(20px);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.certificate-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 35px var(--shadow);
}

.certificate-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-bottom: 3px solid var(--primary);
}

.certificate-content {
  padding: 1.5rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.certificate-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.certificate-badge {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: black;
  font-size: 1.2rem;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  flex-shrink: 0;
}

.certificate-title {
  flex-grow: 1;
  margin-left: 1rem;
}

.certificate-category {
  display: inline-block;
  background-color: var(--primary);
  color: black;
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.certificate-card h3 {
  margin-bottom: 0.8rem;
  color: var(--secondary);
  font-size: 1.3rem;
  line-height: 1.3;
}

.certificate-card p {
  color: var(--muted);
  margin-bottom: 1rem;
  line-height: 1.5;
  flex-grow: 1;
}

.certificate-meta {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.certificate-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
}

.certificate-link {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.3s;
}

.certificate-link:hover {
  color: var(--secondary);
  transform: translateX(5px);
}

.certificate-rating {
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.fade-in {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s, transform 0.6s;
}

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3rem;
  color: var(--muted);
}

.empty-state i {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--border);
}

/* Modal for certificate preview */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  z-index: 1000;
  justify-content: center;
  align-items: center;
}

.modal-content {
  max-width: 90%;
  max-height: 90%;
  background-color: var(--card-bg);
  border-radius: 10px;
  overflow: hidden;
  position: relative;
}

.modal-image {
  width: 100%;
  height: auto;
  display: block;
}

.modal-close {
  position: absolute;
  top: 15px;
  right: 15px;
  background-color: rgba(0, 0, 0, 0.7);
  color: white;
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: background-color 0.3s;
}

.modal-close:hover {
  background-color: rgba(0, 0, 0, 0.9);
}

/* Responsive Design */
@media (max-width: 768px) {
  .certificate-hero h1 {
    font-size: 2.5rem;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .filter-controls {
    width: 100%;
    justify-content: flex-start;
  }

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

  .certificate-header {
    flex-direction: column;
  }

  .certificate-title {
    margin-left: 0;
    margin-top: 1rem;
  }
}

@media (max-width: 480px) {
  .certificate-hero {
    padding: 3rem 0;
  }

  .certificate-hero h1 {
    font-size: 2rem;
  }

  .section-header h2 {
    font-size: 2rem;
  }
}

/* Animations */
.intro-card,
.project-card,
.interest-card,
.certificate-card {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s, transform 0.6s;
}

.fade-in {
  opacity: 1;
  transform: translateY(0);
}

.project-meta {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.language,
.stars {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

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

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

  .footer-content {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }
}

@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background-color: var(--nav-bg);
    width: 100%;
    text-align: center;
    transition: 0.3s;
    box-shadow: 0 10px 27px var(--shadow);
    padding: 2rem 0;
    gap: 0;
  }

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

  .nav-link {
    display: block;
    padding: 1rem;
    width: 100%;
  }

  .nav-link.active::after {
    display: none;
  }

  .theme-toggle {
    margin: 1rem auto;
  }

  .hero-content h1 {
    font-size: 2.5rem;
  }

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

  .hero-image img {
    width: 280px;
    height: 280px;
  }

  .about-profile {
    width: 300px;
    height: 300px;
    margin: 0 auto;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-image img {
    width: 240px;
    height: 240px;
  }

  .about-profile {
    width: 260px;
    height: 260px;
  }

  .hero-content h1 {
    font-size: 2.8rem;
  }
}