/* Reset & Base Styles */
:root {
  --primary-color: #3498db;
  --primary-dark: #2980b9;
  --secondary-color: #2c3e50;
  --accent-color: #e74c3c;
  --light-color: #f9f9f9;
  --dark-color: #2c6388;
  --card-bg: #ffffff;
  --text-color: #1b1b1b;
  --text-light: #181717;
  --border-color: #e0e0e0;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

[data-theme="dark"] {
  --light-color: #3498db;
  --dark-color: #1a1a1a;
  --card-bg: #2d2d2d;
  --text-color: #ffffff;
  --text-light: #b0b0b0;
  --border-color: #404040;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

* {
  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-color: var(--light-color);
  transition: var(--transition);
}

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

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

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 20px;
}

.logo {
  font-family: "Montserrat", sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary-color);
  text-decoration: none;
}

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

.nav ul {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav a {
  color: var(--text-color);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 0;
  position: relative;
  transition: var(--transition);
}

.nav a:hover,
.nav a.active {
  color: var(--primary-color);
}

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

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

/* Theme Toggle */
.theme-toggle {
  position: relative;
  width: 60px;
  height: 30px;
  background: var(--border-color);
  border-radius: 15px;
  cursor: pointer;
  margin-left: 1rem;
}

.theme-toggle i {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
  color: var(--text-color);
}

.theme-toggle .fa-moon {
  left: 8px;
}

.theme-toggle .fa-sun {
  right: 8px;
}

.toggle-ball {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 24px;
  height: 24px;
  background: var(--primary-color);
  border-radius: 50%;
  transition: var(--transition);
}

[data-theme="dark"] .toggle-ball {
  transform: translateX(30px);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--text-color);
  transition: var(--transition);
}

/* Hero Section */
.hero-section {
  padding: 120px 0 80px;
  background: linear-gradient(
    135deg,
    var(--light-color) 0%,
    var(--dark-color) 100%
  );
  position: relative;
  overflow: hidden;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-text h1 {
  font-family: "Montserrat", sans-serif;
  font-size: 3rem;
  line-height: 1.2;
  margin-bottom: 1rem;
}

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

.hero-text h2 {
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--text-light);
  margin-bottom: 1.5rem;
  min-height: 2.5rem;
}

.hero-text p {
  font-size: 1.1rem;
  color: var(--text-light);
  margin-bottom: 2rem;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  margin-bottom: 3rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 2rem;
  border-radius: 30px;
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

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

.btn-secondary:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-2px);
}

.hero-stats {
  display: flex;
  gap: 2rem;
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-family: "Montserrat", sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-color);
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-light);
}

/* Oval Frame for Hero Image */
.hero-image {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.image-container {
  position: relative;
  width: 350px;
  height: 450px;
  margin: 0 auto;
}

.image-frame {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50% 50% 45% 45% / 40% 40% 60% 60%;
  overflow: hidden;
  border: 8px solid var(--primary-color);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15),
    0 0 0 15px rgba(255, 255, 255, 0.1), inset 0 0 20px rgba(0, 0, 0, 0.1);
  transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.1) 0%,
    rgba(0, 0, 0, 0.1) 100%
  );
}

.image-frame:hover {
  transform: scale(1.02);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2),
    0 0 0 15px rgba(var(--primary-color-rgb), 0.15),
    inset 0 0 30px rgba(0, 0, 0, 0.15);
}

.image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 25%;
  transition: transform 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.image-frame:hover img {
  transform: scale(1.05);
}

/* Cybersecurity Badge */
.image-badge {
  position: absolute;
  bottom: 40px;
  right: -15px;
  background: linear-gradient(135deg, var(--accent-color), #ff416c);
  color: white;
  padding: 0.8rem 1.5rem;
  border-radius: 30px;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-weight: 600;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2), 0 4px 8px rgba(0, 0, 0, 0.1);
  z-index: 2;
  animation: float 3s ease-in-out infinite;
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.image-badge i {
  font-size: 1.2rem;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

/* Decorative Elements */
.image-decoration {
  position: absolute;
  width: 100%;
  height: 100%;
  z-index: -1;
}

.image-decoration::before,
.image-decoration::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  background: var(--primary-color);
  opacity: 0.1;
}

.image-decoration::before {
  width: 400px;
  height: 400px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: pulse 4s ease-in-out infinite;
}

.image-decoration::after {
  width: 450px;
  height: 450px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: pulse 4s ease-in-out infinite 0.5s;
}

/* Floating Animation for Badge */
@keyframes float {
  0%,
  100% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-10px) rotate(2deg);
  }
}

/* Pulse Animation for Background Circles */
@keyframes pulse {
  0%,
  100% {
    opacity: 0.05;
    transform: translate(-50%, -50%) scale(1);
  }
  50% {
    opacity: 0.1;
    transform: translate(-50%, -50%) scale(1.05);
  }
}

/* Section Styles */
section {
  padding: 80px 0;
}

.section-title {
  font-family: "Montserrat", sans-serif;
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 1rem;
  color: var(--text-color);
}

.section-subtitle {
  text-align: center;
  color: var(--text-light);
  margin-bottom: 3rem;
  font-size: 1.1rem;
}

/* Responsive Design for Hero Section */
@media (max-width: 992px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
  }

  .hero-image {
    order: -1;
  }

  .image-container {
    width: 300px;
    height: 400px;
  }

  .image-badge {
    right: 0;
    left: 0;
    margin: 0 auto;
    width: fit-content;
  }
}

@media (max-width: 768px) {
  .hero-text h1 {
    font-size: 2.5rem;
  }

  .hero-text h2 {
    font-size: 1.3rem;
  }

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

  .btn {
    width: 100%;
    max-width: 250px;
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
    flex-wrap: wrap;
  }

  .image-container {
    width: 280px;
    height: 380px;
  }
}

@media (max-width: 576px) {
  .hero-section {
    padding: 100px 0 60px;
  }

  .hero-text h1 {
    font-size: 2.2rem;
  }

  .hero-text h2 {
    font-size: 1.2rem;
  }

  .image-container {
    width: 250px;
    height: 350px;
  }

  .image-badge {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
  }
}

/* Add this to your existing CSS variables if not present */
:root {
  --primary-color-rgb: 52, 152, 219; /* RGB values for primary color */
}

/* Section Styles */
section {
  padding: 80px 0;
}

.section-title {
  font-family: "Montserrat", sans-serif;
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 1rem;
  color: var(--text-color);
}

.section-subtitle {
  text-align: center;
  color: var(--text-light);
  margin-bottom: 3rem;
  font-size: 1.1rem;
}

/* About Section */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  margin-top: 3rem;
}

.timeline {
  margin-top: 2rem;
}

.timeline-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  position: relative;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 30px;
  bottom: -2rem;
  width: 2px;
  background: var(--border-color);
}

.timeline-item:last-child::before {
  display: none;
}

.timeline-icon {
  width: 24px;
  height: 24px;
  background: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
  z-index: 1;
}

.timeline-content h4 {
  font-size: 1.1rem;
  margin-bottom: 0.3rem;
}

.timeline-date {
  display: block;
  color: var(--primary-color);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

/* Skills Section */
.skills-grid {
  display: grid;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.skill-category h4 {
  color: var(--primary-color);
  margin-bottom: 0.8rem;
}

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

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

/* Projects Section */
.projects-section {
  background: var(--dark-color);
}

.projects-filter {
  margin-bottom: 2rem;
}

.filter-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.filter-btn {
  padding: 0.5rem 1.5rem;
  background: transparent;
  border: 2px solid var(--border-color);
  border-radius: 30px;
  color: var(--text-color);
  cursor: pointer;
  transition: var(--transition);
  font-weight: 500;
}

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

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

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

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

.project-image {
  position: relative;
  height: 200px;
  overflow: hidden;
}

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

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

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}

.project-card:hover .project-overlay {
  opacity: 1;
}

.view-project {
  padding: 0.8rem 1.5rem;
  background: var(--primary-color);
  color: white;
  text-decoration: none;
  border-radius: 30px;
  font-weight: 500;
  transition: var(--transition);
}

.view-project:hover {
  background: var(--primary-dark);
}

.project-info {
  padding: 1.5rem;
}

.project-info h3 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: var(--text-color);
}

.project-description {
  color: var(--text-light);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.project-tags span {
  background: var(--border-color);
  color: var(--text-color);
  padding: 0.3rem 0.8rem;
  border-radius: 15px;
  font-size: 0.8rem;
  font-weight: 500;
}

/* Certifications Section */
.certifications-section {
  background: var(--light-color);
  padding: 80px 0;
}

.certifications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.cert-card {
  background: var(--card-bg);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border-color);
}

.cert-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
  border-color: var(--primary-color);
}

.cert-image-container {
  position: relative;
  height: 200px;
  overflow: hidden;
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.cert-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.cert-card:hover .cert-image {
  transform: scale(1.05);
}

.cert-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.cert-card:hover .cert-overlay {
  opacity: 1;
}

.view-cert-btn {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 0.8rem 1.5rem;
  border-radius: 30px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: transform 0.3s ease, background 0.3s ease;
}

.view-cert-btn:hover {
  background: var(--primary-dark);
  transform: scale(1.05);
}

.cert-details {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.cert-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.cert-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--primary-dark)
  );
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.3rem;
  box-shadow: 0 4px 12px rgba(var(--primary-color-rgb), 0.2);
}

.cert-header h3 {
  font-size: 1.2rem;
  margin-bottom: 0.3rem;
  color: var(--text-color);
}

.cert-issuer {
  color: var(--primary-color);
  font-weight: 600;
  font-size: 0.9rem;
}

.cert-description {
  color: var(--text-light);
  font-size: 0.9rem;
  line-height: 1.5;
  margin-bottom: 1.5rem;
  flex: 1;
}

.cert-meta {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  padding: 0.8rem;
  background: var(--light-color);
  border-radius: 8px;
  font-size: 0.85rem;
}

.cert-date,
.cert-id {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-color);
}

.cert-date i,
.cert-id i {
  color: var(--primary-color);
}

.cert-actions {
  display: flex;
  gap: 0.8rem;
  margin-top: auto;
}

.cert-action-btn {
  flex: 1;
  padding: 0.7rem 1rem;
  border-radius: 6px;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  text-align: center;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.view-image-btn {
  background: var(--primary-color);
  color: white;
  border: 2px solid var(--primary-color);
}

.view-image-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

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

.download-btn:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-2px);
}

.verify-btn {
  background: var(--accent-color);
  color: white;
  border: 2px solid var(--accent-color);
}

.verify-btn:hover {
  background: #c0392b;
  transform: translateY(-2px);
}

/* Certificate Modal */
.cert-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.cert-modal.active {
  display: flex;
  animation: fadeIn 0.3s ease;
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(5px);
}

.modal-container {
  position: relative;
  background: var(--card-bg);
  border-radius: 15px;
  width: 100%;
  max-width: 900px;
  max-height: 90vh;
  overflow: hidden;
  z-index: 1;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
  animation: modalSlideUp 0.4s ease;
}

@keyframes modalSlideUp {
  from {
    opacity: 0;
    transform: translateY(50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal-close {
  position: absolute;
  top: 15px;
  right: 15px;
  width: 40px;
  height: 40px;
  background: rgba(0, 0, 0, 0.5);
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 1.5rem;
  cursor: pointer;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.modal-close:hover {
  background: rgba(0, 0, 0, 0.7);
  transform: rotate(90deg);
}

.modal-image-container {
  position: relative;
  padding: 2rem;
  background: #f8f9fa;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 400px;
}

.modal-cert-image {
  max-width: 100%;
  max-height: 500px;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.modal-nav {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  padding: 0 2rem;
  transform: translateY(-50%);
}

.nav-btn {
  width: 50px;
  height: 50px;
  background: rgba(0, 0, 0, 0.6);
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.nav-btn:hover {
  background: rgba(0, 0, 0, 0.8);
  transform: scale(1.1);
}

.modal-info {
  padding: 2rem;
  background: var(--card-bg);
}

.modal-title {
  font-size: 1.8rem;
  margin-bottom: 0.5rem;
  color: var(--text-color);
  font-family: "Montserrat", sans-serif;
}

.modal-meta {
  display: flex;
  gap: 2rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.modal-issuer {
  color: var(--primary-color);
  font-weight: 600;
  font-size: 1.1rem;
}

.modal-date {
  color: var(--text-light);
  font-size: 0.95rem;
}

.modal-actions {
  display: flex;
  gap: 1rem;
}

.modal-action-btn {
  flex: 1;
  padding: 0.8rem 1.5rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  text-align: center;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  cursor: pointer;
  border: none;
  font-family: inherit;
}

.download-modal-btn {
  background: var(--primary-color);
  color: white;
}

.download-modal-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

.verify-modal-btn {
  background: var(--accent-color);
  color: white;
}

.verify-modal-btn:hover {
  background: #c0392b;
  transform: translateY(-2px);
}

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

.close-modal-btn:hover {
  background: var(--border-color);
  transform: translateY(-2px);
}

/* Responsive Design */
@media (max-width: 992px) {
  .certifications-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }
}

@media (max-width: 768px) {
  .certifications-grid {
    grid-template-columns: 1fr;
  }

  .cert-meta {
    flex-direction: column;
    gap: 0.5rem;
  }

  .modal-container {
    max-height: 95vh;
  }

  .modal-image-container {
    padding: 1rem;
    min-height: 300px;
  }

  .modal-cert-image {
    max-height: 400px;
  }

  .modal-actions {
    flex-direction: column;
  }
}

@media (max-width: 576px) {
  .cert-card {
    margin: 0 auto;
    max-width: 100%;
  }

  .cert-image-container {
    height: 180px;
  }

  .cert-actions {
    flex-direction: column;
  }

  .modal-nav {
    padding: 0 1rem;
  }

  .nav-btn {
    width: 40px;
    height: 40px;
  }
}

/* Articles Section */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

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

.article-card:hover {
  transform: translateY(-5px);
}

.article-image {
  height: 200px;
  overflow: hidden;
}

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

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

.article-content {
  padding: 1.5rem;
}

.article-meta {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.article-category {
  background: var(--primary-color);
  color: white;
  padding: 0.3rem 0.8rem;
  border-radius: 15px;
  font-weight: 500;
}

.article-date {
  color: var(--text-light);
}

.article-content h3 {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  color: var(--text-color);
}

.article-content p {
  color: var(--text-light);
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

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

.article-link:hover {
  gap: 1rem;
}

/* Contact Section */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  margin-top: 3rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 2rem;
}

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

.contact-details h3 {
  font-size: 1.1rem;
  margin-bottom: 0.3rem;
  color: var(--text-color);
}

.contact-details p {
  color: var(--text-light);
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

.social-link {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-color);
  text-decoration: none;
  transition: var(--transition);
}

.social-link:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-3px);
}

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

.contact-form .form-group:first-of-type {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 2px solid var(--border-color);
  border-radius: 5px;
  background: transparent;
  color: var(--text-color);
  font-family: "Poppins", sans-serif;
  font-size: 1rem;
  transition: var(--transition);
}

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

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

/* Footer */
.footer {
  background: var(--dark-color);
  color: var(--text-color);
  padding: 60px 0 30px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer h3 {
  font-size: 1.3rem;
  margin-bottom: 1.5rem;
  color: white;
}

.footer p {
  color: var(--text-light);
  line-height: 1.8;
}

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

.footer-links li {
  margin-bottom: 0.8rem;
}

.footer-links a {
  color: var(--text-light);
  text-decoration: none;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--primary-color);
  padding-left: 5px;
}

.footer-contact p {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-light);
}

.footer-note {
  margin-top: 0.5rem;
  font-size: 0.9rem;
}

.footer-note .fa-heart {
  color: var(--accent-color);
}

/* Animations */
.animate-slide-up {
  opacity: 0;
  transform: translateY(30px);
  animation: slideUp 0.6s ease forwards;
}

.animate-slide-up.delay-1 {
  animation-delay: 0.2s;
}

.animate-slide-up.delay-2 {
  animation-delay: 0.4s;
}

.animate-slide-up.delay-3 {
  animation-delay: 0.6s;
}

.animate-slide-up.delay-4 {
  animation-delay: 0.8s;
}

.animate-fade-in {
  opacity: 0;
  animation: fadeIn 0.6s ease forwards;
}

.animate-fade-in.delay-1 {
  animation-delay: 0.2s;
}

.animate-fade-in.delay-2 {
  animation-delay: 0.4s;
}

.animate-fade-in.delay-3 {
  animation-delay: 0.6s;
}

@keyframes slideUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  to {
    opacity: 1;
  }
}

/* Responsive Styles */
@media (max-width: 992px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
  }

  .about-content {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .contact-content {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

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

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

  .image-badge {
    right: 0;
    left: 0;
    margin: 0 auto;
    width: fit-content;
  }
}

@media (max-width: 768px) {
  .nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .nav.active {
    display: block;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--card-bg);
    padding: 1rem;
    box-shadow: var(--shadow);
  }

  .nav.active ul {
    flex-direction: column;
    gap: 1rem;
  }

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

  .section-title {
    font-size: 2rem;
  }

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

  .contact-form .form-group:first-of-type {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 576px) {
  .container {
    padding: 0 15px;
  }

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

  .hero-text h2 {
    font-size: 1.2rem;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .btn {
    justify-content: center;
  }

  .filter-buttons {
    gap: 0.5rem;
  }

  .filter-btn {
    padding: 0.4rem 1rem;
    font-size: 0.9rem;
  }
}