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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: #333;
  overflow-x: hidden;
}

/* Navigation */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: 1rem 0;
  transition: all 0.3s ease;
}

nav.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 2rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.nav-links a {
  text-decoration: none;
  color: #333;
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
}

.nav-links a::after {
  content: "";
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -5px;
  left: 0;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  transition: width 0.3s ease;
}

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

/* Hero Section */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 2rem;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="white" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="white" opacity="0.1"/><circle cx="50" cy="10" r="0.5" fill="white" opacity="0.1"/><circle cx="90" cy="40" r="0.5" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-20px) rotate(180deg);
  }
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  max-width: 1200px;
  width: 100%;
  z-index: 2;
  position: relative;
}

.hero-content {
  color: white;
  animation: fadeInUp 1s ease;
}

.hero-image {
  display: flex;
  flex-direction: column;
  align-items: center;
  animation: fadeInUp 1s ease 0.2s both;
}

.profile-photo {
  width: 300px;
  height: 300px;
  border-radius: 50%;
  border: 6px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  margin-bottom: 2rem;
  position: relative;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 8rem;
  backdrop-filter: blur(10px);
}

.profile-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  border-radius: 50%;
}

.profile-photo::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    45deg,
    transparent,
    rgba(255, 255, 255, 0.1),
    transparent
  );
  transform: rotate(45deg);
  animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
  0% {
    transform: translateX(-100%) translateY(-100%) rotate(45deg);
  }
  50% {
    transform: translateX(0%) translateY(0%) rotate(45deg);
  }
  100% {
    transform: translateX(100%) translateY(100%) rotate(45deg);
  }
}

.certifications {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

.cert-badge {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 15px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: all 0.3s ease;
  min-width: 120px;
}

.cert-badge:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.cert-logo {
  width: 50px;
  height: 50px;
  margin-bottom: 0.5rem;
  border-radius: 8px;
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  color: #0078d4;
  font-size: 0.8rem;
  text-align: center;
  line-height: 1.2;
}

.cert-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: white;
  text-align: center;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: 1rem;
  font-weight: 700;
}

.hero .subtitle {
  font-size: clamp(1.2rem, 2.5vw, 1.5rem);
  margin-bottom: 2rem;
  opacity: 0.9;
}

.hero-stats {
  display: flex;
  gap: 2rem;
  margin-top: 2rem;
  justify-content: flex-start;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 2rem;
  font-weight: bold;
  display: block;
  color: rgba(255, 255, 255, 0.9);
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.8;
}

.cta-button {
  display: inline-block;
  padding: 1rem 2rem;
  background: rgba(255, 255, 255, 0.2);
  color: white;
  text-decoration: none;
  border-radius: 50px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  font-weight: 600;
}

.cta-button:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* Sections */
.section {
  padding: 5rem 0;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  text-align: center;
  margin-bottom: 3rem;
  position: relative;
}

.section-title::after {
  content: "";
  position: absolute;
  width: 80px;
  height: 4px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  border-radius: 2px;
}

/* About Section */
.about-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
  align-items: center;
  margin-top: 2rem;
}

.about-image {
  position: relative;
}

.about-image::before {
  content: "";
  position: absolute;
  top: 20px;
  left: 20px;
  right: -20px;
  bottom: -20px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 20px;
  z-index: -1;
}

.profile-placeholder {
  width: 100%;
  height: 400px;
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: #667eea;
  position: relative;
  z-index: 1;
}

.about-text {
  font-size: 1.1rem;
  line-height: 1.8;
  color: #555;
}

/* Skills Section */
.skills {
  background: #f8f9fa;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.skill-card {
  background: white;
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.skill-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.skill-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.skill-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: #667eea;
}

.skill-card h3 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: #333;
}

.skill-card p {
  color: #666;
  line-height: 1.6;
}

/* Experience Section */
.experience-timeline {
  position: relative;
  margin-top: 2rem;
}

.experience-timeline::before {
  content: "";
  position: absolute;
  left: 30px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.experience-item {
  position: relative;
  margin-bottom: 3rem;
  padding-left: 80px;
}

.experience-item::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 0;
  width: 20px;
  height: 20px;
  background: #667eea;
  border-radius: 50%;
  border: 4px solid white;
  box-shadow: 0 0 0 4px #667eea;
}

.experience-card {
  background: white;
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.experience-card:hover {
  transform: translateX(10px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

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

.experience-title {
  font-size: 1.3rem;
  font-weight: 600;
  color: #333;
}

.experience-company {
  color: #667eea;
  font-weight: 500;
}

.experience-date {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
}

.experience-description {
  color: #666;
  line-height: 1.6;
}

.experience-description ul {
  margin-left: 1rem;
  margin-top: 0.5rem;
}

.experience-description li {
  margin-bottom: 0.5rem;
}

/* Education & Certifications */
.education {
  background: #f8f9fa;
}

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

.education-card {
  background: white;
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.education-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.education-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.education-year {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  display: inline-block;
  margin-bottom: 1rem;
}

.education-title {
  font-size: 1.2rem;
  font-weight: 600;
  color: #333;
  margin-bottom: 0.5rem;
}

.education-description {
  color: #666;
  line-height: 1.6;
}

/* Contact Section */
.contact {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.contact-content {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
}

.contact-item {
  text-align: center;
  padding: 2rem;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 15px;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.contact-item:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-5px);
}

.contact-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.contact-item h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.contact-item a {
  color: white;
  text-decoration: none;
  transition: all 0.3s ease;
}

.contact-item a:hover {
  opacity: 0.8;
}

/* Footer */
footer {
  background: #2c3e50;
  color: white;
  text-align: center;
  padding: 2rem 0;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2rem;
  }

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

  .profile-photo {
    width: 250px;
    height: 250px;
    font-size: 6rem;
  }

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

  .about-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .experience-timeline::before {
    left: 15px;
  }

  .experience-item {
    padding-left: 50px;
  }

  .experience-item::before {
    left: 5px;
  }

  .experience-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease;
}

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

/* Scroll Progress Bar */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  z-index: 1001;
  transition: width 0.1s ease;
}
.contact-content {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
}
.contact-card {
  flex: 1 1 220px;
  max-width: 320px;
  min-width: 220px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 2px 12px rgba(102, 126, 234, 0.07);
  text-align: center;
  transition: box-shadow 0.3s;
}
.contact-card:hover {
  box-shadow: 0 6px 24px rgba(102, 126, 234, 0.13);
}
.about-content {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}
.about-card {
  background: rgba(245, 247, 250, 0.95);
  border-radius: 16px;
  box-shadow: 0 2px 12px rgba(102, 126, 234, 0.07);
  padding: 2rem 1.5rem;
  min-width: 260px;
  max-width: 340px;
  flex: 1 1 300px;
  margin-bottom: 0;
  transition: box-shadow 0.3s, transform 0.3s;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.about-card:hover {
  box-shadow: 0 6px 24px rgba(102, 126, 234, 0.13);
  transform: translateY(-6px) scale(1.03);
}
.about-heading {
  font-size: 1.3rem;
  margin-bottom: 0.7rem;
  color: #667eea;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.about-university {
  color: #764ba2;
  font-style: italic;
}
.about-list {
  list-style: none;
  padding-left: 0;
  margin: 0.5rem 0 0 0;
}
.about-list li {
  margin-bottom: 0.4rem;
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
@media (max-width: 900px) {
  .about-content {
    flex-direction: column;
    align-items: center;
  }
  .about-card {
    width: 100%;
    max-width: 500px;
    max-width: 500px;
  }