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

:root {
  --primary-color: #2563eb;
  --secondary-color: #1e40af;
  --accent-color: #3b82f6;
  --text-dark: #1f2937;
  --text-light: #6b7280;
  --bg-light: #f8fafc;
  --white: #ffffff;
  --shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  overflow-x: hidden;
}

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

/* 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 {
  box-shadow: var(--shadow);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-color);
}

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

.nav-menu a {
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
}

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

.nav-menu a::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width 0.3s ease;
}

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

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

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

/* Hero Section */
.hero {
  background: var(--gradient);
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.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="1" fill="white" opacity="0.1"/><circle cx="10" cy="90" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
}

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

.hero-text h1 {
  font-size: 3.5rem;
  color: white;
  margin-bottom: 1rem;
  opacity: 0;
  animation: fadeInUp 1s ease forwards;
}

.hero-text h2 {
  font-size: 1.5rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 2rem;
  opacity: 0;
  animation: fadeInUp 1s ease 0.2s forwards;
}

.hero-text p {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 2rem;
  opacity: 0;
  animation: fadeInUp 1s ease 0.4s forwards;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  opacity: 0;
  animation: fadeInUp 1s ease 0.6s forwards;
}

.btn {
  padding: 12px 30px;
  border: none;
  border-radius: 50px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
  background: transparent;
  color: white;
  border: 2px solid white;
}

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

.hero-image {
  text-align: center;
  opacity: 0;
  animation: fadeInUp 1s ease 0.8s forwards;
}

.profile-pic {
  width: 300px;
  height: 300px;
  border-radius: 50%;
  border: 6px solid white;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease;
  background: linear-gradient(45deg, #f0f0f0, #e0e0e0);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: #999;
}

.profile-pic:hover {
  transform: scale(1.05);
}

/* Sections */
section {
  padding: 5rem 0;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
  color: var(--text-dark);
  position: relative;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: var(--primary-color);
  border-radius: 2px;
}

/* About Section */
.about {
  background: var(--bg-light);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
  align-items: center;
}

.about-info {
  background: white;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: var(--shadow);
}

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

.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}

.stat {
  text-align: center;
  padding: 1rem;
  background: var(--bg-light);
  border-radius: 8px;
}

.stat-number {
  font-size: 2rem;
  font-weight: bold;
  color: var(--primary-color);
}

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

.skill-category {
  background: lightgray;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease;
}

.skill-category:hover {
  transform: translateY(-5px);
}

.skill-category h3 {
  color: var(--primary-color);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.skill-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.skill-bar {
  width: 100%;
  height: 8px;
  background: var(--bg-light);
  border-radius: 4px;
  overflow: hidden;
  margin-top: 5px;
}

.skill-progress {
  height: 100%;
  background: var(--gradient);
  border-radius: 4px;
  transition: width 1s ease;
  width: 0;
}

/* Experience Section */
.experience {
  background: var(--bg-light);
}

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

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

.timeline-item {
  position: relative;
  margin-bottom: 2rem;
  width: 50%;
}

.timeline-item:nth-child(odd) {
  left: 0;
  padding-right: 2rem;
}

.timeline-item:nth-child(even) {
  left: 50%;
  padding-left: 2rem;
}

.timeline-content {
  background: white;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: var(--shadow);
  position: relative;
}

.timeline-content::before {
  content: "";
  position: absolute;
  top: 50%;
  width: 0;
  height: 0;
  border: 10px solid transparent;
}

.timeline-item:nth-child(odd) .timeline-content::before {
  right: -20px;
  border-left-color: white;
}

.timeline-item:nth-child(even) .timeline-content::before {
  left: -20px;
  border-right-color: white;
}

.timeline-date {
  background: var(--primary-color);
  color: white;
  padding: 5px 15px;
  border-radius: 20px;
  font-size: 0.9rem;
  display: inline-block;
  margin-bottom: 1rem;
}

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

.certificate {
  background: white;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease;
  cursor: pointer;
}

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

.certificate-image {
  height: 300px;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 3rem;
}

.certificate-info {
  padding: 1.5rem;
}

.certificate-info h3 {
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.certificate-org {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

/* Contact Section */
.contact {
  background: var(--text-dark);
  color: white;
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.contact-info h3 {
  color: var(--accent-color);
  margin-bottom: 1.5rem;
}

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

.contact-item i {
  width: 20px;
  height: 20px;
  background: var(--accent-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
}

.contact-form {
  background: rgba(255, 255, 255, 0.1);
  padding: 2rem;
  border-radius: 10px;
  backdrop-filter: blur(10px);
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--accent-color);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px;
  border: none;
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.1);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

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

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

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

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

  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: white;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding-top: 2rem;
    transition: left 0.3s ease;
  }

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

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

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

  .about-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .timeline::before {
    left: 20px;
  }

  .timeline-item {
    width: 100%;
    left: 0 !important;
    padding-left: 60px !important;
    padding-right: 0 !important;
  }

  .timeline-content::before {
    left: -20px !important;
    border-right-color: white !important;
    border-left-color: transparent !important;
  }

  .contact-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

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

  .profile-pic {
    width: 250px;
    height: 250px;
  }
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  z-index: 10000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
}

.modal-content {
  background-color: white;
  margin: 5% auto;
  padding: 2rem;
  border-radius: 10px;
  width: 90%;
  max-width: 600px;
  position: relative;
  animation: fadeInUp 0.3s ease;
}

.close {
  position: absolute;
  right: 20px;
  top: 15px;
  font-size: 28px;
  font-weight: bold;
  cursor: pointer;
  color: var(--text-light);
}

.close:hover {
  color: var(--text-dark);
}