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

:root {
  --primary-color: #2563eb;
  --secondary-color: #1e40af;
  --accent-color: #3b82f6;
  --dark-bg: #0f172a;
  --darker-bg: #020617;
  --light-text: #f1f5f9;
  --gray-text: #94a3b8;
  --card-bg: #1e293b;
  --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

html {
  scroll-behavior: smooth;
}

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

/* Navigation */
nav {
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(10px);
  padding: 1rem 0;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

nav.scrolled {
  padding: 0.5rem 0;
  background: rgba(15, 23, 42, 0.98);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.nav-links a {
  color: var(--light-text);
  text-decoration: none;
  transition: color 0.3s ease;
  font-weight: 500;
}

.nav-links a:hover {
  color: var(--accent-color);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--light-text);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 2rem;
}

.hero::before {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  background: var(--gradient);
  opacity: 0.1;
  z-index: 0;
}

.hero-content {
  max-width: 1200px;
  display: flex;
  align-items: center;
  gap: 4rem;
  z-index: 1;
  flex-wrap: wrap;
  justify-content: center;
}

.hero-text {
  flex: 1;
  min-width: 300px;
  margin-top: 84px;
}

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

.hero-text .gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-text p {
  font-size: 1.3rem;
  color: var(--gray-text);
  margin-bottom: 2rem;
  animation: fadeInUp 1s ease 0.2s backwards;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  animation: fadeInUp 1s ease 0.4s backwards;
}

.btn {
  padding: 0.8rem 2rem;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  border: none;
  font-size: 1rem;
}

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

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

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

.btn-secondary:hover {
  background: var(--accent-color);
  transform: translateY(-3px);
}

.hero-image {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  min-width: 300px;
}

.profile-pic {
  width: 350px;
  height: 350px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 20%;
  border: 5px solid var(--accent-color);
  box-shadow: 0 20px 60px rgba(59, 130, 246, 0.3);
  animation: float 5s ease-in-out infinite;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 2rem;
}

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

.section-title::after {
  content: "";
  display: block;
  width: 80px;
  height: 4px;
  background: var(--gradient);
  margin: 1rem auto;
  border-radius: 2px;
}

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

.about-image {
  text-align: center;
}

.about-image img {
  width: 100%;
  max-width: 400px;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.about-text h3 {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: var(--accent-color);
}

.about-text p {
  color: var(--gray-text);
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

.objectives {
  background: var(--card-bg);
  padding: 1.5rem;
  border-radius: 10px;
  margin-top: 2rem;
  border-left: 4px solid var(--accent-color);
}

.objectives h4 {
  margin-bottom: 1rem;
  color: var(--accent-color);
}

.objectives ul {
  list-style: none;
  padding-left: 0;
}

.objectives li {
  padding: 0.5rem 0;
  color: var(--gray-text);
  position: relative;
  padding-left: 2rem;
}

.objectives li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent-color);
  font-weight: bold;
}

/* Experience Section */
.experience-grid {
  display: grid;
  gap: 2rem;
}

.experience-card {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: 15px;
  border-left: 4px solid var(--accent-color);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.experience-card:hover {
  transform: translateX(10px);
  box-shadow: 0 10px 40px rgba(59, 130, 246, 0.2);
}

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

.experience-title {
  font-size: 1.5rem;
  color: var(--accent-color);
}

.experience-duration {
  background: rgba(59, 130, 246, 0.2);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
}

.experience-card ul {
  list-style: none;
  padding-left: 0;
}

.experience-card li {
  padding: 0.5rem 0;
  color: var(--gray-text);
  position: relative;
  padding-left: 2rem;
}

.experience-card li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent-color);
  font-weight: bold;
}

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

.skill-category {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: 15px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.skill-category:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 40px rgba(59, 130, 246, 0.3);
}

.skill-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.skill-category h3 {
  margin-bottom: 1rem;
  color: var(--accent-color);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}

.skill-tag {
  background: rgba(59, 130, 246, 0.2);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  color: var(--light-text);
}

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

.project-card {
  background: var(--card-bg);
  border-radius: 15px;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 40px rgba(59, 130, 246, 0.3);
}

.project-image {
  width: 100%;
  height: 200px;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: white;
}

.project-content {
  padding: 1.5rem;
}

.project-content h3 {
  margin-bottom: 0.5rem;
  color: var(--accent-color);
}

.project-content p {
  color: var(--gray-text);
  margin-bottom: 1rem;
}

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

.project-link:hover {
  text-decoration: underline;
}

/* Certifications */
.certifications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.cert-card {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: 15px;
  text-align: center;
  border: 2px solid transparent;
  transition: all 0.3s ease;
}

.cert-card:hover {
  border-color: var(--accent-color);
  transform: scale(1.05);
}

.cert-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--accent-color);
}

.cert-card h3 {
  margin-bottom: 0.5rem;
  color: var(--accent-color);
}

.cert-card p {
  color: var(--gray-text);
}

/* Contact Section */
.contact-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.contact-info {
  display: flex;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.contact-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.contact-item i {
  font-size: 2rem;
  color: var(--accent-color);
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 2rem;
}

.social-link {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--card-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--light-text);
  text-decoration: none;
  transition: all 0.3s ease;
  font-size: 1.5rem;
}

.social-link:hover {
  background: var(--gradient);
  transform: translateY(-5px);
}

/* Footer */
footer {
  background: var(--dark-bg);
  text-align: center;
  padding: 2rem;
  color: var(--gray-text);
}

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

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

/* Responsive Design */
@media (max-width: 968px) {
  .nav-links {
    position: fixed;
    top: 70px;
    left: -100%;
    flex-direction: column;
    background: rgba(15, 23, 42, 0.98);
    width: 100%;
    padding: 2rem;
    gap: 1rem;
    transition: left 0.3s ease;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
  }

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

  .mobile-menu-btn {
    display: block;
  }

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

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

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

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

  .contact-info {
    flex-direction: column;
    gap: 2rem;
  }
}

@media (max-width: 640px) {
  .hero-text h1 {
    font-size: 2rem;
  }

  .hero-text p {
    font-size: 1.1rem;
  }

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

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

  .container {
    padding: 3rem 1rem;
  }

  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }

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

/* Scroll to Top Button */
.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: var(--gradient);
  border: none;
  border-radius: 50%;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 999;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
}

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