/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #667eea;
  --secondary-color: #764ba2;
  --accent-color: #f093fb;
  --text-primary: #333333;
  --text-secondary: #666666;
  --text-light: #888888;
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-dark: #2c3e50;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  --shadow-hover: 0 15px 40px rgba(0, 0, 0, 0.15);
  --border-radius: 12px;
  --transition: all 0.3s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
}

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

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
}

.section-title {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 3rem;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 30px;
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  font-size: 1rem;
}

.btn-primary {
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: white;
}

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

.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);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: 1rem 0;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo a {
  font-size: 1.5rem;
  font-weight: 700;
  text-decoration: none;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

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

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

.nav-link::after {
  content: "";
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -5px;
  left: 0;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  transition: var(--transition);
}

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

/* Hamburger Menu */
.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

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

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  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 20"><defs><radialGradient id="a" cx="50%" cy="40%"><stop offset="0%" stop-color="%23fff" stop-opacity=".1"/><stop offset="100%" stop-color="%23fff" stop-opacity="0"/></radialGradient></defs><rect width="100%" height="100%" fill="url(%23a)"/></svg>');
  opacity: 0.1;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

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

.highlight {
  background: linear-gradient(135deg, var(--accent-color), #fff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  opacity: 0.9;
  animation: fadeInUp 1s ease 0.2s both;
}

.hero-description {
  font-size: 1.1rem;
  margin-bottom: 2rem;
  opacity: 0.8;
  animation: fadeInUp 1s ease 0.4s both;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  animation: fadeInUp 1s ease 0.6s both;
}

.hero-image {
  text-align: center;
  animation: fadeInRight 1s ease 0.8s both;
}

.hero-image img {
  max-width: 300px;
  width: 100%;
  border-radius: 50%;
  border: 5px solid rgba(255, 255, 255, 0.2);
  box-shadow: var(--shadow-hover);
}

/* About Section */
.about {
  padding: 5rem 0;
  background: var(--bg-secondary);
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.about-text p {
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.stat {
  text-align: center;
}

.stat h3 {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.stat p {
  color: var(--text-secondary);
  font-weight: 500;
}

/* Skills Section */
.skills {
  padding: 5rem 0;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.skill-category {
  background: white;
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

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

.skill-category h3 {
  margin-bottom: 1.5rem;
  color: var(--primary-color);
  font-size: 1.3rem;
}

.skill-items {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-item {
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 25px;
  font-size: 0.9rem;
  font-weight: 500;
}

/* Projects Section */
.projects {
  padding: 5rem 0;
  background: var(--bg-secondary);
}

.projects-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 2rem;
}

.featured-project {
  grid-column: 1;
}

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

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

.project-image {
  position: relative;
  overflow: hidden;
  height: 250px;
}

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

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(102, 126, 234, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}

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

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

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

.project-link:hover {
  transform: scale(1.1);
}

.project-info {
  padding: 2rem;
}

.project-badges {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.badge {
  padding: 0.3rem 0.8rem;
  border-radius: 15px;
  font-size: 0.8rem;
  font-weight: 600;
}

.badge-highlight {
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: white;
}

.badge-institution {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid #ddd;
}

.project-duration {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-bottom: 1rem;
  font-style: italic;
}

.project-info h3 {
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  font-size: 1.4rem;
}

.project-description {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.project-features {
  margin-bottom: 1.5rem;
}

.project-features h4 {
  color: var(--primary-color);
  margin-bottom: 0.8rem;
  font-size: 1rem;
}

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

.project-features li {
  margin-bottom: 0.8rem;
  padding-left: 1.5rem;
  position: relative;
  color: var(--text-secondary);
  line-height: 1.5;
}

.project-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: bold;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.project-tech span {
  padding: 0.4rem 0.8rem;
  border-radius: 15px;
  font-size: 0.8rem;
  font-weight: 500;
}

.tech-frontend {
  background: #61dafb;
  color: #1e1e1e;
}

.tech-backend {
  background: #3776ab;
  color: white;
}

.tech-database {
  background: #47a248;
  color: white;
}

.tech-ai {
  background: #ff6f00;
  color: white;
}

.tech-iot {
  background: #8e24aa;
  color: white;
}

.project-impact {
  display: flex;
  justify-content: space-between;
  background: var(--bg-secondary);
  padding: 1rem;
  border-radius: var(--border-radius);
  margin-top: 1rem;
}

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

.stat-number {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Project Placeholder */
.project-placeholder {
  background: linear-gradient(
    135deg,
    rgba(102, 126, 234, 0.1),
    rgba(118, 75, 162, 0.1)
  );
  border: 2px dashed var(--primary-color);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  transition: var(--transition);
}

.project-placeholder:hover {
  background: linear-gradient(
    135deg,
    rgba(102, 126, 234, 0.15),
    rgba(118, 75, 162, 0.15)
  );
  transform: translateY(-5px);
}

.placeholder-content {
  text-align: center;
  padding: 2rem;
}

.placeholder-content i {
  font-size: 3rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
  opacity: 0.7;
}

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

.placeholder-content p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Contact Section */
.contact {
  padding: 5rem 0;
  background: var(--bg-dark);
  color: white;
}

.contact .section-title {
  color: white;
  background: linear-gradient(135deg, var(--accent-color), #fff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.contact-info h3 {
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.contact-info p {
  margin-bottom: 2rem;
  opacity: 0.8;
}

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

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

.contact-item i {
  width: 20px;
  color: var(--accent-color);
}

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

.social-link {
  width: 50px;
  height: 50px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  text-decoration: none;
  transition: var(--transition);
}

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

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

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

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem;
  border: none;
  border-radius: var(--border-radius);
  background: rgba(255, 255, 255, 0.1);
  color: white;
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255, 255, 255, 0.7);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

/* Footer */
.footer {
  background: #1a252f;
  color: white;
  text-align: center;
  padding: 2rem 0;
}

.footer p {
  opacity: 0.7;
}

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

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

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background-color: white;
    width: 100%;
    text-align: center;
    transition: 0.3s;
    box-shadow: var(--shadow);
    padding: 2rem 0;
  }

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

  .hamburger {
    display: flex;
  }

  .hamburger.active .bar:nth-child(2) {
    opacity: 0;
  }

  .hamburger.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .hamburger.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

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

  .hero-title {
    font-size: 2.5rem;
  }

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

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

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

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

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

  .project-impact {
    flex-direction: column;
    gap: 1rem;
  }

  .project-features li {
    font-size: 0.9rem;
  }

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

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

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }

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

  .hero-buttons {
    flex-direction: column;
    gap: 0.5rem;
  }

  .btn {
    padding: 10px 20px;
    font-size: 0.9rem;
  }
}