:root {
  --primary: #13a0f1;
  --primary-dark: #0d7bbf;
  --primary-light: #e6f5fe;
  --dark: #333;
  --light: #f8f9fa;
  --gray: #6c757d;
  --white: #ffffff;
  --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

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

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

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: var(--white);
  box-shadow: var(--shadow);
  z-index: 1000;
  padding: 1rem 0;
}

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

.logo h2 {
  color: var(--dark);
  font-size: 1.5rem;
}

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

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

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

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

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

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

/* Hero Section */
.hero {
  padding: 120px 0 80px;
  background: linear-gradient(
    135deg,
    var(--primary-light) 0%,
    var(--white) 100%
  );
}

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

.hero-content h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  line-height: 1.2;
}

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

.hero-content p {
  font-size: 1.2rem;
  color: var(--gray);
  margin-bottom: 2rem;
}

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

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.tech-icons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.tech-icons i {
  font-size: 4rem;
  color: var(--primary);
  transition: var(--transition);
}

.tech-icons i:hover {
  transform: translateY(-10px);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 30px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  text-align: center;
}

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

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

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

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

.btn-full {
  width: 100%;
}

/* Sections */
section {
  padding: 80px 0;
}

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

.section-title::after {
  content: "";
  display: block;
  width: 80px;
  height: 4px;
  background: var(--primary);
  margin: 10px auto;
}

/* Skills Section */
.skills {
  background: var(--light);
}

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

.skill-card {
  background: var(--white);
  padding: 2rem;
  border-radius: 10px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

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

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

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

/* Projects Section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

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

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

.project-image img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.project-content {
  padding: 1.5rem;
}

.project-content h3 {
  margin-bottom: 1rem;
  color: var(--dark);
}

.project-tech {
  display: flex;
  gap: 0.5rem;
  margin: 1rem 0;
}

.project-tech span {
  background: var(--primary-light);
  color: var(--primary);
  padding: 5px 10px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

/* Contact Section */
.contact {
  background: var(--light);
}

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

.contact-info h3 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  color: var(--dark);
}

.contact-info p {
  color: var(--gray);
  margin-bottom: 2rem;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

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

.contact-item i {
  font-size: 1.5rem;
  color: var(--primary);
  width: 40px;
  height: 40px;
  background: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-item h4 {
  margin-bottom: 0.5rem;
  color: var(--dark);
}

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

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

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid #ddd;
  border-radius: 5px;
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-light);
}

/* Footer */
.footer {
  background: var(--dark);
  color: var(--white);
  padding: 3rem 0 1rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.footer-logo h3 {
  color: var(--white);
  margin-bottom: 0.5rem;
}

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

.footer-links {
  display: flex;
  gap: 2rem;
}

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

.footer-links a:hover {
  color: var(--primary);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    background: var(--white);
    width: 100%;
    flex-direction: column;
    text-align: center;
    padding: 2rem 0;
    box-shadow: var(--shadow);
    transition: var(--transition);
  }

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

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

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

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

  .contact-container {
    grid-template-columns: 1fr;
  }

  .footer-content {
    flex-direction: column;
    gap: 2rem;
    text-align: center;
  }

  .footer-links {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 2rem;
  }

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

  .tech-icons i {
    font-size: 3rem;
  }

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