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

body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #f7f9fc;
  color: #333;
  line-height: 1.6;
}

/* Header Section */
header {
  background-color: #3498db;
  padding: 20px 0;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
}

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

.navbar .logo a {
  color: white;
  font-size: 24px;
  font-weight: bold;
  text-decoration: none;
}

.navbar .nav-links {
  list-style-type: none;
}

.navbar .nav-links li {
  display: inline;
  margin: 0 15px;
}

.navbar .nav-links a {
  color: white;
  text-decoration: none;
  font-size: 16px;
  transition: color 0.3s ease;
}

.navbar .nav-links a:hover {
  color: #2980b9;
}

/* Profile Header */
.profile-header {
  margin-top: 80px; /* To avoid header overlapping */
  background-color: #fff;
  padding: 60px 20px 40px;
  text-align: center;
  border-bottom: 2px solid #eaeaea;
}

.profile-content {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.profile-photo {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  margin-bottom: 20px;
}

.profile-text h1 {
  font-size: 28px;
  margin-bottom: 10px;
  color: #2c3e50;
}

.profile-text p {
  max-width: 600px;
  font-size: 16px;
  color: #555;
}

/* Skills Section */
.skills-section {
  padding: 50px 20px;
}

.container {
  max-width: 900px;
  margin: auto;
}

.section-title {
  text-align: center;
  font-size: 36px;
  margin-bottom: 40px;
  color: #2c3e50;
}

.skill-category {
  margin-bottom: 40px;
}

.skill-category h2 {
  font-size: 24px;
  margin-bottom: 20px;
  color: #34495e;
}

.skill {
  margin-bottom: 15px;
}

.skill span {
  font-weight: 600;
  display: block;
  margin-bottom: 5px;
}

.progress {
  background-color: #e0e0e0;
  border-radius: 20px;
  overflow: hidden;
  height: 20px;
}

.progress-bar {
  height: 100%;
  line-height: 20px;
  background-color: #3498db;
  color: #fff;
  text-align: right;
  padding-right: 10px;
  border-radius: 20px;
  transition: width 1s ease-in-out;
}

/* Footer Section */
footer {
  background-color: #34495e;
  color: white;
  padding: 40px 20px;
  text-align: center;
}

footer p {
  font-size: 14px;
}

footer .footer-content ul {
  list-style-type: none;
  margin: 20px 0;
}

footer .footer-content ul li {
  display: inline;
  margin: 0 15px;
}

footer .footer-content ul li a {
  color: white;
  font-size: 20px;
  text-decoration: none;
  transition: color 0.3s ease;
}

footer .footer-content ul li a:hover {
  color: #3498db;
}

/* Scroll-to-Top Button */
.scroll-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background-color: #3498db;
  color: white;
  border: none;
  border-radius: 50%;
  padding: 15px;
  font-size: 20px;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  display: none;
  transition: all 0.3s ease;
}

.scroll-to-top:hover {
  background-color: #2980b9;
}

/* Responsive */
@media (max-width: 600px) {
  .profile-photo {
    width: 120px;
    height: 120px;
  }

  .profile-text h1 {
    font-size: 22px;
  }

  .section-title {
    font-size: 28px;
  }

  .skill-category h2 {
    font-size: 20px;
  }
}