:root {
  --primary-color: #6c757d;
  --secondary-color: #adb5bd;
  --text-color: #333;
  --light-bg: #f8f9fa;
  --dark-bg: #495057;
  --transition: all 0.3s ease;
}

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

.navbar {
  background-color: rgba(255, 255, 255, 0.95) !important;
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  padding: 1rem 0;
}

.navbar-brand {
  font-weight: 700;
  color: var(--primary-color) !important;
}

.nav-link {
  font-weight: 500;
  color: var(--primary-color) !important;
  transition: var(--transition);
  margin: 0 0.5rem;
}

.nav-link:hover {
  color: var(--secondary-color) !important;
}

section {
  padding: 6rem 0;
  opacity: 1;
  transition: opacity 0.6s ease-out;
  scroll-margin-top: 5rem;
}

.fade-in {
  opacity: 1 !important;
}

#about {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--light-bg) 0%, #fff 100%);
  padding-top: 8rem;
}

#about .row {
  align-items: center;
}

#about h5, #about p {
  text-align: center;
}

#about .text-end {
  text-align: center !important;
}

#about h5 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-color);
  margin-bottom: 1.5rem;
}

#about p {
  font-size: 1.2rem;
  color: var(--text-color);
}

#about img {
  width: 250px;
  height: 250px;
  object-fit: cover;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transition: var(--transition);
}

#about img:hover {
  transform: scale(1.05);
}

#skills {
  background-color: white;
}

#projects {
  background-color: var(--light-bg);
}

.tool-icon {
  height: 80px;
  max-width: 100px;
  object-fit: contain;
  transition: var(--transition);
  filter: grayscale(100%);
  opacity: 0.7;
}

.tool-icon:hover {
  filter: grayscale(0%);
  opacity: 1;
  transform: scale(1.1);
}

.card {
  border: none;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transition: var(--transition);
  opacity: 1;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
}

.card-img-top {
  height: 200px;
  object-fit: cover;
}

.card-title {
  font-weight: 700;
  color: var(--primary-color);
}

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

#contact {
  background: linear-gradient(135deg, var(--dark-bg) 0%, var(--primary-color) 100%);
  color: white;
}

#contact h2 {
  color: white;
  font-weight: 700;
}

#contact h6 {
  font-size: 1.2rem;
  margin-bottom: 2rem;
}

.btn-floating {
  background: white;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0 0.5rem;
  transition: var(--transition);
}

.btn-floating:hover {
  transform: translateY(-5px);
  background: white !important;
}

.badge.bg-primary {
  background-color: var(--primary-color) !important;
}

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

.btn-primary:hover {
  background-color: var(--dark-bg);
  border-color: var(--dark-bg);
}

.btn-outline-primary {
  color: var(--primary-color);
  border-color: var(--primary-color);
}

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

@media (max-width: 768px) {
  #about h5 {
    font-size: 2rem;
  }
  
  #about img {
    width: 200px;
    height: 200px;
    margin: 2rem auto;
    display: block;
  }
  
  .tool-icon {
    width: 60px;
    height: 60px;
  }
}

.profile-picture {
  width: 250px;
  height: 250px;
  object-fit: cover;
  border-radius: 50%;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transition: var(--transition);
}

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