body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  transition: background-image 1s ease-in-out, background-color 0.5s, color 0.5s;
  color: white;
  min-height: 100vh;
  margin: 0;
  padding: 0;
}

body::before {
  content: "";
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: -1;
}

header, footer {
  background: #1a1a1a;
  color: white;
  padding: 2rem;
  text-align: center;
}

footer {
  margin-top: 4rem;
}

.container {
  max-width: 1100px;
  margin: auto;
  padding: 2rem;
}

.section-title {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  text-align: center;
}

.card {
  background: rgba(255, 255, 255, 0.05);
  padding: 1rem;
  border-radius: 10px;
  margin-bottom: 2rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease;
}

.card:hover {
  transform: scale(1.03);
}

.card img {
  max-width: 100%;
  border-radius: 6px;
  margin-bottom: 1rem;
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.col-md-4 {
  flex: 1 1 calc(33.333% - 20px);
}

.btn {
  display: inline-block;
  padding: 10px 15px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: bold;
  margin-right: 0.5rem;
  margin-top: 0.5rem;
  transition: 0.3s ease-in-out;
  cursor: pointer;
}

.btn-outline-primary {
  border: 2px solid #0d6efd;
  color: #0d6efd;
  background-color: transparent;
}

.btn-outline-primary:hover {
  background-color: #0d6efd;
  color: white;
}

.btn-success {
  background-color: #198754;
  color: white;
  border: none;
}

.btn-success:hover {
  background-color: #157347;
}

.btn-secondary {
  background-color: #6c757d;
  color: white;
  border: none;
}

.btn-secondary:hover {
  background-color: #5a6268;
}

.skill-bar {
  background-color: #e0e0e0;
  border-radius: 20px;
  overflow: hidden;
  margin-bottom: 1rem;
}

.skill-fill {
  height: 20px;
  background-color: #0d6efd;
  width: 0;
  transition: width 2s ease-in-out;
}

.dark-mode {
  background-color: #1a1a1a;
  color: white;
}

.dark-mode header, .dark-mode footer {
  background-color: #000;
}

.cursor {
  animation: blink 1s infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

@media (max-width: 768px) {
  .col-md-4 {
    flex: 1 1 100%;
  }
}