/* Genel Stil */
body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  padding: 0;
  margin: 0;
}

.container-fluid {
  padding: 0;
}

/* Sidebar */
.sidebar {
  background: linear-gradient(180deg, #2c3e50 0%, #34495e 100%);
  min-height: 100vh;
  padding: 30px 20px;
  box-shadow: 2px 0 15px rgba(0, 0, 0, 0.1);
}

.sidebar-content {
  position: sticky;
  top: 20px;
}

.sidebar img {
  border: 3px solid #fff;
  transition: transform 0.3s ease;
}

.sidebar img:hover {
  transform: scale(1.02);
}

.info-box {
  background: rgba(255, 255, 255, 0.1);
  padding: 20px;
  border-radius: 10px;
  border-left: 4px solid #3498db;
}

/* Main Content */
.main-content {
  padding: 30px;
}

.form-container {
  background: white;
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
  margin-bottom: 30px;
}

.header-section {
  padding-bottom: 20px;
  border-bottom: 3px solid #667eea;
  margin-bottom: 30px;
}

.header-section h2 {
  color: #2c3e50;
  font-size: 1.8rem;
  margin-bottom: 5px;
}

.header-section h4 {
  color: #7f8c8d;
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.header-section h3 {
  color: #667eea;
  font-size: 1.5rem;
}

/* Form Elements */
.form-label {
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 8px;
}

.form-control {
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  padding: 10px 15px;
  transition: all 0.3s ease;
}

.form-control:focus {
  border-color: #667eea;
  box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

.form-check-input {
  width: 1.2em;
  height: 1.2em;
  margin-top: 0.15em;
}

.form-check-input:checked {
  background-color: #667eea;
  border-color: #667eea;
}

.form-check-label {
  margin-left: 8px;
  color: #2c3e50;
}

/* Button */
.btn-primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  border-radius: 50px;
  padding: 12px 40px;
  font-size: 1.1rem;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

/* Alerts */
.alert {
  border-radius: 10px;
  border: none;
  padding: 15px 20px;
}

.alert-success {
  background-color: #d4edda;
  color: #155724;
}

.alert-danger {
  background-color: #f8d7da;
  color: #721c24;
}

/* Responsive */
@media (max-width: 768px) {
  .sidebar {
    min-height: auto;
    padding: 20px 15px;
  }

  .main-content {
    padding: 20px 15px;
  }

  .form-container {
    padding: 25px 20px;
  }

  .header-section h2 {
    font-size: 1.3rem;
  }

  .header-section h4 {
    font-size: 1rem;
  }

  .header-section h3 {
    font-size: 1.2rem;
  }
}

/* Admin Panel Stilleri */
.admin-header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 20px 0;
  margin-bottom: 30px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.stats-card {
  background: white;
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

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

.table-container {
  background: white;
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.table thead {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.badge {
  padding: 5px 10px;
  border-radius: 5px;
}

/* Footer */
.footer-copyright {
  background: white;
  border-radius: 15px;
  padding: 25px 20px;
  margin-top: 20px;
  margin-bottom: 20px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  border-top: 3px solid #667eea;
}

.footer-copyright p {
  color: #2c3e50;
  font-size: 1rem;
}

.footer-copyright strong {
  color: #667eea;
  font-weight: 700;
}

.footer-copyright i {
  color: #764ba2;
}

.footer-copyright small {
  font-size: 0.85rem;
  display: block;
  margin-top: 5px;
}

/* Responsive Footer */
@media (max-width: 768px) {
  .footer-copyright {
    padding: 20px 15px;
    margin-top: 15px;
  }

  .footer-copyright p {
    font-size: 0.9rem;
  }
}