body {
  font-family: 'Poppins', sans-serif;
  background: linear-gradient(120deg, #ffdde1, #ee9ca7);
  min-height: 100vh;
  overflow-x: hidden;
}

.navbar .container-fluid {
  display: flex;
  justify-content: flex-start;
  align-items: center;
}

.navbar-brand {
  margin: 0;
  font-weight: 600;
  font-size: 1.2rem;
}

.form-section, .table-section {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border-radius: 15px;
  padding: 30px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
  margin-bottom: 40px;
}

.btn-custom {
  background: linear-gradient(45deg, #fff, #ffd1dc);
  color: #ff416c;
  font-weight: bold;
  border: none;
  transition: 0.3s;
}

.btn-custom:hover {
  background: #ff4b2b;
  color: white;
}

.btn-danger {
  background: #ff4b2b;
  color: #fff;
  font-weight: bold;
  border: none;
}

.btn-danger:hover {
  background: #e03e2e;
  color: white;
}

input.form-control, select.form-control {
  background: #fff;
  border-radius: 5px;
  border: 1px solid #ccc;
  padding: 10px;
  color: #333;
  font-size: 16px;
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.05);
  cursor: pointer;
}

select.blood-dropdown {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16'%3E%3Cpath fill='gray' d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 12px;
  padding-right: 30px;
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table-responsive-sm {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.table td, .table th {
  text-align: center;
  white-space: nowrap;
  padding: 8px 10px;
}

@media (max-width: 768px) {
  .form-section form .row > div {
    width: 100%;
    margin-bottom: 10px;
  }

  #filterBloodGroup {
    width: 90% !important;
  }

  .form-section, .table-section {
    padding: 15px;
  }

  h3, h4, h5 {
    font-size: 1rem;
  }

  .table td, .table th {
    font-size: 12px;
    padding: 6px;
  }
}