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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f5f5f5;
}

/* Utility Classes */
.hidden {
  display: none !important;
}

.page {
  min-height: 100vh;
}

.error-message {
  color: #d32f2f;
  font-size: 0.875rem;
  margin-top: 0.5rem;
  display: none;
}

.error-message.show {
  display: block;
}

.loading {
  text-align: center;
  padding: 2rem;
  color: #666;
}

/* Buttons */
.btn {
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1rem;
  transition: background-color 0.2s;
}

.btn-primary {
  background-color: #1976d2;
  color: white;
}

.btn-primary:hover {
  background-color: #1565c0;
}

.btn-secondary {
  background-color: #757575;
  color: white;
}

.btn-secondary:hover {
  background-color: #616161;
}

.btn-danger {
  background-color: #d32f2f;
  color: white;
}

.btn-danger:hover {
  background-color: #c62828;
}

/* Login Page */
.login-container {
  max-width: 400px;
  margin: 10vh auto;
  padding: 2rem;
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.login-container h1 {
  text-align: center;
  margin-bottom: 2rem;
  color: #1976d2;
}

/* Forms */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.admin-fields {
  border-top: 2px solid #e0e0e0;
  margin-top: 2rem;
  padding-top: 1.5rem;
}

.admin-fields h3 {
  color: #1976d2;
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #1976d2;
}

.form-group small {
  display: block;
  margin-top: 0.25rem;
  color: #666;
  font-size: 0.875rem;
}

/* Header */
header {
  background: white;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  padding: 1rem 2rem;
  margin-bottom: 2rem;
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header-content h1 {
  color: #1976d2;
  font-size: 1.5rem;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Main Content */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem 2rem;
}

/* Filters */
.filters {
  background: white;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  margin-bottom: 2rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: flex-end;
}

.filter-group {
  flex: 1;
  min-width: 200px;
}

.filter-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.filter-group select {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 1rem;
}

/* Items Grid */
.items-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.5rem;
}

.item-card {
  background: white;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.item-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.item-thumbnail {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background-color: #e0e0e0;
}

.item-info {
  padding: 1rem;
}

.item-info h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  color: #333;
}

.item-category {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  background-color: #e3f2fd;
  color: #1976d2;
  border-radius: 4px;
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
}

.item-type {
  color: #666;
  font-size: 0.875rem;
}

/* Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.modal-content {
  background: white;
  border-radius: 8px;
  padding: 2rem;
  max-width: 800px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
}

.close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-size: 2rem;
  color: #666;
  cursor: pointer;
  line-height: 1;
}

.close:hover {
  color: #333;
}

/* Item Detail */
#item-detail h2 {
  margin-bottom: 1rem;
  color: #333;
}

.item-images {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.item-images img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 4px;
}

.item-details-grid {
  display: grid;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.detail-row {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 1rem;
}

.detail-label {
  font-weight: 600;
  color: #666;
}

.detail-value {
  color: #333;
}

.item-actions {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

/* Form Actions */
.form-actions {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

/* Existing Images in Edit Form */
#existing-images h4 {
  margin-bottom: 1rem;
  color: #333;
}

.existing-images-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.existing-image-item {
  position: relative;
  border: 1px solid #ddd;
  border-radius: 4px;
  padding: 0.5rem;
  text-align: center;
}

.existing-image-item img {
  width: 100%;
  height: 120px;
  object-fit: cover;
  border-radius: 4px;
  margin-bottom: 0.5rem;
}

.existing-image-item .btn-small {
  padding: 0.25rem 0.5rem;
  font-size: 0.875rem;
  width: 100%;
}

.primary-badge {
  display: inline-block;
  background: #1976d2;
  color: white;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  margin-top: 0.25rem;
}

/* Lightbox */
.lightbox-content {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

#lightbox-img {
  max-width: 100%;
  max-height: 90vh;
  object-fit: contain;
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0, 0, 0, 0.7);
  color: white;
  border: none;
  font-size: 3rem;
  padding: 1rem 1.5rem;
  cursor: pointer;
  border-radius: 4px;
  transition: background 0.2s;
}

.lightbox-nav:hover {
  background: rgba(0, 0, 0, 0.9);
}

.lightbox-prev {
  left: 1rem;
}

.lightbox-next {
  right: 1rem;
}

.lightbox-counter {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.7);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  font-size: 1rem;
}

/* Star Rating */
.star-rating {
  font-size: 2rem;
  cursor: pointer;
  user-select: none;
}

.star {
  color: #ddd;
  transition: color 0.2s;
}

.star:hover,
.star.active {
  color: #ffd700;
}

/* Radio Group */
.radio-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: flex-start;
  width: 100%;
}

.radio-group label {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 4px;
  transition: background-color 0.2s;
  width: auto;
  max-width: 100%;
  text-align: left;
}

.radio-group label:hover {
  background-color: #f5f5f5;
}

.radio-group input[type="radio"] {
  margin-right: 0.75rem;
  cursor: pointer;
  flex-shrink: 0;
}

/* Star Display (read-only) */
.star-display {
  color: #ffd700;
  font-size: 1.2rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .filters {
    flex-direction: column;
  }

  .items-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }

  .detail-row {
    grid-template-columns: 1fr;
  }

  .modal-content {
    width: 95%;
    padding: 1.5rem;
  }
}