/* Index page styles */
body {
  overflow-y: auto;
  padding: var(--spacing-lg);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

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

/* Header */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
}

.page-title {
  font-size: 2rem;
  font-weight: 700;
}

.page-subtitle {
  color: var(--text-secondary);
  margin-top: var(--spacing-xs);
}

.icon-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--overlay-bg);
  transition: background var(--transition-fast);
}

.icon-button:hover {
  background: var(--progress-bg);
}

/* Import button */
.import-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.import-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
}

.import-btn:active {
  transform: translateY(0);
}

/* Slides grid */
.slides-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.slide-card {
  position: relative;
  display: block;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-normal);
  cursor: pointer;
  opacity: 0;
  animation: fadeInSlide 0.4s ease forwards;
}

@keyframes fadeInSlide {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.slide-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 16px var(--thumbnail-shadow);
}

.slide-thumbnail {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: var(--overlay-bg);
}

.slide-info {
  padding: var(--spacing-md);
}

.slide-name {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.slide-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.slide-pages {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.slide-date {
  font-size: 0.75rem;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: var(--spacing-lg) * 2;
  color: var(--text-secondary);
}

.empty-state-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.3;
}

.empty-state-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.empty-state-text {
  margin-bottom: var(--spacing-md);
}

.empty-state-code {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--overlay-bg);
  border-radius: 4px;
  font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
  font-size: 0.875rem;
}


/* Slide management controls */
.slide-actions {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  display: flex;
  gap: 0.5rem;
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: 10;
}

.slide-card:hover .slide-actions {
  opacity: 1;
}

.slide-action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: transform var(--transition-fast), background var(--transition-fast);
  background: rgba(0, 0, 0, 0.7);
  color: white;
  backdrop-filter: blur(4px);
}

.slide-action-btn:hover {
  transform: scale(1.1);
}

.slide-action-btn.delete:hover {
  background: #dc3545;
}

.slide-action-btn.edit:hover {
  background: var(--primary-color);
}

/* Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
}

.modal-content {
  background: var(--bg-primary);
  border-radius: 12px;
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
  font-size: 1.5rem;
  font-weight: 600;
}

.close-btn {
  background: none;
  border: none;
  font-size: 2rem;
  line-height: 1;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.close-btn:hover {
  color: var(--text-primary);
}

/* Form */
.import-form {
  padding: 1.5rem;
}

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

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="file"],
.form-group input[type="date"],
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 1rem;
  transition: border-color var(--transition-fast);
}

/* Date input styling */
.form-group input[type="date"] {
  position: relative;
  font-family: inherit;
  cursor: pointer;
}

.form-group input[type="date"]::-webkit-calendar-picker-indicator {
  cursor: pointer;
  opacity: 0.6;
  transition: opacity var(--transition-fast);
}

.form-group input[type="date"]::-webkit-calendar-picker-indicator:hover {
  opacity: 1;
}

.form-group input[type="date"]::-webkit-datetime-edit {
  padding: 0;
}

.form-group input[type="date"]::-webkit-datetime-edit-fields-wrapper {
  padding: 0;
}

.form-group input[type="date"]::-webkit-datetime-edit-text {
  color: var(--text-secondary);
  padding: 0 0.25rem;
}

.form-group input[type="date"]::-webkit-datetime-edit-month-field,
.form-group input[type="date"]::-webkit-datetime-edit-day-field,
.form-group input[type="date"]::-webkit-datetime-edit-year-field {
  color: var(--text-primary);
  padding: 0 0.25rem;
}

.form-group textarea {
  font-family: inherit;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

.form-group small {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.modal-actions {
  display: flex;
  gap: 1rem;
  justify-content: flex-end;
}

.btn-primary,
.btn-secondary {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--overlay-bg);
}

/* Import progress */
.import-progress {
  padding: 2rem;
  text-align: center;
}

.progress-spinner {
  width: 48px;
  height: 48px;
  margin: 0 auto 1rem;
  border: 4px solid var(--border-color);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

#progress-message {
  color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 768px) {
  .slides-grid {
    grid-template-columns: 1fr;
  }

  .page-title {
    font-size: 1.5rem;
  }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .import-btn {
    width: 100%;
    justify-content: center;
  }
}