/* ===== Assets Page ===== */
.assets-page {
  height: 100%;
  overflow-y: auto;
  padding: var(--space-3xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.assets-header {
  display: flex;
  align-items: baseline;
  gap: var(--space-md);
}

.assets-title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

.assets-count {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

.assets-create-btn {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: var(--space-sm) var(--space-lg);
  background: var(--color-accent);
  color: #FFFFFF;
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.assets-create-btn:hover {
  background: var(--color-accent-hover);
}

/* Tabs */
.assets-tabs {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.assets-tab {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-bg-tertiary);
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.assets-tab:hover {
  background: var(--color-bg-hover);
  color: var(--color-text-primary);
}

.assets-tab.active {
  background: var(--tab-bg, var(--color-accent-light));
  color: var(--tab-color, var(--color-accent));
  border-color: var(--tab-color, var(--color-accent));
  font-weight: 600;
}

/* Sub-tabs */
.assets-subtabs {
  display: flex;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-lg);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
}

.assets-subtab {
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-tertiary);
  transition: all var(--transition-fast);
}

.assets-subtab:hover { color: var(--color-text-primary); }
.assets-subtab.active {
  background: var(--color-accent);
  color: #FFFFFF;
}

/* Assets List */
.assets-list {
  flex: 1;
}

.assets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.novel-grid {
  grid-template-columns: repeat(2, 1fr);
}

/* File Card */
.asset-card {
  display: flex;
  gap: var(--space-lg);
  padding: var(--space-xl);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.asset-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-border-hover);
}

.asset-card-icon {
  flex-shrink: 0;
}

.asset-file-type {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 56px;
  height: 28px;
  padding: 0 10px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.asset-card-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.asset-card-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.asset-card-desc {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.asset-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  padding-top: var(--space-sm);
}

.asset-card-size, .asset-card-date {
  font-size: 11px;
  color: var(--color-text-disabled);
}

/* Novel Card */
.asset-novel-card {
  display: flex;
  gap: var(--space-xl);
  padding: var(--space-2xl);
  background: linear-gradient(135deg, #FFFBEB 0%, #FFF7ED 50%, #FFFBF0 100%);
  border: 1px solid #FDE68A;
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.asset-novel-card:hover {
  border-color: #E8922C;
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.novel-card-cover {
  width: 80px;
  height: 110px;
  background: linear-gradient(135deg, #FFF7ED, #FFEDD5);
  border: 1px solid #FED7AA;
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  flex-shrink: 0;
}

.novel-card-badge {
  font-size: 10px;
  font-weight: 600;
  color: #D97706;
  background: #FEF3C7;
  padding: 1px 8px;
  border-radius: var(--radius-full);
}

.novel-card-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.novel-card-title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: #92400E;
}

.novel-card-desc {
  font-size: var(--text-sm);
  color: #A16207;
  line-height: 1.5;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.novel-card-meta {
  font-size: var(--text-xs);
  color: #B45309;
  display: flex;
  gap: var(--space-sm);
  margin-top: auto;
}

/* Empty */
.assets-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-5xl);
  color: var(--color-text-disabled);
  font-size: var(--text-sm);
  gap: var(--space-md);
}

/* Loading */
.assets-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-5xl);
  color: var(--color-text-tertiary);
  font-size: var(--text-sm);
  gap: var(--space-lg);
}

.audit-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border-light);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ===== Assets Modal ===== */
.assets-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  animation: fadeIn var(--transition-fast);
  padding: var(--space-2xl);
}

.assets-modal {
  background: var(--color-bg-secondary);
  border-radius: var(--radius-2xl);
  width: 100%;
  max-width: 680px;
  max-height: 85vh;
  overflow-y: auto;
  position: relative;
  animation: slideUp var(--transition-normal);
  box-shadow: var(--shadow-xl);
}

.assets-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-xl) var(--space-2xl);
  border-bottom: 1px solid var(--color-border-light);
}

.assets-modal-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-primary);
}

.assets-modal-close {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-tertiary);
  transition: all var(--transition-fast);
}

.assets-modal-close:hover {
  background: var(--color-bg-hover);
  color: var(--color-text-primary);
}

.assets-modal-body {
  padding: var(--space-2xl);
}

.assets-modal-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  padding: var(--space-md);
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-md);
}

.assets-modal-type {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.assets-modal-cat {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

.assets-modal-size, .assets-modal-date {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

/* Text Preview */
.assets-preview-text {
  margin-bottom: var(--space-xl);
  max-height: 400px;
  overflow-y: auto;
}

.assets-preview-code {
  padding: var(--space-lg);
  background: #1e1e2e;
  color: #cdd6f4;
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-all;
}

/* Image Preview */
.assets-preview-image {
  margin-bottom: var(--space-xl);
  text-align: center;
}

.assets-preview-image img {
  max-width: 100%;
  max-height: 400px;
  border-radius: var(--radius-md);
  object-fit: contain;
}

/* Video Preview */
.assets-preview-video {
  margin-bottom: var(--space-xl);
}

.assets-preview-video video {
  width: 100%;
  max-height: 400px;
  border-radius: var(--radius-md);
  background: #000;
}

/* Audio Preview */
.assets-preview-audio {
  margin-bottom: var(--space-xl);
  padding: var(--space-xl);
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-md);
  text-align: center;
}

.assets-preview-audio audio {
  width: 100%;
  max-width: 500px;
}

/* Edit Section */
.assets-edit-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.assets-edit-textarea {
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background: var(--color-bg-primary);
  resize: vertical;
  min-height: 200px;
  outline: none;
  transition: border-color var(--transition-fast);
}

.assets-edit-textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-light);
}

.assets-edit-actions {
  display: flex;
  gap: var(--space-sm);
  justify-content: flex-end;
}

/* Modal Actions */
.assets-modal-actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border-light);
}

/* Assets Buttons */
.assets-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.assets-btn-primary {
  background: var(--color-accent);
  color: #FFFFFF;
  border: none;
}

.assets-btn-primary:hover {
  background: var(--color-accent-hover);
}

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

.assets-btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.assets-btn-cancel {
  background: transparent;
  color: var(--color-text-tertiary);
  border: 1px solid var(--color-border);
}

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

.assets-btn-danger {
  background: transparent;
  color: var(--color-error);
  border: 1px solid var(--color-error);
}

.assets-btn-danger:hover {
  background: var(--color-error-light);
}

/* Create Asset Modal */
.assets-create-modal {
  max-width: 500px;
}

.assets-create-modal .form-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-primary);
}

.form-label .required {
  color: var(--color-error);
}

.form-input,
.form-textarea {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text-primary);
  background: var(--color-bg-primary);
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-light);
}

.form-textarea {
  resize: vertical;
  font-family: var(--font-mono);
  font-size: 13px;
}

.form-submit-btn {
  width: 100%;
  padding: var(--space-md) var(--space-xl);
  background: var(--color-accent);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.form-submit-btn:hover:not(:disabled) {
  background: var(--color-accent-hover);
}

.form-submit-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Online Preview */
.assets-preview-online {
  margin: var(--space-md) 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.assets-preview-online-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-bg-tertiary);
  border-bottom: 1px solid var(--color-border);
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
}

.assets-preview-reader {
  background: var(--color-bg-secondary);
  max-height: 500px;
  overflow: auto;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.assets-kb-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 6px;
  background: #EEEDFF;
  color: #5B5FED;
  border-radius: var(--radius-xs);
  font-size: 11px;
  font-weight: 600;
  margin-left: var(--space-sm);
}

/* Responsive */
@media (max-width: 768px) {
  .assets-page { padding: var(--space-lg); }
  .novel-grid { grid-template-columns: 1fr; }
  .assets-grid { grid-template-columns: 1fr; }
  .asset-novel-card { flex-direction: column; }
  .novel-card-cover { width: 100%; height: 60px; flex-direction: row; }
  .assets-modal { max-width: 100%; max-height: 90vh; border-radius: var(--radius-xl); }
  .assets-modal-body { padding: var(--space-xl); }
}