.settings-modal .modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid #e5e7eb;
  flex-shrink: 0;
}

.settings-modal .modal-title {
  font-size: 1.1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.settings-modal .modal-close-btn {
  background: none;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  color: #6c757d;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
}
.settings-modal .modal-close-btn:hover {
  color: #343a40;
}

.settings-modal .modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  space-y: 1.5rem;
  flex: 1;
  min-height: 0;
}

.settings-modal .form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.settings-modal .provider-selector {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.settings-modal .provider-btn {
  padding: 0.75rem;
  border-radius: 8px;
  border: 1px solid #ced4da;
  background-color: #f8f9fa;
  color: #495057;
  transition: all 0.2s;
  font-weight: 500;
  cursor: pointer;
}

.settings-modal .provider-btn:hover {
  border-color: #adb5bd;
}

.settings-modal .provider-btn.active {
  border-color: #007bff;
  background-color: #e7f1ff;
  color: #0056b3;
  box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.2);
}

.settings-modal .form-group-stack {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1.5rem;
}

.settings-modal .form-label-icon {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: #495057;
  margin-bottom: 0.25rem;
}

.settings-modal .form-input {
  width: 100%;
  padding: 0.75rem;
  border-radius: 8px;
  border: 1px solid #ced4da;
  background-color: #fff;
  font-size: 1rem;
  transition: all 0.2s;
  box-sizing: border-box;
}

.settings-modal .form-input:focus {
  outline: none;
  border-color: #80bdff;
  box-shadow: 0 0 0 0.2rem rgba(0,123,255,.25);
}

.settings-modal .form-hint {
  font-size: 0.75rem;
  color: #6c757d;
  margin-top: 0.25rem;
}

.settings-modal .batch-actions-section {
  margin-top: 1.5rem;
  border-top: 1px solid #e5e7eb;
}

.settings-modal .section-title {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.settings-modal .bulk-action-box {
  background-color: #f8f9fa;
  padding: 1rem;
  border-radius: 8px;
}

.settings-modal .progress-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: #495057;
  margin-bottom: 0.5rem;
}

.settings-modal .progress-bar-container {
  width: 100%;
  background-color: #e9ecef;
  border-radius: 99px;
  height: 0.75rem;
  overflow: hidden;
  margin-bottom: 0.75rem;
}

.settings-modal .progress-bar {
  background-color: #007bff;
  height: 100%;
  width: 0%;
  border-radius: 99px;
  transition: width 0.3s ease;
}

.settings-modal .modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  padding: 1rem 1.5rem;
  border-top: 1px solid #e5e7eb;
  background-color: #f8f9fa;
  flex-shrink: 0;
}

.settings-modal .button-primary,
.settings-modal .button-secondary,
.settings-modal .button-tertiary,
.settings-modal .button-danger {
  padding: 0.6rem 1rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.settings-modal .button-primary {
  background-color: #007bff;
  color: white;
}
.settings-modal .button-primary:hover {
  background-color: #0056b3;
}

.settings-modal .button-secondary {
  width: 100%;
  justify-content: center;
  background-color: #fff;
  color: #495057;
  border-color: #ced4da;
}
.settings-modal .button-secondary:hover {
  background-color: #f8f9fa;
  border-color: #007bff;
  color: #007bff;
}

.settings-modal .button-tertiary {
  background-color: #e9ecef;
  color: #495057;
}
.settings-modal .button-tertiary:hover {
  background-color: #dee2e6;
}

.settings-modal .button-danger {
  width: 100%;
  justify-content: center;
  background-color: #fbebee;
  color: #dc3545;
  border-color: #f5c6cb;
}
.settings-modal .button-danger:hover {
  background-color: #f8d7da;
}

/* AI 生成按钮 */
.ai-generate-btn {
  margin-left: 10px;
  padding: 8px 12px;
  background-color: #6f42c1; /* Purple to distinguish AI */
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s;
  flex-shrink: 0;
  width: 36px;
  height: 38px;
}

.ai-generate-btn:hover {
  background-color: #59359a;
}

.ai-generate-btn:disabled {
  background-color: #a58ac4;
  cursor: not-allowed;
}

/* AI Loading Spinner */
@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.ai-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 1s linear infinite;
}

.animate-spin {
  animation: spin 1s linear infinite;
}

/* Modal Messages */
.modal-message {
  padding: 10px 15px;
  margin-bottom: 20px;
  border-radius: 6px;
  font-size: 0.95rem;
  visibility: hidden;
}

.modal-message.success {
  background-color: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.modal-message.error {
  background-color: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

.modal-message.info {
  background-color: #d1ecf1;
  color: #0c5460;
  border: 1px solid #bee5eb;
}

/* 壁纸：标题旁的轻量恢复操作 */
.settings-modal .wallpaper-field-label-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
}

.settings-modal .restore-style-wallpaper-btn {
  appearance: none;
  margin: 0;
  padding: 0.2rem 0.55rem;
  border: 1px solid #cfe2ff;
  border-radius: 999px;
  background: #f0f7ff;
  color: #0d6efd;
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
  white-space: nowrap;
}

.settings-modal .restore-style-wallpaper-btn:hover {
  background: #e2efff;
  border-color: #9ec5fe;
  color: #0a58ca;
}

.settings-modal .restore-style-wallpaper-btn:active {
  background: #d6e9ff;
  border-color: #6ea8fe;
}

.settings-modal .restore-style-wallpaper-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.18);
}