/* Search form */
.search-form {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.search-input {
  flex: 1;
  padding: 12px 16px;
  border: 2px solid var(--color-border);
  border-radius: 10px;
  font-size: 16px;
  color: var(--color-text);
  transition: border-color 0.2s;
}

.search-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.search-btn {
  background: var(--color-primary);
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
  white-space: nowrap;
}

.search-btn:hover {
  background: var(--color-primary-dark);
}

/* Toolbar */
.toolbar {
  display: none;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding: 10px 14px;
  background: var(--color-bg);
  border-radius: 8px;
  font-size: 13px;
}

.toolbar-stats {
  color: var(--color-text-muted);
  font-weight: 500;
}

.toolbar-actions {
  display: flex;
  gap: 8px;
}

.toolbar-btn {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 12px;
  cursor: pointer;
  color: var(--color-text-muted);
  transition: all 0.2s;
}

.toolbar-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 48px 16px;
  color: var(--color-text-muted);
}

.empty-state .icon {
  font-size: 48px;
  margin-bottom: 12px;
}

/* Engine cards grid */
.engine-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
}

.engine-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-primary);
  border-radius: 10px;
  overflow: hidden;
}

.engine-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 14px;
  border-bottom: 1px solid var(--color-border);
}

.engine-name {
  font-weight: 700;
  font-size: 15px;
}

.engine-meta {
  display: flex;
  align-items: center;
  gap: 8px;
}

.engine-count {
  font-size: 12px;
  color: var(--color-text-muted);
}

.copy-all-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 14px;
  padding: 2px;
  opacity: 0.6;
  transition: opacity 0.2s;
}

.copy-all-btn:hover {
  opacity: 1;
}

.engine-body {
  max-height: 400px;
  overflow-y: auto;
}

/* States */
.engine-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 32px 16px;
  color: var(--color-text-muted);
  font-size: 14px;
}

.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.retry-btn {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 4px 12px;
  font-size: 12px;
  cursor: pointer;
  color: var(--color-text-muted);
}

.retry-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* Result items */
.result-item {
  display: flex;
  align-items: center;
  padding: 8px 14px;
  border-bottom: 1px solid var(--color-border);
  font-size: 14px;
  transition: background 0.15s;
}

.result-item:last-child {
  border-bottom: none;
}

.result-item:hover {
  background: var(--color-bg);
}

.result-num {
  color: var(--color-text-muted);
  font-size: 12px;
  min-width: 24px;
  font-variant-numeric: tabular-nums;
}

.result-keyword {
  flex: 1;
  cursor: pointer;
  color: var(--color-text);
}

.result-keyword:hover {
  color: var(--color-primary);
}

.result-copy {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 2px 8px;
  font-size: 11px;
  cursor: pointer;
  color: var(--color-text-muted);
  opacity: 0;
  transition: opacity 0.15s;
}

.result-item:hover .result-copy {
  opacity: 1;
}

.result-copy:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 1000;
}

.toast {
  background: var(--color-text);
  color: white;
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 13px;
  margin-top: 8px;
  animation: toastIn 0.3s ease;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 640px) {
  .search-form {
    flex-direction: column;
  }

  .engine-grid {
    grid-template-columns: 1fr;
  }

  .toolbar {
    flex-direction: column;
    gap: 8px;
    align-items: stretch;
    text-align: center;
  }

  .toolbar-actions {
    justify-content: center;
  }
}