kerf-engine/app/src/App.css

/* ── Global component styles for Kerf Engine app ── */

/* File Upload Zone */
.file-upload-zone {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 24px 16px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background-color 0.15s;
  user-select: none;
}

.file-upload-zone:hover,
.file-upload-zone--drag-over {
  border-color: var(--accent);
  background: var(--accent-bg);
}

.file-upload-zone:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.file-upload-prompt {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.file-upload-icon {
  font-size: 28px;
}

.file-upload-prompt p {
  margin: 0;
  color: var(--text-h);
  font-size: 15px;
}

.file-upload-prompt small {
  color: var(--text);
  font-size: 13px;
}

.file-upload-preview {
  display: flex;
  align-items: center;
  gap: 12px;
}

.file-upload-thumb {
  width: 56px;
  height: 56px;
  object-fit: cover;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.file-upload-info {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  text-align: left;
}

.file-upload-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-h);
  word-break: break-all;
}

.file-upload-size {
  font-size: 13px;
  color: var(--text);
}

.file-upload-badge {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--accent);
  background: var(--accent-bg);
  padding: 2px 6px;
  border-radius: 3px;
}

/* Preset Selector */
.preset-selector {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.preset-heading {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-h);
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.preset-loading,
.preset-error {
  font-size: 14px;
  color: var(--text);
  margin: 0;
}

.preset-error {
  color: #e74c3c;
}

.preset-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.preset-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  cursor: pointer;
  text-align: left;
  transition: border-color 0.12s, background-color 0.12s;
  font-family: inherit;
}

.preset-card:hover {
  border-color: var(--accent-border);
  background: var(--accent-bg);
}

.preset-card--selected {
  border-color: var(--accent);
  background: var(--accent-bg);
  box-shadow: 0 0 0 1px var(--accent);
}

.preset-card-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-h);
  text-transform: capitalize;
}

.preset-card-desc {
  font-size: 12px;
  color: var(--text);
  line-height: 1.3;
}

/* Parameter Sliders */
.parameter-sliders {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.parameter-heading {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-h);
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.slider-row {
  display: grid;
  grid-template-columns: 120px 1fr 48px;
  align-items: center;
  gap: 8px;
}

.slider-label {
  font-size: 13px;
  color: var(--text-h);
  white-space: nowrap;
}

.slider-input {
  width: 100%;
  height: 4px;
  cursor: pointer;
  accent-color: var(--accent);
}

.slider-value {
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* SVG Preview */
.svg-preview {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  min-height: 300px;
}

.svg-preview--loading {
  gap: 12px;
}

.svg-preview-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.svg-preview-status {
  font-size: 14px;
  color: var(--text);
  margin: 0;
}

.svg-preview--error {
  gap: 4px;
}

.svg-preview-error {
  font-size: 14px;
  color: #e74c3c;
  margin: 0;
}

.svg-preview-hint {
  font-size: 13px;
  color: var(--text);
  margin: 0;
}

.svg-preview--empty {
  opacity: 0.7;
}

.svg-preview-placeholder {
  font-size: 15px;
  color: var(--text);
  text-align: center;
  margin: 0;
}

.svg-preview--ready {
  justify-content: flex-start;
  gap: 12px;
}

.svg-preview-container {
  width: 100%;
  max-height: 70vh;
  overflow: auto;
}

.svg-preview-container svg {
  width: 100%;
  height: auto;
  display: block;
}

.svg-preview-meta {
  display: flex;
  gap: 16px;
  font-size: 12px;
  color: var(--text);
  padding: 6px 0;
  border-top: 1px solid var(--border);
  width: 100%;
}

.svg-preview-warnings {
  color: #e67e22;
}

/* Use This button */
.use-this-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 24px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s;
  font-family: inherit;
}

.use-this-btn:hover {
  opacity: 0.9;
}

.use-this-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Placeholder views */
.placeholder-view {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  font-size: 20px;
  color: var(--text);
}