:root {
  --si-primary: #0284c7;
  --si-primary-hover: #0369a1;
  --si-bg-card: #ffffff;
  --si-border: #e2e8f0;
  --si-text-main: #0f172a;
  --si-text-muted: #64748b;
  --si-pill-bg: #f1f5f9;
  --si-pill-hover: #e2e8f0;
  --si-result-bg: #f8fafc;
}

.si-tool-container {
  max-width: 900px;
  margin: 0 auto 3rem auto;
  font-family: inherit;
  color: var(--si-text-main);
}

.si-editor-card {
  background: var(--si-bg-card);
  border: 1px solid var(--si-border);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.si-upload-dropzone {
  border: 2px dashed var(--si-border);
  border-radius: 10px;
  padding: 2rem 1.5rem;
  text-align: center;
  position: relative;
  cursor: pointer;
  background: var(--si-pill-bg);
  transition: border-color 0.15s ease, background 0.15s ease;
  margin-bottom: 1rem;
}

.si-upload-dropzone:hover {
  border-color: var(--si-primary);
  background: var(--si-pill-hover);
}

.si-file-input {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.si-drop-icon {
  font-size: 2.25rem;
  display: block;
  margin-bottom: 0.5rem;
}

.si-drop-text {
  margin: 0 0 0.25rem 0;
  font-size: 0.95rem;
  color: var(--si-text-main);
}

.si-drop-sub {
  font-size: 0.75rem;
  color: var(--si-text-muted);
}

.si-sample-row {
  display: flex;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.si-pill-btn {
  background: var(--si-pill-bg);
  border: 1px solid var(--si-border);
  color: var(--si-text-main);
  border-radius: 9999px;
  padding: 0.35rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.si-pill-btn:hover {
  background: var(--si-pill-hover);
  border-color: var(--si-primary);
}

.si-grid-3 {
  display: grid;
  grid-template-columns: 1.5fr 1.2fr 1fr;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

@media (max-width: 768px) {
  .si-grid-3 {
    grid-template-columns: 1fr;
  }
}

.si-field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
  color: var(--si-text-main);
}

.si-req {
  color: #dc2626;
}

.si-field select {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--si-border);
  border-radius: 8px;
  background: var(--si-bg-card);
  color: var(--si-text-main);
  font-size: 0.9rem;
  box-sizing: border-box;
}

.si-field select:focus {
  outline: none;
  border-color: var(--si-primary);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

.si-action-row {
  display: flex;
  gap: 0.75rem;
}

.si-primary-btn {
  flex: 2;
  background: var(--si-primary);
  color: #ffffff;
  border: none;
  border-radius: 8px;
  padding: 0.85rem 1.5rem;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s ease;
}

.si-primary-btn:hover {
  background: var(--si-primary-hover);
}

.si-secondary-btn {
  background: var(--si-pill-bg);
  color: var(--si-text-main);
  border: 1px solid var(--si-border);
  border-radius: 8px;
  padding: 0.85rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}

.si-results-card {
  background: var(--si-result-bg);
  border: 1px solid var(--si-border);
  border-radius: 12px;
  padding: 1.75rem;
}

.si-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.si-sub-title {
  font-size: 1rem;
  font-weight: 800;
  margin: 0;
  color: var(--si-text-main);
}

.si-dim-badge {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--si-primary);
}

.si-canvas-stage {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0f172a;
  border: 1px solid var(--si-border);
  border-radius: 10px;
  padding: 1rem;
  margin-bottom: 1.5rem;
  min-height: 260px;
  overflow: hidden;
}

.si-canvas-stage canvas {
  max-width: 100%;
  max-height: 380px;
  height: auto;
  border-radius: 4px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.si-specs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 768px) {
  .si-specs-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .si-specs-grid {
    grid-template-columns: 1fr;
  }
}

.si-spec-item {
  background: var(--si-bg-card);
  border: 1px solid var(--si-border);
  border-radius: 10px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.si-spec-name {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--si-text-muted);
}

.si-spec-val {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--si-text-main);
}

.si-spec-sub {
  font-size: 0.75rem;
  color: var(--si-text-muted);
}

.si-table-card {
  background: var(--si-bg-card);
  border: 1px solid var(--si-border);
  border-radius: 8px;
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}

.si-table-wrap {
  overflow-x: auto;
}

.si-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  text-align: left;
}

.si-table th,
.si-table td {
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--si-border);
}

.si-table th {
  background: var(--si-pill-bg);
  font-weight: 700;
  color: var(--si-text-muted);
}

.si-tip-box {
  background: var(--si-bg-card);
  border: 1px solid var(--si-border);
  border-radius: 8px;
  padding: 1.25rem;
}

.si-tip-title {
  font-size: 0.9rem;
  font-weight: 700;
  margin: 0 0 0.25rem 0;
  color: var(--si-primary);
}

.si-tip-box p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--si-text-muted);
  line-height: 1.5;
}

.si-drop-content {
  pointer-events: none;
}

.si-ad {
  overflow: hidden;
  min-height: 280px;
  margin: 32px 0;
  text-align: center;
}

.si-custom-dim-row {
  display: flex;
  gap: 12px;
  align-items: flex-end;
  margin-top: 14px;
  padding: 12px;
  background: var(--si-bg-card);
  border: 1px solid var(--si-border);
  border-radius: 8px;
}

.si-input {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--si-border);
  border-radius: 6px;
  background: var(--si-surface, #ffffff);
  color: var(--si-text-main);
  font-size: 0.95rem;
  font-family: inherit;
  box-sizing: border-box;
}

.si-input:focus {
  outline: none;
  border-color: var(--si-primary);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

.si-lock-field {
  display: flex;
  align-items: center;
  gap: 6px;
  padding-bottom: 10px;
  white-space: nowrap;
}

.si-lock-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--si-text-main);
  cursor: pointer;
}

@media (max-width: 640px) {
  .si-custom-dim-row {
    flex-direction: column;
    align-items: stretch;
  }
}

.si-dropzone-active {
  border-color: var(--si-primary);
  background: var(--si-bg-card);
}
/* tf:dark-palette — generated by migrate_chrome.py */
/* Neutrals inherit the shared chrome tokens so all tools share one
   ground; brand hues are kept and lightened, never inverted. */
[data-theme="dark"] {
  --si-primary: #81bcda;
  --si-primary-hover: #69aed4;
  --si-bg-card: var(--tf-surface);
  --si-border: var(--tf-surface);
  --si-text-main: var(--tf-ink);
  --si-text-muted: var(--tf-ink-faint);
  --si-pill-bg: var(--tf-surface);
  --si-pill-hover: var(--tf-surface);
  --si-result-bg: var(--tf-surface);
}