.formula-tool {
  color: var(--ink, #172033);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.formula-hero {
  border-bottom: 1px solid var(--line, #dfe4ea);
  margin-bottom: 18px;
  padding-bottom: 16px;
}

.formula-hero > span,
.formula-results-head > div > span {
  color: #6b4aa1;
  display: block;
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
}

.formula-hero h1 {
  font-size: 27px;
  letter-spacing: 0;
  margin: 5px 0 7px;
}

.formula-hero p {
  color: var(--muted, #667085);
  margin: 0;
  max-width: 760px;
}

.formula-upload {
  align-items: center;
  background: #f3effb;
  border: 1px dashed rgba(107, 74, 161, 0.35);
  border-radius: 8px;
  box-sizing: border-box;
  cursor: pointer;
  display: flex;
  float: none;
  gap: 18px;
  justify-content: space-between;
  padding: 18px 20px;
  width: 100%;
}

.formula-upload > span,
.formula-upload strong,
.formula-upload span {
  display: block;
}

.formula-upload > span {
  flex: 1 1 auto;
  min-width: 0;
}

.formula-upload strong {
  font-size: 15px;
  margin-bottom: 3px;
}

.formula-upload span span,
.formula-file-meta {
  color: var(--muted, #667085);
  font-size: 12px;
}

.formula-upload input {
  flex: 0 1 270px;
  max-width: 270px;
}

.formula-source,
.formula-results-head,
.formula-card-top,
.formula-result-actions {
  align-items: center;
  display: flex;
  gap: 10px;
  justify-content: space-between;
}

.formula-source {
  background: var(--panel-bg, #fff);
  border: 1px solid var(--line, #dfe4ea);
  border-radius: 8px;
  margin-top: 12px;
  padding: 12px 14px;
}

.formula-source strong,
.formula-source span {
  display: block;
}

.formula-button {
  align-items: center;
  background: var(--panel-bg, #fff);
  border: 1px solid var(--line, #dfe4ea);
  border-radius: 6px;
  color: var(--ink, #172033);
  cursor: pointer;
  display: inline-flex;
  font: inherit;
  font-size: 12px;
  font-weight: 700;
  height: 38px;
  justify-content: center;
  padding: 0 12px;
  white-space: nowrap;
}

.formula-button-primary {
  background: #6b4aa1;
  border-color: #6b4aa1;
  color: #fff;
}

.formula-button:disabled {
  cursor: wait;
  opacity: 0.55;
}

.formula-preview {
  background: #e8ebef;
  border: 1px solid var(--line, #dfe4ea);
  border-radius: 8px;
  margin-top: 12px;
  padding: 16px;
  text-align: center;
}

.formula-preview img {
  background: #fff;
  box-shadow: 0 6px 20px rgba(20, 30, 50, 0.12);
  max-height: 360px;
  max-width: 100%;
}

.formula-progress {
  background: var(--panel-bg, #fff);
  border: 1px solid var(--line, #dfe4ea);
  border-radius: 8px;
  margin-top: 12px;
  padding: 12px 14px;
}

.formula-progress > div {
  display: flex;
  font-size: 12px;
  justify-content: space-between;
  margin-bottom: 7px;
}

.formula-progress progress {
  accent-color: #6b4aa1;
  height: 8px;
  width: 100%;
}

.formula-progress p {
  color: var(--muted, #667085);
  font-size: 12px;
  margin: 7px 0 0;
}

.formula-results {
  margin-top: 18px;
}

.formula-results-head {
  border-bottom: 1px solid var(--line, #dfe4ea);
  margin-bottom: 10px;
  padding-bottom: 10px;
}

.formula-results-head h2 {
  display: block;
  font-size: 20px;
  margin: 2px 0 0;
}

.formula-results-head h2:after {
  display: none;
}

.formula-results-head small {
  color: #6b4aa1;
  font-size: 12px;
}

.formula-card {
  background: var(--panel-bg, #fff);
  border: 1px solid var(--line, #dfe4ea);
  border-radius: 8px;
  margin-bottom: 10px;
  padding: 13px;
}

.formula-card-top span {
  font-size: 12px;
  font-weight: 800;
}

.formula-card-top small {
  color: var(--muted, #667085);
}

.formula-render {
  background: #fafbfc;
  border-radius: 6px;
  box-sizing: border-box;
  margin: 10px 0;
  min-height: 68px;
  overflow-x: auto;
  padding: 18px 12px;
  text-align: center;
}

.formula-code {
  background: #111827;
  border: 0;
  border-radius: 6px;
  box-sizing: border-box;
  color: #e5edf7;
  font: 12.5px/1.55 Consolas, "SFMono-Regular", monospace;
  min-height: 72px;
  padding: 10px;
  resize: vertical;
  width: 100%;
}

.formula-copy {
  margin-top: 8px;
}

.formula-empty {
  border-bottom: 1px solid var(--line, #dfe4ea);
  color: var(--muted, #667085);
  display: flex;
  gap: 10px;
  margin-top: 16px;
  padding: 0 2px 15px;
}

.formula-empty[hidden],
.formula-results[hidden],
.formula-preview[hidden],
.formula-progress[hidden],
.formula-source[hidden] {
  display: none;
}

.formula-empty strong {
  color: var(--ink, #172033);
  white-space: nowrap;
}

@media screen and (max-width: 760px) {
  .formula-upload,
  .formula-source,
  .formula-results-head,
  .formula-empty {
    align-items: stretch;
    flex-direction: column;
  }

  .formula-upload input {
    flex: 0 0 auto;
    max-width: 100%;
  }

  .formula-source .formula-button {
    width: 100%;
  }

  .formula-result-actions {
    justify-content: stretch;
  }

  .formula-result-actions .formula-button {
    flex: 1;
  }
}