:root {
  --dpi-primary: #0284c7;
  --dpi-primary-hover: #0369a1;
  --dpi-bg-card: #ffffff;
  --dpi-border: #e2e8f0;
  --dpi-text-main: #0f172a;
  --dpi-text-muted: #64748b;
  --dpi-pill-bg: #f1f5f9;
  --dpi-pill-hover: #e2e8f0;
  --dpi-result-bg: #f8fafc;
  --dpi-accent-subtle: #f0f9ff;
  --dpi-table-stripe: #f8fafc;
  --dpi-badge-pass: #16a34a;
  --dpi-badge-warn: #d97706;
}

.dpi-calc-container {
  max-width: 860px;
  margin: 0 auto 3rem auto;
  font-family: inherit;
  color: var(--dpi-text-main);
}

.dpi-input-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 700px) {
  .dpi-input-grid {
    grid-template-columns: 1fr;
  }
}

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

.dpi-section-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-top: 0;
  margin-bottom: 1.25rem;
  color: var(--dpi-text-main);
}

.dpi-dim-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}

.dpi-field {
  margin-bottom: 1rem;
}

.dpi-field:last-child {
  margin-bottom: 0;
}

.dpi-field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--dpi-text-main);
}

.dpi-field input,
.dpi-field select {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--dpi-border);
  border-radius: 8px;
  background: var(--dpi-bg-card);
  color: var(--dpi-text-main);
  font-size: 0.95rem;
  box-sizing: border-box;
}

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

.dpi-quick-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-top: 0.5rem;
}

.dpi-presets-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--dpi-text-muted);
}

.dpi-pill-btn {
  background: var(--dpi-pill-bg);
  border: 1px solid var(--dpi-border);
  color: var(--dpi-text-main);
  border-radius: 9999px;
  padding: 0.25rem 0.65rem;
  font-size: 0.75rem;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

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

.dpi-action-row {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.dpi-primary-btn {
  flex: 1;
  background: var(--dpi-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, transform 0.05s ease;
}

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

.dpi-primary-btn:active {
  transform: scale(0.99);
}

.dpi-secondary-btn {
  background: var(--dpi-pill-bg);
  color: var(--dpi-text-main);
  border: 1px solid var(--dpi-border);
  border-radius: 8px;
  padding: 0.85rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
}

.dpi-secondary-btn:hover {
  background: var(--dpi-pill-hover);
}

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

.dpi-primary-result {
  text-align: center;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--dpi-border);
}

.dpi-result-caption {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--dpi-text-muted);
  margin-bottom: 0.5rem;
}

.dpi-size-display {
  font-size: 2.75rem;
  font-weight: 800;
  color: var(--dpi-primary);
  line-height: 1.1;
  margin-bottom: 0.25rem;
}

.dpi-metric-cm {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--dpi-text-muted);
}

.dpi-metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--dpi-border);
}

@media (max-width: 640px) {
  .dpi-metrics-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.dpi-metric-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.dpi-metric-label {
  font-size: 0.75rem;
  color: var(--dpi-text-muted);
}

.dpi-metric-val {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dpi-text-main);
}

.dpi-comparisons-section {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--dpi-border);
}

.dpi-comparisons-title,
.dpi-paper-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 1rem 0;
  color: var(--dpi-text-main);
}

.dpi-table-wrapper {
  overflow-x: auto;
}

.dpi-comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  text-align: left;
}

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

.dpi-comparison-table th {
  background: var(--dpi-pill-bg);
  font-weight: 600;
  color: var(--dpi-text-main);
}

.dpi-comparison-table tr:nth-child(even) td {
  background: var(--dpi-table-stripe);
}

.dpi-table-active-row td {
  font-weight: 700;
  color: var(--dpi-primary);
  background: var(--dpi-accent-subtle) !important;
}

.dpi-paper-compatibility {
  padding-top: 1.5rem;
}

.dpi-paper-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

@media (max-width: 640px) {
  .dpi-paper-grid {
    grid-template-columns: 1fr;
  }
}

.dpi-paper-card {
  background: var(--dpi-bg-card);
  border: 1px solid var(--dpi-border);
  border-radius: 8px;
  padding: 0.85rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.dpi-paper-info {
  display: flex;
  flex-direction: column;
}

.dpi-paper-name {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--dpi-text-main);
}

.dpi-paper-dims {
  font-size: 0.75rem;
  color: var(--dpi-text-muted);
}

.dpi-paper-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

.dpi-badge-ok {
  background: rgba(22, 163, 74, 0.1);
  color: var(--dpi-badge-pass);
}

.dpi-badge-tight {
  background: rgba(217, 119, 6, 0.1);
  color: var(--dpi-badge-warn);
}

.dpi-ad {
  overflow: hidden;
  min-height: 280px;
  margin: 32px 0;
  text-align: center;
}
/* 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"] {
  --dpi-primary: #81bcda;
  --dpi-primary-hover: #69aed4;
  --dpi-bg-card: var(--tf-surface);
  --dpi-border: var(--tf-surface);
  --dpi-text-main: var(--tf-ink);
  --dpi-text-muted: var(--tf-ink-faint);
  --dpi-pill-bg: var(--tf-surface);
  --dpi-pill-hover: var(--tf-surface);
  --dpi-result-bg: var(--tf-surface);
  --dpi-accent-subtle: var(--tf-surface);
  --dpi-table-stripe: var(--tf-surface);
  --dpi-badge-pass: #7ad89d;
  --dpi-badge-warn: #dab181;
}