:root {
  --tf-accent-soft: rgba(140, 47, 57, 0.12);
  --tf-accent-wash: rgba(140, 47, 57, 0.05);
  --tf-border: #dedbd5;
  --tf-card-bg: #ffffff;
  --tf-input-bg: #faf9f7;
}

.iwc-main {
  box-sizing: border-box;
  max-width: 46rem;
  margin-inline: auto;
  padding: 2rem 1.25rem 4rem;
}

.iwc-app-card {
  box-sizing: border-box;
  margin-inline: auto;
  max-width: 46rem;
  background: var(--tf-surface);
  border: 1px solid var(--tf-rule);
  border-radius: 2px;
  padding: 1.75rem;
  margin-bottom: 2.5rem;
}

.iwc-top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--tf-rule);
}

.iwc-section-intro {
  display: flex;
  align-items: center;
}

.iwc-badge {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--tf-accent);
  background: var(--tf-accent-wash);
  padding: 0.25rem 0.6rem;
  border-radius: 2px;
  border: 1px solid var(--tf-accent-soft);
}

.iwc-form {
  display: block;
}

.iwc-grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 1rem;
  margin-bottom: 1rem;
}

.iwc-grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.iwc-form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.iwc-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--tf-ink);
}

.iwc-input,
.iwc-select {
  background: var(--tf-surface);
  border: 1px solid var(--tf-rule);
  color: var(--tf-ink);
  font-size: 0.92rem;
  padding: 0.55rem 0.7rem;
  border-radius: 2px;
  font-family: inherit;
  width: 100%;
  box-sizing: border-box;
}

.iwc-input:focus,
.iwc-select:focus {
  outline: none;
  border-color: var(--tf-accent);
}

.iwc-actions-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.iwc-btn-primary {
  background: var(--tf-accent);
  color: var(--tf-accent-ink, #ffffff);
  border: 1px solid var(--tf-accent);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.65rem 1.4rem;
  border-radius: 2px;
  cursor: pointer;
  transition: background 0.15s ease;
}

.iwc-btn-primary:hover {
  background: var(--tf-accent-hover);
}

.iwc-btn-secondary {
  background: var(--tf-surface);
  color: var(--tf-ink);
  border: 1px solid var(--tf-rule);
  font-size: 0.88rem;
  font-weight: 500;
  padding: 0.65rem 1rem;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.iwc-btn-secondary:hover {
  border-color: var(--tf-accent);
  color: var(--tf-accent);
}

.iwc-results {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--tf-rule);
}

.iwc-banner-summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  background: var(--tf-accent-wash);
  border-left: 4px solid var(--tf-accent);
  border-top: 1px solid var(--tf-accent-soft);
  border-right: 1px solid var(--tf-accent-soft);
  border-bottom: 1px solid var(--tf-accent-soft);
  padding: 1.25rem 1.5rem;
  border-radius: 2px;
  margin-bottom: 2rem;
}

.iwc-banner-main {
  box-sizing: border-box;
  padding-inline: 1.5rem;
  margin-inline: auto;
  max-width: 46rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.iwc-banner-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--tf-ink-soft);
}

.iwc-banner-highlight {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
}

.iwc-highlight-num {
  font-family: ui-monospace, "SF Mono", Consolas, monospace;
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--tf-accent);
  line-height: 1;
}

.iwc-highlight-unit {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--tf-ink);
}

.iwc-banner-sub {
  font-size: 0.82rem;
  color: var(--tf-ink-soft);
}

.iwc-banner-goal {
  text-align: right;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.iwc-goal-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--tf-ink-soft);
}

.iwc-goal-date {
  font-family: ui-monospace, "SF Mono", Consolas, monospace;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--tf-ink);
}

.iwc-goal-sub {
  font-size: 0.85rem;
  color: var(--tf-ink-soft);
}

.iwc-section-heading {
  font-family: Charter, "Iowan Old Style", Georgia, serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--tf-ink);
  margin: 0 0 1rem;
}

.iwc-formulas-box {
  margin-bottom: 2rem;
}

.iwc-formulas-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

.iwc-formula-card {
  background: var(--tf-surface);
  border: 1px solid var(--tf-rule);
  border-radius: 2px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.iwc-fc-name {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--tf-ink-soft);
}

.iwc-fc-val {
  font-family: ui-monospace, "SF Mono", Consolas, monospace;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--tf-ink);
  line-height: 1.1;
}

.iwc-fc-desc {
  font-size: 0.75rem;
  color: var(--tf-ink-soft);
  line-height: 1.35;
}

.iwc-calories-box {
  margin-bottom: 2rem;
}

.iwc-cal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.iwc-cal-card {
  background: var(--tf-surface);
  border: 1px solid var(--tf-rule);
  border-radius: 2px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.iwc-cal-card--accent {
  background: var(--tf-accent-wash);
  border-color: var(--tf-accent);
}

.iwc-cc-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--tf-ink-soft);
}

.iwc-cc-val {
  font-family: ui-monospace, "SF Mono", Consolas, monospace;
  font-size: 2rem;
  font-weight: 700;
  color: var(--tf-accent);
  line-height: 1;
}

.iwc-cc-unit {
  font-size: 0.8rem;
  color: var(--tf-ink-soft);
}

.iwc-chart-section {
  margin-bottom: 2rem;
}

.iwc-svg-wrap {
  box-sizing: border-box;
  margin-inline: auto;
  max-width: 46rem;
  width: 100%;
  overflow-x: auto;
  background: var(--tf-surface);
  border: 1px solid var(--tf-rule);
  border-radius: 2px;
  padding: 1rem 0.5rem;
}

.iwc-chart-svg {
  display: block;
  max-width: 100%;
  height: auto;
}

.iwc-table-section {
  margin-bottom: 2rem;
}

.iwc-table-wrap {
  box-sizing: border-box;
  padding-inline: 1.5rem;
  margin-inline: auto;
  max-width: 46rem;
  overflow-x: auto;
}

.iwc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.iwc-table th,
.iwc-table td {
  padding: 0.6rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--tf-rule);
}

.iwc-table th {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--tf-ink-soft);
  background: var(--tf-accent-wash);
}

.iwc-table td {
  color: var(--tf-ink);
}

.iwc-export-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  position: relative;
}

.iwc-toast {
  font-size: 0.85rem;
  color: var(--tf-accent);
  background: var(--tf-accent-wash);
  padding: 0.4rem 0.8rem;
  border-radius: 2px;
  border: 1px solid var(--tf-accent-soft);
  animation: fadeIn 0.2s ease;
}

.iwc-hidden {
  display: none !important;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(3px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 640px) {
  .iwc-app-card {
  box-sizing: border-box;
  margin-inline: auto;
  max-width: 46rem;
    padding: 1.25rem;
  }
  .iwc-top-bar {
    flex-direction: column;
    align-items: stretch;
  }
  .iwc-banner-summary {
    flex-direction: column;
    align-items: flex-start;
  }
  .iwc-banner-goal {
    text-align: left;
  }
  .iwc-export-bar {
    flex-direction: column;
    align-items: stretch;
  }
  .iwc-export-bar button {
    width: 100%;
  }
}

/* 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"] {
  --tf-border: var(--tf-rule);
  --tf-card-bg: var(--tf-surface);
  --tf-input-bg: var(--tf-surface);
}