/* Unit Converter: its own styles, on the family tokens (site.css) and the
   bench layer (bench.css). Light and dark come from the tokens. */

.conv-layout {
  display: grid;
  grid-template-columns: 12rem minmax(0, 1fr);
  gap: clamp(1rem, 3vw, 2rem);
  align-items: start;
}
@media (max-width: 45rem) {
  .conv-layout {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* ---------- Categories ---------- */

.cat-sidebar {
  position: sticky;
  top: 6rem;
}
@media (max-width: 45rem) {
  .cat-sidebar {
    position: static;
  }
}
.cat-sidebar-title {
  margin-bottom: 0.6rem;
  padding: 0 0.25rem;
  color: var(--ink-muted);
  font: 500 0.7rem/1.4 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.cat-list {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
@media (max-width: 45rem) {
  .cat-list {
    flex-direction: row;
    overflow-x: auto;
    padding-bottom: 0.5rem;
    gap: 6px;
  }
}
.cat-btn {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  width: 100%;
  padding: 0.55rem 0.75rem;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  background: transparent;
  color: var(--ink-muted);
  font: 500 0.85rem/1.2 var(--font);
  text-align: left;
  white-space: nowrap;
  cursor: pointer;
  transition: background 0.15s var(--ease), color 0.15s var(--ease);
}
.cat-btn:hover {
  background: var(--surface-sunk);
  color: var(--ink);
}
.cat-btn.active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--ink);
}
.cat-btn svg {
  width: 15px;
  height: 15px;
  flex: none;
  opacity: 0.65;
}
.cat-btn.active svg {
  opacity: 1;
}

/* ---------- The converter ---------- */

.conv-panel {
  border-radius: var(--r-md);
  overflow: hidden;
}
.conv-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 1.1rem 1.4rem 1rem;
  border-bottom: 1px solid var(--glass-line);
}
.conv-header-title {
  color: var(--ink);
  font: 800 1.05rem/1.2 var(--font-display);
}
.conv-header-sub {
  margin-top: 2px;
  color: var(--ink-muted);
  font-size: 0.8rem;
}
.btn-clear {
  flex: none;
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: transparent;
  color: var(--ink-muted);
  font: 600 0.78rem/1 var(--font);
  cursor: pointer;
}
.btn-clear:hover {
  border-color: var(--accent);
  color: var(--ink);
}

.conv-body {
  padding: 0.4rem 0;
}
.unit-row {
  display: grid;
  grid-template-columns: 9rem minmax(0, 1fr);
  align-items: center;
  gap: 0.9rem;
  padding: 0.3rem 1.4rem;
  border-bottom: 1px solid var(--glass-line);
}
.unit-row:last-child {
  border-bottom: none;
}
.unit-row.focused {
  background: var(--accent-soft);
}
.unit-sym {
  display: block;
  color: var(--accent-ink);
  font: 700 0.9rem/1.1 var(--font-mono);
}
.unit-name {
  display: block;
  margin-top: 1px;
  color: var(--ink-muted);
  font-size: 0.72rem;
  line-height: 1.3;
}
.unit-input {
  width: 100%;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  background: var(--surface);
  color: var(--ink);
  font: 400 0.95rem/1.3 var(--font-mono);
  font-variant-numeric: tabular-nums;
  -moz-appearance: textfield;
  transition: border-color 0.15s var(--ease), box-shadow 0.15s var(--ease);
}
.unit-input::-webkit-inner-spin-button,
.unit-input::-webkit-outer-spin-button {
  -webkit-appearance: none;
}
.unit-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
@media (max-width: 30rem) {
  .unit-row {
    grid-template-columns: 6.5rem minmax(0, 1fr);
    padding-inline: 1rem;
  }
}

.unit-section-label {
  padding: 0.6rem 1.4rem 0.25rem;
  color: var(--ink-muted);
  font: 500 0.75rem/1.4 var(--font-mono);
}
.conv-note {
  padding: 0.9rem 1.4rem 1rem;
  color: var(--ink-muted);
  font-size: 0.82rem;
  line-height: 1.6;
}