/* ==========================================================================
   Unit Converter
   ========================================================================== */

/* Top row (search + categories) spans both workspace columns */
.uc-top {
  grid-column: 1 / -1;
  display: grid;
  gap: 1.25rem;
  min-width: 0;
  padding: clamp(20px, 3vw, 36px);
  border-bottom: 1px solid var(--border);
}

.uc-search-box { position: relative; }
.uc-search-box .icon {
  position: absolute;
  left: 1rem; top: 50%;
  width: 18px; height: 18px;
  translate: 0 -50%;
  color: var(--muted);
  pointer-events: none;
}
.uc-search-box .input { padding-left: 2.75rem; font-size: 1rem; }
.uc-search-box .input::-webkit-search-cancel-button { cursor: pointer; }

.uc-q-msg { margin: 0; min-height: 1.25rem; line-height: 1.5; }
.uc-q-msg.is-good, .uc-msg.is-good { color: var(--success-text); }
.uc-q-msg.is-bad, .uc-msg.is-bad { color: var(--danger-text); }
.uc-msg.is-warn { color: var(--warn-text); }

.uc-examples { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.uc-examples .chip-btn { padding: 0.35rem 0.75rem; font-size: 0.8rem; }

.uc-cats .segmented-options { gap: 0.4rem; }

/* Converter */
.uc .ws-input { gap: 1rem; }
.uc-side { display: flex; flex-direction: column; gap: 0.45rem; min-width: 0; }
.uc-pair { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); gap: 0.6rem; }
.uc-num { font: 600 1.2rem/1.2 var(--font-display); letter-spacing: -0.01em; font-variant-numeric: tabular-nums; }
.uc-pair .select { min-width: 0; text-overflow: ellipsis; }
.uc-msg { margin: 0; line-height: 1.5; }
.uc-msg:empty { display: none; }

.uc-swap-row { display: flex; justify-content: center; margin: -0.25rem 0 -0.5rem; }
.uc-swap {
  display: grid;
  place-items: center;
  width: 44px; height: 44px;
  border: 1px solid var(--border-2);
  border-radius: 50%;
  background: var(--surface-2);
  color: var(--text);
  cursor: pointer;
  transition: background-color 0.2s, border-color 0.2s, transform 0.35s var(--ease);
}
.uc-swap .icon { width: 20px; height: 20px; rotate: 90deg; }
.uc-swap:hover { border-color: rgba(139, 92, 246, 0.6); background: var(--grad-soft); color: var(--on-soft); }
.uc-swap:active { transform: rotate(180deg); }
.uc-swap:focus-visible { outline: 2px solid var(--lilac); outline-offset: 2px; }

.uc-result-card .result-card-head { margin-bottom: 0.4rem; }
.uc-result {
  margin: 0;
  min-height: 1.3em;
  color: var(--text);
  font: 700 clamp(1.2rem, 2.4vw, 1.55rem)/1.3 var(--font-display);
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}
.uc-formula { margin: 0.65rem 0 0; color: var(--text-2); font-size: 0.92rem; line-height: 1.55; }
.uc-reverse { margin: 0.35rem 0 0; color: var(--muted); font-size: 0.82rem; line-height: 1.5; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.uc-reverse[hidden] { display: none; }

.uc-opts { display: flex; flex-wrap: wrap; align-items: flex-start; gap: 0.75rem 1.25rem; }
.uc-prec { flex: 0 1 240px; }
.uc-note { flex: 1 1 220px; margin: 0; padding-top: 1.75rem; line-height: 1.55; }
.uc-note[hidden] { display: none; }

/* Table of every unit */
.uc-table-hint { margin: -0.5rem 0 0; }
.uc-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}
.uc-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.uc-table thead th {
  padding: 0.7rem 0.9rem;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-align: left;
  text-transform: uppercase;
}
.uc-table thead th:last-child { text-align: right; }
.uc-table tbody th, .uc-table td { padding: 0; border-bottom: 1px solid var(--border); text-align: left; vertical-align: middle; }
.uc-table tbody tr:last-child > * { border-bottom: 0; }

.uc-pick {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.15rem 0.45rem;
  width: 100%;
  padding: 0.6rem 0.9rem;
  border: 0;
  background: none;
  color: var(--text);
  font: inherit;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: background-color 0.2s;
}
.uc-pick:hover { background: var(--surface-2); }
.uc-pick:focus-visible { outline: 2px solid var(--lilac); outline-offset: -2px; border-radius: 6px; }
.uc-unit-sym { color: var(--muted); font-size: 0.8rem; }
.uc-tag {
  padding: 0.08rem 0.45rem;
  border: 1px solid rgba(139, 92, 246, 0.45);
  border-radius: 999px;
  background: var(--grad-soft);
  color: var(--on-soft);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.uc-tag:empty { display: none; }

.uc-table td.uc-val {
  width: 46%;
  padding: 0.6rem 0.9rem;
  color: var(--text);
  font: 0.86rem/1.4 var(--font-mono);
  font-variant-numeric: tabular-nums;
  text-align: right;
  overflow-wrap: anywhere;
}
.uc-table tr.is-from > *, .uc-table tr.is-to > * { background: rgba(139, 92, 246, 0.09); }
.uc-table tr.is-to td.uc-val { font-weight: 700; }

.uc-table .uc-group th {
  padding: 0.5rem 0.9rem;
  background: var(--surface-2);
  color: var(--lilac);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

@media (max-width: 520px) {
  .uc-pair { grid-template-columns: 1fr; gap: 0.5rem; }
  .uc-examples { flex-wrap: nowrap; margin-inline: -4px; padding: 2px 4px 4px; overflow-x: auto; scrollbar-width: none; }
  .uc-examples::-webkit-scrollbar { display: none; }
  .uc-examples .chip-btn { flex: none; }
  .uc-cats .segmented label { padding: 0.42rem 0.72rem; font-size: 0.82rem; }
  .uc-note { padding-top: 0; }
  .uc-pick, .uc-table td.uc-val { padding: 0.55rem 0.7rem; }
  .uc-table thead th { padding: 0.6rem 0.7rem; }
}