/* =====================================================================
   Unit Converter Pro — app.css
   Extends the shared design system (base.css). Colors derive ONLY from
   base.css CSS variables so dark + light themes both work.
   ===================================================================== */

[data-theme="light"] .icon-sun { display: none; }
.icon-moon { display: none; }

/* ===================== Category tabs ===================== */
.category-panel { padding: var(--space-3) var(--space-4); }
#categoryTabs { width: 100%; flex-wrap: wrap; }
#categoryTabs button { flex: 1 1 auto; }

/* ===================== Converter panel ===================== */
.converter-panel { margin-top: var(--space-5); }
.converter-panel .pane-head {
  padding: 0 0 var(--space-4);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--space-4);
}

/* ===================== Unit grid ===================== */
.unit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: var(--space-4);
}
.unit-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  transition: border-color var(--dur-1), background var(--dur-1);
}
.unit-field:focus-within {
  border-color: var(--brand-500);
  background: var(--surface-2);
}
.unit-field-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
}
.unit-field label {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--text-secondary);
}
.unit-field .unit-abbr {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
}
.unit-field input {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
}
.unit-field .unit-copy {
  align-self: flex-end;
  padding: 4px 10px;
  font-size: 12px;
}

/* ===================== Responsive ===================== */
@media (max-width: 720px) {
  #statusBadge { display: none; }
  .unit-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
}

@media (max-width: 460px) {
  .unit-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 360px) {
  .unit-grid { grid-template-columns: 1fr; }
}