/* AI Resource Hub — Audio Studio */
.as-tabs { overflow: visible; }
.as-tabs button { flex: 1 1 0; min-width: 0; display: inline-flex; align-items: center; justify-content: center; gap: 5px; padding: 8px 6px;
  border: 0; border-radius: 10px; background: none; font: inherit; font-size: 0.84rem; font-weight: 600; color: var(--color-text-muted); cursor: pointer; white-space: nowrap; }
.as-tabs button:hover { color: var(--color-text); background: var(--color-surface-2); }
.as-tabs button.is-on { color: var(--color-text); background: var(--color-surface-2); }
.as-tabs button:focus-visible, .as-model:focus-visible, .as-filter button:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }

.as-models { display: grid; gap: 8px; }
.as-model { display: grid; gap: 2px; text-align: left; padding: 10px 12px; border-radius: 12px; cursor: pointer; font: inherit;
  border: 1px solid var(--color-border); background: var(--color-surface-2); color: var(--color-text); }
.as-model strong { font-size: 0.92rem; }
.as-model span { font-size: 0.78rem; color: var(--color-text-muted); line-height: 1.35; }
.as-model:hover { border-color: var(--color-text-muted); }
.as-model.is-on { border-color: var(--color-accent); box-shadow: 0 0 0 1px var(--color-accent) inset; background: var(--color-accent-soft); }

.as .field label output { float: right; font-weight: 600; color: var(--color-text); font-variant-numeric: tabular-nums; }
.as .field input[type="range"] { width: 100%; accent-color: var(--color-accent); }
.as .field select, .as .field input[type="number"], .as .field input[type="text"] { width: 100%; }
.as-row3 { display: grid; grid-template-columns: 1fr 1.4fr 1fr; gap: 8px; }
.as-row3 .field { margin-bottom: 0; }
.as-row3 + .field { margin-top: 12px; }
.as-hint { display: block; margin-top: 4px; font-size: 0.76rem; color: var(--color-text-muted); }

.as-library { margin-top: 8px; }
.as-lib-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 12px; }
.as-lib-head h2 { margin: 0; font-size: 1.1rem; }
.as-filter { display: flex; flex-wrap: wrap; gap: 4px; }
.as-filter button { border: 1px solid var(--color-border); background: var(--color-surface); color: var(--color-text-muted); font: inherit; font-size: 0.8rem;
  font-weight: 600; padding: 5px 11px; border-radius: 999px; cursor: pointer; }
.as-filter button.is-on { color: var(--color-text); border-color: var(--color-text-muted); background: var(--color-surface-2); }
.as-list { display: grid; gap: 10px; }
.as-empty { color: var(--color-text-muted); padding: 28px 0; text-align: center; }
.as-item { border: 1px solid var(--color-border); background: var(--color-surface); border-radius: 14px; padding: 12px 14px; display: grid; gap: 10px; }
.as-item.is-new { border-color: var(--color-accent); }
.as-item-head { display: grid; grid-template-columns: auto 1fr; align-items: baseline; gap: 2px 10px; }
.as-item-head strong { font-size: 0.95rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.as-item-head small { grid-column: 2; color: var(--color-text-muted); font-size: 0.76rem; }
.as-tag { grid-row: span 2; align-self: center; font-size: 0.68rem; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; padding: 3px 8px;
  border-radius: 999px; background: var(--color-accent-soft); color: var(--color-text); }
.as-item audio { width: 100%; height: 40px; }
.as-stems { display: grid; gap: 6px; }
.as-stem { display: grid; grid-template-columns: 92px 1fr auto; align-items: center; gap: 8px; }
.as-stem span { font-size: 0.82rem; font-weight: 600; text-transform: capitalize; }
.as-dl { font-size: 0.78rem; font-weight: 600; color: var(--color-text-muted); }
.as-acts { display: flex; flex-wrap: wrap; gap: 6px; }
.as-acts .btn-sm { padding: 6px 12px; font-size: 0.8rem; }
@media (max-width: 1180px) { .as-tabs button svg { display: none; } }
@media (max-width: 520px) {
  .as-row3 { grid-template-columns: 1fr 1fr; }
  .as-row3 .field:nth-child(2) { grid-column: span 2; order: -1; }
  .as-stem { grid-template-columns: 1fr auto; }
  .as-stem span { grid-column: span 2; }
}