/* ============================================================
   STUDIO — workstation page styles. Load AFTER hub.css.
   Rack (left) + desk of panes (right). Forge tokens only.
   ============================================================ */

.studio { max-width: 1680px; margin: 0 auto; padding: 0 18px 26px; }

/* ---------- studio toolbar ---------- */
.stbar {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  padding: 12px 0 10px; border-bottom: 1px solid var(--line); margin-bottom: 12px;
}
.stbar .stname {
  font-family: var(--mono); font-size: 15px; font-weight: 700; letter-spacing: .14em;
  text-transform: uppercase; color: var(--ink);
}
.stbar .stsub { font-family: var(--mono); font-size: 10.5px; color: var(--ink-faint); letter-spacing: .05em; }
.stbar .spacer { flex: 1; }
.sttabs { display: flex; gap: 6px; }
.sttab {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .08em; text-transform: uppercase;
  background: var(--bg-raise); border: 1px solid var(--line-strong); color: var(--ink-dim);
  padding: 6px 11px; border-radius: var(--r); cursor: pointer; max-width: 220px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.sttab.on { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.sttab b { color: inherit; font-weight: 700; }

/* ---------- layout ---------- */
.stwrap { display: grid; grid-template-columns: 264px 1fr; gap: 14px; align-items: start; }
@media (max-width: 1060px) { .stwrap { grid-template-columns: 1fr; } }

/* ---------- rack ---------- */
.strack {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--r);
  padding: 10px; max-height: calc(100vh - 160px); overflow: auto;
  position: sticky; top: 64px;
}
@media (max-width: 1060px) {
  .strack { display: none; position: static; max-height: 300px; }
  .strack.open { display: block; }
}
.rk-head { display: flex; flex-direction: column; gap: 6px; margin-bottom: 8px; }
.rk-head input { width: 100%; min-height: 30px; }
.rk-count { font-family: var(--mono); font-size: 9.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-faint); }
.rk-sec {
  font-family: var(--mono); font-size: 9.5px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--ink-faint); margin: 10px 0 4px; padding-top: 8px; border-top: 1px solid var(--line);
}
.rk-sec:first-child { border-top: 0; margin-top: 0; padding-top: 0; }
.rk-row {
  display: flex; align-items: center; gap: 8px; padding: 5px 6px; border-radius: var(--r);
  transition: background 90ms ease;
}
.rk-row:hover { background: var(--panel-2); }
.rk-row .rk-nm {
  font-size: 12px; color: var(--ink); min-width: 0; overflow: hidden;
  text-overflow: ellipsis; white-space: nowrap; flex: 1;
}
.rk-row .rk-nm a { color: inherit; text-decoration: none; }
.rk-row .rk-nm a:hover { color: var(--accent); }
.rk-row .rk-sub { font-family: var(--mono); font-size: 9px; color: var(--ink-faint); display: block; }
.rk-row .loadbtn {
  font-family: var(--mono); font-size: 9.5px; font-weight: 700; letter-spacing: .05em;
  background: var(--bg-raise); border: 1px solid var(--line-strong); color: var(--ink-dim);
  border-radius: var(--r); padding: 3px 7px; cursor: pointer;
}
.rk-row .loadbtn:hover { border-color: var(--accent); color: var(--accent); }
.rk-row .ext { color: var(--ink-faint); text-decoration: none; font-size: 11px; }
.rk-row .ext:hover { color: var(--accent); }

/* ---------- desk / panes ---------- */
.slots { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; align-items: stretch; }
.slots.single { grid-template-columns: 1fr; }
.slots.single .slot.off { display: none; }
@media (max-width: 1060px) {
  .slots { grid-template-columns: 1fr; }
  .slots .slot.off { display: none; }
}
.slot {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--r);
  display: flex; flex-direction: column; overflow: hidden; min-width: 0;
  height: calc(100vh - 235px); min-height: 380px;
}
.slot.on { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent-soft); }
.slot .appbar { border-bottom: 1px solid var(--line); }
.slot .appbar .nm { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.slot .stage { flex: 1; position: relative; background: #000; }
.slot .stage iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.slot .empty {
  position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center;
  justify-content: center; gap: 12px; text-align: center; padding: 20px; background: var(--bg-raise);
}
.slot .empty .big { font-family: var(--mono); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-dim); }
.slot .empty .hint { color: var(--ink-faint); font-size: 12px; max-width: 340px; line-height: 1.6; }
.slot .empty .chips { display: flex; gap: 6px; flex-wrap: wrap; justify-content: center; margin-top: 4px; }

/* ---------- note bar ---------- */
.stnote {
  margin-top: 12px; font-family: var(--mono); font-size: 10px; letter-spacing: .05em;
  color: var(--ink-faint); line-height: 1.7;
}
.stnote b { color: var(--ink-dim); font-weight: 500; }