/* Multiview: parete monitor. Fondo grigio neutro (non altera la percezione dell'immagine),
   immagini su nero, etichetta sotto ogni monitor; l'ambra segnala l'audio in ascolto. */
:root {
  --wall: #2a2c2f;
  --panel: #1c1d1f;
  --line: #3b3e42;
  --text: #ecebe7;
  --dim: #9b9da1;
  --amber: #ffb300;
  --red: #e5484d;
  --gap: 6px;
  --bar: 44px;
  --umd: 34px;
  --meter: 28px;
  --green: #3fbf5f;
  --cols: 4;
  --rows: 2;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.4;
  color-scheme: dark;
}
*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: var(--wall);
  color: var(--text);
  padding: env(safe-area-inset-top, 0px) env(safe-area-inset-right, 0px) env(safe-area-inset-bottom, 0px) env(safe-area-inset-left, 0px);
}
[hidden] { display: none !important; }
button, input { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--amber); outline-offset: 2px; }

/* ---------- barra in alto */
.bar {
  height: var(--bar);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 12px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}
.brand { margin: 0; font-size: 1rem; font-weight: 650; letter-spacing: .02em; }
.clock { font-variant-numeric: tabular-nums; color: var(--dim); margin-right: auto; }
/* linguette delle pagine */
.tabs { display: flex; gap: 4px; }
.tabs a { padding: 6px 12px; border-radius: 6px; color: var(--dim); text-decoration: none; font-weight: 600; white-space: nowrap; }
.tabs a:hover { background: #ffffff14; color: var(--text); }
.tabs a[aria-current="page"] { background: #ffffff24; color: var(--text); }
.menu { display: flex; align-items: center; gap: 4px; }
.menu a, .link {
  background: none; border: 0; padding: 8px 10px; border-radius: 6px;
  color: var(--text); text-decoration: none; cursor: pointer; white-space: nowrap;
}
.menu a:hover, .link:hover { background: #ffffff14; }
.menu .short { display: none; }

/* ---------- parete */
.grid {
  display: grid;
  grid-template-columns: repeat(var(--cols), minmax(0, 1fr));
  gap: var(--gap);
  padding: var(--gap);
  margin: 0 auto;
  min-height: calc(100dvh - var(--bar));   /* su schermi grandi la parete resta centrata in altezza */
  align-content: center;
  /* la griglia 4x2 sta tutta nello schermo senza scorrere */
  max-width: calc((((100dvh - var(--bar) - var(--gap) * (var(--rows) + 1)) / var(--rows) - var(--umd)) * 16 / 9 + var(--meter)) * var(--cols) + var(--gap) * (var(--cols) + 1));
}
.tile { display: flex; flex-direction: column; min-width: 0; background: var(--panel); }
.screen { display: flex; background: #000; }
.well { flex: 1; min-width: 0; position: relative; aspect-ratio: 16 / 9; background: #000; overflow: hidden; }
/* misuratore audio: due coppie di barre (canali 1-2 e 3-4); verde fino a -18 dBFS, ambra fino a -9, rosso oltre */
.meter { position: relative; width: var(--meter); display: flex; gap: 4px; padding: 3px 4px 3px 3px; background: #0b0b0c; }
.meter .pair { flex: 1; display: flex; gap: 1px; }
.lvl { flex: 1; position: relative; background: linear-gradient(to top, var(--green) 0 70%, var(--amber) 70% 85%, var(--red) 85% 100%); }
.lvl i { position: absolute; inset: 0; background: #1f2023; transform-origin: top; }
.lvl.absent { opacity: .3; }
.tile.off .lvl { opacity: .3; }
.scale { display: none; }
.well video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; background: #000; }
.status {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  padding: 8px; text-align: center; color: var(--dim); font-size: .85rem; pointer-events: none;
}
.status.err { color: var(--red); }
.tile.live .status { display: none; }
.tile.live.busy .status {
  display: flex; inset: auto 6px 6px auto; padding: 2px 8px; border-radius: 4px;
  background: #000000b3; color: var(--text); font-size: .75rem;
}
.umd {
  height: var(--umd);
  display: flex; align-items: center; gap: 8px;
  padding: 0 4px 0 8px;
  border-top: 2px solid transparent;
  font-size: .86rem;
}
.num { font-variant-numeric: tabular-nums; color: var(--dim); min-width: 1.4em; }
.name { flex: 1; min-width: 0; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; font-weight: 600; }
.tile.off .name { color: var(--dim); font-weight: 400; }
.ctl { display: flex; gap: 3px; }
.ctl button {
  height: 26px; min-width: 34px; padding: 0 6px;
  background: #ffffff12; border: 1px solid transparent; border-radius: 4px;
  font-size: .78rem; font-variant-numeric: tabular-nums; cursor: pointer;
}
.ctl button:hover { background: #ffffff24; }
.ctl button:disabled { opacity: .35; cursor: default; }
.ctl button[aria-pressed="true"] { background: var(--amber); color: #111; font-weight: 700; }
.ctl .exp svg { display: block; width: 14px; height: 14px; margin: 0 auto; }
/* audio in ascolto: l'etichetta del monitor si accende */
.tile.listening .umd { border-top-color: var(--amber); }
.tile.listening .num { color: var(--amber); }

/* ---------- monitor a tutto schermo */
.tile.expanded { position: fixed; inset: 0; z-index: 50; background: #000; }
.tile.expanded .screen { flex: 1; min-height: 0; }
.tile.expanded .well { aspect-ratio: auto; }
.tile.expanded .meter { width: 108px; gap: 10px; padding: 16px 14px 30px 38px; }
.tile.expanded .meter .pair { gap: 2px; }
.tile.expanded .lvl::after { content: attr(data-ch); position: absolute; left: 0; right: 0; bottom: -20px; text-align: center; font-size: .72rem; color: var(--dim); }
.tile.expanded .scale { display: block; position: absolute; left: 0; width: 30px; top: 16px; bottom: 30px; font-size: .68rem; color: var(--dim); font-variant-numeric: tabular-nums; }
.scale span { position: absolute; right: 0; transform: translateY(-50%); }
.scale .t0 { top: 0; } .scale .t9 { top: 15%; } .scale .t18 { top: 30%; } .scale .t40 { top: 66.67%; }
.tile.expanded .umd { height: 48px; background: var(--panel); font-size: 1rem; padding: 0 10px 0 14px; padding-bottom: env(safe-area-inset-bottom, 0px); box-sizing: content-box; }
.tile.expanded .ctl button { height: 36px; min-width: 52px; font-size: .9rem; }
.tile.expanded .ctl .exp svg { width: 18px; height: 18px; }
body.has-expanded { overflow: hidden; }

@media (max-width: 899px) { :root { --cols: 2; } .grid { max-width: none; min-height: 0; } }
@media (max-width: 699px) {
  :root { --cols: 2; --gap: 4px; --meter: 20px; }
  .clock { display: none; }
  .brand { margin-right: auto; }
  .bar { height: auto; min-height: var(--bar); flex-wrap: wrap; gap: 0 8px; padding: 0 8px; }
  .tabs { order: 3; flex-basis: 100%; padding-bottom: 6px; }
  .tabs a { flex: 1; text-align: center; }
  .menu a, .link { padding: 8px 7px; font-size: .88rem; }
  .menu .full { display: none; }
  .menu .short { display: inline; }
  /* etichetta su due righe: il nome resta leggibile per intero */
  .umd { height: auto; flex-wrap: wrap; gap: 4px 8px; padding: 5px 4px 5px 8px; }
  .umd .name { flex-basis: 100%; }
  .umd .ctl { margin-left: auto; }
  .tile.expanded .umd { height: auto; }
  .tile.expanded .meter { width: 84px; padding-left: 34px; padding-right: 8px; }
}
@media (max-width: 699px) and (orientation: portrait) { .num { display: none; } }

/* ---------- finestre di dialogo e pagine di servizio */
dialog {
  background: var(--panel); color: var(--text); border: 1px solid var(--line); border-radius: 8px;
  padding: 20px; width: min(92vw, 380px);
}
dialog::backdrop { background: #000000a6; }
h2 { margin: 0 0 14px; font-size: 1.1rem; font-weight: 650; }
.field { display: block; margin-bottom: 12px; }
.field span { display: block; margin-bottom: 4px; color: var(--dim); font-size: .85rem; }
input[type="text"], input[type="password"], input[type="number"] {
  width: 100%; height: 38px; padding: 0 10px;
  background: #0f1011; border: 1px solid var(--line); border-radius: 6px;
}
input:focus { border-color: var(--amber); outline: none; }
.btn {
  height: 38px; padding: 0 14px; border-radius: 6px; cursor: pointer;
  background: #ffffff14; border: 1px solid var(--line); white-space: nowrap;
}
.btn:hover { background: #ffffff24; }
.btn.primary { background: var(--amber); border-color: var(--amber); color: #111; font-weight: 650; }
.btn.primary:hover { background: #ffc233; }
.btn.danger { color: #ff8d90; }
.btn:disabled { opacity: .45; cursor: default; }
.row-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; }
.msg { min-height: 1.4em; margin: 8px 0 0; font-size: .88rem; color: var(--dim); }
.msg.err { color: #ff8d90; }
.msg.ok { color: #8fd694; }

.login { min-height: 100%; display: grid; place-items: center; padding: 20px; }
.login form { width: min(100%, 340px); background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 24px; }
.login h1 { margin: 0 0 18px; font-size: 1.3rem; font-weight: 650; letter-spacing: .02em; }
.login .btn { width: 100%; margin-top: 6px; }

.admin { max-width: 1180px; margin: 0 auto; padding: 20px 12px 60px; }
.admin section { margin-bottom: 36px; }
.admin p.hint { margin: -6px 0 14px; color: var(--dim); max-width: 70ch; }
/* gruppo di stream di una pagina della griglia */
.pgroup { margin-bottom: 30px; }
.phead { display: flex; align-items: flex-end; gap: 8px; flex-wrap: wrap; padding: 10px 8px; margin-bottom: 6px; background: #ffffff0a; border-radius: 6px; }
.phead .field { margin: 0; flex: 0 1 320px; }
.phead .msg { margin: 0 0 9px; min-height: 0; }
.srow, .urow {
  display: grid; gap: 8px; align-items: center;
  padding: 8px; border-top: 1px solid var(--line);
}
.srow { grid-template-columns: 2.2em minmax(120px, 1.3fr) minmax(140px, 1.5fr) 92px minmax(150px, 1.4fr) 84px 164px; }
.srow .acts { display: flex; gap: 6px; }
.srow .n { color: var(--dim); font-variant-numeric: tabular-nums; }
.srow .pass { display: flex; gap: 4px; }
.srow .pass input { min-width: 0; }
.srow .pass .btn { padding: 0 8px; font-size: .8rem; }
.srow label.on { display: flex; align-items: center; gap: 6px; white-space: nowrap; }
.srow .msg { grid-column: 2 / -1; margin: 0; min-height: 0; }
.shead { color: var(--dim); font-size: .82rem; border-top: 0; padding-bottom: 2px; }
.urow { grid-template-columns: minmax(120px, 1fr) 140px auto auto; }
.newuser { display: grid; grid-template-columns: minmax(120px, 1fr) minmax(140px, 1fr) auto auto; gap: 8px; align-items: center; padding: 12px 8px; border-top: 1px solid var(--line); }
.newuser label.on { display: flex; align-items: center; gap: 6px; white-space: nowrap; }
@media (max-width: 899px) {
  .shead { display: none; }
  .srow { grid-template-columns: 2.2em 1fr 92px; }
  .srow .f-name { grid-column: 2 / -1; }
  .srow .f-host { grid-column: 2 / 3; }
  .srow .pass { grid-column: 2 / -1; }
  .srow label.on { grid-column: 2 / -1; }
  .srow .acts { grid-column: 2 / -1; }
  .urow { grid-template-columns: 1fr auto; }
  .urow .role { grid-column: 1 / 2; color: var(--dim); }
  .newuser { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: no-preference) {
  .ctl button, .btn { transition: background-color .12s; }
}