:root {
  color-scheme: dark;
  --brand: #2563eb;
  --brand-dark: #0f172a;
  --accent: #22c55e;
  --ink: #e8eefb;
  --muted: #91a0b8;
  --surface: #111a2b;
  --surface-2: #172238;
  --line: #263650;
  --danger: #ef4444;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html { background: #08101f; }
body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% -10%, color-mix(in srgb, var(--brand) 28%, transparent), transparent 35rem),
    radial-gradient(circle at 100% 20%, #12365c55, transparent 30rem),
    #08101f;
}
a { color: #8ab4ff; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: .45; }
.hidden { display: none !important; }
.operator-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 70px;
  border-bottom: 1px solid #ffffff12;
}
.brand { display: flex; align-items: center; gap: 12px; color: var(--ink); }
.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  object-fit: contain;
  padding: 5px;
  background: white;
  box-shadow: 0 8px 30px #0008;
}
.brand-copy strong { display: block; font-size: 15px; }
.brand-copy span { color: var(--muted); font-size: 12px; }
.toolbar, .hero-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.button {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 9px 16px;
  color: var(--ink);
  background: #172238cc;
  font-weight: 750;
}
.button:hover { border-color: #526b91; transform: translateY(-1px); }
.button.primary { border-color: transparent; background: linear-gradient(135deg, var(--brand), #1d4ed8); }
.button.danger { background: #7f1d1d; border-color: #b91c1c; }
.button.ghost { background: transparent; }
.button.small { min-height: 34px; padding: 6px 10px; border-radius: 9px; font-size: 12px; }
h1 { margin: 16px 0; font-size: clamp(42px, 6vw, 72px); line-height: .98; letter-spacing: -.055em; }
.hero-actions { margin-top: 30px; }
.card, .metric {
  border: 1px solid #ffffff16;
  background: linear-gradient(155deg, #182743e8, #0c1527e8);
  box-shadow: 0 25px 70px #0006;
}
.status-row { display: flex; gap: 10px; margin-top: 14px; }
.status-chip, .pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border-radius: 99px;
  padding: 6px 9px;
  color: var(--muted);
  background: #162238;
  font-size: 12px;
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: #64748b; }
.dot.ok { background: var(--accent); box-shadow: 0 0 0 5px #22c55e18; }
.dot.err { background: var(--danger); }
.card { border-radius: 18px; padding: 22px; }
.card h2, .card h3 { margin: 0 0 9px; }
.card p { margin: 0; color: var(--muted); line-height: 1.6; }
.auth-wrap { min-height: 100vh; display: grid; place-items: center; padding: 28px; }
.auth-card { width: min(440px, 100%); border: 1px solid #ffffff18; border-radius: 24px; padding: 28px; background: #111a2bf2; box-shadow: 0 28px 80px #0008; }
.auth-card h1 { margin: 24px 0 8px; font-size: 34px; }
.auth-card > p { color: var(--muted); margin-bottom: 24px; }
/* Homepage: la stessa card del login, centrata e senza campi. */
.home-card { text-align: center; }
.home-card .brand-mark { width: 88px; height: 88px; border-radius: 22px; padding: 10px; }
.home-card h1 { margin: 18px 0 26px; }
.home-card .hero-actions { justify-content: center; margin-top: 0; }
.home-card .status-row { justify-content: center; margin-top: 22px; }
.field { display: grid; gap: 7px; margin-bottom: 15px; }
/* `.field > span` per i campi costruiti in JS, dove l'etichetta e' uno span
   dentro una label che avvolge gia' il controllo: niente `for`, niente id. */
.field label, .field > span { color: #bac8dc; font-size: 12px; font-weight: 800; }
.field input, .field select, .field textarea, .operator-bar input, .operator-bar select {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 11px;
  padding: 10px 12px;
  color: var(--ink);
  background: #0b1425;
  outline: none;
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--brand); box-shadow: 0 0 0 3px #2563eb33; }
.field textarea { min-height: 90px; resize: vertical; }
.form-error { min-height: 20px; color: #fca5a5; font-size: 13px; }
.form-note { color: var(--muted); font-size: 12px; line-height: 1.5; }
.app-layout { min-height: 100vh; display: grid; grid-template-columns: 250px 1fr; }
.sidebar { position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; border-right: 1px solid #ffffff12; padding: 20px 16px; background: #0b1424e8; }
.sidebar .brand { padding: 4px 6px 24px; }
.side-nav { display: grid; gap: 6px; }
.side-nav button { width: 100%; border: 0; border-radius: 11px; padding: 11px 12px; color: var(--muted); background: transparent; text-align: left; font-weight: 750; }
.side-nav button:hover, .side-nav button.active { color: var(--ink); background: #ffffff0c; }
.side-foot { margin-top: auto; padding: 14px 6px 0; border-top: 1px solid #ffffff10; }
.main-area { min-width: 0; padding: 26px clamp(18px, 4vw, 48px) 50px; }
.page-head { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-bottom: 26px; }
.page-head h1 { margin: 0; font-size: 34px; }
.page-head p { margin: 6px 0 0; color: var(--muted); }
.panel { display: none; }
.panel.active { display: block; }
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.metric { border-radius: 16px; padding: 18px; }
.metric span { color: var(--muted); font-size: 12px; }
.metric strong { display: block; margin-top: 8px; font-size: 30px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 18px; }
.table-wrap { overflow: auto; border: 1px solid #ffffff14; border-radius: 16px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; background: #111a2baa; }
th, td { padding: 13px 14px; border-bottom: 1px solid #ffffff0d; text-align: left; }
th { color: var(--muted); font-size: 11px; text-transform: uppercase; }
.pill.ok { color: #bbf7d0; background: #14532d; }
.pill.warn { color: #fde68a; background: #78350f; }
.preview-logo { width: 180px; height: 80px; border: 1px dashed #4b6385; border-radius: 13px; object-fit: contain; padding: 10px; background: white; }
.operator-page { height: 100vh; display: grid; grid-template-rows: auto 1fr auto; overflow: hidden; }
.operator-bar { justify-content: flex-start; padding: 10px 16px; background: #0b1425f2; }
/* La barra puo' andare a capo invece di schiacciare i bottoni: con un nome di
   branding lungo, o il browser al 125%, anche sette elementi possono non
   starci. Il grid del body (auto 1fr auto) assorbe l'altezza in piu' da solo. */
.operator-bar { flex-wrap: wrap; }
/* Il body porta una classe sola e il resto segue: niente `hidden` sparsi nel
   JavaScript, che e' il modo in cui questa barra si era riempita. */
.session-idle .solo-live, .session-live .solo-idle { display: none; }
.session-tag {
  padding: 6px 11px;
  border: 1px solid #ffffff1a;
  border-radius: 9px;
  color: var(--ink);
  background: #0a1323;
  font-weight: 800;
  letter-spacing: .1em;
}
.operator-bar .brand { margin-right: 10px; }
.operator-bar input { width: 112px; min-height: 40px; }
.operator-bar select { width: auto; min-height: 40px; padding-right: 30px; cursor: pointer; }
.operator-bar select:disabled { opacity: .45; cursor: not-allowed; }
.operator-bar input.session-code { letter-spacing: .15em; font-weight: 800; }
.operator-stage { position: relative; min-height: 0; background: #030711; overflow: hidden; }
.operator-stage video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; }
.operator-overlay { position: absolute; inset: 0; outline: none; }
.operator-overlay[data-control="on"] { cursor: crosshair; }
.operator-empty { position: absolute; inset: 0; display: grid; place-items: center; pointer-events: none; text-align: center; color: var(--muted); }
.operator-empty strong { display: block; color: var(--ink); font-size: 20px; }
/* Il pannello vuoto ha pointer-events: none per lasciar passare i click al
   video sotto: i download vanno riattivati a mano, o non si cliccano. */
.operator-empty .hero-actions { justify-content: center; margin-top: 22px; pointer-events: auto; }
.operator-foot { display: flex; gap: 14px; align-items: center; min-height: 44px; padding: 7px 16px; border-top: 1px solid #ffffff12; color: var(--muted); background: #0b1425; font-size: 12px; }
.operator-log { margin-left: auto; max-width: 55%; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
/* Pannello Strumenti: stessa cornice della vecchia diagnostica, con le schede
   al posto del titolo. */
.tools-panel {
  position: fixed;
  right: 16px;
  bottom: 60px;
  z-index: 25;
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: min(560px, calc(100vw - 32px));
  max-height: min(70vh, 620px);
  border: 1px solid #ffffff20;
  border-radius: 14px;
  padding: 14px 16px;
  background: #0b1425f5;
  box-shadow: 0 22px 60px #000a;
}
.tools-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.tools-tabs { display: flex; gap: 4px; }
.tools-tab {
  border: 1px solid transparent;
  border-radius: 9px;
  padding: 6px 11px;
  color: var(--muted);
  background: transparent;
  font-size: 12px;
  font-weight: 700;
}
.tools-tab[aria-selected="true"] { border-color: #ffffff20; color: var(--ink); background: #1b2a43; }
.tools-pane { display: flex; flex-direction: column; gap: 10px; min-height: 0; overflow: auto; }
.tools-campo { color: var(--muted); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; }
.tools-pane select { width: 100%; min-height: 40px; }
.diag-body {
  margin: 0;
  overflow: auto;
  color: #cbd5e1;
  font: 11px/1.55 ui-monospace, SFMono-Regular, Menlo, monospace;
  white-space: pre;
  font-variant-numeric: tabular-nums;
}
.toggle { display: inline-flex; align-items: center; gap: 7px; font-weight: 700; }
.toggle input { width: 18px; height: 18px; accent-color: var(--accent); }
.toast { position: fixed; right: 20px; bottom: 20px; z-index: 30; max-width: 380px; border: 1px solid #ffffff20; border-radius: 12px; padding: 12px 15px; background: #1e2c44; box-shadow: 0 18px 50px #0008; opacity: 0; transform: translateY(20px); transition: .2s; }
.toast.show { opacity: 1; transform: translateY(0); }
@media (max-width: 920px) {
  .app-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; width: 100%; height: auto; }
  .side-nav { grid-template-columns: repeat(4, 1fr); }
  .side-foot { display: none; }
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .side-nav { grid-template-columns: repeat(2, 1fr); }
  .page-head { align-items: flex-start; flex-direction: column; }
  .operator-bar .brand-copy, .operator-log { display: none; }
  .operator-bar input { width: 92px; }
}

.mt-14 { margin-top: 14px; }
.mt-18 { margin-top: 18px; }

[hidden] { display: none !important; }

.recovery-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin: 0 0 18px;
  padding: 14px;
  list-style: none;
  border: 1px solid #ffffff18;
  border-radius: 14px;
  background: #0b1220;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 14px;
  letter-spacing: 0.06em;
}

.field-inline {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 16px 0;
  color: #bac8dc;
  font-size: 13px;
}

.field-inline input { width: 16px; height: 16px; }

/* Editor in linea del pannello utenti: sta dentro una cella che occupa tutta
   la riga, quindi i campi vanno messi in fila e mandati a capo da soli quando
   la tabella si stringe. `align-items: end` allinea i pulsanti al fondo dei
   campi, non al fondo delle etichette. */
.user-edit {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 12px;
  padding: 6px 0;
}

.user-edit .field { margin-bottom: 0; flex: 1 1 190px; }

.qr-frame {
  display: flex;
  justify-content: center;
  margin: 0 0 16px;
  padding: 14px;
  border-radius: 16px;
  /* Lo sfondo bianco è già dentro l'SVG; questa cornice allarga la zona chiara
     oltre la quiet zone, così il codice resta leggibile anche se il lettore
     inquadra storto sul pannello scuro. */
  background: #ffffff;
}

.qr-frame img {
  display: block;
  width: min(232px, 100%);
  height: auto;
  image-rendering: pixelated;
}

.fallback { margin-bottom: 15px; }

.fallback summary {
  cursor: pointer;
  color: #bac8dc;
  font-size: 13px;
  margin-bottom: 12px;
}

.fallback summary:hover { color: #e6edf7; }

/* Pannello appunti: riusa la cornice della diagnostica, cambia solo il corpo. */
.clip-text {
  width: 100%;
  resize: vertical;
  font: inherit;
  padding: 8px;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(0, 0, 0, 0.25);
  color: inherit;
}

.clip-actions {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

.clip-state {
  margin: 8px 0 0;
  font-size: 12px;
  opacity: 0.75;
}

/* Pannello file: riusa la cornice della diagnostica, cambia solo il corpo. */
.file-actions {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

.file-state {
  margin: 8px 0 0;
  font-size: 12px;
  opacity: 0.75;
}