/* Laboratorio di prova di RTC Core: strumento sobrio, l'unico elemento forte è il palco video. */
:root {
  --canvas: #eceef1;
  --surface: #ffffff;
  --ink: #16191d;
  --muted: #59616b;
  --line: #d4d8dd;
  --line-soft: #e4e7ea;
  --stage: #1a1d21;
  --stage-ink: #f1f3f5;
  --live: #1b8a57;
  --live-soft: #e3f3ea;
  --stop: #c0392b;
  --wait: #9a6400;
  --wait-soft: #fbf1dc;
  --focus: #2b62d9;
  --radius: 10px;
  --font:
    -apple-system, BlinkMacSystemFont, 'Segoe UI Variable', 'Segoe UI', Roboto,
    'Helvetica Neue', Arial, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --canvas: #121417;
    --surface: #1a1d21;
    --ink: #e7e9ec;
    --muted: #9aa2ac;
    --line: #2d3238;
    --line-soft: #24282d;
    --stage: #0c0e10;
    --live: #3fbf82;
    --live-soft: #173426;
    --stop: #e2604f;
    --wait: #e0a43c;
    --wait-soft: #33290f;
    --focus: #7aa2ff;
    color-scheme: dark;
  }
}

* {
  box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font: 400 15px/1.5 var(--font);
  font-variant-numeric: tabular-nums;
}
h1,
h2,
h3,
p,
dl,
dd {
  margin: 0;
}
h2 {
  font-size: 1.25rem;
  line-height: 1.3;
  font-weight: 650;
  letter-spacing: -0.01em;
}
h3 {
  font-size: 0.95rem;
  font-weight: 650;
}
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}
[hidden] {
  display: none !important;
}
:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}
.muted,
.lead,
.fine {
  color: var(--muted);
}
.lead {
  margin-top: 4px;
  max-width: 62ch;
}
.fine {
  font-size: 0.82rem;
  margin-top: 12px;
  max-width: 60ch;
}

/* Barra in alto */
.topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 28px;
  height: 56px;
  padding: 0 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.wordmark {
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  white-space: nowrap;
}
.wordmark span {
  color: var(--muted);
  font-weight: 400;
  margin-left: 4px;
}
.tabs {
  display: flex;
  height: 100%;
  gap: 4px;
}
.nav {
  height: 100%;
  padding: 0 12px;
  border: 0;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  background: none;
  color: var(--muted);
  font: inherit;
  cursor: pointer;
}
.nav:hover {
  color: var(--ink);
}
.nav.active {
  color: var(--ink);
  border-bottom-color: var(--ink);
  font-weight: 600;
}
.server-state {
  margin-left: auto;
  font-size: 0.85rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}
.server-state::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--line);
}
.server-state.ok::before {
  background: var(--live);
}
.server-state.down::before {
  background: var(--stop);
}

main {
  padding: 24px;
}
.view {
  max-width: 1200px;
  margin: 0 auto;
}

/* Controlli di base */
button,
.button {
  font: inherit;
  font-size: 0.9rem;
  font-weight: 550;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
button:hover:not(:disabled) {
  border-color: var(--muted);
}
button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
button.primary {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--surface);
}
button.primary:hover:not(:disabled) {
  opacity: 0.88;
}
button.large {
  min-height: 48px;
  padding: 0 24px;
  font-size: 1rem;
}
button.small {
  min-height: 32px;
  padding: 0 10px;
  font-size: 0.85rem;
}
button.link {
  border: 0;
  background: none;
  padding: 0;
  min-height: auto;
  color: var(--focus);
  font-weight: 500;
}
button.stop {
  background: var(--stop);
  border-color: var(--stop);
  color: #fff;
}
button.stop-outline {
  color: var(--stop);
  border-color: currentColor;
}
.field {
  display: grid;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 550;
  color: var(--muted);
}
input,
select {
  font: inherit;
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  min-height: 40px;
  padding: 0 12px;
  width: 100%;
  min-width: 0;
}
input:focus-visible,
select:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 0;
  border-color: transparent;
}
.check {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--muted);
}
.check input {
  width: 16px;
  height: 16px;
  min-height: 0;
  accent-color: var(--live);
}

/* Chi apre un invito non vede gli strumenti di debug finché non entra. */
body[data-view='invite'] .tabs {
  visibility: hidden;
}

/* Prove */
.notice {
  font-size: 0.88rem;
  color: var(--muted);
  margin-bottom: 20px;
}
.console-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 24px;
  align-items: start;
}
.work {
  display: grid;
  gap: 20px;
}
#demo-area {
  display: grid;
  gap: 20px;
}
.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
}
.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
}
.lab-form {
  display: grid;
  grid-template-columns: minmax(180px, 1.4fr) 90px minmax(180px, 1.2fr) auto;
  gap: 12px;
  align-items: end;
  margin-top: 20px;
}
.inline-form {
  display: flex;
  gap: 12px;
  align-items: end;
  margin-top: 20px;
}
.grow {
  flex: 1;
}
.stack {
  display: grid;
  gap: 14px;
  margin-top: 20px;
  max-width: 460px;
}
.stack button {
  justify-self: start;
}

.invites {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
}
.invites:empty {
  display: none;
}
.invite-row {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr) auto auto;
  gap: 10px;
  align-items: center;
  padding: 10px 0;
  border-top: 1px solid var(--line-soft);
}
.invite-who {
  display: grid;
  line-height: 1.3;
}
.invite-who small {
  color: var(--muted);
}
.invite-row input {
  font-size: 0.82rem;
  color: var(--muted);
  min-height: 36px;
}
.invite-row.owner {
  border-top: 1px solid var(--line);
  margin-top: 6px;
  padding-top: 14px;
}
.tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 650;
  padding: 1px 7px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--surface);
  margin-left: 6px;
  vertical-align: 1px;
}

.about {
  padding: 4px 0 0;
}
.about h2 {
  font-size: 1rem;
  margin-bottom: 12px;
}
.facts {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 16px;
  font-size: 0.88rem;
}
.facts dt {
  color: var(--muted);
}
.facts dd {
  text-align: right;
  font-weight: 550;
}
.facts.tight {
  gap: 4px 12px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
th {
  text-align: left;
  font-weight: 550;
  color: var(--muted);
  padding: 8px 12px 8px 0;
  border-bottom: 1px solid var(--line);
}
td {
  padding: 10px 12px 10px 0;
  border-bottom: 1px solid var(--line-soft);
}
.table-scroll {
  overflow-x: auto;
  margin-top: 12px;
}
.empty {
  color: var(--muted);
  padding: 12px 0;
}

/* Pagina dell'invito */
.invite {
  min-height: calc(100vh - 140px);
  display: grid;
  place-items: center;
}
.invite-panel {
  max-width: 440px;
  text-align: left;
}
.invite-panel h2 {
  font-size: 1.75rem;
  letter-spacing: -0.02em;
}
.invite-panel > p:first-of-type {
  margin-top: 10px;
  color: var(--muted);
  font-size: 1.02rem;
}
.invite-panel form {
  margin-top: 28px;
}

/* Chiamata */
.call-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}
.call-heading {
  min-width: 0;
  margin-right: auto;
}
.call-heading h2 {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
#call-subtitle {
  color: var(--muted);
  font-size: 0.9rem;
}
.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--line-soft);
  color: var(--muted);
  white-space: nowrap;
}
.status::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
}
.status.live {
  background: var(--live-soft);
  color: var(--live);
}
.status.waiting {
  background: var(--wait-soft);
  color: var(--wait);
}
button.code {
  font-size: 0.85rem;
  min-height: 32px;
}
.call-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 20px;
  align-items: start;
}
.stage-wrap {
  min-width: 0;
}
.stage {
  background: var(--stage);
  border-radius: 14px 14px 0 0;
  min-height: 320px;
  padding: 12px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-content: center;
  gap: 10px;
}
.stage:has(.pinned) {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.stage-placeholder {
  grid-column: 1 / -1;
  display: grid;
  place-items: center;
  color: #8e959d;
}
.video-tile {
  position: relative;
  background: #000;
  border-radius: 8px;
  overflow: hidden;
  outline: 2px solid transparent;
  outline-offset: -2px;
  cursor: pointer;
  aspect-ratio: 16 / 9;
}
.video-tile video {
  width: 100%;
  height: 100%;
  object-fit: contain; /* niente ritagli: le mani devono restare nell'inquadratura */
  display: block;
}
.video-tile.pinned {
  grid-column: 1 / -1;
  outline-color: var(--live);
}
.video-label {
  position: absolute;
  left: 8px;
  right: 8px;
  bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
  pointer-events: none;
}
.video-label span {
  margin-right: auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: #fff;
  font-size: 0.82rem;
  font-weight: 600;
  background: rgb(0 0 0 / 0.55);
  padding: 3px 8px;
  border-radius: 6px;
}
.video-label button {
  pointer-events: auto;
  min-height: 28px;
  padding: 0 8px;
  font-size: 0.78rem;
  color: #fff;
  background: rgb(0 0 0 / 0.55);
  border-color: transparent;
  opacity: 0;
  transition: opacity 0.15s;
}
.video-tile:hover .video-label button,
.video-label button:focus-visible {
  opacity: 1;
}
.controls {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px;
  background: var(--stage);
  border-top: 1px solid rgb(255 255 255 / 0.08);
  border-radius: 0 0 14px 14px;
}
.controls button:not(.stop) {
  background: #2a2e34;
  border-color: #2a2e34;
  color: var(--stage-ink);
}
.controls button.off {
  background: #f1f3f5;
  border-color: #f1f3f5;
  color: #16191d;
}
.controls .stop {
  margin-left: 12px;
}

.captions {
  margin-top: 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.captions-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 16px;
}
.state-text {
  font-size: 0.85rem;
  color: var(--muted);
  margin-right: auto;
}
.caption-lines {
  margin-top: 12px;
  display: grid;
  gap: 6px;
  min-height: 2.6em;
  font-size: 1.05rem;
  line-height: 1.45;
}
.caption-lines .muted {
  font-size: 0.88rem;
}
.caption-line strong {
  font-weight: 650;
  margin-right: 8px;
}
.caption-line.partial span {
  color: var(--muted);
}

.side {
  display: grid;
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.side-block {
  padding: 16px;
  border-top: 1px solid var(--line-soft);
}
.side-block:first-child {
  border-top: 0;
}
.side-block h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}
.count {
  font-size: 0.75rem;
  min-width: 20px;
  height: 20px;
  border-radius: 999px;
  display: inline-grid;
  place-items: center;
  background: var(--line-soft);
  color: var(--muted);
}
.waiting-block.has-waiting {
  background: var(--wait-soft);
  border-radius: var(--radius) var(--radius) 0 0;
}
.waiting-block.has-waiting .count {
  background: var(--wait);
  color: #fff;
}
.person {
  padding: 8px 0;
  border-top: 1px solid var(--line-soft);
}
.person:first-child {
  border-top: 0;
  padding-top: 0;
}
.person-name {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-weight: 600;
}
.person-name small {
  color: var(--muted);
  font-weight: 400;
  font-size: 0.82rem;
}
.person-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}
.person-actions button {
  min-height: 28px;
  padding: 0 8px;
  font-size: 0.8rem;
}
.stat-line {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 2px;
}
.tool-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.owner-tools:not(:has(button:not([hidden]):not(:disabled))) {
  display: none;
}

/* Rendicontazione */
.usage-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 16px;
}
.legend {
  list-style: none;
  padding: 0;
  margin: 16px 0 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  font-size: 0.85rem;
  color: var(--muted);
}
.swatch {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  margin-right: 8px;
}
.swatch.proposed,
.bar span {
  background: var(--live);
}
.swatch.review,
.bar {
  background: var(--wait);
}
#usage-cards {
  display: grid;
  gap: 16px;
}
.usage-card h3 {
  font-size: 1rem;
}
.usage-card code {
  font-size: 0.78rem;
  color: var(--muted);
}
.usage-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin: 16px 0 12px;
}
.usage-stats small {
  display: block;
  color: var(--muted);
  font-size: 0.82rem;
}
.usage-stats strong {
  font-size: 1.15rem;
  font-weight: 650;
}
.bar {
  height: 6px;
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 16px;
}
.bar span {
  display: block;
  height: 100%;
}

#toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  max-width: min(560px, calc(100vw - 32px));
  background: var(--ink);
  color: var(--surface);
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 0.9rem;
  z-index: 20;
  box-shadow: 0 6px 24px rgb(0 0 0 / 0.18);
}

@media (max-width: 960px) {
  .console-grid,
  .call-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .lab-form {
    grid-template-columns: 1fr 90px;
  }
  .lab-form .secret,
  .lab-form button {
    grid-column: 1 / -1;
  }
}
@media (max-width: 640px) {
  main {
    padding: 16px;
  }
  .topbar {
    gap: 12px;
    padding: 0 16px;
  }
  .wordmark span,
  .server-state {
    font-size: 0;
    gap: 0;
  }
  .wordmark span {
    display: none;
  }
  .nav {
    padding: 0 8px;
    font-size: 0.9rem;
  }
  .panel {
    padding: 18px;
  }
  .lab-form {
    grid-template-columns: 1fr 80px;
  }
  .invite-row {
    grid-template-columns: 1fr auto auto;
  }
  .invite-row input {
    grid-column: 1 / -1;
    grid-row: 2;
  }
  .call-head {
    flex-wrap: wrap;
  }
  .call-heading {
    flex-basis: 100%;
  }
  .stage {
    min-height: 220px;
    grid-template-columns: 1fr;
    padding: 8px;
  }
  .stage:has(.pinned) {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .controls .stop {
    margin-left: 0;
  }
  .usage-head {
    flex-direction: column;
    align-items: start;
  }
  .usage-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
}