:root {
  color-scheme: dark;
  --bg: #101311;
  --surface: #171b19;
  --surface-strong: #1d221f;
  --line: #303633;
  --line-strong: #515a56;
  --text: #f1f3f2;
  --muted: #aeb5b1;
  --quiet: #7f8883;
  --accent: #88d3bd;
  --accent-strong: #a2decd;
  --danger: #e0a09c;
  --warning: #d5bd8a;
  --radius: 6px;
}

* { box-sizing: border-box; }

html,
body { min-height: 100%; }

body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

button,
input,
select { font: inherit; }

button,
select,
input[type="range"] { cursor: pointer; }

button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.app-shell {
  width: min(1440px, 100%);
  min-height: 100vh;
  margin: 0 auto;
  padding: max(12px, env(safe-area-inset-top)) clamp(16px, 3vw, 38px) max(24px, env(safe-area-inset-bottom));
}

.topbar {
  display: flex;
  min-height: 58px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--line);
}

.brand {
  color: var(--text);
  font-size: 16px;
  font-weight: 720;
  letter-spacing: 0.01em;
  text-decoration: none;
  white-space: nowrap;
}

.topbar-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 14px;
}

.language-switcher {
  display: inline-grid;
  grid-template-columns: repeat(2, auto);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.language-switcher button {
  min-height: 32px;
  padding: 0 10px;
  border: 0;
  border-right: 1px solid var(--line);
  color: var(--quiet);
  background: transparent;
  font-size: 11px;
  font-weight: 650;
}

.language-switcher button:last-child { border-right: 0; }

.language-switcher button[aria-pressed="true"] {
  color: var(--text);
  background: var(--surface-strong);
}

.connection-pill {
  display: inline-flex;
  min-height: 32px;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 650;
}

.status-dot {
  width: 7px;
  height: 7px;
  background: var(--quiet);
}

.connection-pill[data-state="working"] .status-dot { background: var(--warning); }
.connection-pill[data-state="connected"] .status-dot { background: var(--accent); }
.connection-pill[data-state="error"] .status-dot { background: var(--danger); }

.layout-toggle {
  min-height: 32px;
  padding: 0;
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  color: var(--muted);
  background: transparent;
  font-size: 11px;
  font-weight: 650;
  zoom: var(--layout-control-scale, 1);
}

.layout-toggle:hover { color: var(--text); }

.pairing-view {
  display: grid;
  min-height: calc(100vh - 82px);
  align-items: center;
  justify-items: center;
  padding: 52px 0 88px;
}

.pairing-card {
  width: min(640px, 100%);
  padding: 38px 0 34px;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

h1 {
  max-width: 14ch;
  margin: 0;
  font-size: clamp(32px, 5vw, 46px);
  font-weight: 680;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.lead {
  max-width: 52ch;
  margin: 16px 0 32px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

form label,
.torch-card label {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 650;
}

#invite-code {
  width: 100%;
  height: 62px;
  padding: 0 18px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  outline: none;
  color: var(--text);
  background: var(--surface);
  font-size: clamp(26px, 6vw, 36px);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.16em;
  text-align: center;
}

#invite-code:focus { border-color: var(--accent); }

.field-help,
.form-error {
  min-height: 18px;
  margin: 8px 0 14px;
  color: var(--quiet);
  font-size: 11px;
}

.form-error { color: var(--danger); }

.primary-button {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  color: #07120e;
  background: var(--accent);
  font-weight: 720;
}

.primary-button:hover { background: var(--accent-strong); }
.primary-button:disabled { cursor: wait; opacity: 0.55; }

.privacy-note {
  display: grid;
  gap: 6px;
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--quiet);
  font-size: 11px;
  line-height: 1.7;
}

.privacy-note strong {
  color: var(--muted);
  font-size: 12px;
}

.viewer-view {
  --video-frame-height: clamp(320px, 48vh, 560px);
  padding: 24px 0 0;
}

.viewer-view[data-video-size="compact"] { --video-frame-height: clamp(240px, 34vh, 360px); }
.viewer-view[data-video-size="large"] { --video-frame-height: clamp(440px, 66vh, 760px); }

.viewer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 310px;
  gap: 28px;
}

.video-column { min-width: 0; }

.video-frame {
  position: relative;
  display: grid;
  height: var(--video-frame-height);
  min-height: 0;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: #050706;
}

#remote-video {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
  object-fit: contain;
  background: #050706;
  transform: translate(-50%, -50%);
  transform-origin: center;
  filter: var(--low-light-filter, none);
}

.video-placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 8px;
  padding: 30px;
  color: var(--quiet);
  text-align: center;
}

.video-placeholder strong {
  color: var(--text);
  font-size: 18px;
  font-weight: 650;
}

.video-placeholder span:last-child {
  max-width: 46ch;
  font-size: 11px;
  line-height: 1.6;
}

.pulse-ring {
  width: 24px;
  height: 24px;
  margin-bottom: 8px;
  border: 2px solid var(--line-strong);
  border-top-color: var(--accent);
  /* deslop-ignore-next-line 19 -- a circular track is functional for rotation */
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.video-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--text);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.08em;
}

.video-badge::before {
  width: 6px;
  height: 6px;
  background: var(--accent);
  content: "";
}

.video-badge[hidden] { display: none; }

.low-light-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 4px 7px;
  border: 1px solid var(--line-strong);
  color: var(--text);
  background: rgba(5, 7, 6, 0.78);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.low-light-badge[hidden],
.low-light-card[hidden] { display: none; }

.controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(112px, 1fr));
  gap: 8px;
  margin-top: 10px;
}

.control-button,
.toggle-button,
.text-button {
  min-height: 40px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--text);
  background: var(--surface);
  font-size: 12px;
  font-weight: 650;
  transition: background-color 140ms ease, border-color 140ms ease, color 140ms ease;
}

.control-button:hover,
.toggle-button:hover { background: var(--surface-strong); }

.control-button[aria-pressed="true"] {
  border-color: var(--accent);
  color: #07120e;
  background: var(--accent);
}

.control-button.danger { color: var(--danger); }
.control-button.danger:hover { border-color: var(--danger); }

.side-panel {
  display: grid;
  align-content: start;
  gap: 30px;
}

.panel-card {
  padding: 14px 0 0;
  border-top: 1px solid var(--line-strong);
}

.panel-heading {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 14px;
}

.panel-card h2 {
  margin: 0 0 18px;
  font-size: 15px;
  font-weight: 700;
}

.settings-disclosure-card {
  padding-top: 0;
}

.settings-disclosure summary {
  display: flex;
  min-height: 44px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--text);
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
  list-style: none;
}

.settings-disclosure summary::-webkit-details-marker { display: none; }

.settings-disclosure summary::after {
  width: 7px;
  height: 7px;
  border-right: 1px solid var(--quiet);
  border-bottom: 1px solid var(--quiet);
  color: var(--quiet);
  content: "";
  transform: rotate(45deg) translate(-2px, 2px);
  transition: transform 140ms ease;
}

.settings-disclosure[open] summary::after {
  transform: rotate(-135deg) translate(-2px, 2px);
}

.settings-disclosure summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.settings-disclosure-content {
  padding: 4px 0 14px;
}

.diagnostic-grid {
  display: grid;
  margin: 0;
  border-top: 1px solid var(--line);
}

.diagnostic-grid > div {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: 10px;
  padding: 7px 0;
  border-bottom: 1px solid var(--line);
  font-size: 10px;
}

.diagnostic-grid dt { color: var(--quiet); }

.diagnostic-grid dd {
  margin: 0;
  overflow-wrap: anywhere;
  color: var(--text);
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.diagnostic-history-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 14px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 650;
}

.diagnostic-history {
  max-height: 132px;
  margin: 8px 0 0;
  padding: 0;
  overflow: auto;
  color: var(--quiet);
  font-size: 10px;
  line-height: 1.5;
  list-style: none;
}

.diagnostic-history li {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 8px;
  padding: 3px 0;
}

.diagnostic-history time { font-variant-numeric: tabular-nums; }

.diagnostic-copy-status {
  min-height: 15px;
  margin: 5px 0 0;
  color: var(--accent);
  font-size: 10px;
}

.toggle-button {
  min-width: 52px;
  min-height: 30px;
  background: transparent;
  font-size: 10px;
}

.toggle-button[aria-pressed="true"] {
  border-color: var(--accent);
  color: var(--accent);
  background: transparent;
}

.text-button {
  min-height: auto;
  padding: 2px 0;
  border: 0;
  color: var(--quiet);
  background: transparent;
  font-size: 11px;
}

.text-button:hover { color: var(--text); }

#torch-level {
  width: 100%;
  accent-color: var(--accent);
}

.camera-settings-card {
  min-width: 0;
}

.camera-control-stage {
  min-height: 116px;
  padding: 12px;
  border: 1px solid var(--line);
  background: var(--surface);
}

.camera-setting-control {
  display: grid;
  gap: 10px;
}

.camera-setting-heading,
.camera-setting-control label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 650;
}

.camera-toggle-row {
  padding-top: 3px;
}

.camera-setting-control input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.camera-setting-control select {
  width: 100%;
  min-height: 36px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--text);
  background: var(--surface-strong);
  font-size: 12px;
}

.camera-setting-control button:disabled,
.camera-setting-control input:disabled,
.camera-setting-control select:disabled {
  cursor: not-allowed;
  opacity: 0.42;
}

.camera-settings-status {
  min-height: 16px;
  margin: 10px 0 0;
  color: var(--quiet);
  font-size: 10px;
  line-height: 1.5;
}

.camera-settings-status[data-state="error"] {
  color: var(--warning);
}

.camera-setting-tabs {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin-top: 8px;
  border: 1px solid var(--line);
}

.camera-setting-tabs button {
  min-width: 0;
  min-height: 42px;
  padding: 5px 2px;
  overflow: hidden;
  border: 0;
  border-right: 1px solid var(--line);
  color: var(--quiet);
  background: transparent;
  font-size: 9px;
  font-weight: 650;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.camera-setting-tabs button:last-child {
  border-right: 0;
}

.camera-setting-tabs button[aria-selected="true"] {
  color: var(--accent);
  background: var(--surface-strong);
}

.low-light-card label {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin: 14px 0 7px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 650;
}

#low-light-preset {
  width: 100%;
  min-height: 36px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--text);
  background: var(--surface);
  font-size: 12px;
}

#low-light-brightness,
#low-light-contrast,
#low-light-saturation {
  width: 100%;
  accent-color: var(--accent);
}

#low-light-brightness:disabled,
#low-light-contrast:disabled,
#low-light-saturation:disabled { opacity: 0.45; }

.setting-help {
  margin: 14px 0 0;
  color: var(--quiet);
  font-size: 10px;
  line-height: 1.55;
}

.display-card label,
.setting-label {
  display: block;
  margin: 0 0 7px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 650;
}

#video-size {
  width: 100%;
  min-height: 36px;
  margin-bottom: 18px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--text);
  background: var(--surface);
  font-size: 12px;
}

.segmented-control {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid var(--line);
  border-radius: 3px;
}

.segmented-control button {
  min-height: 34px;
  padding: 5px;
  border: 0;
  border-right: 1px solid var(--line);
  color: var(--quiet);
  background: transparent;
  font-size: 11px;
  font-weight: 650;
}

.segmented-control button:last-child { border-right: 0; }

.segmented-control button[aria-pressed="true"] {
  color: var(--text);
  background: var(--surface-strong);
}

.event-list {
  max-height: 380px;
  margin: 0;
  padding: 0;
  overflow: auto;
  list-style: none;
}

.event-list li {
  display: grid;
  grid-template-columns: 7px minmax(0, 1fr) auto;
  gap: 9px;
  align-items: start;
  padding: 10px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
  line-height: 1.5;
}

.event-list li::before {
  width: 6px;
  height: 6px;
  margin-top: 5px;
  background: var(--accent);
  content: "";
}

.event-list li[data-severity="warning"]::before { background: var(--warning); }
.event-list li[data-severity="critical"]::before { background: var(--danger); }
.event-list time { color: var(--quiet); font-variant-numeric: tabular-nums; }
.event-list .empty-event { display: block; border-top: 0; }
.event-list .empty-event::before { display: none; }

.ad-region {
  display: grid;
  min-height: 300px;
  margin: 28px auto 0;
  padding: 12px 8px 8px;
  place-items: center;
  overflow: hidden;
  border-top: 1px solid var(--line);
}

.ad-label {
  color: var(--quiet);
  font-size: 9px;
  letter-spacing: 0.06em;
}

#viewer-test-banner {
  display: grid;
  width: 300px;
  min-height: 250px;
  place-items: center;
}

.ad-region[data-ad-provider="adsense"] { min-height: 120px; }
.ad-region[data-ad-provider="adsense"] #viewer-test-banner { width: min(100%, 970px); min-height: 90px; }
.adsbygoogle { width: 100%; min-width: 0; }

.ad-status {
  margin: 4px 0 0;
  color: var(--quiet);
  font-size: 10px;
  text-align: center;
}

.ad-status[data-state="error"] { color: var(--warning); }

.policy-footer {
  display: flex;
  width: min(1180px, calc(100% - 28px));
  margin: 24px auto 0;
  padding: 20px 0 28px;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 18px;
  border-top: 1px solid var(--line);
  color: var(--quiet);
  font-size: 10px;
}

.policy-footer a {
  color: inherit;
  text-underline-offset: 3px;
}

[hidden] { display: none !important; }

html[data-layout-mode="desktop"] body { min-width: 960px; }

html[data-layout-mode="mobile"] .app-shell {
  width: min(620px, 100%);
  padding-inline: 14px;
}

html[data-layout-mode="mobile"] .topbar { align-items: flex-start; padding-block: 10px; }
html[data-layout-mode="mobile"] .topbar-actions { display: grid; grid-template-columns: auto auto; gap: 6px 10px; }
html[data-layout-mode="mobile"] .connection-pill { justify-self: end; }
html[data-layout-mode="mobile"] .layout-toggle { justify-self: end; }
html[data-layout-mode="mobile"] .pairing-view { align-items: start; padding-top: 40px; }
html[data-layout-mode="mobile"] .pairing-card { padding: 28px 0; }
html[data-layout-mode="mobile"] h1 { font-size: 32px; }
html[data-layout-mode="mobile"] .viewer-view { --video-frame-height: clamp(300px, 50vh, 470px); }
html[data-layout-mode="mobile"] .viewer-view[data-video-size="compact"] { --video-frame-height: clamp(220px, 34vh, 300px); }
html[data-layout-mode="mobile"] .viewer-view[data-video-size="large"] { --video-frame-height: clamp(400px, 66vh, 600px); }
html[data-layout-mode="mobile"] .viewer-grid { grid-template-columns: 1fr; }
html[data-layout-mode="mobile"] .controls { grid-template-columns: repeat(2, minmax(0, 1fr)); }
html[data-layout-mode="mobile"] .side-panel { grid-template-columns: 1fr; }
html[data-layout-mode="mobile"] .display-card { grid-column: auto; }
html[data-layout-mode="mobile"] .event-list { max-height: 230px; }

@media (max-width: 900px) {
  .viewer-grid { grid-template-columns: 1fr; }
  .side-panel { grid-template-columns: 1fr 1fr; gap: 28px 22px; }
  .display-card { grid-column: 1 / -1; }
  .camera-settings-card { grid-column: 1 / -1; }
  .diagnostic-card { grid-column: 1 / -1; }
  .event-card { grid-column: 1 / -1; }
}

@media (max-width: 620px) {
  .app-shell { padding-inline: 14px; }
  .topbar { align-items: flex-start; padding-block: 10px; }
  .topbar-actions { display: grid; grid-template-columns: auto auto; gap: 6px 10px; }
  .connection-pill { justify-self: end; }
  .layout-toggle { justify-self: end; }
  .pairing-view { align-items: start; padding-top: 40px; }
  .pairing-card { padding: 28px 0; }
  .viewer-view { --video-frame-height: clamp(300px, 50vh, 470px); }
  .viewer-view[data-video-size="compact"] { --video-frame-height: clamp(220px, 34vh, 300px); }
  .viewer-view[data-video-size="large"] { --video-frame-height: clamp(400px, 66vh, 600px); }
  .controls { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .side-panel { grid-template-columns: 1fr; }
  .display-card,
  .camera-settings-card,
  .diagnostic-card,
  .event-card { grid-column: auto; }
}

@media (max-width: 420px) {
  .topbar { display: grid; grid-template-columns: 1fr; gap: 8px; }
  .topbar-actions { justify-content: stretch; }
  .language-switcher { justify-self: start; }
  .connection-pill,
  .layout-toggle { justify-self: end; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

html[data-layout-mode="desktop"] .app-shell {
  width: min(1440px, 100%);
  padding-inline: clamp(16px, 3vw, 38px);
}

html[data-layout-mode="desktop"] .topbar { align-items: center; padding-block: 0; }
html[data-layout-mode="desktop"] .topbar-actions { display: flex; align-items: center; gap: 14px; }
html[data-layout-mode="desktop"] .connection-pill,
html[data-layout-mode="desktop"] .layout-toggle { justify-self: auto; }
html[data-layout-mode="desktop"] .pairing-view { align-items: center; padding-top: 52px; }
html[data-layout-mode="desktop"] .pairing-card { padding: 38px 0 34px; }
html[data-layout-mode="desktop"] h1 { font-size: clamp(32px, 5vw, 46px); }
html[data-layout-mode="desktop"] .viewer-view { --video-frame-height: clamp(320px, 48vh, 560px); }
html[data-layout-mode="desktop"] .viewer-view[data-video-size="compact"] { --video-frame-height: clamp(240px, 34vh, 360px); }
html[data-layout-mode="desktop"] .viewer-view[data-video-size="large"] { --video-frame-height: clamp(440px, 66vh, 760px); }
html[data-layout-mode="desktop"] .viewer-grid { grid-template-columns: minmax(0, 1fr) 310px; }
html[data-layout-mode="desktop"] .controls { grid-template-columns: repeat(auto-fit, minmax(112px, 1fr)); }
html[data-layout-mode="desktop"] .side-panel { grid-template-columns: 1fr; }
html[data-layout-mode="desktop"] .display-card,
html[data-layout-mode="desktop"] .event-card { grid-column: auto; }
html[data-layout-mode="desktop"] .event-list { max-height: 380px; }