:root {
  font-family:
    Inter,
    Segoe UI,
    system-ui,
    sans-serif;
  color: #e9effa;
  background: #0b1019;
  font-synthesis: none;
  --bg: #0b1019;
  --panel: #121b28;
  --panel2: #182436;
  --line: #26354a;
  --muted: #9eafc5;
  --accent: #8ee8df;
  --accent2: #c6f6ef;
  --ink: #10282b;
  --danger: #ff9aab;
  --radius: 20px;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: radial-gradient(ellipse at 78% 0%, #193a4755, transparent 48%), var(--bg);
  min-height: 100vh;
}
button,
input,
select,
textarea {
  font: inherit;
}
button,
a,
input,
select,
textarea {
  outline-offset: 5px;
}
button {
  cursor: pointer;
}
button:disabled {
  opacity: 0.38;
  cursor: not-allowed;
}
a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
.shell {
  max-width: 1280px;
  margin: auto;
  padding: 0 36px 64px;
}
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 100px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 38px;
}
.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  color: inherit;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.7px;
}
.brand-mark {
  background: var(--accent);
  color: var(--ink);
  width: 36px;
  height: 36px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  font-size: 26px;
}
.brand em {
  font-style: normal;
  color: var(--accent);
}
nav {
  display: flex;
  gap: 24px;
  align-items: center;
}
nav a {
  color: var(--muted);
  font-size: 14px;
}
nav a.active {
  color: var(--accent);
}
.account {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
}
.avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--panel2);
  border: 1px solid var(--line);
  font-weight: 800;
}
.button,
.primary,
.secondary,
.danger,
.ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 12px 18px;
  font-size: 14px;
  font-weight: 650;
  line-height: 1.25;
  text-decoration: none;
}
.primary {
  background: var(--accent);
  color: var(--ink);
}
.primary:hover {
  background: var(--accent2);
  text-decoration: none;
}
.secondary {
  background: var(--panel2);
  color: inherit;
  border-color: var(--line);
}
.secondary:hover {
  border-color: var(--accent);
  text-decoration: none;
}
.danger {
  background: #592b3540;
  color: var(--danger);
  border-color: #6c3544;
}
.ghost {
  background: none;
  color: var(--muted);
  padding: 8px;
}
.small {
  font-size: 12px;
  padding: 8px 11px;
}
.eyebrow {
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 2px;
  font-weight: 750;
  color: var(--accent);
  margin: 0 0 18px;
}
.hero {
  padding: 38px 0 40px;
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 70px;
  align-items: center;
}
h1 {
  font-size: clamp(36px, 4.3vw, 60px);
  line-height: 1.06;
  letter-spacing: -2px;
  margin: 0 0 24px;
  font-weight: 750;
}
h1 span {
  color: var(--accent);
}
h2 {
  font-size: 23px;
  letter-spacing: -0.7px;
  margin: 0 0 18px;
}
h3 {
  font-size: 16px;
  margin: 0 0 14px;
}
p {
  line-height: 1.65;
  color: var(--muted);
  margin: 0 0 18px;
}
.lead {
  font-size: 17px;
  max-width: 540px;
}
.row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.spread {
  justify-content: space-between;
}
.stack {
  display: grid;
  gap: 18px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
}
.hero-art {
  position: relative;
  min-height: 320px;
  display: grid;
  place-items: center;
  border-radius: 32px;
  background: radial-gradient(circle, #66d8cb1c, transparent 68%);
  border: 1px solid #8ee8df16;
}
.ice-symbol {
  font-size: 150px;
  line-height: 1;
  color: var(--accent);
  text-shadow: 0 0 80px #8ee8df44;
  transform: rotate(-10deg);
  user-select: none;
}
.art-chip {
  position: absolute;
  background: #172634e8;
  border: 1px solid #456371;
  border-radius: 12px;
  padding: 12px 18px;
  font-size: 13px;
  box-shadow: 0 10px 40px #0003;
}
.art-chip.top {
  top: 38px;
  right: 22px;
}
.art-chip.bottom {
  bottom: 36px;
  left: 15px;
}
.dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  margin-right: 8px;
}
.features {
  display: flex;
  gap: 20px;
  color: var(--muted);
  font-size: 12px;
  margin-top: 28px;
}
.dashboard-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 22px;
  margin: 24px 0;
}
.input,
select,
textarea {
  background: var(--bg);
  color: inherit;
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 12px;
  width: 100%;
  min-width: 0;
}
.input:focus,
textarea:focus,
select:focus {
  border-color: var(--accent);
}
label {
  font-size: 13px;
  color: var(--muted);
  display: grid;
  gap: 8px;
}
.form {
  display: grid;
  gap: 16px;
}
.two {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}
.muted {
  color: var(--muted);
  font-size: 13px;
}
.tag {
  font-size: 11px;
  background: var(--panel2);
  border: 1px solid var(--line);
  color: var(--muted);
  padding: 6px 10px;
  border-radius: 7px;
  font-weight: 650;
  letter-spacing: 0.4px;
}
.tag.live {
  color: var(--accent);
  border-color: #8ee8df44;
}
.section-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 36px 0 16px;
}
.section-title h2 {
  margin: 0;
}
.session {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}
.session strong {
  display: block;
  margin-bottom: 8px;
}
.empty {
  border: 1px dashed var(--line);
  border-radius: 14px;
  padding: 35px;
  color: var(--muted);
  text-align: center;
  font-size: 14px;
}
.footer {
  margin-top: 45px;
  border-top: 1px solid var(--line);
  padding-top: 20px;
  color: var(--muted);
  font-size: 12px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
}
.banner {
  padding: 12px 18px;
  border: 1px solid #d7b87255;
  background: #d7b8720c;
  color: #e8d5a6;
  border-radius: 10px;
  font-size: 13px;
  line-height: 1.6;
  margin-bottom: 24px;
}
.page-title {
  display: flex;
  align-items: end;
  justify-content: space-between;
  margin-bottom: 26px;
  gap: 20px;
}
.page-title h1 {
  font-size: 36px;
  letter-spacing: -1px;
  margin-bottom: 10px;
}
.room-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 310px;
  gap: 22px;
  align-items: start;
}
.room-code {
  font-size: 34px;
  letter-spacing: 6px;
  font-weight: 800;
  color: var(--accent);
  font-family: ui-monospace, monospace;
}
.question-card {
  padding: 35px;
  min-height: 360px;
}
.question-title {
  font-size: clamp(24px, 2.7vw, 38px);
  line-height: 1.22;
  letter-spacing: -0.9px;
  margin: 30px 0;
}
.answers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 13px;
}
.answer {
  color: inherit;
  text-align: left;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 12px;
  min-height: 80px;
  padding: 16px;
  display: flex;
  gap: 14px;
  align-items: center;
  position: relative;
}
.answer .letter {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  background: var(--panel2);
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-weight: 750;
  color: var(--muted);
}
.answer:not(:disabled):hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}
.answer.selected {
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
}
.answer.correct {
  background: #8ee8df13;
  border-color: var(--accent);
}
.answer.correct .letter {
  background: var(--accent);
  color: var(--ink);
}
.answer.wrong {
  border-color: var(--danger);
}
.answer:disabled {
  opacity: 1;
  cursor: default;
}
.timer {
  font-size: 28px;
  font-variant-numeric: tabular-nums;
  font-weight: 750;
  color: var(--accent);
}
.progress {
  height: 3px;
  background: var(--line);
  border-radius: 3px;
  margin: 22px 0;
  overflow: hidden;
}
.progress div {
  height: 100%;
  background: var(--accent);
  width: 100%;
  transition: width 0.25s linear;
}
.member {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--line);
  padding: 14px 0;
}
.member:last-child {
  padding-bottom: 0;
}
.member .name {
  flex: 1;
  min-width: 0;
  overflow-wrap: anywhere;
}
.member .score {
  font-size: 24px;
  font-weight: 700;
}
.member small {
  color: var(--muted);
  font-size: 11px;
}
.member-actions {
  display: flex;
  gap: 6px;
  margin-bottom: 10px;
}
.control-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.control-grid button {
  padding: 12px 8px;
}
.notice {
  padding: 16px;
  border-radius: 12px;
  background: var(--bg);
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}
.explanation {
  margin-top: 20px;
  border-left: 3px solid var(--accent);
  padding: 12px 18px;
  background: #8ee8df08;
  color: var(--muted);
  line-height: 1.6;
}
.check {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 10px;
}
.check input {
  accent-color: var(--accent);
  width: 17px;
  height: 17px;
}
.obs-link {
  font-size: 11px;
  overflow-wrap: anywhere;
  display: block;
  padding: 12px;
  background: var(--bg);
  border-radius: 8px;
  color: var(--muted);
  max-height: 90px;
  overflow: auto;
}
.audit {
  max-height: 200px;
  overflow: auto;
  font-size: 11px;
  color: var(--muted);
}
.audit div {
  padding: 8px 0;
  border-top: 1px solid var(--line);
}
.camera-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 12px;
  margin-top: 20px;
}
.camera-tile {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--bg);
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
  display: grid;
  place-items: center;
  color: var(--muted);
}
.camera-tile video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.camera-name {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 8px 12px;
  font-size: 12px;
  background: linear-gradient(transparent, #000b);
  color: white;
}
.local-camera {
  width: 100%;
  max-height: 220px;
  border-radius: 12px;
  background: #000;
  object-fit: cover;
}
.preview-hidden {
  display: none;
}
#toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  max-width: 90vw;
  padding: 14px 22px;
  background: var(--accent);
  color: var(--ink);
  border-radius: 12px;
  box-shadow: 0 10px 50px #0008;
  z-index: 100;
  display: none;
  font-size: 14px;
}
#toast.show {
  display: block;
}
#toast.error {
  background: #ffc4ce;
  color: #471820;
}
.library-grid {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 22px;
}
.pack-button {
  display: block;
  width: 100%;
  background: var(--bg);
  color: inherit;
  border: 1px solid var(--line);
  text-align: left;
  padding: 15px;
  border-radius: 10px;
  margin-bottom: 10px;
}
.pack-button.active {
  border-color: var(--accent);
}
.question-editor {
  display: grid;
  gap: 15px;
  border-top: 1px solid var(--line);
  padding-top: 22px;
  margin-top: 22px;
}
textarea {
  resize: vertical;
  min-height: 80px;
}
.help {
  max-width: 850px;
}
.help article {
  margin-bottom: 20px;
}
.help h2 {
  margin-bottom: 14px;
}
.help code {
  font-size: 12px;
  overflow-wrap: anywhere;
  color: var(--accent);
}
.podium {
  display: grid;
  gap: 12px;
  margin-top: 26px;
}
.podium-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg);
  padding: 18px;
  border-radius: 12px;
}
.podium-item:first-child {
  border: 1px solid var(--accent);
}
.rank {
  color: var(--accent);
  font-size: 22px;
  font-weight: 800;
  margin-right: 18px;
}
.overlay .header,
.overlay .footer {
  display: none;
}
.overlay .shell {
  max-width: 1800px;
  padding: 35px;
}
.overlay .room-layout {
  grid-template-columns: minmax(0, 1fr) 300px;
}
.overlay .question-card {
  min-height: 440px;
}
.overlay .question-title {
  font-size: 40px;
}
.overlay .answer {
  min-height: 95px;
  font-size: 22px;
}
.overlay .page-title {
  margin-top: 0;
}
.overlay .camera-grid {
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
}
.overlay .camera-tile {
  border-width: 2px;
}
.overlay .brand {
  font-size: 24px;
}
.theme-neon {
  --bg: #100d20;
  --panel: #1a1430;
  --panel2: #2a2042;
  --line: #3d2b58;
  --muted: #b7a9ca;
  --accent: #d3a0ff;
  --accent2: #e8d0ff;
  --ink: #2b1249;
}
.theme-paper {
  --bg: #eeeae2;
  --panel: #fcfaf5;
  --panel2: #e6e1d7;
  --line: #d2cbbd;
  --muted: #696859;
  --accent: #246c62;
  --accent2: #368779;
  --ink: #fff;
  color: #262e2c;
  color-scheme: light;
}
.theme-paper .banner {
  color: #745b29;
}
.theme-paper .primary {
  color: #fff;
}
.theme-paper .camera-tile {
  background: #d9d4c9;
}
.theme-paper .art-chip {
  background: #fcfaf5;
}
.theme-paper .answer.correct {
  background: #246c6213;
}
.theme-paper .answer.correct .letter {
  color: #fff;
}
.theme-paper .danger {
  background: #fce7e7;
  color: #9e273d;
}
.theme-paper .obs-link {
  color: #555;
}
.theme-paper .explanation {
  background: #246c6208;
}
details {
  border-top: 1px solid var(--line);
  padding-top: 16px;
  margin-top: 18px;
}
summary {
  cursor: pointer;
  font-size: 13px;
  color: var(--muted);
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
@media (max-width: 900px) {
  .shell {
    padding: 0 20px 40px;
  }
  .hero {
    gap: 20px;
    grid-template-columns: 1fr;
  }
  .hero-art {
    display: none;
  }
  .dashboard-grid,
  .room-layout,
  .library-grid,
  .overlay .room-layout {
    grid-template-columns: 1fr;
  }
  .header {
    flex-wrap: wrap;
    padding: 22px 0;
    min-height: 90px;
    gap: 18px;
  }
  nav {
    gap: 18px;
  }
  .account {
    margin-left: auto;
  }
  .room-layout > aside {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
  }
  .room-layout > aside > .card {
    margin: 0;
  }
  .overlay .question-title {
    font-size: 30px;
  }
  .overlay .answer {
    font-size: 18px;
  }
  .page-title {
    align-items: start;
  }
  .features {
    flex-wrap: wrap;
  }
}
@media (max-width: 560px) {
  .answers,
  .two,
  .room-layout > aside {
    grid-template-columns: 1fr;
  }
  .question-card {
    padding: 22px;
  }
  .header nav {
    order: 3;
    width: 100%;
    justify-content: center;
  }
  .account .account-name {
    display: none;
  }
  h1 {
    font-size: 42px;
  }
  .page-title h1 {
    font-size: 28px;
  }
  .card {
    padding: 21px;
  }
  .hero {
    padding-top: 16px;
  }
  .button,
  .primary,
  .secondary {
    padding: 12px 14px;
  }
  .page-title {
    flex-wrap: wrap;
  }
  .answer {
    min-height: 68px;
  }
  .overlay .shell {
    padding: 18px;
  }
  .overlay .answer {
    min-height: 65px;
  }
  .features {
    gap: 12px;
  }
  .footer {
    flex-direction: column;
  }
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}