:root {
  --higher-panel: rgba(9, 29, 65, 0.94);
  --higher-deep: rgba(4, 19, 45, 0.88);
  --higher-gold: #ffd84d;
  --higher-green: #2ed573;
  --higher-red: #ff6b6b;
}

[hidden] {
  display: none !important;
}

.entry-actions #single-player {
  min-height: 54px;
}

.text-button,
.start-button,
.primary-button,
.secondary-button,
.run-hud > button {
  min-height: 44px;
  padding: 11px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--ink);
  background: var(--input-bg);
  cursor: pointer;
  font: 800 0.76rem/1.2 "Helvetica Neue", Arial, sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.text-button {
  min-height: auto;
  padding: 0;
  border: 0;
  background: transparent;
}

.start-button,
.primary-button {
  border-color: var(--ink);
  color: var(--bg);
  background: var(--ink);
}

.primary-button:disabled,
.secondary-button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

.lobby-panel,
.results-screen {
  width: min(900px, 100%);
  margin: 18px auto 0;
  padding: clamp(22px, 5vw, 42px);
  border: 1px solid var(--border);
  background: var(--higher-panel);
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.16);
}

.panel-heading .text-button {
  margin-bottom: 26px;
}

.panel-heading > span,
.results-kicker {
  color: var(--ink);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.panel-heading h1,
.results-screen h1 {
  margin: 8px 0;
  color: var(--ink);
  font: 900 clamp(2rem, 5vw, 3.4rem)/1 "Arial Black", Impact, sans-serif;
  text-transform: uppercase;
}

.panel-heading p {
  margin: 0;
  color: var(--ink-muted);
  line-height: 1.5;
}

#copy-room-code {
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--ink);
  background: var(--higher-deep);
  font: inherit;
}

.room-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 15px;
}

.room-meta span {
  padding: 6px 9px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--ink-muted);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lobby-layout {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 14px;
  margin-top: 24px;
}

.player-list,
.lobby-actions {
  display: grid;
  align-content: start;
  gap: 8px;
}

.player-row {
  display: flex;
  min-height: 58px;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border: 1px solid var(--border);
  background: var(--higher-deep);
}

.player-row strong {
  color: var(--ink-light);
}

.player-row span {
  color: var(--ink-muted);
  font-size: 0.72rem;
  text-transform: uppercase;
}

.player-row.ready span {
  color: var(--higher-green);
}

.connection-status {
  min-height: 1.4em;
  margin: 16px 0 0;
  color: var(--ink-muted);
}

.connection-status.error,
.answer-footer #feedback.error {
  color: var(--higher-red);
}

.play-screen {
  min-height: calc(100vh - 160px);
  padding-top: 18px;
}

.run-hud {
  display: grid;
  grid-template-columns: 110px repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 12px;
}

.run-hud > button,
.hud-stat {
  min-height: 52px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--higher-panel);
}

.hud-stat {
  text-align: center;
}

.hud-stat small,
.hud-stat strong {
  display: block;
  text-transform: uppercase;
}

.hud-stat small {
  color: var(--ink-muted);
  font-size: 0.61rem;
  letter-spacing: 0.1em;
}

.hud-stat strong {
  margin-top: 4px;
  color: var(--ink);
  font: 900 1.15rem "Arial Black", Impact, sans-serif;
}

.question-banner {
  position: relative;
  display: grid;
  min-height: 130px;
  align-content: center;
  padding: 18px 32px 25px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--higher-panel);
  text-align: center;
}

.question-banner > span {
  color: var(--ink);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.question-banner h1 {
  margin: 8px 0 0;
  color: var(--ink-light);
  font-size: clamp(1.35rem, 3.5vw, 2.35rem);
  line-height: 1.18;
}

.timer {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 5px;
  background: rgba(255, 255, 255, 0.08);
}

.timer i {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--ink);
  transform-origin: left;
}

.timer b {
  position: absolute;
  right: 9px;
  bottom: 10px;
  color: var(--ink);
  font-size: 0.8rem;
}

.comparison-stage {
  display: grid;
  grid-template-columns: 1fr 58px 1fr;
  align-items: stretch;
  gap: 0;
  margin-top: 12px;
}

.answer-card {
  display: grid;
  min-height: 300px;
  place-items: center;
  padding: clamp(22px, 4vw, 42px);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--ink-light);
  background: var(--higher-panel);
  cursor: pointer;
  text-align: center;
  transition: border-color 140ms ease, background 140ms ease, transform 140ms ease;
}

.answer-card:hover:not(:disabled) {
  border-color: var(--ink);
  background: var(--panel-hover);
  transform: translateY(-2px);
}

.answer-card.selected-answer:not(.revealed) {
  border-color: var(--ink);
  box-shadow: inset 0 0 0 2px var(--ink);
}

.card-front small,
.card-front b,
.card-front em,
.card-reveal small,
.card-reveal b,
.card-reveal em {
  display: block;
}

.card-front small,
.card-reveal small {
  color: var(--ink);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.card-front b {
  margin-top: 14px;
  font: 900 clamp(1.8rem, 4vw, 3.3rem)/1 "Arial Black", Impact, sans-serif;
  text-transform: uppercase;
}

.card-front em,
.card-reveal em {
  margin-top: 18px;
  color: var(--ink-muted);
  font-size: 0.68rem;
  font-style: normal;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.card-reveal {
  display: none;
}

.card-reveal b {
  margin: 14px 0 0;
  color: var(--ink);
  font: 900 clamp(2.3rem, 5vw, 4.3rem)/1 "Arial Black", Impact, sans-serif;
}

.answer-card.revealed .card-front {
  display: none;
}

.answer-card.revealed .card-reveal {
  display: block;
}

.answer-card.correct {
  border-color: var(--higher-green);
  background: rgba(46, 213, 115, 0.12);
}

.answer-card.wrong {
  border-color: var(--higher-red);
  opacity: 0.62;
}

.versus-mark {
  z-index: 2;
  display: grid;
  place-content: center;
  text-align: center;
}

.versus-mark span {
  display: grid;
  width: 44px;
  aspect-ratio: 1;
  margin: auto;
  place-items: center;
  border: 1px solid var(--ink);
  border-radius: 50%;
  color: var(--bg);
  background: var(--ink);
  font-weight: 900;
}

.versus-mark small {
  display: block;
  margin-top: 7px;
  color: var(--ink-muted);
  font-size: 0.52rem;
  text-transform: uppercase;
}

.answer-footer {
  display: flex;
  min-height: 46px;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  color: var(--ink-muted);
  font-size: 0.74rem;
}

.answer-footer a {
  color: var(--ink);
}

.results-screen {
  text-align: center;
}

.final-score small,
.final-score strong,
.results-grid small,
.results-grid strong {
  display: block;
}

.final-score small,
.results-grid small {
  color: var(--ink-muted);
  font-size: 0.64rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.final-score strong {
  color: var(--ink);
  font: 900 clamp(3.5rem, 10vw, 6.5rem)/1 "Arial Black", Impact, sans-serif;
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 20px;
}

.results-grid div,
.standing-row {
  padding: 14px;
  border: 1px solid var(--border);
  background: var(--higher-deep);
}

.results-grid strong {
  margin-top: 5px;
  color: var(--ink-light);
  font-size: 1.2rem;
}

.results-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 9px;
  margin-top: 16px;
}

.online-standings {
  display: grid;
  gap: 7px;
  margin-top: 18px;
  text-align: left;
}

.standing-row {
  display: flex;
  justify-content: space-between;
}

.standing-row:first-child {
  border-color: var(--ink);
}

.feedback-flash {
  position: fixed;
  z-index: 90;
  top: 50%;
  left: 50%;
  color: var(--ink);
  font: 900 clamp(2.2rem, 7vw, 5rem)/0.9 "Arial Black", Impact, sans-serif;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, -50%);
}

.feedback-flash.show {
  animation: feedback 600ms ease-out;
}

.feedback-flash.bad {
  color: var(--higher-red);
}

@keyframes feedback {
  0% { opacity: 0; transform: translate(-50%, -50%) scale(0.9); }
  25%, 65% { opacity: 1; transform: translate(-50%, -50%) scale(1); }
  100% { opacity: 0; transform: translate(-50%, -58%); }
}

@media (max-width: 760px) {
  .lobby-layout {
    grid-template-columns: 1fr;
  }

  .run-hud {
    grid-template-columns: repeat(4, 1fr);
  }

  .run-hud > button {
    grid-column: 1 / -1;
    min-height: 38px;
  }

  .comparison-stage {
    grid-template-columns: 1fr 40px 1fr;
  }

  .answer-card {
    min-height: 260px;
    padding: 18px 12px;
  }

  .versus-mark span {
    width: 34px;
    font-size: 0.75rem;
  }

  .versus-mark small {
    display: none;
  }
}

@media (max-width: 430px) {
  .millionaire-shell {
    width: min(100% - 18px, 1160px);
  }

  .comparison-stage {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .versus-mark {
    height: 28px;
  }

  .versus-mark span {
    width: 30px;
    transform: translateY(-1px);
  }

  .answer-card {
    min-height: 170px;
  }

  .card-front b {
    font-size: clamp(1.5rem, 9vw, 2.3rem);
  }

  .results-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .results-actions {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.1s !important;
    transition-duration: 0.1s !important;
  }
}