* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: "Hiragino Sans", "Yu Gothic", "Segoe UI", sans-serif;
  background: #14161b;
  color: #f2f2f2;
  overflow: hidden;
}

.screen {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hidden { display: none !important; }

#lobby, #winOverlay {
  background: radial-gradient(circle at 50% 30%, #2a2f3a, #0f1115 70%);
  overflow-y: auto;
  padding: 24px 0;
}

.lobby-card {
  background: #1e222b;
  border: 1px solid #333947;
  border-radius: 16px;
  padding: 32px 36px;
  width: min(90vw, 420px);
  text-align: center;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.lobby-card h1 {
  margin: 0 0 8px;
  font-size: 1.5rem;
}

.lobby-card .sub {
  color: #9aa2b1;
  font-size: 0.9rem;
  margin: 0 0 24px;
}

.lobby-card label {
  display: block;
  text-align: left;
  font-size: 0.85rem;
  color: #b8c0cf;
  margin-bottom: 14px;
}

.lobby-card input[type="text"] {
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid #3a4152;
  background: #12151c;
  color: #f2f2f2;
  font-size: 1rem;
}

.lobby-card input:focus {
  outline: 2px solid #5b8def;
}

.lobby-card button, #interactBtn, #closeWinBtn {
  cursor: pointer;
  border: none;
  font-weight: 700;
}

.lobby-card button, #closeWinBtn {
  width: 100%;
  margin-top: 8px;
  padding: 12px;
  border-radius: 10px;
  background: linear-gradient(135deg, #5b8def, #4267d1);
  color: white;
  font-size: 1rem;
}

.lobby-card button.secondary {
  background: linear-gradient(135deg, #3fa66b, #2c8a54);
}

.lobby-card button:hover, #closeWinBtn:hover { filter: brightness(1.1); }

.divider {
  display: flex;
  align-items: center;
  text-align: center;
  color: #6c7688;
  font-size: 0.75rem;
  margin: 22px 0 14px;
}
.divider::before, .divider::after {
  content: "";
  flex: 1;
  border-bottom: 1px solid #333947;
}
.divider span { padding: 0 10px; white-space: nowrap; }

.book-count {
  text-align: left;
  margin-bottom: 16px;
}
.book-count .label {
  display: block;
  font-size: 0.85rem;
  color: #b8c0cf;
  margin-bottom: 8px;
}
.radio-row {
  display: flex;
  gap: 10px;
}
.radio-row .radio {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin: 0;
  padding: 8px 4px;
  border-radius: 8px;
  border: 1px solid #3a4152;
  background: #12151c;
  font-size: 0.85rem;
  cursor: pointer;
}
.radio-row .radio:has(input:checked) {
  border-color: #5b8def;
  background: rgba(91,141,239,0.15);
}
.radio-row input { margin: 0; width: auto; }

.hint {
  margin-top: 16px;
  font-size: 0.75rem;
  color: #6c7688;
}
.hint.small {
  margin-top: 6px;
  margin-bottom: 4px;
}

.error {
  color: #ff6b6b;
  font-size: 0.8rem;
  min-height: 1em;
  margin-top: 10px;
}

#gameUi {
  display: block;
}

#gameCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  outline: none;
}

#hud {
  position: absolute;
  top: 14px;
  left: 14px;
  right: 14px;
  display: flex;
  align-items: center;
  gap: 16px;
  pointer-events: none;
  font-size: 0.85rem;
}

#roomBadge {
  background: rgba(20,22,27,0.75);
  border: 1px solid #333947;
  padding: 6px 12px;
  border-radius: 8px;
  white-space: nowrap;
}

#progressWrap {
  flex: 1;
  max-width: 360px;
  background: rgba(20,22,27,0.75);
  border: 1px solid #333947;
  border-radius: 8px;
  padding: 8px 12px;
}

#progressBar {
  height: 8px;
  border-radius: 4px;
  background: #2a2f3a;
  overflow: hidden;
  margin-bottom: 4px;
}

#progressFill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #57d68d, #2ecc71);
  transition: width 0.25s ease;
}

#progressText {
  font-size: 0.75rem;
  color: #c7ccd6;
}

#playerList {
  background: rgba(20,22,27,0.75);
  border: 1px solid #333947;
  border-radius: 8px;
  padding: 6px 12px;
  max-width: 220px;
  max-height: 140px;
  overflow-y: auto;
  font-size: 0.75rem;
  line-height: 1.5;
}

#playerList .p {
  display: flex;
  align-items: center;
  gap: 6px;
}

#playerList .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

#prompt {
  position: absolute;
  left: 50%;
  bottom: 140px;
  transform: translateX(-50%);
  background: rgba(20,22,27,0.85);
  border: 1px solid #4c5468;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 0.9rem;
  pointer-events: none;
}

#interactBtn {
  position: absolute;
  right: 24px;
  bottom: 30px;
  width: 84px;
  height: 84px;
  border-radius: 50%;
  background: rgba(91,141,239,0.85);
  color: white;
  font-size: 0.75rem;
  line-height: 1.3;
  border: 2px solid rgba(255,255,255,0.3);
  box-shadow: 0 6px 20px rgba(0,0,0,0.4);
}

#interactBtn span {
  font-size: 0.65rem;
  opacity: 0.8;
}

#interactBtn:active { transform: scale(0.94); }

#controlsHint {
  position: absolute;
  left: 14px;
  bottom: 14px;
  background: rgba(20,22,27,0.7);
  border: 1px solid #333947;
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 0.72rem;
  color: #b8c0cf;
}

@media (max-width: 640px) {
  #controlsHint { display: none; }
  #playerList { display: none; }
}