* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: #1a1a2e;
  color: #fff;
  font-family: 'Segoe UI', sans-serif;
  overflow: hidden;
}

#game-canvas { display: block; width: 100vw; height: 100vh; }

/* Lobby */
#lobby {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: #1a1a2e; z-index: 100;
}

.lobby-box {
  background: #16213e;
  border: 2px solid #0f3460;
  border-radius: 12px;
  padding: 40px; width: 360px; text-align: center;
}

.lobby-box h1 {
  font-size: 2.8rem; font-weight: 900;
  letter-spacing: 6px; color: #e94560; margin-bottom: 6px;
}

.lobby-box > p { color: #aaa; margin-bottom: 28px; font-size: 0.9rem; }

.lobby-box input {
  width: 100%; padding: 12px 16px;
  background: #0f3460; border: 1px solid #e94560;
  border-radius: 8px; color: #fff; font-size: 1rem;
  margin-bottom: 12px; outline: none;
}
.lobby-box input::placeholder { color: #666; }

.lobby-box button {
  width: 100%; padding: 13px;
  background: #e94560; color: #fff;
  border: none; border-radius: 8px;
  font-size: 1rem; font-weight: 700;
  cursor: pointer; letter-spacing: 2px;
  transition: background 0.2s;
}
.lobby-box button:hover { background: #c73652; }

/* HUD */
#hud { position: fixed; inset: 0; pointer-events: none; }

#level-banner {
  position: absolute; top: 16px; left: 50%; transform: translateX(-50%);
  background: rgba(0,0,0,0.55);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 20px; padding: 6px 20px;
  font-size: 0.85rem; letter-spacing: 2px; color: #ffd700;
}

#stats {
  position: absolute; bottom: 20px; left: 20px;
}

.stat-box {
  background: rgba(0,0,0,0.6);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 8px; padding: 8px 16px;
  font-size: 0.85rem; font-weight: 700;
}
.stat-box span { color: #2ecc71; font-size: 1rem; }

#scoreboard {
  position: absolute; top: 52px; right: 20px;
  background: rgba(0,0,0,0.6);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 8px; padding: 12px 16px; min-width: 180px;
  font-size: 0.78rem;
}
#scoreboard h3 { color: #e94560; margin-bottom: 8px; font-size: 0.8rem; letter-spacing: 1px; }
.score-entry {
  display: flex; justify-content: space-between;
  gap: 12px; padding: 3px 0; border-bottom: 1px solid rgba(255,255,255,0.05);
}

#notification {
  position: absolute; top: 52px; left: 50%; transform: translateX(-50%);
  font-size: 1.1rem; font-weight: 700;
  text-shadow: 0 0 10px currentColor;
  transition: opacity 0.5s;
  pointer-events: none;
}

#controls-hint {
  position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%);
  font-size: 0.72rem; color: rgba(255,255,255,0.35);
  letter-spacing: 1px;
}

/* Question overlay */
#question-overlay {
  position: fixed; inset: 0;
  display: none; align-items: center; justify-content: center;
  z-index: 50; background: rgba(0,0,0,0.4);
}

#question-card {
  background: rgba(15,52,96,0.97);
  border: 2px solid #3498db;
  border-radius: 14px; padding: 28px; width: 500px;
  animation: slideIn 0.25s ease;
}

@keyframes slideIn {
  from { transform: translateY(-16px); opacity: 0; }
  to   { transform: translateY(0);     opacity: 1; }
}

#question-badge {
  display: inline-block;
  background: #3498db; color: #fff;
  font-size: 0.7rem; font-weight: 800;
  letter-spacing: 2px; padding: 3px 10px;
  border-radius: 4px; margin-bottom: 14px;
}

#question-card h3 { font-size: 1.15rem; margin-bottom: 18px; line-height: 1.5; }

.options-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.option-btn {
  padding: 13px 10px;
  background: #0f3460; border: 1px solid #1a5276;
  border-radius: 8px; color: #fff;
  font-size: 0.9rem; cursor: pointer;
  transition: all 0.12s;
}
.option-btn:hover:not(:disabled) { background: #1a5276; border-color: #3498db; }
.option-btn.correct { background: #1e8449 !important; border-color: #2ecc71 !important; }
.option-btn.wrong   { background: #922b21 !important; border-color: #e74c3c !important; }
.option-btn.selected { border-color: #fff; }

#answer-feedback {
  margin-top: 14px; text-align: center;
  font-weight: 700; font-size: 1rem; min-height: 22px;
}

/* Mod menu */
#mod-menu {
  position: fixed; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  z-index: 80; display: none; flex-direction: column;
}

#mod-card {
  background: rgba(10,10,20,0.97);
  border: 2px solid #e94560;
  border-radius: 14px; padding: 24px 28px; width: 300px;
  box-shadow: 0 0 30px rgba(233,69,96,0.4);
  animation: slideIn 0.2s ease;
}

#mod-title {
  text-align: center; font-size: 1.1rem;
  font-weight: 900; letter-spacing: 4px;
  color: #e94560; margin-bottom: 18px;
  text-shadow: 0 0 12px #e94560;
}

.mod-row {
  display: flex; justify-content: space-between;
  align-items: center; padding: 8px 0;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  font-size: 0.9rem;
}

.mod-btn {
  padding: 5px 16px;
  background: #1a1a2e; color: #666;
  border: 1px solid #333; border-radius: 6px;
  font-size: 0.8rem; font-weight: 700;
  cursor: pointer; letter-spacing: 1px;
  transition: all 0.15s; min-width: 52px;
}
.mod-btn.on {
  background: #e94560; color: #fff;
  border-color: #e94560;
  box-shadow: 0 0 8px rgba(233,69,96,0.5);
}

#mod-hint {
  margin-top: 14px; font-size: 0.68rem;
  color: rgba(255,255,255,0.3); text-align: center;
  letter-spacing: 1px;
}

/* Rebirth overlay */
#rebirth-overlay, #rebirth-maxed-overlay {
  position: fixed; inset: 0;
  display: none; align-items: center; justify-content: center;
  z-index: 60; background: rgba(0,0,0,0.6);
}

#rebirth-card {
  background: rgba(15,52,96,0.97);
  border: 2px solid #ffd700;
  border-radius: 16px; padding: 36px 40px;
  text-align: center; width: 420px;
  animation: slideIn 0.3s ease;
}

#rebirth-badge {
  display: inline-block;
  background: #ffd700; color: #000;
  font-size: 0.72rem; font-weight: 900;
  letter-spacing: 3px; padding: 4px 14px;
  border-radius: 4px; margin-bottom: 16px;
}

#rebirth-title {
  font-size: 1.8rem; font-weight: 900;
  color: #fff; margin-bottom: 8px;
}

#rebirth-sub {
  color: #aaa; font-size: 0.95rem; margin-bottom: 18px;
}

#rebirth-difficulty-badge {
  font-size: 1.1rem; font-weight: 800;
  letter-spacing: 3px; padding: 8px 0;
  margin-bottom: 22px; border-radius: 8px;
}

#rebirth-btn {
  width: 100%; padding: 14px;
  background: #ffd700; color: #000;
  border: none; border-radius: 8px;
  font-size: 1.1rem; font-weight: 900;
  cursor: pointer; letter-spacing: 2px;
  transition: background 0.2s;
  margin-bottom: 10px;
}
#rebirth-btn:hover { background: #f0c800; }

#rebirth-skip {
  width: 100%; padding: 10px;
  background: transparent; color: #666;
  border: 1px solid #333; border-radius: 8px;
  font-size: 0.85rem; cursor: pointer;
  transition: color 0.2s;
}
#rebirth-skip:hover { color: #aaa; }

/* Chat */
#chat-panel {
  position: fixed; bottom: 70px; left: 20px;
  width: 300px; pointer-events: none; z-index: 20;
}

#chat-messages {
  display: flex; flex-direction: column; gap: 3px;
  max-height: 160px; overflow: hidden;
}

.chat-msg {
  background: rgba(0,0,0,0.45);
  border-radius: 4px; padding: 3px 8px;
  font-size: 0.78rem; line-height: 1.4;
  animation: fadeMsg 8s forwards;
}
.chat-msg .chat-name { color: #e94560; font-weight: 700; margin-right: 5px; }

@keyframes fadeMsg {
  0%   { opacity: 1; }
  70%  { opacity: 1; }
  100% { opacity: 0; }
}

#chat-input-row {
  pointer-events: all; margin-top: 4px;
}
#chat-input {
  width: 100%; padding: 7px 10px;
  background: rgba(15,52,96,0.92);
  border: 1px solid #3498db;
  border-radius: 6px; color: #fff;
  font-size: 0.85rem; outline: none;
}

/* Mobile controls */
#mobile-ui {
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 10;
}

#joystick-zone {
  position: absolute;
  bottom: 30px; left: 30px;
  width: 130px; height: 130px;
  pointer-events: all;
  display: flex; align-items: center; justify-content: center;
}

#joystick-base {
  width: 110px; height: 110px;
  background: rgba(255,255,255,0.12);
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  position: relative;
}

#joystick-knob {
  width: 44px; height: 44px;
  background: rgba(255,255,255,0.55);
  border-radius: 50%;
  position: absolute;
  transition: transform 0.05s;
  will-change: transform;
}

#look-zone {
  position: absolute;
  top: 0; right: 0;
  width: 60%; height: calc(100% - 100px);
  pointer-events: all;
}

#jump-btn {
  position: absolute;
  bottom: 40px; right: 30px;
  width: 80px; height: 80px;
  background: rgba(233,69,96,0.75);
  border: 2px solid rgba(233,69,96,0.9);
  border-radius: 50%;
  color: #fff; font-weight: 900;
  font-size: 0.8rem; letter-spacing: 1px;
  pointer-events: all;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

#sprint-btn {
  position: absolute;
  bottom: 40px; right: 125px;
  width: 70px; height: 70px;
  background: rgba(52,152,219,0.75);
  border: 2px solid rgba(52,152,219,0.9);
  border-radius: 50%;
  color: #fff; font-weight: 900;
  font-size: 0.7rem; letter-spacing: 1px;
  pointer-events: all;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: background 0.15s, border-color 0.15s;
}

#sprint-btn.active {
  background: rgba(52,152,219,1);
  border-color: #fff;
  box-shadow: 0 0 12px rgba(52,152,219,0.8);
}