* { margin:0; padding:0; box-sizing:border-box; -webkit-tap-highlight-color:transparent; }

html, body {
  width:100%; height:100%;
  overflow:hidden;
  background:#050b14;
  font-family:'Segoe UI', 'Arial Narrow', Arial, sans-serif;
  touch-action:none;
  user-select:none;
  -webkit-user-select:none;
}

#game {
  position:fixed;
  inset:0;
  width:100vw;
  height:100vh;
  display:block;
  touch-action:none;
  cursor:crosshair;
}

#ui {
  position:fixed;
  inset:0;
  pointer-events:none;
  color:#eafcff;
}

/* ---------- top bar ---------- */
#topbar {
  position:absolute;
  top:0; left:0; right:0;
  display:flex;
  align-items:center;
  gap:16px;
  padding:calc(10px + env(safe-area-inset-top)) 18px 10px 18px;
}

.iconBtn {
  pointer-events:auto;
  width:44px; height:44px;
  border-radius:12px;
  border:2px solid #4fd8ff;
  background:linear-gradient(180deg,#1c4c66,#0d2636);
  color:#dffcff;
  font-size:18px;
  box-shadow:0 0 14px rgba(79,216,255,.55), inset 0 0 8px rgba(79,216,255,.35);
  cursor:pointer;
  flex:0 0 auto;
}
.iconBtn:active { transform:scale(.94); }

#tiltWrap { flex:1 1 auto; min-width:0; }

#ratioWrap {
  position:absolute;
  transform:translate(-50%, 0);
  text-align:center;
  white-space:nowrap;
}
#ratioLabel {
  font-size:15px;
  font-weight:700;
  letter-spacing:.5px;
  color:#bfeaff;
  text-shadow:0 0 6px rgba(79,216,255,.6);
}
#ratioText { color:#8effa0; }
#ratioText.warn { color:#ff6b6b; }

#tiltMeter {
  position:relative;
  height:14px;
  border-radius:8px;
  background:#0d1c26;
  border:1px solid rgba(140,220,255,.35);
  overflow:visible;
  box-shadow:inset 0 0 6px rgba(0,0,0,.6);
}
#tiltFill {
  position:absolute; inset:0;
  border-radius:8px;
  background:linear-gradient(90deg,#ff5d5d 0%, #ffd25d 30%, #6dff8f 50%, #ffd25d 70%, #ff5d5d 100%);
  box-shadow:0 0 10px rgba(120,255,150,.6);
}
#tiltMarker {
  position:absolute;
  top:-4px;
  width:6px; height:22px;
  border-radius:3px;
  background:#fff;
  box-shadow:0 0 10px #fff, 0 0 18px #4fd8ff;
  left:50%;
  transform:translateX(-50%);
  transition:left .06s linear;
}

#weightWrap {
  position:absolute;
  transform:translate(-50%, 0);
  text-align:center;
  white-space:nowrap;
}
#weightLabel {
  font-size:11px;
  font-weight:700;
  letter-spacing:.5px;
  color:#bfeaff;
  text-shadow:0 0 6px rgba(79,216,255,.6);
}
#weightText {
  font-size:18px;
  font-weight:800;
  color:#ffcf7a;
  text-shadow:0 0 8px rgba(255,190,90,.6);
}
#imbalanceText {
  font-size:13px;
  font-weight:700;
  margin-top:2px;
  color:#8effa0;
  text-shadow:0 0 6px rgba(120,255,150,.5);
}
#imbalanceText.left { color:#7ef7ff; text-shadow:0 0 6px rgba(79,216,255,.6); }
#imbalanceText.right { color:#ffcf4d; text-shadow:0 0 6px rgba(255,159,31,.6); }

#scoreWrap { text-align:right; flex:0 0 auto; }
#scoreText {
  font-size:26px;
  font-weight:800;
  letter-spacing:1px;
  color:#fff8dc;
  text-shadow:0 0 12px rgba(255,220,120,.7);
}
#levelText {
  font-size:12px;
  color:#8fd7ff;
  font-weight:700;
  text-shadow:0 0 6px rgba(79,216,255,.6);
}

/* ---------- tilt alert ---------- */
#tiltAlert {
  position:absolute;
  top:90px; left:50%;
  transform:translateX(-50%);
  text-align:center;
  background:rgba(60,10,10,.55);
  border:2px solid #ff4d4d;
  border-radius:14px;
  padding:8px 22px;
  box-shadow:0 0 24px rgba(255,60,60,.65);
  animation:pulseAlert .55s infinite alternate;
}
.alertTitle {
  color:#ff5b5b;
  font-weight:900;
  font-size:20px;
  letter-spacing:1px;
  text-shadow:0 0 10px rgba(255,80,80,.8);
}
#alertTimer {
  color:#ffdada;
  font-size:13px;
  font-weight:700;
}
@keyframes pulseAlert {
  from { box-shadow:0 0 14px rgba(255,60,60,.5); }
  to   { box-shadow:0 0 34px rgba(255,60,60,.9); }
}

/* ---------- popups ---------- */
.popup {
  position:absolute;
  top:38%; left:50%;
  transform:translate(-50%,-50%) scale(.6);
  font-weight:900;
  text-align:center;
  opacity:0;
  pointer-events:none;
  white-space:nowrap;
}
#badgePerfect {
  font-size:34px;
  color:#7ef7ff;
  text-shadow:0 0 10px #2ad7ff, 0 0 30px #2ad7ff;
}
#badgeLevelUp {
  font-size:26px;
  color:#ffcf4d;
  text-shadow:0 0 10px #ff9d1f, 0 0 30px #ff9d1f;
  line-height:1.25;
}
.popup.show {
  animation:popIn 1.1s ease-out forwards;
}
@keyframes popIn {
  0%   { opacity:0; transform:translate(-50%,-50%) scale(.5); }
  15%  { opacity:1; transform:translate(-50%,-50%) scale(1.15); }
  30%  { transform:translate(-50%,-50%) scale(1); }
  75%  { opacity:1; }
  100% { opacity:0; transform:translate(-50%,-60%) scale(1); }
}

/* ---------- full screens ---------- */
.screen {
  position:absolute; inset:0;
  display:flex; flex-direction:column;
  align-items:center; justify-content:center;
  gap:18px;
  background:radial-gradient(ellipse at center, rgba(6,20,30,.55), rgba(3,8,14,.92));
  pointer-events:auto;
  text-align:center;
  padding:20px;
  overflow-y:auto;
}
.hidden { display:none !important; }

.logo {
  font-size:52px;
  font-weight:900;
  letter-spacing:3px;
  color:#fff;
  line-height:1.05;
  text-shadow:0 0 18px rgba(120,255,200,.6);
}
.logo span {
  color:#4fe0ff;
  text-shadow:0 0 22px rgba(79,224,255,.9);
}
.subtitle {
  color:#bfe9ff;
  font-size:15px;
  line-height:1.5;
  max-width:340px;
}
.hint {
  color:#7fb6cf;
  font-size:12px;
  margin-top:6px;
}

.legalLinks {
  margin-top:14px;
  font-size:11px;
  color:#4c6a7a;
}
.legalLinks a {
  color:#4c6a7a;
  text-decoration:none;
}
.legalLinks a:hover { color:#7fb6cf; text-decoration:underline; }

/* ---------- scoreboard ---------- */
.scoreboardBox {
  width:100%;
  max-width:300px;
  background:rgba(10,30,40,.45);
  border:1px solid rgba(140,220,255,.35);
  border-radius:14px;
  padding:14px 18px;
  box-shadow:inset 0 0 10px rgba(0,0,0,.3);
}
.scoreboardTitle {
  font-size:12px;
  font-weight:800;
  letter-spacing:1.5px;
  color:#8fd7ff;
  text-shadow:0 0 6px rgba(79,216,255,.6);
  margin-bottom:8px;
}
.scoreboardList {
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:5px;
}
.scoreboardList li {
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:#eafcff;
}
.scoreboardList .rank { color:#7fb6cf; width:16px; flex:0 0 auto; text-align:right; }
.scoreboardList .name { flex:1 1 auto; min-width:0; text-align:left; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.scoreboardList .points { flex:0 0 auto; font-weight:800; color:#ffcf7a; }
.scoreboardEmpty { color:#7fb6cf; font-size:13px; }

/* ---------- new high score form ---------- */
#newHighScoreForm {
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:10px;
}
.newHighScoreLabel {
  color:#ffe27a;
  font-weight:800;
  font-size:14px;
  text-shadow:0 0 10px rgba(255,210,90,.6);
}
#playerNameInput {
  width:220px;
  padding:10px 14px;
  border-radius:20px;
  border:2px solid #4fd8ff;
  background:rgba(10,30,40,.6);
  color:#eafcff;
  font-size:16px;
  text-align:center;
  outline:none;
}
.bigBtn.small { padding:10px 30px; font-size:15px; }

.consentNote {
  max-width:260px;
  font-size:11px;
  line-height:1.5;
  color:#7fb6cf;
}
.consentNote a { color:#8ef7c9; }

.bigBtn {
  pointer-events:auto;
  padding:16px 46px;
  font-size:20px;
  font-weight:900;
  letter-spacing:1px;
  color:#04222b;
  background:linear-gradient(180deg,#8ef7c9,#37d69c);
  border:none;
  border-radius:40px;
  box-shadow:0 0 24px rgba(80,255,180,.6), 0 6px 0 #1f8a63;
  cursor:pointer;
}
.bigBtn:active { transform:translateY(4px); box-shadow:0 0 24px rgba(80,255,180,.6), 0 2px 0 #1f8a63; }

.prepText {
  font-size:44px;
  font-weight:900;
  color:#ffe27a;
  text-shadow:0 0 24px rgba(255,210,90,.8);
  letter-spacing:2px;
  animation:prepPulse 1s ease-in-out infinite;
}
@keyframes prepPulse {
  0%,100% { transform:scale(1); }
  50% { transform:scale(1.08); }
}

.gameoverTitle {
  font-size:40px;
  font-weight:900;
  color:#ff6b6b;
  text-shadow:0 0 20px rgba(255,80,80,.7);
  letter-spacing:2px;
}
.finalScoreLabel {
  font-size:13px;
  color:#8fd7ff;
  letter-spacing:1px;
  margin-top:4px;
}
#finalScore {
  font-size:38px;
  font-weight:900;
  color:#fff8dc;
  text-shadow:0 0 14px rgba(255,220,120,.7);
}
#finalCombo {
  font-size:22px;
  font-weight:800;
  color:#ffcf4d;
  text-shadow:0 0 10px rgba(255,159,31,.7);
}