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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #1a1033;
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  user-select: none;
  -webkit-user-select: none;
}

#game {
  display: block;
  width: 100vw;
  height: 100vh;
  cursor: crosshair;
}

.hidden {
  display: none !important;
}

/* ===== HUD ===== */
#hud {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  padding: 12px 16px;
  pointer-events: none;
  color: #fff;
  text-shadow: 0 1px 2px rgba(0,0,0,.6);
  z-index: 10;
}

#hp-wrap {
  position: relative;
  width: 220px;
  height: 24px;
  background: rgba(0,0,0,.45);
  border: 2px solid rgba(255,255,255,.55);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  align-items: center;
}

#hp-fill {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 100%;
  background: linear-gradient(90deg, #ff6b81, #ff9f6b);
  border-radius: 10px;
  transition: width .15s ease;
}

#hp-text {
  position: relative;
  z-index: 1;
  width: 100%;
  text-align: center;
  font-size: 13px;
  font-weight: 700;
}

#ammo-wrap {
  position: absolute;
  top: 12px;
  left: 248px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 1px;
  background: rgba(0,0,0,.4);
  padding: 4px 14px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.35);
}

#weapon-panel {
  position: absolute;
  right: 16px;
  top: 12px;
  display: flex;
  gap: 8px;
  align-items: center;
  background: rgba(0,0,0,.45);
  border: 2px solid rgba(255,255,255,.4);
  border-radius: 14px;
  padding: 8px 12px;
  font-size: 12px;
}

.stat {
  text-align: center;
  line-height: 1.1;
  min-width: 44px;
}

.stat-label {
  display: block;
  font-size: 10px;
  color: #ffd9a0;
}

.stat-val {
  display: block;
  font-size: 16px;
  font-weight: 800;
}

#xp-bar {
  width: 140px;
  height: 12px;
  background: rgba(255,255,255,.18);
  border-radius: 6px;
  overflow: hidden;
  margin-left: 6px;
}

#xp-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #6fdbff, #b98cff);
  border-radius: 6px;
  transition: width .2s ease;
}

#weapon-name {
  position: absolute;
  right: 16px;
  top: 74px;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 1px;
  background: rgba(0,0,0,.45);
  padding: 4px 14px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.35);
}

#weapon-switch {
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 11px;
  color: rgba(255,255,255,.7);
  background: rgba(0,0,0,.35);
  padding: 3px 12px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,.2);
}

#wave-info {
  position: absolute;
  bottom: 12px;
  left: 16px;
  font-size: 15px;
  font-weight: 700;
  background: rgba(0,0,0,.4);
  padding: 6px 14px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.3);
}

#score-info, #kill-info {
  position: absolute;
  right: 16px;
  font-size: 16px;
  font-weight: 800;
  background: rgba(0,0,0,.4);
  padding: 6px 14px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.3);
}

#score-info { bottom: 52px; }
#kill-info { bottom: 12px; }

/* ===== Overlay ===== */
.overlay {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 50% 40%, rgba(70,40,120,.92), rgba(15,8,35,.96));
  color: #fff;
  z-index: 20;
  gap: 14px;
  text-align: center;
}

.overlay h1 {
  font-size: 52px;
  letter-spacing: 6px;
  background: linear-gradient(90deg, #ffd86f, #ff7eb3, #7ea4ff);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 4px 10px rgba(255,150,180,.35));
}

.overlay .subtitle {
  font-size: 15px;
  color: #d8c8ff;
  margin-bottom: 8px;
}

.overlay button {
  margin-top: 10px;
  padding: 14px 52px;
  font-size: 20px;
  font-weight: 800;
  color: #4a2c6a;
  background: linear-gradient(90deg, #ffd86f, #ff9f6b);
  border: none;
  border-radius: 40px;
  cursor: pointer;
  letter-spacing: 3px;
  box-shadow: 0 6px 0 #c96a3a, 0 10px 20px rgba(0,0,0,.4);
  transition: transform .06s ease, box-shadow .06s ease;
}

.overlay button:hover {
  filter: brightness(1.06);
}

.overlay button:active {
  transform: translateY(5px);
  box-shadow: 0 1px 0 #c96a3a, 0 4px 10px rgba(0,0,0,.4);
}

.controls {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  justify-content: center;
  margin: 8px 0;
}

.ctrl {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.18);
  padding: 8px 16px;
  border-radius: 12px;
  font-size: 14px;
  color: #efe6ff;
}

.ctrl b {
  color: #ffd86f;
}

.drop-legend {
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: 8px 26px;
  margin: 6px 0 4px;
  font-size: 14px;
  color: #e6dcff;
}

.drop-legend div {
  display: flex;
  align-items: center;
  gap: 6px;
}

.drop-icon {
  font-size: 16px;
}

.d-red { color: #ff5a7a; }
.d-orange { color: #ff9f3d; }
.d-cyan { color: #4ed4ff; }
.d-purple { color: #c07bff; }
.d-green { color: #5dff9b; }
.d-blue { color: #6f9bff; }
.d-amber { color: #ffd86f; }
.d-gold { color: #ffffff; }
.d-red2 { color: #ff3d5e; }
.d-gold2 { color: #ffd700; }

#gameover h1 {
  color: #ff6b81;
  -webkit-text-fill-color: #ff6b81;
}

#gameover p {
  font-size: 18px;
  color: #efe6ff;
  margin: 2px 0;
}

#toast {
  position: fixed;
  top: 84px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0,0,0,.75);
  color: #ffd86f;
  font-size: 16px;
  font-weight: 700;
  padding: 8px 20px;
  border-radius: 20px;
  border: 1px solid rgba(255,216,111,.5);
  z-index: 30;
  pointer-events: none;
  animation: toastIn .25s ease;
}

@keyframes toastIn {
  from { opacity: 0; transform: translate(-50%, -12px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}

@media (max-width: 720px) {
  #weapon-panel { display: none; }
  .drop-legend { grid-template-columns: repeat(2, auto); }
  .controls { gap: 10px; }
}