:root {
  --grass: #6db83f;
  --ink: #2a3a1a;
  --cream: #fff8e6;
  --gold: #f0c14a;
  --rose: #e23d4a;
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  touch-action: none;
}

html,
body {
  margin: 0;
  height: 100%;
  height: 100dvh;
  overflow: hidden;
  font-family: "Jua", system-ui, sans-serif;
  background:
    radial-gradient(ellipse at 40% 0%, rgba(180, 230, 120, 0.45), transparent 50%),
    linear-gradient(180deg, #8fd45a 0%, #4a8a32 55%, #2f5e22 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink);
}

.stage {
  position: relative;
  width: min(100vw, calc(100dvh * 0.557));
  height: min(100dvh, calc(100vw / 0.557));
  max-width: 420px;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 22px 55px rgba(30, 50, 10, 0.4);
  border: 3px solid rgba(255, 248, 230, 0.55);
  background: #5aa838;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.hud {
  position: absolute;
  top: 10px;
  left: 10px;
  right: 10px;
  display: flex;
  justify-content: space-between;
  gap: 8px;
  pointer-events: none;
  z-index: 3;
}

.panel {
  background: rgba(28, 42, 16, 0.5);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 248, 230, 0.22);
  border-radius: 14px;
  padding: 8px 12px;
  color: #fff8e6;
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 13px;
  min-width: 100px;
}

.panel.right {
  align-items: flex-end;
}

.panel b {
  color: #ffe27a;
  font-weight: 400;
}

.gold b {
  color: #ffe27a;
}

.wave-meter {
  position: absolute;
  top: 72px;
  left: 12px;
  right: 12px;
  height: 8px;
  border-radius: 999px;
  background: rgba(20, 30, 10, 0.35);
  overflow: hidden;
  pointer-events: none;
  z-index: 3;
  border: 1px solid rgba(255, 248, 230, 0.2);
}

.wave-meter > i {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #7ec8ff, #ffe27a);
  border-radius: inherit;
  transition: width 0.15s ease;
}

.wave-label {
  position: absolute;
  top: 84px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  pointer-events: none;
  font-size: 12px;
  color: #fff8e6;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.45);
  letter-spacing: 0.06em;
}

.shop {
  position: absolute;
  bottom: 14px;
  left: 10px;
  right: 10px;
  z-index: 4;
  display: flex;
  gap: 8px;
  justify-content: flex-start;
  overflow-x: auto;
  flex-wrap: nowrap;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: 2px;
}

.shop::-webkit-scrollbar {
  display: none;
}

.tower-btn {
  flex: 0 0 auto;
  min-width: 72px;
  appearance: none;
  border: 2px solid rgba(255, 248, 230, 0.35);
  background: rgba(28, 42, 16, 0.72);
  backdrop-filter: blur(8px);
  color: #fff8e6;
  border-radius: 16px;
  padding: 8px 6px 10px;
  font-family: inherit;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  cursor: pointer;
  transition: transform 0.1s ease, border-color 0.15s ease, background 0.15s ease;
}

.tower-btn .ico {
  font-size: 22px;
  line-height: 1.2;
}

.tower-btn .ico-img {
  width: 40px;
  height: 40px;
  object-fit: contain;
  filter: drop-shadow(0 2px 3px rgba(0, 0, 0, 0.35));
  pointer-events: none;
}

.tower-btn.thrower {
  border-color: rgba(255, 160, 80, 0.45);
}

.tower-btn.frost {
  border-color: rgba(120, 200, 255, 0.45);
}

.tower-btn.sniper {
  border-color: rgba(154, 224, 106, 0.45);
}

.tower-btn.mortar {
  border-color: rgba(184, 152, 112, 0.45);
}

.tower-btn.thunder {
  border-color: rgba(192, 144, 255, 0.45);
}

.tower-btn.locked {
  opacity: 0.5;
  cursor: not-allowed;
}

.tower-btn .lock {
  font-size: 20px;
  line-height: 1.2;
}

.tower-btn .unlock {
  font-size: 11px;
  color: rgba(255, 248, 230, 0.65);
}

.tower-btn .name {
  font-size: 13px;
}

.tower-btn .cost {
  font-size: 12px;
  color: #ffe27a;
}

.tower-btn.selected {
  border-color: #ffe27a;
  background: rgba(60, 90, 20, 0.85);
  box-shadow: 0 0 0 2px rgba(240, 193, 74, 0.35);
}

.tower-btn:active {
  transform: scale(0.96);
}

.tower-btn.disabled {
  opacity: 0.45;
}

.hint {
  position: absolute;
  bottom: 92px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  pointer-events: none;
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(28, 42, 16, 0.55);
  border: 1px solid rgba(255, 248, 230, 0.2);
  color: #fff8e6;
  font-size: 12px;
  white-space: nowrap;
  transition: opacity 0.3s ease;
}

.hint.fade {
  opacity: 0;
}

.upgrade-panel {
  position: absolute;
  bottom: 100px;
  left: 12px;
  right: 12px;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 18px;
  background: rgba(20, 32, 12, 0.82);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 226, 122, 0.45);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.28);
}

.upgrade-panel.hidden {
  display: none;
}

.up-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
  color: #fff8e6;
  text-align: left;
  min-width: 0;
}

.up-info b {
  font-size: 16px;
  color: #ffe27a;
}

.up-info #up-level {
  font-size: 12px;
  color: #9ae06a;
}

.up-info #up-stats {
  font-size: 12px;
  opacity: 0.85;
}

.up-btn {
  appearance: none;
  border: none;
  font-family: inherit;
  font-size: 14px;
  padding: 10px 14px;
  border-radius: 999px;
  background: linear-gradient(180deg, #ffe28a, #e0b030);
  color: #2a1a05;
  cursor: pointer;
  white-space: nowrap;
  box-shadow: 0 4px 0 #9a6e10;
}

.up-btn:active {
  transform: translateY(2px);
  box-shadow: 0 2px 0 #9a6e10;
}

.up-btn:disabled {
  opacity: 0.45;
  box-shadow: none;
}

.up-btn.max {
  background: linear-gradient(180deg, #9ae06a, #4aaa30);
  color: #143010;
  box-shadow: 0 4px 0 #2e6a18;
}

.up-close {
  appearance: none;
  border: none;
  background: rgba(255, 255, 255, 0.12);
  color: #fff8e6;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-size: 14px;
  cursor: pointer;
}

.overlay {
  position: absolute;
  inset: 0;
  z-index: 6;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px;
  background:
    radial-gradient(ellipse at 50% 18%, rgba(255, 240, 160, 0.35), transparent 48%),
    linear-gradient(180deg, rgba(90, 160, 50, 0.94), rgba(35, 70, 25, 0.96));
}

.overlay.hidden {
  display: none;
}

.badge {
  display: inline-block;
  background: linear-gradient(180deg, #ffe27a, #e0b030);
  color: #3a2a08;
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 12px;
  margin-bottom: 8px;
  letter-spacing: 0.04em;
}

.badge.soft {
  background: linear-gradient(180deg, #9ae06a, #4aaa30);
  color: #143010;
}

.title-thumb {
  border-radius: 28px;
  margin-bottom: 10px;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.3);
  border: 2px solid rgba(255, 226, 122, 0.5);
}

.overlay h1 {
  font-family: "Bagel Fat One", "Jua", sans-serif;
  font-size: 40px;
  margin: 4px 0 10px;
  color: #fff8e6;
  text-shadow: 0 4px 0 rgba(40, 70, 10, 0.35);
}

.overlay p {
  margin: 0 0 12px;
  color: rgba(255, 248, 230, 0.85);
  line-height: 1.45;
  font-size: 16px;
}

.icons {
  margin-bottom: 16px;
  color: #ffe27a;
  font-size: 14px;
}

.btn {
  appearance: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 20px;
  padding: 12px 28px;
  border-radius: 999px;
  color: #2a1a05;
  background: linear-gradient(180deg, #ffe28a, #e0b030);
  box-shadow: 0 8px 0 #9a6e10, 0 14px 28px rgba(0, 0, 0, 0.25);
  margin-bottom: 14px;
}

.btn:active {
  transform: translateY(3px);
  box-shadow: 0 4px 0 #9a6e10, 0 8px 16px rgba(0, 0, 0, 0.25);
}

.overlay a {
  color: #fff8e6;
  text-decoration: none;
  font-size: 14px;
  opacity: 0.85;
}

.shop.hidden,
.hint.hidden {
  display: none;
}