:root {
  color-scheme: dark;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  background: #05070a;
  color: #eef6ff;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  user-select: none;
}

body {
  cursor: crosshair;
}

#game-shell {
  position: relative;
  width: 100vw;
  height: 100vh;
  min-width: 320px;
  min-height: 420px;
  background:
    radial-gradient(circle at 20% 15%, rgba(44, 104, 138, 0.22), transparent 28rem),
    radial-gradient(circle at 76% 82%, rgba(112, 84, 42, 0.18), transparent 24rem),
    #05070a;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}

#hud {
  position: absolute;
  z-index: 2;
  top: max(14px, env(safe-area-inset-top));
  left: max(14px, env(safe-area-inset-left));
  right: max(14px, env(safe-area-inset-right));
  display: grid;
  grid-template-columns: repeat(3, minmax(0, max-content));
  gap: 12px;
  align-items: start;
  pointer-events: none;
}

#command-readout {
  position: absolute;
  z-index: 4;
  top: max(14px, env(safe-area-inset-top));
  right: max(14px, env(safe-area-inset-right));
  display: grid;
  grid-template-columns: minmax(190px, max-content) minmax(190px, max-content);
  gap: 14px;
  min-width: 420px;
  border: 1px solid rgba(232, 248, 255, 0.46);
  border-radius: 6px;
  background: rgba(4, 8, 12, 0.76);
  padding: 8px 10px;
  box-shadow: 0 10px 36px rgba(0, 0, 0, 0.32);
  pointer-events: none;
}

#game-shell[data-playing="true"] #command-readout {
  display: none;
}

#game-shell[data-playing="true"] .pregame-hud-block {
  display: none;
}

#settings-scrim {
  position: absolute;
  z-index: 5;
  inset: 0;
  border: 0;
  background: transparent;
  padding: 0;
  cursor: crosshair;
}

#settings-scrim[hidden] {
  display: none;
}

.icon-button {
  position: absolute;
  z-index: 7;
  right: max(14px, env(safe-area-inset-right));
  bottom: max(14px, env(safe-area-inset-bottom));
  width: 44px;
  height: 44px;
  border: 1px solid rgba(233, 246, 255, 0.58);
  border-radius: 6px;
  background: rgba(5, 9, 13, 0.78);
  color: #ffffff;
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 10px 34px rgba(0, 0, 0, 0.34);
}

.icon-button:hover,
.icon-button:focus-visible {
  background: rgba(118, 211, 255, 0.22);
  outline: none;
}

#settings-panel {
  position: absolute;
  z-index: 7;
  right: max(14px, env(safe-area-inset-right));
  bottom: calc(max(14px, env(safe-area-inset-bottom)) + 54px);
  display: grid;
  gap: 14px;
  width: min(340px, calc(100vw - 28px));
  border: 1px solid rgba(232, 248, 255, 0.46);
  border-radius: 6px;
  background: rgba(4, 8, 12, 0.9);
  padding: 14px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.44);
}

#settings-panel[hidden] {
  display: none;
}

.settings-row {
  display: grid;
  grid-template-columns: minmax(70px, 0.72fr) minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  color: #f8fcff;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 13px;
}

.settings-row-stack {
  grid-template-columns: 1fr;
  gap: 8px;
}

.toggle-button,
.segmented-control button {
  min-height: 34px;
  border: 1px solid rgba(233, 246, 255, 0.46);
  border-radius: 6px;
  background: rgba(237, 247, 255, 0.08);
  color: #f8fcff;
  font: 800 12px/1 "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  cursor: pointer;
}

.toggle-button[aria-pressed="true"],
.segmented-control button[aria-pressed="true"] {
  background: rgba(255, 255, 255, 0.22);
  border-color: rgba(255, 255, 255, 0.78);
}

#volume-slider {
  width: 100%;
  accent-color: #ffffff;
}

#control-mapping-panel {
  display: grid;
  gap: 8px;
}

#control-mapping-panel label {
  display: grid;
  grid-template-columns: minmax(84px, 0.72fr) minmax(0, 1fr);
  gap: 10px;
  align-items: center;
}

#control-mapping-panel select {
  width: 100%;
  min-height: 34px;
  border: 1px solid rgba(233, 246, 255, 0.46);
  border-radius: 6px;
  background: rgba(5, 9, 13, 0.96);
  color: #f8fcff;
  font: 800 12px/1 "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

#starting-lives-input {
  width: 100%;
  min-height: 34px;
  border: 1px solid rgba(233, 246, 255, 0.46);
  border-radius: 6px;
  background: rgba(5, 9, 13, 0.96);
  color: #f8fcff;
  font: 800 12px/1 "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  padding: 0 8px;
}

.segmented-control {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.readout-item {
  min-width: 0;
}

#mouse-activity,
#input-action {
  display: block;
  min-height: 22px;
  color: #ffffff;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: clamp(15px, 2.2vh, 19px);
  line-height: 1.1;
}

.hud-block {
  min-width: 84px;
  border: 1px solid rgba(185, 215, 235, 0.22);
  border-radius: 6px;
  background: rgba(5, 9, 13, 0.58);
  padding: 8px 10px;
  box-shadow: 0 10px 36px rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(10px);
}

.hud-label {
  display: block;
  margin-bottom: 3px;
  color: #9fb4c2;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

#score,
#wave,
#high-score {
  display: block;
  min-height: 22px;
  color: #f6fbff;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: clamp(16px, 2.5vh, 21px);
  line-height: 1.1;
}

#lives {
  display: flex;
  min-height: 22px;
  gap: 6px;
  align-items: center;
}

.life-ship {
  position: relative;
  display: inline-block;
  width: 16px;
  height: 22px;
  flex: 0 0 auto;
}

.life-ship::before {
  position: absolute;
  inset: 0;
  content: "";
  background: #f6fbff;
  clip-path: polygon(50% 0, 92% 100%, 50% 72%, 8% 100%);
}

.life-ship::after {
  position: absolute;
  left: 6px;
  top: 7px;
  width: 4px;
  height: 8px;
  content: "";
  background: #05070a;
  transform: skewY(-12deg);
}

#status-panel {
  position: absolute;
  z-index: 3;
  inset: 0;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 18px;
  background: rgba(1, 4, 7, 0.22);
  pointer-events: none;
}

#status-panel[hidden] {
  display: none;
}

#game-shell[data-game-over="true"] #intro-crawl {
  display: none;
}

#intro-crawl {
  width: min(680px, calc(100vw - 36px));
  height: clamp(168px, 27vh, 250px);
  overflow: hidden;
  perspective: 420px;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, #000 12%, #000 88%, transparent 100%);
  mask-image: linear-gradient(to bottom, transparent 0%, #000 12%, #000 88%, transparent 100%);
}

#intro-crawl-text {
  animation: intro-crawl-scroll 64s linear infinite;
  /* Pinned to the original 3-paragraph block's bottom (141px) so adding
     instruction lines below does not move the perspective pivot and shrink
     the opening text. Do not change without re-measuring the opening block. */
  transform-origin: 50% 141px;
}

#intro-crawl p {
  margin: 0 0 10px;
  color: #f8fcff;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: clamp(18px, 3vh, 26px);
  font-weight: 800;
  line-height: 1.35;
  text-align: center;
  text-transform: uppercase;
  text-shadow:
    0 0 12px rgba(255, 255, 255, 0.62),
    0 12px 30px rgba(0, 0, 0, 0.72);
}

@keyframes intro-crawl-scroll {
  0% {
    opacity: 0;
    transform: rotateX(28deg) translateY(226px) scale(1.04);
  }

  3% {
    opacity: 1;
  }

  97% {
    opacity: 1;
  }

  100% {
    opacity: 0;
    transform: rotateX(34deg) translateY(-880px) scale(0.68);
  }
}

#status-title {
  margin: 0;
  color: #f7fbff;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: clamp(34px, 9vw, 96px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0;
  text-shadow:
    0 0 20px rgba(108, 201, 255, 0.34),
    0 10px 36px rgba(0, 0, 0, 0.62);
}

#controls-panel {
  display: grid;
  gap: 8px;
  width: min(430px, calc(100vw - 36px));
  padding: 12px;
  border: 1px solid rgba(232, 248, 255, 0.4);
  border-radius: 6px;
  background: rgba(4, 8, 12, 0.72);
  box-shadow: 0 12px 42px rgba(0, 0, 0, 0.38);
}

#controls-panel div {
  display: grid;
  grid-template-columns: minmax(120px, 1fr) minmax(0, 1.4fr);
  gap: 12px;
  align-items: center;
  color: #f8fcff;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: clamp(12px, 2.2vh, 15px);
  line-height: 1.2;
}

#controls-panel strong {
  color: #ffffff;
}

#controls-panel span {
  color: #bdeeff;
}

#restart-button {
  min-width: 132px;
  min-height: 42px;
  border: 1px solid rgba(233, 246, 255, 0.58);
  border-radius: 6px;
  background: rgba(237, 247, 255, 0.1);
  color: #f8fcff;
  font: 800 14px/1 "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  letter-spacing: 0;
  cursor: pointer;
  pointer-events: auto;
}

#restart-button:hover,
#restart-button:focus-visible {
  background: rgba(118, 211, 255, 0.22);
  outline: none;
}

#coin-insert {
  position: absolute;
  inset: 0;
  z-index: 4;
  display: grid;
  place-items: center;
  background: rgba(1, 4, 7, 0.55);
  pointer-events: none;
}

#coin-insert[hidden] {
  display: none;
}

.coin-machine {
  position: relative;
  width: 220px;
  height: 260px;
}

/* Faceplate sits in front of the coin so the coin disappears "into" the slot. */
.coin-plate {
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  z-index: 2;
  width: 200px;
  padding: 26px 0 18px;
  border: 1px solid rgba(20, 28, 36, 0.9);
  border-radius: 10px;
  background:
    linear-gradient(160deg, #cdd6df 0%, #8c97a3 22%, #b6c0ca 48%, #6f7a86 78%, #aab4be 100%);
  box-shadow:
    inset 0 2px 3px rgba(255, 255, 255, 0.65),
    inset 0 -3px 6px rgba(0, 0, 0, 0.45),
    0 14px 40px rgba(0, 0, 0, 0.55);
  display: grid;
  justify-items: center;
  gap: 14px;
}

.coin-slot {
  width: 96px;
  height: 16px;
  border-radius: 9px;
  background: radial-gradient(ellipse at center, #1c2329 0%, #05080b 70%);
  box-shadow:
    inset 0 3px 5px rgba(0, 0, 0, 0.95),
    inset 0 -1px 1px rgba(255, 255, 255, 0.18),
    0 0 12px rgba(118, 211, 255, 0.35);
}

.coin-label {
  color: #11181f;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.5);
}

.coin {
  position: absolute;
  left: 50%;
  top: 0;
  z-index: 1;
  width: 74px;
  height: 74px;
  margin-left: -37px;
  border-radius: 50%;
  background-color: #c8cdd2;
  background-image: url("./assets/20cents.jpg");
  background-size: 122%;
  background-position: center;
  background-repeat: no-repeat;
  /* Milled rim + relief shading over the platypus photo. */
  box-shadow:
    inset 0 0 0 2px rgba(150, 158, 166, 0.85),
    inset 0 2px 5px rgba(255, 255, 255, 0.55),
    inset 0 -3px 7px rgba(58, 64, 70, 0.5),
    0 6px 14px rgba(0, 0, 0, 0.5);
  opacity: 0;
}

.coin-credit {
  position: absolute;
  left: 50%;
  top: -34px;
  transform: translateX(-50%);
  z-index: 3;
  color: #bdeeff;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
  text-shadow: 0 0 12px rgba(118, 211, 255, 0.7);
  opacity: 0;
}

/* Slot opening, centered horizontally, sits ~204px down from the machine top. */
#coin-insert.is-playing .coin {
  animation: coin-drop 1s ease-in forwards;
}

#coin-insert.is-playing .coin-credit {
  animation: credit-flash 0.55s steps(2, jump-none) 1s 2 forwards;
}

@keyframes coin-drop {
  0% {
    opacity: 0;
    transform: translateY(-10px) rotateX(0deg) scaleY(1);
  }
  12% {
    opacity: 1;
  }
  72% {
    opacity: 1;
    transform: translateY(196px) rotateX(0deg) scaleY(1);
  }
  /* Reaches the slot line: tilt edge-on and slip behind the faceplate. */
  100% {
    opacity: 1;
    transform: translateY(210px) rotateX(82deg) scaleY(0.25);
  }
}

@keyframes credit-flash {
  0% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  #coin-insert {
    display: none !important;
  }
}

@media (max-width: 520px) {
  #hud {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
    right: max(14px, env(safe-area-inset-right));
  }

  .hud-block {
    min-width: 0;
    padding: 7px 8px;
  }

  #command-readout {
    top: calc(max(14px, env(safe-area-inset-top)) + 62px);
    left: max(14px, env(safe-area-inset-left));
    right: max(14px, env(safe-area-inset-right));
    grid-template-columns: 1fr;
    gap: 7px;
    min-width: 0;
  }

  #controls-panel div {
    grid-template-columns: 1fr;
    gap: 3px;
  }
}