:root {
  color-scheme: light;
  font-family: "Trebuchet MS", "Verdana", sans-serif;
  --ink: #151515;
  --panel: #fff4d6;
  --cream: #ffe8a8;
  --sky: #6bd7ff;
  --sky-dark: #2f9ed8;
  --hill: #3fb950;
  --hill-dark: #19723a;
  --grass: #25c24a;
  --grass-light: #9df25f;
  --dirt: #9b5a2e;
  --dirt-dark: #5a321f;
  --block: #ffd23f;
  --block-side: #f59e0b;
  --spike: #cbd5e1;
  --spike-dark: #64748b;
}

* { box-sizing: border-box; }
html { min-width: 320px; background: #80e2ff; }
body { margin: 0; color: var(--ink); }
button, kbd { font: inherit; }

.page {
  min-height: 100svh;
  padding: 14px;
  display: grid;
  place-items: center;
  background:
    repeating-linear-gradient(0deg, rgb(255 255 255 / .22) 0 3px, transparent 3px 36px),
    repeating-linear-gradient(90deg, rgb(255 255 255 / .18) 0 3px, transparent 3px 36px),
    linear-gradient(180deg, #7be0ff 0%, #b8f25f 62%, #f5a13b 100%);
}

.game-shell { width: min(1320px, 100%); }

.hud {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
}

.eyebrow {
  margin: 0 0 4px;
  font-size: .78rem;
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
}

h1, h2, p { margin-top: 0; }

h1 {
  margin-bottom: 0;
  font-size: clamp(2rem, 3.8rem, 3.8rem);
  line-height: .95;
  text-shadow: 4px 4px 0 #ffffff, 8px 8px 0 rgb(21 21 21 / .18);
}

.scores { display: flex; gap: 8px; }

.scores div {
  min-width: 86px;
  padding: 9px 12px;
  border: 4px solid var(--ink);
  background: var(--cream);
  box-shadow: 5px 5px 0 var(--ink);
  text-align: center;
}

.scores span,
.scores strong { display: block; }
.scores span { font-size: .72rem; font-weight: 900; text-transform: uppercase; }
.scores strong { font-size: 1.5rem; }

.game {
  position: relative;
  width: 100%;
  height: clamp(500px, 76svh, 760px);
  overflow: hidden;
  border: 6px solid var(--ink);
  background:
    linear-gradient(180deg, var(--sky) 0 58%, var(--sky-dark) 58% 60%, var(--hill) 60% 72%, var(--grass) 72% 100%);
  box-shadow: 10px 10px 0 var(--ink);
  cursor: pointer;
  touch-action: manipulation;
  image-rendering: pixelated;
}

.game::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    linear-gradient(rgb(0 0 0 / .1) 2px, transparent 2px),
    linear-gradient(90deg, rgb(0 0 0 / .1) 2px, transparent 2px);
  background-size: 24px 24px;
  pointer-events: none;
}

.sun,
.cloud,
.hill-row,
.blocky,
.spikes,
.ground,
.overlay,
.sound-toggle { position: absolute; }

.sun {
  top: 34px;
  right: 10%;
  z-index: 2;
  width: 92px;
  height: 92px;
  border: 6px solid var(--ink);
  background: #ffe45e;
  box-shadow: 9px 9px 0 #f97316, 15px 15px 0 var(--ink);
}

.cloud {
  z-index: 2;
  width: 144px;
  height: 48px;
  background: #ffffff;
  border: 5px solid var(--ink);
  box-shadow: 6px 6px 0 rgb(21 21 21 / .28);
}

.cloud::before,
.cloud::after {
  content: "";
  position: absolute;
  bottom: 18px;
  width: 48px;
  height: 48px;
  background: #ffffff;
  border: 5px solid var(--ink);
  border-bottom: 0;
}

.cloud::before { left: 18px; }
.cloud::after { right: 18px; }
.cloud-one { top: 86px; left: 9%; }
.cloud-two { top: 148px; left: 52%; transform: scale(.72); }

.hill-row {
  left: -40px;
  right: -40px;
  bottom: 27%;
  z-index: 2;
  height: 132px;
  background:
    linear-gradient(135deg, transparent 0 46%, var(--hill-dark) 46% 54%, transparent 54%) 0 100% / 132px 132px repeat-x,
    linear-gradient(225deg, transparent 0 46%, #64d96a 46% 54%, transparent 54%) 66px 100% / 132px 132px repeat-x;
}

.ground {
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 3;
  height: 24%;
  border-top: 6px solid var(--ink);
  background:
    repeating-linear-gradient(90deg, var(--grass-light) 0 28px, var(--grass) 28px 56px),
    repeating-linear-gradient(45deg, var(--dirt) 0 18px, var(--dirt-dark) 18px 36px);
}

.ground::after {
  content: "";
  position: absolute;
  inset: 34px 0 0;
  background: repeating-linear-gradient(45deg, var(--dirt) 0 22px, var(--dirt-dark) 22px 44px);
}

.blocky {
  left: 11%;
  bottom: 21%;
  z-index: 5;
  width: clamp(110px, 13vw, 170px);
  height: clamp(110px, 13vw, 170px);
  border: 6px solid var(--ink);
  background:
    linear-gradient(135deg, #fff06a 0 20%, var(--block) 20% 72%, var(--block-side) 72% 100%);
  box-shadow: 10px 10px 0 var(--ink);
  transform-origin: center bottom;
}

.blocky::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgb(255 255 255 / .24) 2px, transparent 2px),
    linear-gradient(90deg, rgb(255 255 255 / .24) 2px, transparent 2px);
  background-size: 16px 16px;
}

.pixel {
  position: absolute;
  z-index: 2;
  display: block;
}

.eye {
  top: 32%;
  width: 15%;
  height: 15%;
  background: var(--ink);
}

.eye-left { left: 25%; }
.eye-right { right: 25%; }

.mouth {
  left: 32%;
  bottom: 21%;
  width: 36%;
  height: 24%;
  background: transparent;
  border-left: clamp(8px, 1vw, 12px) solid var(--ink);
  border-right: clamp(8px, 1vw, 12px) solid var(--ink);
  border-bottom: clamp(8px, 1vw, 12px) solid var(--ink);
}

.cheek {
  top: 54%;
  width: 11%;
  height: 9%;
  background: #ff8fab;
}

.cheek-left { left: 13%; }
.cheek-right { right: 13%; }

.blocky.is-jumping { animation: blocky-jump 820ms steps(9, end) forwards; }

@keyframes blocky-jump {
  0%, 100% { transform: translateY(0); }
  38% { transform: translateY(-250px); }
  62% { transform: translateY(-228px); }
}

.spikes {
  right: -150px;
  bottom: 21%;
  z-index: 5;
  width: clamp(92px, 9vw, 128px);
  height: clamp(92px, 11vw, 148px);
  filter: drop-shadow(8px 8px 0 var(--ink));
}

.spikes span {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--spike-dark) 0 22%, var(--spike) 22% 68%, #f8fafc 68% 78%, var(--spike-dark) 78% 100%);
  border: 5px solid var(--ink);
  border-bottom: 0;
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
}

.spikes.is-running { animation: spike-run var(--run-duration, 3.35s) linear infinite; }

@keyframes spike-run {
  from { right: -150px; }
  to { right: calc(100% + 150px); }
}

.overlay {
  inset: 0;
  z-index: 8;
  display: grid;
  place-content: center;
  padding: 26px;
  text-align: center;
  background: rgb(255 244 214 / .34);
}

.overlay.is-hidden { display: none; }
.overlay-kicker { margin-bottom: 8px; font-weight: 900; text-transform: uppercase; }
.overlay h2 { margin-bottom: 10px; font-size: clamp(1.45rem, 2.4rem, 2.4rem); }
.overlay p { max-width: 520px; }
.overlay h2,
.overlay p,
.overlay-kicker { text-shadow: 2px 2px 0 var(--panel); }

button {
  justify-self: center;
  margin-top: 8px;
  padding: 12px 18px;
  border: 4px solid var(--ink);
  background: #f72585;
  color: #ffffff;
  font-weight: 900;
  cursor: pointer;
  box-shadow: 5px 5px 0 var(--ink);
}

button:hover { background: #4361ee; }
button:active { transform: translate(3px, 3px); box-shadow: 2px 2px 0 var(--ink); }

.sound-toggle {
  top: 14px;
  left: 14px;
  z-index: 9;
  width: 64px;
  height: 48px;
  display: grid;
  place-items: center;
  padding: 0;
  font-size: .9rem;
}

kbd {
  padding: 1px 6px;
  border: 2px solid var(--ink);
  background: #ffffff;
  font-weight: 900;
}

.hint { margin: 16px 0 0; font-size: .95rem; font-weight: 700; }

@media (max-width: 720px) {
  .page { padding: 10px; }
  .hud { align-items: start; }
  h1 { font-size: 2rem; }
  .scores div { min-width: 68px; padding: 7px 8px; }
  .game { height: 75svh; min-height: 440px; border-width: 5px; }
  .sun { width: 66px; height: 66px; }
  .cloud { transform: scale(.72); transform-origin: left top; }
  .cloud-two { display: none; }
  .blocky { left: 8%; bottom: 21%; }
  .blocky.is-jumping { animation-name: blocky-small-jump; }
  .spikes { width: 86px; height: 100px; }
  .hint { font-size: .86rem; }
}

@keyframes blocky-small-jump {
  0%, 100% { transform: translateY(0); }
  38% { transform: translateY(-215px); }
  62% { transform: translateY(-172px); }
}
.credits {
  margin-top: 22px;
  text-align: center;
  font-size: .9rem;
  font-weight: 800;
  line-height: 1.6;
}

.credits a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-thickness: 2px;
}

.credits a:hover {
  color: #4361ee;
}