:root {
  font-family: Inter, ui-rounded, "Noto Sans", system-ui, sans-serif;
  color: #173f38;
  background: #c9e5d2;
  --deep: #1d6658;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; overflow-x: hidden; }
body { background: radial-gradient(circle at 20% 10%, #fff9d8, transparent 38rem), linear-gradient(145deg, #eaf7df, #b6deca); }
button, select { font: inherit; }
button { cursor: pointer; }
.screen[hidden] { display: none !important; }
.screen { width: min(100%, 920px); margin: auto; }

.main {
  min-height: 100svh;
  padding: max(16px, env(safe-area-inset-top)) 20px;
  display: grid;
  grid-template-rows: 58px 1fr;
}
.main-header, .scene-header {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr) 112px;
  align-items: center;
  text-align: center;
}
.return, .scene-header > button {
  justify-self: start;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 14px;
  background: #f9fff0;
  color: #173f38;
  text-decoration: none;
  font-size: 1.35rem;
}
.main-header > strong { font-size: .76rem; letter-spacing: .16em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.locale { justify-self: end; text-align: left; font-size: .68rem; font-weight: 850; display: grid; }
.locale select { max-width: 112px; border: 1px solid #a9cdb6; border-radius: 9px; padding: 5px; background: #fff; }
.hero { display: grid; grid-template-columns: minmax(260px, 470px) 1fr; gap: clamp(28px, 6vw, 70px); align-items: center; }
.hero > img { width: 100%; border-radius: 32px; box-shadow: 0 22px 60px #174b3e2b; }
.eyebrow { margin: 0; color: #277663; font-size: .75rem; font-weight: 900; letter-spacing: .14em; }
.hero h1 { font-size: clamp(2.7rem, 7vw, 5rem); line-height: .94; letter-spacing: -.05em; margin: .15em 0; }
.hero p { line-height: 1.55; }
.primary { border: 0; border-radius: 15px; padding: 14px 24px; background: linear-gradient(135deg, #287b68, #155d52); color: #fff; font-weight: 900; box-shadow: 0 8px 20px #1c5b4a33; }
.hero details { margin-top: 16px; border-top: 1px solid #a6cbb4; padding-top: 10px; }
.hero summary { font-weight: 900; }

.canvas { height: 100svh; min-height: 430px; background: linear-gradient(155deg, #fbfff4, #d5ecd8); overflow: hidden; }
.scene-header { height: 76px; padding: 10px 16px; background: #19584e; color: #fff; }
.scene-header small { font-size: .66rem; letter-spacing: .13em; opacity: .75; }
.scene-header h2 { margin: 2px 0 0; font-size: 1.16rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.scene-header > span { justify-self: end; font-size: .78rem; font-weight: 850; }
.wp-stage-shell-header > #progress { display: none !important; }
.wp-stage-shell-header > div > small { display: none !important; }

.stage { display: grid; grid-template-rows: 76px 1fr 66px; }
.stage-grid {
  overflow: auto;
  padding: 16px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(152px, 1fr));
  gap: 12px;
  align-content: start;
}
.stage > .stage-grid {
  height: 76% !important;
  align-self: start;
}
.stage-card {
  min-height: 132px;
  border: 2px solid transparent;
  border-radius: 20px;
  padding: 8px;
  background: #fafff5;
  color: #173f38;
  text-align: left;
  box-shadow: 0 8px 20px #244f4220;
  display: grid;
  grid-template-rows: 126px auto;
  gap: 4px;
}
.stage-card.selected { border-color: #ffd75e; background: #fffceb; box-shadow: 0 0 0 4px #1d6658, 0 12px 28px #173f3840; }
.stage-card:disabled { opacity: .48; }
.stage-copy, .stage-copy strong, .stage-copy span { display: block; }
.stage-copy strong { font-size: .88rem; }
.stage-copy span { margin-top: 3px; font-size: .7rem; }
.stage-preview { position: relative; display: block; justify-self: center; width: min(126px, 100%); height: 126px; border-radius: 13px; background: linear-gradient(145deg, #e1f4df, #c8e6d2); overflow: hidden; }
.preview-piece, .target-piece, .piece { position: absolute; transform-origin: 50% 50%; border: 0; }
.preview-piece { filter: saturate(.9); opacity: .95; }
.enter { justify-self: center; align-self: center; min-width: 180px; }
.stage-tabs {
  position: relative;
  z-index: 8;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: stretch;
  gap: 8px;
  height: 66px;
  padding: 7px 10px;
  border-top: 1px solid #8cc5ad;
  background: #164f46f2;
  box-shadow: 0 -8px 24px #0a352d33;
}
.stage-tabs > * { min-width: 0; }
.stage-tabs > button {
  grid-column: 2;
  min-height: 48px;
  border: 2px solid #ffe189;
  border-radius: 14px;
  background: linear-gradient(180deg, #ffe37a, #ffc94d);
  color: #173f38;
  font-weight: 900;
  box-shadow: 0 4px 0 #b97816;
}

.battle { display: grid; grid-template-rows: 76px 1fr; }
.battle-content {
  min-height: 0;
  display: grid;
  grid-template-rows: 48px minmax(0, 1fr) 50px;
  gap: 8px;
  place-items: center;
  padding: 10px 16px;
}
.goal-strip {
  width: min(92vw, 560px);
  height: 48px;
  border-radius: 14px;
  background: #fafff4e8;
  box-shadow: 0 5px 16px #173f3820;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  padding: 7px 12px;
  color: #173f38;
}
.goal-strip strong { padding: 5px 10px; border-radius: 10px; background: #ffd75e; font-size: .88rem; }
.goal-strip span { font-weight: 800; font-size: .78rem; line-height: 1.15; }
.board {
  position: relative;
  width: min(92vw, calc(100svh - 254px), 560px);
  aspect-ratio: 1 / .98;
  border: 3px solid #f9fff0;
  border-radius: 25px;
  background: linear-gradient(180deg, #f7fff0 0 74%, #d5eddb 74% 100%);
  box-shadow: 0 14px 35px #1a4a3b38;
  overflow: hidden;
  touch-action: none;
}
.board::after { content: ""; position: absolute; z-index: 1; left: 5%; right: 5%; top: 74%; height: 2px; background: #7aa98f66; pointer-events: none; }
.board > div { position: absolute; inset: 0; }

.large-a, .large-b { width: 24%; height: 24%; }
.medium { width: 18%; height: 18%; }
.small-a, .small-b, .square { width: 13%; height: 13%; }
.parallelogram { width: 19%; height: 12%; }
.large-a { background: url("assets/piece-large-a.svg") center/contain no-repeat; }
.large-b { background: url("assets/piece-large-b.svg") center/contain no-repeat; }
.medium { background: url("assets/piece-medium.svg") center/contain no-repeat; }
.small-a { background: url("assets/piece-small-a.svg") center/contain no-repeat; }
.small-b { background: url("assets/piece-small-b.svg") center/contain no-repeat; }
.square { background: url("assets/piece-square.svg") center/contain no-repeat; }
.parallelogram { background: url("assets/piece-parallelogram.svg") center/contain no-repeat; }
.target-piece { opacity: .42; filter: saturate(.85); pointer-events: none; outline: 2px dashed #173f38; outline-offset: 3px; transition: opacity .12s, filter .12s; }
.target-piece.active-target { opacity: .78; filter: saturate(1.25) drop-shadow(0 0 8px #ffd75e); }
.piece { z-index: 2; filter: drop-shadow(0 5px 3px #244b3d55); touch-action: none; }
.piece:focus-visible { outline: 4px solid #ffd75e; outline-offset: 4px; }
.piece.placed { outline: 3px solid #fff; filter: drop-shadow(0 0 7px #e9b741); }
.tools { display: flex; gap: 8px; }
.tools button, dialog button { min-height: 44px; border: 1px solid #a8c7b0; border-radius: 12px; background: #fafff4; color: #173f38; padding: 9px 18px; font-weight: 850; }
.tools button:first-child { background: #ffd75e; border-color: #d8ad2f; }

dialog { width: min(430px, calc(100% - 28px)); border: 0; border-radius: 25px; text-align: center; padding: 28px; color: #173f38; background: #fbfff3; box-shadow: 0 28px 80px #10372f77; }
dialog::backdrop { background: #0b2e29aa; backdrop-filter: blur(4px); }
.result-mark { width: 72px; height: 72px; border-radius: 50%; display: grid; place-items: center; margin: auto; background: #62b878; color: #fff; font-size: 2rem; font-weight: 950; }
dialog h2 { margin: .2rem 0; }
dialog > div:last-child { display: flex; justify-content: center; gap: 9px; margin-top: 18px; }
dialog .primary { background: #1c6b5c; color: #fff; }

@media (max-width: 680px) {
  .main-header { grid-template-columns: 70px minmax(0, 1fr) 100px; }
  .hero { grid-template-columns: 1fr; text-align: center; gap: 18px; }
  .hero > img { width: min(70vw, 320px); justify-self: center; }
  .hero h1 { font-size: clamp(2.5rem, 13vw, 4rem); }
  .stage-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); padding: 12px; }
}

@media (max-height: 500px) and (orientation: landscape) {
  .canvas { height: 100svh; min-height: 0; }
  .scene-header { height: 58px; padding: 5px 12px; }
  .stage { grid-template-rows: 58px 1fr 54px; }
  .stage-grid { grid-template-columns: repeat(6, 152px); padding: 8px; }
  .stage-tabs { height: 54px; padding-block: 3px; }
  .battle { grid-template-rows: 58px 1fr; }
  .battle-content { grid-template-columns: minmax(270px, 360px) 180px; grid-template-rows: 48px 1fr 48px; justify-content: center; gap: 6px 18px; padding: 6px; }
  .goal-strip { grid-column: 2; grid-row: 1; width: 100%; height: 48px; }
  .board { grid-column: 1; grid-row: 1 / 4; width: min(300px, calc(100svh - 70px)); }
  .tools { grid-column: 2; grid-row: 2; display: grid; width: 100%; align-self: center; }
}