/* パイプパズル固有スタイル */

.pp-settings {
  max-width: min(100%, 520px);
  margin: 4px auto 14px;
  text-align: center;
}

.pp-settings .field-label {
  margin-bottom: 8px;
}

.option-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  width: 100%;
}

.option-tab {
  appearance: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  min-height: 48px;
  padding: 8px 6px;
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-sys-shape-corner-medium);
  background: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  font: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease, transform 0.04s ease;
}

.option-tab small {
  font-size: 0.7rem;
  font-weight: 500;
  opacity: 0.75;
}

.option-tab:hover {
  background: var(--md-sys-color-primary-container);
}

.option-tab:active {
  transform: translateY(1px);
}

.option-tab.is-active {
  background: var(--md-sys-color-primary);
  border-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
}

.option-tab:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--md-sys-color-primary) 70%, white);
  outline-offset: 2px;
}

.game-panel {
  margin-top: 20px;
}

.pp-status {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 8px;
  max-width: min(100%, 420px);
  margin: 0 auto 14px;
  padding: 12px 10px;
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-sys-shape-corner-medium);
  background: var(--md-sys-color-surface);
}

.pp-status__item {
  display: flex;
  flex: 1 1 0;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  min-width: 0;
  padding: 6px 4px;
  border-radius: var(--md-sys-shape-corner-medium);
  background: color-mix(in srgb, var(--md-sys-color-primary) 8%, var(--md-sys-color-surface));
}

.pp-status__label {
  color: var(--md-sys-color-on-surface-variant);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.pp-status__value {
  color: var(--md-sys-color-on-surface);
  font-size: 1.15rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}

/* クリア結果は盤面の上に重ねて表示する（ブロック崩しの結果表示と同じ見た目） */
.pp-stage {
  position: relative;
  width: 100%;
}

.pp-result {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 20px 16px;
  border-radius: var(--md-sys-shape-corner-large);
  background: rgba(11, 20, 42, 0.92);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  text-align: center;
  animation: pp-result-in 180ms ease-out;
}

.pp-result__title {
  margin: 0;
  color: #a8f0ff;
  font-family: "Outfit", "Noto Sans JP", sans-serif;
  font-size: clamp(1.5rem, 7vw, 2.1rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  text-shadow: 0 0 18px rgba(96, 220, 255, 0.7), 0 0 34px rgba(150, 106, 255, 0.45);
}

.pp-result__detail {
  margin: 0;
  color: rgba(230, 240, 255, 0.86);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.pp-result__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 12px;
}

.pp-result__actions .btn {
  min-width: 8.5rem;
  justify-content: center;
}

@keyframes pp-result-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* 盤面: 外周1列ずつを端点用の細いトラックにしたグリッド */

.pp-board-wrap {
  display: flex;
  justify-content: center;
  width: 100%;
  max-width: min(100%, 460px);
  margin: 0 auto 10px;
}

.pp-board-wrap--7 {
  max-width: min(100%, 500px);
}

.pp-board-wrap--9 {
  max-width: min(100%, 540px);
}

.pp-board {
  --pp-size: 5;
  --pp-edge: clamp(18px, 5vw, 28px);
  --pp-gap: 4px;
  --pp-start: #3ee6a0;
  --pp-goal: #ff5fa8;
  --pp-idle: #5d7fb2;
  --pp-link: #45d8ff;
  display: grid;
  grid-template-columns: var(--pp-edge) repeat(var(--pp-size), minmax(0, 1fr)) var(--pp-edge);
  grid-template-rows: var(--pp-edge) repeat(var(--pp-size), auto) var(--pp-edge);
  gap: var(--pp-gap);
  width: 100%;
  padding: 6px;
  border: 1px solid rgba(96, 154, 214, 0.35);
  border-radius: var(--md-sys-shape-corner-large);
  background:
    radial-gradient(circle at 18% 0%, rgba(63, 196, 255, 0.14), transparent 62%),
    radial-gradient(circle at 86% 100%, rgba(150, 106, 255, 0.12), transparent 60%),
    linear-gradient(160deg, #16264a 0%, #101c38 55%, #0d1730 100%);
  box-shadow: 0 14px 34px rgba(28, 52, 96, 0.24), inset 0 0 0 1px rgba(255, 255, 255, 0.04);
  user-select: none;
  -webkit-user-select: none;
}

.pp-board[data-size="7"] {
  --pp-gap: 3px;
}

.pp-board[data-size="9"] {
  --pp-gap: 2px;
}

.pp-cell {
  position: relative;
  appearance: none;
  display: block;
  min-width: 0;
  aspect-ratio: 1 / 1;
  padding: 0;
  overflow: hidden;
  border: 1px solid rgba(120, 160, 210, 0.22);
  border-radius: clamp(4px, 1.4vw, 8px);
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.04), transparent 55%),
    #0d1832;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.pp-cell--cross {
  cursor: default;
}

.pp-pipe {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
  transform: rotate(calc(var(--pp-turns, 0) * 90deg));
  transition: transform 160ms ease-out;
  will-change: transform;
  pointer-events: none;
}

.pp-pipe path {
  fill: none;
  stroke-linecap: butt;
  stroke-linejoin: round;
}

.pp-pipe__casing {
  stroke: #1f3561;
  stroke-width: 34;
}

.pp-pipe__core {
  stroke: var(--pp-idle);
  stroke-width: 16;
}

.pp-cell.is-linked {
  border-color: rgba(69, 216, 255, 0.45);
  background: #0f2244;
}

.pp-cell.is-linked .pp-pipe__casing {
  stroke: #1d5f93;
}

.pp-cell.is-linked .pp-pipe__core {
  stroke: var(--pp-link);
}

.pp-cell:hover:not([aria-disabled="true"]):not(.pp-cell--cross) {
  border-color: rgba(160, 210, 255, 0.6);
  box-shadow: 0 0 10px rgba(90, 180, 255, 0.2);
}

.pp-cell:focus-visible {
  z-index: 1;
  outline: 3px solid #ffd166;
  outline-offset: 1px;
}

.pp-board.is-cleared .pp-cell {
  cursor: default;
}

/* クリア時にスタートからゴールへ光を流す */
.pp-cell.is-flow .pp-pipe__core {
  animation: pp-flow 520ms ease-out var(--pp-flow-delay, 0ms) both;
}

.pp-cell.is-flow {
  border-color: rgba(120, 235, 255, 0.7);
}

@keyframes pp-flow {
  0% { stroke: var(--pp-link); }
  35% { stroke: #ffffff; }
  100% { stroke: #7ff0ff; }
}

/* 端点 */
.pp-port {
  position: relative;
  min-width: 0;
  min-height: 0;
}

.pp-port__stub {
  position: absolute;
  background: var(--pp-port-color);
  box-shadow: 0 0 6px var(--pp-port-color);
}

.pp-port--start { --pp-port-color: var(--pp-start); }
.pp-port--goal { --pp-port-color: var(--pp-goal); }

.pp-port--w .pp-port__stub,
.pp-port--e .pp-port__stub {
  top: 50%;
  height: 16%;
  width: calc(50% + var(--pp-gap));
  transform: translateY(-50%);
}

.pp-port--w .pp-port__stub { left: 50%; }
.pp-port--e .pp-port__stub { right: 50%; }

.pp-port--n .pp-port__stub,
.pp-port--s .pp-port__stub {
  left: 50%;
  width: 16%;
  height: calc(50% + var(--pp-gap));
  transform: translateX(-50%);
}

.pp-port--n .pp-port__stub { top: 50%; }
.pp-port--s .pp-port__stub { bottom: 50%; }

.pp-port__dot {
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  place-items: center;
  width: calc(var(--pp-edge) - 2px);
  height: calc(var(--pp-edge) - 2px);
  border: 2px solid var(--pp-port-color);
  border-radius: 50%;
  background: #0d1730;
  color: var(--pp-port-color);
  font-family: "Outfit", "Noto Sans JP", sans-serif;
  font-size: calc(var(--pp-edge) * 0.48);
  font-weight: 700;
  line-height: 1;
  transform: translate(-50%, -50%);
}

.pp-port--start .pp-port__dot {
  background: var(--pp-start);
  color: #0d1730;
  box-shadow: 0 0 8px rgba(62, 230, 160, 0.6);
}

.pp-port--goal .pp-port__stub {
  opacity: 0.55;
  box-shadow: none;
}

.pp-port--goal.is-lit .pp-port__stub {
  opacity: 1;
  box-shadow: 0 0 6px var(--pp-port-color);
}

.pp-port--goal.is-lit .pp-port__dot {
  background: var(--pp-goal);
  color: #0d1730;
  box-shadow: 0 0 10px rgba(255, 95, 168, 0.7);
  animation: pp-goal-pulse 600ms ease-out;
}

@keyframes pp-goal-pulse {
  0% { transform: translate(-50%, -50%) scale(1); }
  45% { transform: translate(-50%, -50%) scale(1.25); }
  100% { transform: translate(-50%, -50%) scale(1); }
}

.pp-legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px 16px;
  margin: 0 auto 8px;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 0.82rem;
  font-weight: 600;
}

.pp-legend__item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.pp-legend__mark {
  display: inline-grid;
  place-items: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  color: #0d1730;
  font-family: "Outfit", "Noto Sans JP", sans-serif;
  font-size: 0.68rem;
  font-weight: 700;
}

.pp-legend__mark--start { background: #3ee6a0; }
.pp-legend__mark--goal { background: #ff5fa8; }

.pp-legend__mark--link {
  width: 22px;
  height: 6px;
  border-radius: 3px;
  background: #45d8ff;
  box-shadow: 0 0 4px rgba(69, 216, 255, 0.6);
}

.pp-guide {
  max-width: min(100%, 480px);
  margin: 0 auto 14px;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 0.875rem;
  line-height: 1.6;
  text-align: center;
}

@media (max-width: 480px) {
  .option-tabs {
    gap: 8px;
  }

  .option-tab {
    min-height: 44px;
    padding: 7px 4px;
    font-size: 0.8rem;
  }

  .pp-board-wrap,
  .pp-board-wrap--7,
  .pp-board-wrap--9 {
    width: calc(100% + 20px);
    max-width: calc(100% + 20px);
    margin-inline: -10px;
  }

  .pp-board {
    --pp-edge: 15px;
    padding: 3px;
  }

  .pp-board[data-size="9"] {
    --pp-gap: 1px;
  }

  .pp-result__actions .btn {
    min-width: 0;
    flex: 1 1 calc(50% - 4px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .pp-pipe {
    transition: none;
  }

  .pp-result,
  .pp-cell.is-flow .pp-pipe__core,
  .pp-port--goal.is-lit .pp-port__dot {
    animation: none;
  }

  .pp-cell.is-flow .pp-pipe__core {
    stroke: #7ff0ff;
  }
}

/* ——— プレイ画面（/css/game-screen.css の全画面表示中・ダークテーマ） ——— */
/* 背景・戻るボタン・アイコンボタンの配色は共通テーマ（gs-theme-dark）を使い、ここでは配置と HUD だけを決める */
/* 戻る・設定・情報・盤面を中央のまとまりに収める。 */
/* 盤面は「画面の高さ − 盤面以外の高さ（--pp-chrome）」と幅に収まる正方形とし、大画面でも 560px までにとどめる */
html.gs-playing .game-panel {
  --pp-chrome: 212px;
  display: grid;
  grid-template-columns: 44px minmax(0, 506px);
  grid-template-rows: auto auto auto auto;
  grid-template-areas:
    "bar settings"
    "status status"
    "board board"
    "controls controls";
  column-gap: 10px;
  justify-content: center;
  align-content: start;
}

html.gs-playing .game-panel > .gs-bar {
  grid-area: bar;
}

html.gs-playing .pp-settings {
  grid-area: settings;
  justify-self: stretch;
  width: 100%;
  max-width: none;
  margin: 0 0 10px;
}

html.gs-playing .pp-settings .field-label {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

html.gs-playing .option-tabs {
  gap: 6px;
}

html.gs-playing .option-tab {
  flex-direction: column;
  gap: 0;
  min-height: 44px;
  padding: 4px 6px;
  border-color: var(--play-border);
  background: var(--play-hud-bg);
  color: var(--play-text);
  font-size: .8125rem;
}

html.gs-playing .option-tab small {
  font-size: .6875rem;
}

@media (hover: hover) {
  html.gs-playing .option-tab:hover {
    border-color: color-mix(in srgb, var(--play-accent) 55%, var(--play-border));
    background: var(--play-btn-hover);
  }
}

html.gs-playing .option-tab.is-active {
  border-color: var(--play-accent);
  background: color-mix(in srgb, var(--play-accent) 18%, var(--play-hud-bg));
  color: var(--play-accent);
}

html.gs-playing .option-tab:focus-visible {
  outline: 2px solid var(--play-accent);
  outline-offset: 2px;
}

html.gs-playing .pp-status,
html.gs-playing .game-panel .game-controls {
  justify-self: center;
  width: 100%;
  max-width: min(100%, 560px);
}

html.gs-playing .pp-status {
  grid-area: status;
  gap: 0;
  margin: 0 0 10px;
  padding: 6px 4px;
  border-color: var(--play-border);
  background: color-mix(in srgb, var(--play-hud-bg) 88%, transparent);
}

html.gs-playing .pp-status__item {
  padding: 2px 8px;
  border-radius: 0;
  background: none;
}

html.gs-playing .pp-status__item + .pp-status__item {
  border-left: 1px solid var(--play-border);
}

html.gs-playing .pp-status__label {
  color: var(--play-text-muted);
}

html.gs-playing .pp-status__value {
  color: var(--play-text);
}

html.gs-playing .pp-result__actions .btn--secondary {
  border: 1px solid var(--play-border);
  background: var(--play-bg);
  color: var(--play-text);
  box-shadow: none;
}

@media (hover: hover) {
  html.gs-playing .pp-result__actions .btn--secondary:hover {
    border-color: color-mix(in srgb, var(--play-accent) 55%, var(--play-border));
    background: var(--play-btn-hover);
    color: var(--play-accent);
  }
}

html.gs-playing .pp-board-wrap {
  grid-area: board;
  justify-self: center;
  width: 100%;
  max-width: none;
  margin: 0 0 10px;
  container-type: inline-size;
}

html.gs-playing .pp-stage {
  width: auto;
}

html.gs-playing .pp-board {
  --pp-board-size: min(100cqw, max(160px, min(100vh - var(--pp-chrome), 560px)));
  --pp-board-size: min(100cqw, max(160px, min(100dvh - var(--pp-chrome), 560px)));
  --pp-edge: clamp(15px, var(--pp-board-size) * .05, 28px);
  width: var(--pp-board-size);
  padding: 4px;
  border-color: var(--play-border);
  box-shadow: 0 16px 38px rgba(0, 0, 0, .45), inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

/* 凡例と操作説明はプレイ中は画面に出さない。操作説明は盤面の説明（aria-describedby）として読み上げだけに残す */
html.gs-playing .pp-legend {
  display: none;
}

html.gs-playing .pp-guide {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

html.gs-playing .game-panel .game-controls {
  grid-area: controls;
  justify-content: center;
  gap: 12px;
  margin: 0;
}

/* PCは最大640pxを基準にし、盤面は高さにも収める。 */
@media (min-width: 768px) and (min-height: 600px) {
  html.gs-playing .game-panel {
    --pp-chrome: 300px;
    grid-template-columns: 44px minmax(0, 586px);
    padding-top: max(clamp(24px, 5vh, 56px), env(safe-area-inset-top));
  }

  html.gs-playing .game-panel > .gs-bar,
  html.gs-playing .pp-settings {
    margin-bottom: 28px;
  }

  html.gs-playing .pp-status,
  html.gs-playing .pp-board-wrap,
  html.gs-playing .game-panel .game-controls {
    max-width: 640px;
  }

  html.gs-playing .pp-status,
  html.gs-playing .pp-board-wrap {
    margin-bottom: 24px;
  }
}

/* スマートフォン横向きなど高さが足りない画面では、戻る・操作・難易度・情報を左、盤面を右に並べる */
/* 操作ボタンは戻るボタンと同じ行の右端に置き、左列の高さを抑える */
@media (orientation: landscape) and (max-height: 500px) {
  html.gs-playing .game-panel {
    grid-template-columns: minmax(200px, 280px) minmax(0, 1fr);
    grid-template-rows: auto auto auto 1fr;
    grid-template-areas:
      "bar board"
      "settings board"
      "status board"
      ". board";
    column-gap: 16px;
  }

  html.gs-playing .game-panel > .gs-bar {
    justify-self: start;
  }

  html.gs-playing .pp-settings {
    justify-self: stretch;
    width: 100%;
  }

  html.gs-playing .game-panel .game-controls {
    grid-area: bar;
    justify-self: end;
    width: auto;
    margin-bottom: 10px;
  }

  html.gs-playing .pp-board-wrap {
    align-items: center;
    min-height: 0;
    margin: 0;
    container-type: size;
  }

  html.gs-playing .pp-board {
    --pp-board-size: min(100cqw, 100cqh, 560px);
  }
}