:root {
  color-scheme: dark;
  --font-display: "Keifont", "Hiragino Maru Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  --font-body: "Hiragino Sans", "Yu Gothic UI", "Yu Gothic", Meiryo, sans-serif;
  --bg: #1d1512;
  --panel: #2a201c;
  --stage-bg: #251b17;
  --line: rgba(255, 238, 220, .16);
  --text: #fff3e8;
  --muted: #c9afa2;
  --accent: #e8946f;
  --accent-strong: #d36d51;
  --dialogue-bg: #fff4e6;
  --dialogue-text: #34231d;
  --dialogue-name: #a84f3f;
  --dialogue-space: clamp(150px, 23vh, 220px);
  --stage-pad: clamp(18px, 3vh, 32px);
  --motion-bleed: clamp(16px, 3vh, 42px);
}

@font-face {
  font-family: "Keifont";
  src: url("./fonts/keifont.ttf") format("truetype");
  font-display: swap;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  overscroll-behavior: none;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  touch-action: none;
  -webkit-text-size-adjust: 100%;
  user-select: none;
}

button,
input,
select,
textarea {
  font: inherit;
}

.app-shell {
  position: relative;
  width: 100vw;
  height: 100dvh;
  overflow: hidden;
}

.stage {
  position: relative;
  display: grid;
  place-items: center;
  overflow: hidden;
  width: 100%;
  height: 100%;
  min-height: 420px;
  padding: var(--stage-pad) var(--stage-pad) var(--dialogue-space);
  background: var(--stage-bg);
}

.art-root {
  position: relative;
  display: grid;
  place-items: center;
  width: min(80vw, calc((100dvh - var(--dialogue-space) - var(--stage-pad) * 2 - var(--motion-bleed)) * .75), 680px);
  aspect-ratio: 3 / 4;
  overflow: hidden;
  isolation: isolate;
  background: #2a1d16;
  box-shadow: 0 24px 28px rgba(0, 0, 0, .42);
}

.art-root img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.art-root .art-layer {
  position: absolute;
  max-width: none;
  object-fit: fill;
  pointer-events: none;
}

.art-root .score-heart {
  position: absolute;
  z-index: 3;
  height: auto;
  object-fit: contain;
  opacity: 0;
  pointer-events: none;
  user-select: none;
}

.train-background {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  mask-size: 100% 100%;
  mask-repeat: no-repeat;
  mask-mode: alpha;
}

.train-background-plane {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  overflow: hidden;
  transform-origin: 0 0;
}

.train-background-track {
  display: flex;
  height: 100%;
  animation: train-background-scroll 20s linear infinite;
  will-change: transform;
}

.art-root .train-background-tile {
  flex: 0 0 25%;
  width: 25%;
  height: 100%;
  max-width: none;
  object-fit: fill;
}

.train-background-tile.is-mirrored { transform: scaleX(-1); }

@keyframes train-background-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.art-root .art-layer[hidden],
.dialogue[hidden] {
  display: none;
}

/* 全キャンバスを共通座標にし、顔の差分とスマホの部品を一緒に動かします。 */
.art-motion {
  position: absolute;
  inset: 0;
  pointer-events: none;
  transform-origin: 50% 100%;
}

/* 背景を含む全体は小さく揺らし、拡大で画面端の隙間を防ぎます。 */
.art-train-scene {
  transform-origin: 50% 50%;
  transform: translate(calc(var(--train-x, 0px) * .25), calc(var(--train-y, 0px) * .25))
    rotate(calc(var(--train-rotation, 0deg) * .25)) scale(1.04);
  will-change: transform;
}

/* 対象は全体の揺れに75%を加算。呼吸のtransformは子に保持します。 */
.art-train-sway {
  transform: translate(calc(var(--train-x, 0px) * .75 + var(--part-x, 0px)), calc(var(--train-y, 0px) * .75 + var(--part-y, 0px)))
    rotate(calc(var(--train-rotation, 0deg) * .75 + var(--part-rotation, 0deg)));
}

.art-train-sway--body {
  --part-x: var(--train-body-x, 0px);
  --part-y: var(--train-body-y, 0px);
  --part-rotation: var(--train-body-rotation, 0deg);
}

.art-train-sway--head {
  --part-x: var(--train-head-x, 0px);
  --part-y: var(--train-head-y, 0px);
  --part-rotation: var(--train-head-rotation, 0deg);
}

.art-train-sway--hair {
  --part-x: var(--train-hair-x, 0px);
  --part-y: var(--train-hair-y, 0px);
  --part-rotation: var(--train-hair-rotation, 0deg);
}

.art-breathing {
  animation: character-breathing 4.8s ease-in-out infinite;
}

.art-train-sway--phone {
  --part-x: var(--train-phone-x, 0px);
  --part-y: var(--train-phone-y, 0px);
  --part-rotation: var(--train-phone-rotation, 0deg);
}

/* 既存の接近演出(transform)とは別のscaleで、棒の位置に追従する拡大を重ねます。 */
.art-approach[data-approach-part="head"],
.art-approach[data-approach-part="hair"] {
  scale: var(--rod-head-scale, 1);
  transition: scale 80ms ease-out;
}

.art-approach[data-approach-part="body"] {
  scale: var(--rod-body-scale, 1);
  transition: scale 80ms ease-out;
}

.stage[data-action="approach"] .art-approach { will-change: transform; }
.dialogue[aria-busy="true"] .next-button { opacity: .4; cursor: wait; }

/* 同じ呼吸周期のまま、部位の振幅とタイミングだけを少し変えます。 */
.art-breathing--body {
  --breath-peak: scale(1.0015, 1.004);
}

.art-breathing--head {
  --breath-peak: translateY(-.05%) scale(1.0015, 1.0035);
  animation-delay: .18s;
}

.art-breathing--hair {
  --breath-peak: translateY(-.085%) rotate(.075deg) scale(1.0015, 1.0035);
  animation-delay: .42s;
}

/* スマホと指を持ち手付近で左右に振ります。電車の揺れ・呼吸とは独立して重ねます。 */
.art-breathing--phone {
  transform-origin: 20% 60%;
  animation: character-breathing 4.8s ease-in-out infinite,
    phone-wave 1.2s ease-in-out infinite;
}

@keyframes phone-wave {
  0%, 100% { rotate: 1deg; }
  50% { rotate: 5deg; }
}

@keyframes character-breathing {
  0%, 100% { transform: scale(1); }
  42% { transform: var(--breath-peak, scale(1.0015, 1.0035)); }
}

/* 蒸気は下から現れ、上昇しながら消える。透明な状態で下へ戻るので位置が飛んで見えません。 */
.art-layer[data-layer-effect="steam"][data-effect-visible="true"] {
  animation: steam-rise 4s linear infinite;
}

@keyframes steam-rise {
  0% { transform: translateY(8%); opacity: 0; }
  20% { opacity: .85; }
  65% { opacity: .45; }
  100% { transform: translateY(-12%); opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .art-approach[data-approach-part] { scale: 1; transition: none; }
  .art-layer[data-layer-effect="steam"][data-effect-visible="true"] { animation: none; }
  .train-background-track { animation: none; will-change: auto; }
  .art-breathing { animation: none; }
  .art-train-sway { transform: none; }
  .art-train-scene { transform: scale(1.04); will-change: auto; }
}

.art-placeholder {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  border: 1px solid rgba(255, 238, 220, .14);
  color: #c9afa2;
  font-family: var(--font-display);
  font-size: clamp(22px, 4vw, 42px);
}

.art-subwindow {
  position: absolute;
  z-index: 2;
  display: block;
  border: 0;
  outline: 2px solid #000;
  background: #171715;
  pointer-events: auto;
}

.dialogue {
  position: absolute;
  left: clamp(18px, 4vw, 56px);
  right: clamp(18px, 4vw, 56px);
  bottom: clamp(18px, 4vh, 40px);
  z-index: 10;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 9px 16px;
  height: 180px;
  min-height: 180px;
  max-height: 180px;
  border: 1px solid rgba(95, 54, 37, .18);
  border-radius: 8px;
  background: var(--dialogue-bg);
  box-shadow: 0 16px 46px rgba(59, 28, 19, .22), 0 1px 0 rgba(255, 255, 255, .7) inset;
  padding: 18px 18px 17px 20px;
  backface-visibility: hidden;
  transform: translateZ(0);
  pointer-events: auto;
  overflow: hidden;
}

.speaker {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--dialogue-name);
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 800;
  line-height: 1.2;
}

.line {
  margin: 0;
  min-height: 3.2em;
  color: var(--dialogue-text);
  font-family: var(--font-display);
  font-size: clamp(16px, 2.1vw, 22px);
  font-weight: 500;
  line-height: 1.75;
  white-space: pre-line;
  overflow-y: auto;
  min-height: 0;
  scrollbar-width: thin;
}

.next-button {
  align-self: end;
  display: grid;
  place-items: center;
  width: 42px;
  min-width: 42px;
  min-height: 42px;
  padding: 0;
  border: 1px solid rgba(167, 79, 63, .22);
  border-radius: 50%;
  background: #a84f3f;
  color: #fff8ef;
  box-shadow: 0 7px 18px rgba(138, 61, 48, .22);
  cursor: pointer;
  transition: background 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.next-button[hidden] {
  display: none;
}

.next-button:hover {
  border-color: transparent;
  background: #be5e4c;
  box-shadow: 0 9px 22px rgba(138, 61, 48, .3);
  transform: translateX(2px);
}

.settings-toggle {
  position: fixed;
  top: max(14px, env(safe-area-inset-top));
  right: max(14px, env(safe-area-inset-right));
  z-index: 80;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  min-height: 46px;
  padding: 0;
  border: 1px solid rgba(255, 238, 220, .16);
  border-radius: 50%;
  background: rgba(42, 32, 28, .88);
  color: var(--text);
  box-shadow: 0 14px 34px rgba(0, 0, 0, .34), 0 1px 0 rgba(255, 255, 255, .08) inset;
  cursor: pointer;
  backdrop-filter: blur(12px);
}

.settings-toggle:hover,
.settings-toggle[aria-expanded="true"] {
  border-color: rgba(232, 136, 114, .72);
  color: var(--accent);
}

.settings-panel {
  position: absolute;
  top: max(68px, calc(env(safe-area-inset-top) + 58px));
  right: max(14px, env(safe-area-inset-right));
  z-index: 79;
  width: min(324px, calc(100vw - 28px));
  max-height: calc(100dvh - max(82px, calc(env(safe-area-inset-top) + 70px)));
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
  border: 1px solid rgba(255, 238, 220, .16);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 24px 70px rgba(0, 0, 0, .42), 0 1px 0 rgba(255, 255, 255, .05) inset;
  padding: 22px;
}

.game-auto-toggle {
  position: fixed;
  top: max(18px, env(safe-area-inset-top));
  right: max(72px, calc(env(safe-area-inset-right) + 72px));
  z-index: 80;
  min-height: 38px;
  padding: 6px 14px;
  border: 1px solid rgba(255, 238, 220, .3);
  border-radius: 20px;
  background: rgba(42, 32, 28, .88);
  color: var(--text);
  cursor: pointer;
}
.game-auto-toggle[aria-pressed="true"] { color: var(--accent); border-color: var(--accent); }
.game-auto-toggle[hidden] { display: none; }

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

.settings-panel header {
  display: grid;
  gap: 5px;
  padding-bottom: 15px;
  border-bottom: 1px solid rgba(255, 238, 220, .12);
}

.settings-panel h1,
.settings-panel p {
  margin: 0;
}

.eyebrow {
  color: var(--accent);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0;
}

.settings-panel h1 {
  color: var(--text);
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
}

button,
select,
input,
textarea {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #352820;
  color: var(--text);
}

button:focus-visible,
select:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid rgba(232, 136, 114, .72);
  outline-offset: 2px;
}

.field {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 9px 12px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.field input,
.field select,
.field textarea {
  grid-column: 1 / -1;
}

.field select,
.field input {
  min-height: 42px;
  padding: 0 12px;
}

.field textarea {
  min-height: 110px;
  resize: vertical;
  padding: 12px;
}

.work-overview {
  display: grid;
  gap: 8px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 238, 220, .12);
}

.work-overview h2 {
  margin: 0;
  color: var(--accent);
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 800;
}

.work-overview p {
  margin: 0;
  color: #e7d0c0;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.85;
}

.feedback-toggle {
  justify-self: start;
  min-height: 34px;
  padding: 0 12px;
  border-color: rgba(232, 148, 111, .34);
  background: #4a2e25;
  color: #fff3e8;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}

.feedback-toggle[hidden] {
  display: none;
}

.feedback-toggle:hover,
.feedback-toggle[aria-expanded="true"] {
  border-color: rgba(232, 148, 111, .7);
  background: #5a3529;
}

.feedback-form {
  display: grid;
  gap: 10px;
  padding-top: 0;
}

.feedback-form[hidden] {
  display: none;
}

.feedback-form textarea {
  width: 100%;
  min-height: 96px;
  border-color: rgba(255, 238, 220, .14);
  background: #352820;
  color: var(--text);
  padding: 11px 12px;
  font: inherit;
  font-size: 14px;
  line-height: 1.6;
}

.feedback-form textarea::placeholder {
  color: #9f8779;
}

.feedback-submit {
  justify-self: end;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-width: 96px;
  min-height: 42px;
  padding: 0 15px;
  border-color: rgba(232, 136, 114, .38);
  background: #a84f3f;
  color: #fff8ef;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}

.feedback-submit svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.feedback-submit:disabled {
  cursor: wait;
  opacity: .58;
}

.feedback-status {
  min-height: 1.4em;
  margin: 0;
  color: #d8c1b4;
  font-size: 12px;
  line-height: 1.4;
}

.feedback-honeypot {
  position: absolute;
  left: -9999px;
}

.scene-fade {
  position: absolute;
  inset: 0;
  z-index: 30;
  display: grid;
  place-items: center;
  background: #000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 520ms ease;
}

.scene-fade.is-visible {
  opacity: 1;
}

.scene-fade-text {
  margin: 0;
  color: rgba(255, 255, 255, .9);
  font-family: var(--font-display);
  font-size: clamp(22px, 4vw, 42px);
  font-weight: 700;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 360ms ease, transform 360ms ease;
}

.scene-fade.has-caption .scene-fade-text {
  opacity: 1;
  transform: translateY(0);
}

/* 終幕では黒画面を維持したまま、最後の台詞ウインドウだけを表示します。 */
.stage[data-action="ending"] .dialogue {
  z-index: 31;
}

.loading-overlay {
  position: absolute;
  inset: 0;
  z-index: 40;
  display: grid;
  place-items: center;
  background: rgba(29, 21, 18, .82);
  color: rgba(255, 255, 255, .92);
  font-size: 14px;
  font-weight: 700;
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease;
}

.loading-overlay.is-visible {
  opacity: 1;
  pointer-events: auto;
}
.stage[data-loading="true"] .art-root,
.stage[data-loading="true"] .dialogue { visibility: hidden; }

@media (min-width: 980px) and (orientation: landscape) {
  :root {
    --side-dialogue-space: min(520px, 42vw);
    --stage-pad: 20px;
    --art-width: min(
      calc((100dvh - var(--stage-pad) * 2 - var(--motion-bleed)) * .75),
      calc(100vw - var(--side-dialogue-space) - var(--stage-pad) * 2)
    );
  }

  .stage {
    grid-template-columns: minmax(0, 1fr) var(--art-width) var(--side-dialogue-space) minmax(0, 1fr);
    grid-template-rows: 1fr;
    justify-items: stretch;
    column-gap: 0;
    padding: var(--stage-pad);
  }

  .art-root {
    grid-column: 2;
    grid-row: 1;
    justify-self: end;
    align-self: center;
    width: var(--art-width);
  }

  .dialogue {
    position: relative;
    top: auto;
    left: auto;
    right: auto;
    bottom: auto;
    grid-column: 3;
    grid-row: 1;
    align-self: end;
    justify-self: start;
    width: var(--side-dialogue-space);
    height: 280px;
    min-height: 280px;
    max-height: 280px;
    grid-template-columns: 1fr;
    border-radius: 16px 8px 8px 16px;
  }

  .dialogue::before {
    content: "";
    position: absolute;
    left: -22px;
    top: 34px;
    width: 24px;
    height: 28px;
    background: var(--dialogue-bg);
    border-left: 1px solid rgba(95, 54, 37, .16);
    border-bottom: 1px solid rgba(95, 54, 37, .16);
    clip-path: polygon(100% 0, 0 50%, 100% 100%);
  }

  .next-button {
    justify-self: end;
  }
}

@media (min-width: 980px) and (orientation: landscape) and (min-aspect-ratio: 21 / 9) {
  :root {
    --side-dialogue-space: min(480px, 32vw);
  }

  .stage {
    grid-template-columns: minmax(24px, 1fr) var(--art-width) var(--side-dialogue-space) minmax(24px, 1fr);
  }

  .dialogue {
    align-self: center;
  }
}

@media (min-width: 980px) and (orientation: landscape) and (max-height: 620px) {
  :root {
    --stage-pad: 14px;
  }

  .dialogue {
    height: 240px;
    min-height: 240px;
    max-height: 240px;
  }

  .line {
    font-size: clamp(15px, 1.6vw, 20px);
  }
}

@media (orientation: landscape) and (max-height: 520px) and (pointer: coarse) {
  .app-shell::after {
    content: "スマホでは縦画面でご覧ください";
    position: fixed;
    inset: 0;
    z-index: 999;
    display: grid;
    place-items: center;
    padding: 24px;
    background: #1d1512;
    color: #fff3e8;
    font-family: var(--font-body);
    font-size: 18px;
    font-weight: 800;
    line-height: 1.8;
    text-align: center;
    pointer-events: auto;
  }
}

@media (max-width: 760px) {
  :root {
    --dialogue-space: 190px;
    --stage-pad: 18px;
  }

  .stage {
    min-height: 58vh;
  }

  .settings-panel {
    top: max(66px, calc(env(safe-area-inset-top) + 56px));
    right: 12px;
    width: calc(100vw - 24px);
    padding: 20px;
  }

  .dialogue {
    grid-template-columns: 1fr;
    grid-template-rows: auto minmax(0, 1fr);
    height: 190px;
    min-height: 190px;
    max-height: 190px;
    border-color: rgba(95, 54, 37, .18);
    background: #fff4e6;
    padding: 15px 16px;
  }

  .line {
    font-size: 18px;
    line-height: 1.6;
  }

  .next-button {
    position: absolute;
    right: 14px;
    bottom: 14px;
    width: 40px;
    min-width: 40px;
    min-height: 40px;
  }
}