:root {
  --text-main: #f5f7fb;
  --text-muted: #d0d8e4;
  --panel-bg: rgba(11, 18, 28, 0.78);
  --panel-border: rgba(178, 211, 255, 0.3);
  --shadow-heavy: 0 20px 70px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
}

body {
  overflow: hidden;
  font-family: "Segoe UI Variable Display", "Bahnschrift", "Trebuchet MS", sans-serif;
  color: var(--text-main);
  background: radial-gradient(120% 130% at 10% 0%, #274a6a 0%, #132945 38%, #0a1220 100%);
}

.vn-root {
  --dialogue-bottom: max(0.7rem, env(safe-area-inset-bottom));
  --dialogue-min-content: clamp(8rem, 20vh, 12rem);
  --dialogue-pad-top: clamp(1rem, 2.5vw, 1.35rem);
  --dialogue-pad-bottom: clamp(0.95rem, 2.5vw, 1.15rem);
  --bg-seam-offset: clamp(38px, 5vh, 56px);
  --bg-lift: clamp(40px, 6vh, 92px);
  --bg-bottom-gap: calc(
    var(--dialogue-bottom) +
    var(--dialogue-min-content) +
    var(--dialogue-pad-top) +
    var(--dialogue-pad-bottom) +
    2px -
    var(--bg-seam-offset)
  );
  position: relative;
  width: 100%;
  height: 100%;
  cursor: pointer;
  isolation: isolate;
}

.vn-root::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: var(--bg-bottom-gap);
  pointer-events: none;
  z-index: 1;
  background:
    radial-gradient(120% 95% at 50% 100%, rgba(44, 92, 142, 0.26) 0%, rgba(12, 28, 48, 0.52) 55%, rgba(6, 13, 24, 0.78) 100%),
    linear-gradient(180deg, rgba(7, 13, 24, 0) 0%, rgba(7, 13, 24, 0.14) 34%, rgba(6, 11, 20, 0.4) 68%, rgba(5, 9, 17, 0.72) 100%);
}

.bg-layer {
  position: absolute;
  inset: 0 0 var(--bg-bottom-gap) 0;
  opacity: 0;
  background-size: cover;
  background-position: center calc(44% - var(--bg-lift));
  background-repeat: no-repeat;
  transition: opacity 760ms ease;
  filter: brightness(1.12) saturate(1.08);
}

.bg-layer.is-active {
  opacity: 1;
}

.scene-vignette {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(60% 35% at 50% 75%, rgba(6, 10, 16, 0) 0%, rgba(6, 10, 16, 0.1) 58%, rgba(6, 10, 16, 0.34) 100%),
    linear-gradient(180deg, rgba(7, 13, 24, 0.08) 0%, rgba(7, 13, 24, 0.3) 100%);
  z-index: 2;
}

.scene-vignette::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: clamp(82px, 15vh, 150px);
  background: linear-gradient(
    180deg,
    rgba(6, 10, 16, 0) 0%,
    rgba(7, 12, 21, 0.1) 42%,
    rgba(7, 12, 21, 0.26) 74%,
    rgba(6, 10, 18, 0.46) 100%
  );
}

.hud {
  position: absolute;
  z-index: 12;
  top: 1rem;
  left: 1rem;
  right: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.hud-title {
  margin: 0;
  font-size: clamp(1.05rem, 2.6vw, 1.7rem);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 700;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.hud-actions {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.back-button,
.score-badge {
  border-radius: 999px;
  border: 1px solid rgba(151, 206, 255, 0.35);
  font-size: 0.92rem;
  color: #d9efff;
  background: rgba(4, 18, 32, 0.6);
  backdrop-filter: blur(10px);
}

.back-button {
  padding: 0.44rem 0.88rem;
  cursor: pointer;
  transition: border-color 160ms ease, background 160ms ease, transform 120ms ease;
}

.back-button:hover,
.back-button:focus-visible {
  border-color: rgba(186, 229, 255, 0.82);
  background: rgba(9, 37, 63, 0.78);
  transform: translateY(-1px);
  outline: none;
}

.back-button:disabled {
  opacity: 0.42;
  cursor: not-allowed;
  transform: none;
}

.score-badge {
  padding: 0.45rem 0.8rem;
}

.character-stage {
  position: absolute;
  z-index: 4;
  inset: 0;
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  padding: 2.2rem clamp(0.6rem, 4vw, 4rem) clamp(8.5rem, 21vh, 13rem);
  pointer-events: none;
  overflow: hidden;
}

#characterSprite {
  position: relative;
  z-index: 1;
  width: auto;
  height: auto;
  max-width: min(82vw, 1040px);
  max-height: 88vh;
  object-fit: contain;
  opacity: 0;
  --char-stop-x: -23vw;
  --char-stop-y: 1.2vh;
  --char-enter-x: -48vw;
  --char-enter-y: 1.2vh;
  --char-extra-stop-x: 0vw;
  --char-extra-enter-x: 0vw;
  transform: translate3d(calc(var(--char-stop-x) + var(--char-extra-stop-x)), var(--char-stop-y), 0) scale(1);
  transition: opacity 360ms ease, transform 740ms cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform, opacity;
  filter: drop-shadow(0 18px 35px rgba(0, 0, 0, 0.45));
}

#characterSprite.is-entering {
  transform: translate3d(calc(var(--char-enter-x) + var(--char-extra-enter-x)), var(--char-enter-y), 0) scale(1.01);
}

#characterSprite.is-visible {
  opacity: 1;
  transform: translate3d(calc(var(--char-stop-x) + var(--char-extra-stop-x)), var(--char-stop-y), 0) scale(1);
}

#characterSprite.is-switching {
  transform: translate3d(calc(var(--char-stop-x) + var(--char-extra-stop-x)), var(--char-stop-y), 0) scale(1) !important;
  transition: opacity 250ms ease;
}

.choice-box {
  position: absolute;
  z-index: 10;
  left: min(3vw, 2rem);
  right: min(3vw, 2rem);
  bottom: clamp(11.8rem, 24vh, 17.2rem);
  padding: clamp(0.8rem, 2vw, 1.15rem);
  border-radius: 16px;
  border: 1px solid var(--panel-border);
  background: rgba(7, 14, 24, 0.86);
  backdrop-filter: blur(11px);
  box-shadow: var(--shadow-heavy);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity 220ms ease, transform 220ms ease;
}

.choice-box.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.choice-question {
  margin: 0 0 0.75rem;
  color: #f0f8ff;
  font-size: clamp(1rem, 2.4vw, 1.3rem);
  font-weight: 600;
}

.choice-list {
  display: grid;
  gap: 0.6rem;
}

.choice-btn {
  appearance: none;
  border: 1px solid rgba(141, 201, 255, 0.35);
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(25, 50, 78, 0.75), rgba(10, 22, 37, 0.9));
  color: var(--text-main);
  text-align: left;
  width: 100%;
  padding: 0.72rem 0.9rem;
  font: inherit;
  line-height: 1.35;
  cursor: pointer;
  transition: transform 140ms ease, border-color 140ms ease, background 140ms ease;
}

.choice-btn:hover,
.choice-btn:focus-visible {
  border-color: rgba(181, 228, 255, 0.82);
  background: linear-gradient(180deg, rgba(35, 72, 109, 0.86), rgba(12, 31, 51, 0.98));
  transform: translateY(-1px);
  outline: none;
}

.dialogue-box {
  position: absolute;
  z-index: 11;
  left: min(2.2vw, 1.55rem);
  right: min(2.2vw, 1.55rem);
  bottom: var(--dialogue-bottom);
  min-height: var(--dialogue-min-content);
  padding: var(--dialogue-pad-top) clamp(1rem, 2.7vw, 1.5rem) var(--dialogue-pad-bottom);
  border: 1px solid var(--panel-border);
  border-radius: 18px;
  background: var(--panel-bg);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-heavy);
}

.nameplate {
  position: absolute;
  left: 1rem;
  top: -1.1rem;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  border: 1px solid rgba(131, 202, 255, 0.7);
  background: linear-gradient(135deg, #0f70a3, #0b4f82);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.nameplate.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.dialogue-text {
  margin: 0;
  padding-top: 0.3rem;
  min-height: 4.6em;
  color: var(--text-main);
  font-size: clamp(1rem, 2.35vw, 1.26rem);
  line-height: 1.55;
  white-space: pre-wrap;
}

@media (max-width: 900px), (pointer: coarse) and (max-width: 1200px) {
  .vn-root {
    --dialogue-bottom: max(0.35rem, env(safe-area-inset-bottom));
    --dialogue-min-content: clamp(10.3rem, 31vh, 13.2rem);
    --dialogue-pad-top: 0.92rem;
    --dialogue-pad-bottom: 0.84rem;
    --bg-seam-offset: 0px;
    --bg-lift: clamp(22px, 4vh, 58px);
  }

  .hud {
    top: max(0.55rem, env(safe-area-inset-top));
    left: max(0.55rem, env(safe-area-inset-left));
    right: max(0.55rem, env(safe-area-inset-right));
  }

  .hud-title {
    font-size: clamp(0.95rem, 5vw, 1.22rem);
    letter-spacing: 0.05em;
  }

  .back-button,
  .score-badge {
    font-size: 0.81rem;
    padding: 0.38rem 0.72rem;
  }

  .character-stage {
    padding: 2.8rem 0.2rem clamp(7.8rem, 25vh, 12.2rem);
  }

  #characterSprite {
    max-width: 156vw;
    max-height: 96svh;
    --char-stop-x: -44vw;
    --char-stop-y: 6.2vh;
    --char-enter-x: -82vw;
    --char-enter-y: 6.2vh;
    -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 78%, rgba(0, 0, 0, 0.62) 88%, transparent 100%);
    mask-image: linear-gradient(to bottom, #000 0%, #000 78%, rgba(0, 0, 0, 0.62) 88%, transparent 100%);
    -webkit-mask-size: 100% 100%;
    mask-size: 100% 100%;
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
  }

  #characterSprite.is-entering {
    transform: translate3d(calc(var(--char-enter-x) + var(--char-extra-enter-x)), var(--char-enter-y), 0) scale(1.01);
  }

  .choice-box {
    left: max(0.55rem, env(safe-area-inset-left));
    right: max(0.55rem, env(safe-area-inset-right));
    bottom: clamp(12rem, 35vh, 18rem);
    border-radius: 13px;
  }

  .choice-question {
    font-size: clamp(1rem, 4.8vw, 1.13rem);
  }

  .choice-btn {
    font-size: clamp(0.95rem, 4.2vw, 1.02rem);
    padding: 0.68rem 0.8rem;
  }

  .dialogue-box {
    left: max(0.4rem, env(safe-area-inset-left));
    right: max(0.4rem, env(safe-area-inset-right));
    border-radius: 12px;
    padding-right: 0.86rem;
    padding-left: 0.86rem;
  }

  .nameplate {
    left: 0.72rem;
    top: -0.9rem;
    font-size: 0.78rem;
    padding: 0.25rem 0.66rem;
  }

  .dialogue-text {
    min-height: 4.95em;
    font-size: clamp(1rem, 4.25vw, 1.1rem);
    line-height: 1.47;
  }
}

@media (max-height: 540px) and (orientation: landscape) {
  .vn-root {
    --dialogue-min-content: 6.8rem;
    --dialogue-pad-top: 0.85rem;
    --bg-seam-offset: clamp(14px, 2.4vh, 22px);
    --bg-lift: clamp(10px, 2.6vh, 24px);
  }

  .character-stage {
    padding-bottom: 8.2rem;
  }

  #characterSprite {
    max-height: 92vh;
    max-width: min(78vw, 980px);
    --char-stop-x: -17vw;
    --char-stop-y: 1vh;
    --char-enter-x: -42vw;
    --char-enter-y: 1vh;
    -webkit-mask-image: none;
    mask-image: none;
  }

  #characterSprite.is-entering {
    transform: translate3d(calc(var(--char-enter-x) + var(--char-extra-enter-x)), var(--char-enter-y), 0) scale(1.01);
  }

  .choice-box {
    bottom: 8.8rem;
    padding: 0.7rem;
  }

  .dialogue-box {
    padding-top: var(--dialogue-pad-top);
  }

  .dialogue-text {
    min-height: 3.25em;
    font-size: 0.95rem;
  }
}

@media (orientation: portrait) {
  .bg-layer {
    background-position: center calc(41% - var(--bg-lift));
  }

  .scene-vignette {
    background:
      radial-gradient(68% 39% at 50% 72%, rgba(6, 10, 16, 0) 0%, rgba(6, 10, 16, 0.12) 58%, rgba(6, 10, 16, 0.38) 100%),
      linear-gradient(180deg, rgba(7, 13, 24, 0.1) 0%, rgba(7, 13, 24, 0.34) 100%);
  }

  .scene-vignette::after {
    height: clamp(96px, 19vh, 180px);
  }
}

@media (max-width: 900px) and (orientation: portrait), (pointer: coarse) and (max-width: 1200px) and (orientation: portrait) {
  #characterSprite {
    max-width: 168vw;
    max-height: 96svh;
    --char-stop-x: -48vw;
    --char-stop-y: 6.4vh;
    --char-enter-x: -88vw;
    --char-enter-y: 6.4vh;
  }
}