:root {
  --vn-black: #070709;
  --vn-ink: #f4efe4;
  --vn-muted: #aaa397;
  --vn-gold: #c6a45a;
  --vn-red: #8e2632;
  --vn-cyan: #7ebfc0;
  --vn-line: rgba(244, 239, 228, 0.22);
  --vn-serif: "Shippori Mincho B1", "Yu Mincho", serif;
  --vn-sans: "Zen Kaku Gothic New", "Yu Gothic", sans-serif;
}

html,
body {
  width: 100%;
  min-width: 0;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--vn-black);
}

body.manzokukyo-novel {
  color: var(--vn-ink);
  font-family: var(--vn-sans);
}

.vn-shell,
.vn-shell * {
  box-sizing: border-box;
}

.vn-shell {
  position: relative;
  width: 100%;
  height: 100dvh;
  min-height: 560px;
  overflow: hidden;
  isolation: isolate;
  background: #09090b;
  color: var(--vn-ink);
}

.vn-stage,
.vn-backdrop,
.vn-backdrop img,
.vn-stage-shade,
.vn-stage-grain {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.vn-stage {
  z-index: -3;
  overflow: hidden;
  background: #09090b;
}

.vn-backdrop {
  opacity: 0;
  transition: opacity 680ms ease;
}

.vn-backdrop.is-active {
  opacity: 1;
}

.vn-backdrop {
  object-fit: cover;
  object-position: center;
  filter: saturate(0.86) contrast(1.06) brightness(0.94);
  scale: 1.015;
}

.vn-shell[data-scene-kind="key"] .vn-backdrop {
  object-position: center 18%;
}

.vn-shell[data-scene-kind="altar"] .vn-backdrop {
  object-position: center bottom;
  filter: saturate(0.82) contrast(1.08) brightness(0.88);
}

.vn-shell[data-scene-kind="corridor"] .vn-backdrop,
.vn-shell[data-scene-kind="door"] .vn-backdrop {
  object-position: center;
  filter: saturate(0.76) contrast(1.12) brightness(0.82);
}

.vn-stage-shade {
  z-index: 2;
  background:
    linear-gradient(90deg, rgba(3, 3, 5, 0.48), rgba(3, 3, 5, 0.03) 48%, rgba(3, 3, 5, 0.2)),
    linear-gradient(180deg, rgba(3, 3, 5, 0.26), transparent 34%, rgba(3, 3, 5, 0.68) 100%);
}

.vn-stage-grain {
  z-index: 3;
  opacity: 0.16;
  pointer-events: none;
  background:
    repeating-linear-gradient(0deg, transparent 0 3px, rgba(255, 255, 255, 0.08) 3px 4px),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.025) 0 1px, transparent 1px 5px);
  mix-blend-mode: overlay;
}

.vn-stage-grain::after {
  position: absolute;
  inset: 0;
  content: "";
  border: 1px solid rgba(198, 164, 90, 0.24);
  box-shadow: inset 0 0 90px rgba(0, 0, 0, 0.54);
}

.vn-topbar {
  position: absolute;
  inset: 0 0 auto;
  z-index: 30;
  display: grid;
  min-height: 58px;
  grid-template-columns: minmax(210px, 1fr) auto;
  align-items: stretch;
  border-bottom: 1px solid rgba(198, 164, 90, 0.34);
  background: rgba(6, 6, 8, 0.82);
  backdrop-filter: blur(14px);
}

.vn-brand {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 18px;
  padding: 8px clamp(18px, 3vw, 46px);
  color: inherit;
  text-decoration: none;
}

.vn-brand::before {
  width: 32px;
  height: 1px;
  flex: 0 0 auto;
  background: var(--vn-gold);
  content: "";
}

.vn-brand strong,
.vn-brand small {
  display: block;
  letter-spacing: 0;
}

.vn-brand strong {
  font: 700 1rem / 1.2 var(--vn-serif);
}

.vn-brand small {
  margin-top: 2px;
  color: var(--vn-muted);
  font-size: 0.58rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.vn-tools {
  display: flex;
  align-items: stretch;
  border-left: 1px solid var(--vn-line);
}

.vn-tools button {
  min-width: 64px;
  border: 0;
  border-right: 1px solid var(--vn-line);
  padding: 8px 11px;
  background: transparent;
  color: rgba(244, 239, 228, 0.68);
  font: 900 0.62rem / 1 var(--vn-sans);
  letter-spacing: 0.1em;
  cursor: pointer;
}

.vn-tools button:hover,
.vn-tools button:focus-visible,
.vn-tools button[aria-pressed="true"] {
  outline: none;
  background: rgba(198, 164, 90, 0.14);
  color: #fff;
}

.vn-chapter {
  position: absolute;
  top: 92px;
  left: clamp(28px, 5vw, 78px);
  z-index: 8;
  display: grid;
  gap: 8px;
  max-width: min(420px, calc(100% - 56px));
  text-shadow: 0 3px 18px #000;
}

.vn-chapter span {
  color: var(--vn-gold);
  font-size: 0.64rem;
  font-weight: 900;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.vn-chapter strong {
  color: rgba(244, 239, 228, 0.86);
  font: 600 1.05rem / 1.5 var(--vn-serif);
  letter-spacing: 0;
}

.vn-dialogue {
  position: absolute;
  right: clamp(24px, 4vw, 64px);
  bottom: clamp(24px, 4vh, 46px);
  left: clamp(24px, 4vw, 64px);
  z-index: 20;
  min-height: 214px;
  border: 1px solid rgba(198, 164, 90, 0.58);
  border-left-width: 4px;
  padding: 48px clamp(58px, 6vw, 92px) 36px;
  background: rgba(5, 5, 7, 0.88);
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.52);
  backdrop-filter: blur(18px);
  cursor: pointer;
}

.vn-dialogue::before,
.vn-dialogue::after {
  position: absolute;
  pointer-events: none;
  content: "";
}

.vn-dialogue::before {
  inset: 9px;
  border: 1px solid rgba(244, 239, 228, 0.08);
}

.vn-dialogue::after {
  top: 0;
  right: 0;
  width: 34%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--vn-cyan));
}

.vn-speaker {
  position: absolute;
  top: 0;
  left: 42px;
  min-width: 180px;
  border-right: 1px solid rgba(198, 164, 90, 0.5);
  border-bottom: 1px solid rgba(198, 164, 90, 0.5);
  padding: 10px 22px 11px;
  background: #111014;
  color: var(--vn-gold);
  font: 700 0.88rem / 1 var(--vn-serif);
  letter-spacing: 0.08em;
}

.vn-text {
  max-width: 68em;
  min-height: 3.7em;
  margin: 0;
  color: rgba(255, 253, 247, 0.94);
  font: 600 1.14rem / 2 var(--vn-serif);
  letter-spacing: 0;
}

.vn-text::after {
  display: inline-block;
  width: 0.5em;
  height: 1em;
  margin-left: 0.15em;
  border-right: 1px solid rgba(244, 239, 228, 0.72);
  vertical-align: -0.1em;
  content: "";
  animation: vn-caret 0.8s steps(1, end) infinite;
}

.vn-dialogue.is-complete .vn-text::after {
  display: none;
}

.vn-next {
  position: absolute;
  right: 24px;
  bottom: 20px;
  display: grid;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(198, 164, 90, 0.5);
  padding: 0;
  place-items: center;
  background: rgba(198, 164, 90, 0.1);
  color: var(--vn-gold);
  cursor: pointer;
  opacity: 0;
  transition: opacity 180ms ease;
}

.vn-next::before {
  width: 8px;
  height: 8px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  content: "";
  rotate: 45deg;
  translate: 0 -2px;
}

.vn-dialogue.is-complete .vn-next {
  opacity: 1;
  animation: vn-next 1.2s ease-in-out infinite;
}

.vn-line-meta {
  position: absolute;
  right: 72px;
  bottom: 27px;
  color: rgba(244, 239, 228, 0.38);
  font-size: 0.56rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.vn-choices {
  position: absolute;
  top: 50%;
  right: clamp(34px, 7vw, 110px);
  z-index: 24;
  display: grid;
  width: min(520px, calc(100% - 68px));
  gap: 9px;
  opacity: 0;
  pointer-events: none;
  translate: 0 -44%;
  transition: opacity 260ms ease, translate 300ms ease;
}

.vn-choices.is-visible {
  opacity: 1;
  pointer-events: auto;
  translate: 0 -50%;
}

.vn-choice {
  position: relative;
  min-height: 58px;
  border: 0;
  border-top: 1px solid rgba(198, 164, 90, 0.54);
  border-bottom: 1px solid rgba(198, 164, 90, 0.24);
  padding: 14px 54px 14px 22px;
  overflow: hidden;
  background: rgba(6, 6, 8, 0.86);
  color: rgba(244, 239, 228, 0.88);
  font: 700 0.96rem / 1.5 var(--vn-serif);
  letter-spacing: 0;
  text-align: left;
  cursor: pointer;
  backdrop-filter: blur(14px);
}

.vn-choice::after {
  position: absolute;
  top: 50%;
  right: 22px;
  width: 7px;
  height: 7px;
  border-top: 1px solid var(--vn-gold);
  border-right: 1px solid var(--vn-gold);
  content: "";
  rotate: 45deg;
  translate: 0 -50%;
}

.vn-choice:hover,
.vn-choice:focus-visible {
  outline: none;
  background: rgba(142, 38, 50, 0.82);
  color: #fff;
}

.vn-title-screen {
  position: absolute;
  inset: 0;
  z-index: 50;
  display: grid;
  align-content: center;
  padding: 8vh clamp(26px, 8vw, 130px);
  background: rgba(3, 3, 5, 0.28);
  transition: opacity 600ms ease, visibility 600ms;
}

.vn-title-screen.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.vn-title-copy {
  width: min(720px, 100%);
  text-shadow: 0 8px 34px #000;
}

.vn-title-copy > span {
  display: block;
  margin-bottom: 18px;
  color: var(--vn-gold);
  font-size: 0.66rem;
  font-weight: 900;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.vn-title-copy h1 {
  margin: 0;
  color: #fffdf5;
  font: 700 5.6rem / 0.95 var(--vn-serif);
  letter-spacing: 0;
}

.vn-title-copy h1 small {
  display: block;
  margin-top: 16px;
  color: rgba(244, 239, 228, 0.72);
  font: 600 1.05rem / 1.4 var(--vn-serif);
  letter-spacing: 0.16em;
}

.vn-title-rule {
  width: min(480px, 80%);
  height: 1px;
  margin: 30px 0;
  background: linear-gradient(90deg, var(--vn-gold), transparent);
}

.vn-title-copy p {
  max-width: 34em;
  margin: 0;
  color: rgba(244, 239, 228, 0.72);
  font: 600 0.94rem / 1.9 var(--vn-serif);
}

.vn-title-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 34px;
}

.vn-title-actions button,
.vn-panel-actions button,
.vn-panel-actions a {
  min-width: 180px;
  border: 1px solid rgba(198, 164, 90, 0.58);
  border-radius: 0;
  padding: 13px 22px;
  background: rgba(7, 7, 9, 0.72);
  color: var(--vn-ink);
  font: 900 0.72rem / 1 var(--vn-sans);
  letter-spacing: 0.12em;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}

.vn-title-actions button:hover,
.vn-title-actions button:focus-visible,
.vn-panel-actions button:hover,
.vn-panel-actions button:focus-visible,
.vn-panel-actions a:hover,
.vn-panel-actions a:focus-visible {
  outline: none;
  border-color: var(--vn-gold);
  background: var(--vn-gold);
  color: #08070a;
}

.vn-panel {
  position: absolute;
  inset: 0;
  z-index: 70;
  display: grid;
  padding: clamp(22px, 5vw, 76px);
  place-items: center;
  background: rgba(4, 4, 6, 0.9);
  opacity: 0;
  visibility: hidden;
  transition: opacity 220ms ease, visibility 220ms;
  backdrop-filter: blur(18px);
}

.vn-panel.is-open {
  opacity: 1;
  visibility: visible;
}

.vn-panel-window {
  width: min(880px, 100%);
  max-height: min(720px, calc(100dvh - 60px));
  border-top: 2px solid var(--vn-gold);
  border-bottom: 1px solid rgba(198, 164, 90, 0.4);
  padding: 28px clamp(20px, 4vw, 48px) 32px;
  overflow: auto;
  background: rgba(12, 11, 14, 0.96);
  box-shadow: 0 30px 100px rgba(0, 0, 0, 0.72);
}

.vn-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--vn-line);
  padding-bottom: 15px;
}

.vn-panel-head h2 {
  margin: 0;
  font: 700 1.35rem / 1 var(--vn-serif);
  letter-spacing: 0.08em;
}

.vn-panel-close {
  display: grid;
  width: 36px;
  height: 36px;
  border: 1px solid var(--vn-line);
  padding: 0;
  place-items: center;
  background: transparent;
  color: var(--vn-ink);
  font-size: 1.2rem;
  cursor: pointer;
}

.vn-log {
  display: grid;
  gap: 18px;
}

.vn-log-entry {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 24px;
  border-bottom: 1px solid rgba(244, 239, 228, 0.1);
  padding-bottom: 16px;
}

.vn-log-entry strong {
  color: var(--vn-gold);
  font: 700 0.78rem / 1.6 var(--vn-serif);
}

.vn-log-entry p {
  margin: 0;
  color: rgba(244, 239, 228, 0.78);
  font: 600 0.9rem / 1.8 var(--vn-serif);
}

.vn-config {
  display: grid;
  gap: 24px;
}

.vn-config-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  align-items: center;
  gap: 24px;
  border-bottom: 1px solid rgba(244, 239, 228, 0.1);
  padding-bottom: 20px;
}

.vn-config-row > span {
  color: var(--vn-muted);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.vn-config-row input[type="range"] {
  width: 100%;
  accent-color: var(--vn-gold);
}

.vn-speed {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.vn-speed button {
  min-height: 40px;
  border: 1px solid var(--vn-line);
  border-radius: 0;
  background: transparent;
  color: var(--vn-muted);
  font: 900 0.68rem / 1 var(--vn-sans);
  cursor: pointer;
}

.vn-speed button[aria-pressed="true"] {
  border-color: var(--vn-gold);
  background: rgba(198, 164, 90, 0.16);
  color: #fff;
}

.vn-panel-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.vn-toast {
  position: absolute;
  top: 76px;
  right: 18px;
  z-index: 100;
  border-left: 3px solid var(--vn-gold);
  padding: 11px 16px;
  background: rgba(7, 7, 9, 0.9);
  color: var(--vn-ink);
  font-size: 0.72rem;
  font-weight: 900;
  opacity: 0;
  pointer-events: none;
  translate: 12px 0;
  transition: opacity 180ms ease, translate 180ms ease;
}

.vn-toast.is-visible {
  opacity: 1;
  translate: 0;
}

.vn-shell[data-game-state="title"] .vn-topbar,
.vn-shell[data-game-state="title"] .vn-chapter,
.vn-shell[data-game-state="title"] .vn-dialogue,
.vn-shell[data-game-state="title"] .vn-choices {
  opacity: 0;
  pointer-events: none;
}

.vn-shell.is-transitioning .vn-stage::after {
  position: absolute;
  inset: 0;
  z-index: 10;
  background: #000;
  content: "";
  animation: vn-scene-cut 720ms ease both;
}

@keyframes vn-caret {
  50% { opacity: 0; }
}

@keyframes vn-next {
  50% { translate: 0 4px; }
}

@keyframes vn-scene-cut {
  0%, 100% { opacity: 0; }
  42%, 58% { opacity: 1; }
}

@media (max-width: 820px) {
  .vn-shell {
    min-height: 480px;
  }

  .vn-topbar {
    min-height: 46px;
    grid-template-columns: 100px minmax(0, 1fr);
  }

  .vn-brand {
    gap: 0;
    padding: 6px 8px;
  }

  .vn-brand::before {
    display: none;
  }

  .vn-brand strong {
    font-size: 0.66rem;
  }

  .vn-brand small {
    display: none;
  }

  .vn-tools {
    max-width: none;
    overflow: visible;
    scrollbar-width: none;
  }

  .vn-tools::-webkit-scrollbar {
    display: none;
  }

  .vn-tools button {
    min-width: 0;
    flex: 1 1 0;
    padding: 6px 3px;
    font-size: 0.46rem;
    letter-spacing: 0.03em;
  }

  .vn-chapter {
    top: 64px;
    left: 16px;
    gap: 4px;
    max-width: calc(100% - 32px);
  }

  .vn-chapter span {
    font-size: 0.52rem;
  }

  .vn-chapter strong {
    font-size: 0.78rem;
  }

  .vn-dialogue {
    right: 0;
    bottom: 0;
    left: 0;
    min-height: 0;
    height: clamp(220px, 34dvh, 280px);
    border-right: 0;
    border-bottom: 0;
    border-left-width: 3px;
    padding: 43px 42px 24px 24px;
    box-shadow: 0 -24px 70px rgba(0, 0, 0, 0.56);
  }

  .vn-speaker {
    left: 20px;
    min-width: 130px;
    padding: 9px 15px 10px;
    font-size: 0.72rem;
  }

  .vn-text {
    min-height: 4.8em;
    font-size: 0.9rem;
    line-height: 1.85;
  }

  .vn-next {
    right: 12px;
    bottom: 12px;
    width: 30px;
    height: 30px;
  }

  .vn-line-meta {
    right: 48px;
    bottom: 18px;
    font-size: 0.48rem;
  }

  .vn-choices {
    top: auto;
    right: 14px;
    bottom: calc(clamp(220px, 34dvh, 280px) + 14px);
    width: calc(100% - 28px);
    gap: 6px;
    translate: 0 12px;
  }

  .vn-choices.is-visible {
    translate: 0;
  }

  .vn-choice {
    min-height: 46px;
    padding: 10px 44px 10px 16px;
    font-size: 0.78rem;
    line-height: 1.4;
  }

  .vn-title-screen {
    align-content: end;
    padding: 84px 24px 44px;
    background: rgba(3, 3, 5, 0.22);
  }

  .vn-title-copy h1 {
    font-size: 3.6rem;
  }

  .vn-title-copy h1 small {
    margin-top: 10px;
    font-size: 0.8rem;
  }

  .vn-title-rule {
    margin: 20px 0;
  }

  .vn-title-copy p {
    font-size: 0.78rem;
    line-height: 1.7;
  }

  .vn-title-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    margin-top: 22px;
  }

  .vn-title-actions button {
    min-width: 0;
    padding: 12px 8px;
    font-size: 0.62rem;
  }

  .vn-panel {
    padding: 12px;
  }

  .vn-panel-window {
    max-height: calc(100dvh - 24px);
    padding: 20px 16px 24px;
  }

  .vn-log-entry,
  .vn-config-row {
    grid-template-columns: 1fr;
    gap: 7px;
  }

  .vn-panel-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .vn-panel-actions button,
  .vn-panel-actions a {
    min-width: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .vn-backdrop,
  .vn-title-screen,
  .vn-panel,
  .vn-next,
  .vn-toast {
    transition: none;
  }

  .vn-stage-grain,
  .vn-text::after,
  .vn-dialogue.is-complete .vn-next,
  .vn-shell.is-transitioning .vn-stage::after {
    animation: none;
  }
}