:root {
  --ink: #14110d;
  --paper: #e4d6b8;
  --silk: #e0b44a;
  --amber: #c56a28;
  --moss: #3d4a30;
  --wood: #5a3b28;
  --dusk: #6b4a32;
  --viscid: #f3e4b4;
  --hair: 1px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  font-family: 'DotGothic16', monospace;
  font-weight: 400;
  -webkit-font-smoothing: none;
  image-rendering: pixelated;
}

::selection {
  background: var(--wood);
  color: var(--paper);
}

#app {
  position: relative;
  width: 100%;
  height: 100%;
}

#c {
  display: block;
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

#hud {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
}

/* —— title card: a mounted washi print that dissolves —— */

.title {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  overflow: hidden;
  opacity: 1;
  transition: opacity 1.85s ease;
}

.title.is-leaving {
  opacity: 0;
  transition: opacity 1.85s cubic-bezier(0.22, 0.12, 0.18, 1);
}

.title.is-hidden {
  visibility: hidden;
}

.title-wash {
  image-rendering: pixelated;
  position: absolute;
  inset: 0;
  background-color: #fff0b4;
  background-image:
    linear-gradient(#ffe08a 50%, transparent 50%),
    linear-gradient(90deg, #ffe08a 50%, transparent 50%);
  background-size: 16px 16px;
}

.title-wash::after {
  content: '';
  position: absolute;
  inset: 0;
  box-shadow:
    inset 0 0 18vh 7vh color-mix(in srgb, var(--ink) 22%, transparent),
    inset 0 0 0 1.2px color-mix(in srgb, var(--wood) 16%, transparent);
  pointer-events: none;
}

.title-foxing {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(18% 14% at 12% 18%, color-mix(in srgb, var(--amber) 16%, transparent), transparent 70%),
    radial-gradient(22% 16% at 88% 78%, color-mix(in srgb, var(--dusk) 18%, transparent), transparent 72%),
    radial-gradient(12% 10% at 74% 14%, color-mix(in srgb, var(--wood) 12%, transparent), transparent 70%),
    radial-gradient(9% 8% at 22% 84%, color-mix(in srgb, var(--moss) 10%, transparent), transparent 70%);
}

.title-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 8vw;
}

.title-jp::before {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 100%;
  width: var(--hair);
  height: 11vh;
  margin-bottom: 1.6rem;
  transform: translateX(-50%);
  background: linear-gradient(
    to bottom,
    transparent,
    color-mix(in srgb, var(--silk) 55%, var(--amber)) 88%,
    color-mix(in srgb, var(--silk) 20%, transparent)
  );
  opacity: 0.42;
}

.title-latin {
  margin: 0 0 1.15rem;
  padding-left: 0.2em;
  font-family: 'Press Start 2P', monospace;
  font-weight: 400;
  font-size: 0.58rem;
  letter-spacing: 0.36em;
  color: var(--silk);
  opacity: 1;
  text-shadow: 3px 3px 0 #1a1030;
}

.title-jp {
  position: relative;
  margin: 0 -0.2em 0 0;
  font-family: 'DotGothic16', monospace;
  font-weight: 400;
  font-size: clamp(3.4rem, 12vw, 7rem);
  line-height: 1;
  letter-spacing: 0.1em;
  color: var(--silk);
  text-shadow:
    4px 0 0 #1a1030,
    -4px 0 0 #1a1030,
    0 4px 0 #1a1030,
    0 -4px 0 #1a1030,
    5px 5px 0 #c46a3a;
}

.title-season {
  position: absolute;
  top: 50%;
  right: max(5.5vw, calc(50% - 22rem));
  transform: translateY(-52%);
  margin: 0;
  writing-mode: vertical-rl;
  font-family: 'DotGothic16', monospace;
  font-weight: 400;
  font-size: 0.78rem;
  letter-spacing: 0.28em;
  color: var(--dusk);
  opacity: 0.62;
}

.title-prompt {
  position: absolute;
  left: 0;
  right: 0;
  bottom: max(8vh, 3.2rem);
  margin: 0;
  text-align: center;
  font-family: 'DotGothic16', monospace;
  font-weight: 400;
  font-size: 0.95rem;
  letter-spacing: 0.28em;
  padding-left: 0.28em;
  color: var(--amber);
}

.title-prompt::before {
  content: '';
  display: block;
  width: 2.4rem;
  height: var(--hair);
  margin: 0 auto 1.15rem;
  background: color-mix(in srgb, var(--wood) 55%, var(--amber));
  opacity: 0.55;
}

.title.is-leaving .title-wash,
.title.is-leaving .title-foxing {
  transition: opacity 1.15s ease;
  opacity: 0.15;
}

.title.is-leaving .title-jp {
  transition: opacity 1.55s 0.2s ease, letter-spacing 1.8s ease;
  letter-spacing: 0.34em;
}

/* —— in-play: a caption that forgot it was a HUD —— */

.play {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.35s 0.45s ease;
}

#hud:not(.is-title) .play {
  opacity: 1;
}

.reticle {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 9px;
  height: 9px;
  transform: translate(-50%, -50%);
}

.reticle::before,
.reticle::after {
  content: '';
  position: absolute;
  background: color-mix(in srgb, var(--paper) 70%, var(--silk));
  opacity: 0.38;
}

.reticle::before {
  left: 0;
  top: 50%;
  width: 100%;
  height: var(--hair);
  transform: translateY(-50%);
}

.reticle::after {
  top: 0;
  left: 50%;
  height: 100%;
  width: var(--hair);
  transform: translateX(-50%);
}

.reticle-dew {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 2px;
  height: 2px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  background: var(--viscid);
  opacity: 0.55;
  box-shadow: 0 0 0.6px color-mix(in srgb, var(--silk) 40%, transparent);
}

.silk-tell {
  position: absolute;
  top: 4.6vh;
  left: 3.4vw;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.68rem;
  letter-spacing: 0.28em;
  color: color-mix(in srgb, var(--paper) 72%, var(--silk));
  opacity: 0.42;
}

.silk-tell i {
  display: block;
  width: 0.85rem;
  height: var(--hair);
  background: var(--silk);
  opacity: 0.7;
}

.silk-tell[data-mode='sticky'] {
  color: color-mix(in srgb, var(--viscid) 70%, var(--amber));
  opacity: 0.5;
}

.silk-tell[data-mode='sticky'] i {
  width: 0.85rem;
  height: 3px;
  background:
    radial-gradient(circle, var(--viscid) 0 1.1px, transparent 1.2px) 0 50% / 3px 3px no-repeat,
    radial-gradient(circle, var(--viscid) 0 1.1px, transparent 1.2px) 100% 50% / 3px 3px no-repeat,
    linear-gradient(var(--silk), var(--silk)) 0 50% / 100% 1px no-repeat;
  opacity: 0.85;
}

.prey {
  position: absolute;
  left: 3.4vw;
  bottom: 4.4vh;
  display: flex;
  align-items: baseline;
  gap: 0.42rem;
  font-family: 'Shippori Mincho', serif;
  font-size: 0.82rem;
  color: color-mix(in srgb, var(--silk) 80%, var(--paper));
  opacity: 0.4;
}

.tally {
  letter-spacing: 0.08em;
}

.tally-more {
  opacity: 0.55;
  font-size: 0.7rem;
}

.surface {
  position: absolute;
  right: 3.6vw;
  bottom: 4.4vh;
  font-family: 'Shippori Mincho', serif;
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  color: color-mix(in srgb, var(--paper) 55%, var(--moss));
  opacity: 0.22;
}

.surface.is-new {
  animation: surface-in 2.8s ease forwards;
}

.help {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 7.2vh;
  text-align: center;
  font-family: 'IBM Plex Sans JP', sans-serif;
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  color: color-mix(in srgb, var(--paper) 55%, var(--silk));
  opacity: 0;
  transition: opacity 1.8s 2.4s ease;
}

#hud:not(.is-title) .help {
  opacity: 0.28;
}

#hud.is-locked .help {
  opacity: 0.16;
}

.lock-hint {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 11vh;
  text-align: center;
}

.lock-hint span {
  display: inline-block;
  font-family: 'Shippori Mincho', serif;
  font-size: 0.78rem;
  letter-spacing: 0.38em;
  padding-left: 0.38em;
  color: var(--paper);
  opacity: 0.38;
}

.lock-hint span::before {
  content: '';
  display: block;
  width: 1.6rem;
  height: var(--hair);
  margin: 0 auto 0.85rem;
  background: color-mix(in srgb, var(--paper) 40%, var(--silk));
  opacity: 0.45;
}

#hud.is-title .lock-hint,
#hud.is-locked .lock-hint,
.lock-hint[hidden] {
  opacity: 0;
}

.wrap-ring {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 18px;
  height: 18px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  opacity: 0;
  background: conic-gradient(
    from -90deg,
    color-mix(in srgb, var(--silk) 65%, transparent) calc(var(--t, 0) * 360deg),
    transparent 0
  );
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 1px), #000 calc(100% - 1px));
  mask: radial-gradient(farthest-side, transparent calc(100% - 1px), #000 calc(100% - 1px));
}

#hud.is-wrapping .wrap-ring {
  opacity: 0.36;
}

/* —— vibration: a tug felt at the frame, not a meter —— */

.vib-amb,
.vib-flash {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.vib-amb {
  opacity: calc(var(--amb, 0) * 0.28);
  background:
    linear-gradient(to right, color-mix(in srgb, var(--silk) 22%, transparent), transparent 14%),
    linear-gradient(to left, color-mix(in srgb, var(--silk) 22%, transparent), transparent 14%),
    linear-gradient(to bottom, color-mix(in srgb, var(--silk) 14%, transparent), transparent 12%),
    linear-gradient(to top, color-mix(in srgb, var(--silk) 16%, transparent), transparent 12%);
  transition: opacity 0.28s linear;
}

.vib-flash {
  --vx: 50%;
  --vy: 0%;
  --str: 0.4;
  opacity: 0;
  background: radial-gradient(
    38% 30% at var(--vx) var(--vy),
    color-mix(in srgb, var(--silk) calc(var(--str) * 42%), transparent),
    transparent 72%
  );
}

.vib-flash.is-omni {
  background:
    linear-gradient(to right, color-mix(in srgb, var(--silk) calc(var(--str) * 36%), transparent), transparent 16%),
    linear-gradient(to left, color-mix(in srgb, var(--silk) calc(var(--str) * 36%), transparent), transparent 16%),
    linear-gradient(to bottom, color-mix(in srgb, var(--silk) calc(var(--str) * 22%), transparent), transparent 14%),
    linear-gradient(to top, color-mix(in srgb, var(--silk) calc(var(--str) * 28%), transparent), transparent 14%);
}

.vib-flash.is-flash {
  animation: tug 0.92s ease-out forwards;
}

@keyframes tug {
  0% {
    opacity: calc(0.18 + var(--str) * 0.55);
  }
  100% {
    opacity: 0;
  }
}

@keyframes surface-in {
  0%,
  18% {
    opacity: 0.52;
  }
  100% {
    opacity: 0.2;
  }
}

@keyframes prompt-breathe {
  0%,
  100% {
    opacity: 0.42;
  }
  50% {
    opacity: 0.78;
  }
}

.title:not(.is-leaving) .title-prompt {
  animation: prompt-breathe 3.8s ease-in-out infinite;
}

.fatal {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 1rem;
  padding: 8vw;
  text-align: center;
  background:
    radial-gradient(80% 60% at 50% 45%, color-mix(in srgb, var(--paper) 10%, transparent), transparent 70%),
    var(--ink);
  color: var(--paper);
  pointer-events: none;
}

.fatal em {
  font-family: 'Shippori Mincho', serif;
  font-style: normal;
  font-size: clamp(1.8rem, 6vw, 2.8rem);
  font-weight: 600;
  letter-spacing: 0.28em;
}

.fatal p {
  margin: 0;
  max-width: 28em;
  font-weight: 300;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--dusk);
}

@media (max-width: 720px) {
  .title-season {
    right: 5vw;
    font-size: 0.68rem;
    letter-spacing: 0.36em;
  }

  .title-jp {
    letter-spacing: 0.12em;
  }

  .title-prompt {
    letter-spacing: 0.28em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .title,
  .title.is-leaving,
  .title.is-leaving .title-wash,
  .title.is-leaving .title-foxing,
  .title.is-leaving .title-jp,
  .play,
  .vib-amb {
    transition: none;
  }

  .title:not(.is-leaving) .title-prompt,
  .surface.is-new,
  .vib-flash.is-flash {
    animation: none;
  }

  .title:not(.is-leaving) .title-prompt {
    opacity: 0.62;
  }

  .surface.is-new {
    opacity: 0.32;
  }
}