/* B（theme-day）＝わざと崩した UI。theme-b-jolt＝切り替え直後のショック */

/* --- 切り替え瞬間（A→B のクリック時のみ JS が付与） --- */
html.theme-b-jolt body {
  animation: theme-b-rattle 0.07s steps(2) 14;
}

@keyframes theme-b-rattle {
  0%,
  100% {
    transform: translate(0, 0);
  }
  25% {
    transform: translate(-5px, 3px) rotate(-0.4deg);
  }
  50% {
    transform: translate(4px, -4px) rotate(0.3deg);
  }
  75% {
    transform: translate(-3px, -2px);
  }
}

html.theme-b-jolt::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 99990;
  pointer-events: none;
  background: #fff;
  mix-blend-mode: difference;
  animation: theme-b-flash 0.85s ease-out forwards;
}

@keyframes theme-b-flash {
  0% {
    opacity: 0.95;
  }
  35% {
    opacity: 0.4;
  }
  100% {
    opacity: 0;
  }
}

html.theme-b-jolt .scanlines {
  opacity: 0.35;
  animation: theme-b-scan 0.5s steps(3) 3;
}

@keyframes theme-b-scan {
  0%,
  100% {
    opacity: 0.04;
  }
  50% {
    opacity: 0.45;
  }
}

/* --- B モード常時：レイアウトを「壊した」ように --- */
html.theme-day body::before {
  content: "MODE_B · LAYOUT=UNSTABLE · 戻すは A";
  position: fixed;
  top: max(12px, env(safe-area-inset-top));
  left: 50%;
  transform: translateX(-50%) rotate(-2deg);
  z-index: 45;
  padding: 5px 10px;
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #f5f0e8;
  background: var(--error);
  border: 1px solid var(--fg);
  pointer-events: none;
  max-width: 96vw;
  text-align: center;
  line-height: 1.35;
}

html.theme-day main {
  transform: skewY(1.2deg) scale(1.008);
  transform-origin: 50% 8%;
}

html.theme-day .masthead {
  transform: rotate(2.2deg) translateX(-2%);
  border-bottom-style: dashed;
}

html.theme-day .opener {
  transform: rotate(calc(var(--scroll-tilt) * 1.4deg)) skewX(calc((var(--look-x) - 0.5) * 8deg));
}

html.theme-day .opener__letter--e {
  transform: rotate(-18deg) translate(-8%, -5%);
}

html.theme-day .opener__letter--m {
  transform: rotate(9deg) translate(-12%, 8%) scale(1.06);
  mix-blend-mode: difference;
}

html.theme-day .opener__letter--a {
  transform: rotate(-42deg) translate(10%, 20%);
}

html.theme-day .opener__letter--k {
  transform: rotate(108deg) scale(1.15);
  opacity: 0.55;
}

html.theme-day .opener__sub--rift {
  transform: rotate(-4deg) translate(4%, 8%) scale(0.97);
  clip-path: polygon(2% 0, 96% 4%, 100% 96%, 0 92%);
}

html.theme-day .manifesto--collage {
  transform: rotate(-0.8deg) translateX(-1.5%);
}

html.theme-day .manifesto__label--detached {
  transform: rotate(-82deg) translate(10px, -8px);
  filter: contrast(1.2);
}

html.theme-day .manifesto__frag--1 {
  transform: rotate(2.5deg) translateX(-8%);
  clip-path: polygon(0 2%, 98% 0, 100% 97%, 5% 100%);
}

html.theme-day .manifesto__frag--2 {
  transform: rotate(-3deg) translateX(6%);
  max-height: 22rem;
}

html.theme-day .manifesto__aside-block--parasite {
  transform: rotate(7deg) translate(12px, -20px);
  mix-blend-mode: difference;
  opacity: 0.92;
}

html.theme-day .work--stage {
  transform: rotate(0.65deg) translateY(-0.5rem);
}

html.theme-day .work__title-chunk--a {
  transform: rotate(-14deg) translate(-6%, -8px);
}

html.theme-day .work__title-chunk--b {
  transform: rotate(11deg) translate(4%, 35%);
  letter-spacing: 0.42em;
}

html.theme-day .work__title-chunk--c {
  transform: rotate(22deg) translate(8px, 12px);
  opacity: 0.65;
}

html.theme-day .work__note--sideways {
  transform: rotate(195deg) translateX(12px);
  opacity: 0.75;
}

html.theme-day .void-nav {
  transform: skewX(-4deg);
  transform-origin: bottom center;
}

html.theme-day .colophon--rupture {
  transform: rotate(-0.6deg) translateX(2%);
}

html.theme-day .colophon__shard--late {
  transform: rotate(5deg) translateY(0.6em) translateX(-4%);
}

html.theme-day .foot-stamp--drift {
  transform: translateX(-6%) rotate(2deg);
  letter-spacing: 0.28em;
}

html.theme-day .work-piece {
  box-shadow: 9px -5px 0 var(--accent);
}

html.theme-day .work-piece:nth-child(3n + 1) {
  transform: translateY(14px) rotate(-3deg);
}

html.theme-day .work-piece:nth-child(3n + 2) {
  transform: translateY(-10px) rotate(2.2deg);
}

html.theme-day .work-piece:nth-child(3n) {
  transform: translateY(4px) rotate(-1.5deg);
}

html.theme-day .halftone {
  opacity: 0.22;
  mix-blend-mode: multiply;
}

@media (prefers-reduced-motion: reduce) {
  html.theme-b-jolt body {
    animation: none;
  }

  html.theme-b-jolt::after {
    display: none;
  }

  html.theme-b-jolt .scanlines {
    animation: none;
    opacity: 0.04;
  }

  html.theme-day body::before {
    display: none;
  }

  html.theme-day main,
  html.theme-day .masthead,
  html.theme-day .opener,
  html.theme-day .opener__letter--e,
  html.theme-day .opener__letter--m,
  html.theme-day .opener__letter--a,
  html.theme-day .opener__letter--k,
  html.theme-day .opener__sub--rift,
  html.theme-day .manifesto--collage,
  html.theme-day .manifesto__label--detached,
  html.theme-day .manifesto__frag--1,
  html.theme-day .manifesto__frag--2,
  html.theme-day .manifesto__aside-block--parasite,
  html.theme-day .work--stage,
  html.theme-day .work__title-chunk--a,
  html.theme-day .work__title-chunk--b,
  html.theme-day .work__title-chunk--c,
  html.theme-day .work__note--sideways,
  html.theme-day .void-nav,
  html.theme-day .colophon--rupture,
  html.theme-day .colophon__shard--late,
  html.theme-day .foot-stamp--drift,
  html.theme-day .work-piece,
  html.theme-day .work-piece:nth-child(3n + 1),
  html.theme-day .work-piece:nth-child(3n + 2),
  html.theme-day .work-piece:nth-child(3n) {
    transform: none;
    filter: none;
    opacity: 1;
    mix-blend-mode: normal;
    clip-path: none;
    box-shadow: 4px 4px 0 var(--card-edge);
  }

  html.theme-day .halftone {
    mix-blend-mode: overlay;
    opacity: 0.12;
  }
}