/* ============================================================
   仮名の道 — Kana no Michi
   Palette: washi paper, sumi ink, shu vermilion, ai indigo, kin gold.
   ============================================================ */

:root {
  --washi:      #f2ead9;
  --washi-deep: #e7dabf;
  --paper:      #fbf6ea;
  --paper-warm: #f6eedd;
  --sumi:       #241f1a;
  --sumi-soft:  #5a5047;
  --sumi-faint: #8c8074;
  --shu:        #b23a2c;
  --shu-bright: #cf4a36;
  --ai:         #2a4a6b;
  --kin:        #a8823a;
  --matcha:     #6d7c45;
  --midori:     #2f7d4f;   /* 緑 — success */
  --midori-dark:#1f5c39;
  --rule:       rgba(36, 31, 26, 0.16);
  --rule-soft:  rgba(36, 31, 26, 0.09);
  --shadow:     inset 0 1px 0 rgba(255,255,255,.55), 0 2px 3px -2px rgba(80,58,32,.18),
                0 12px 26px -16px rgba(80,58,32,.45);
  --shadow-lift:inset 0 1px 0 rgba(255,255,255,.65), 0 4px 6px -3px rgba(80,58,32,.2),
                0 20px 36px -18px rgba(80,58,32,.5);
  --tex-op:     .5;

  /* Japanese: a mincho (serif) face, best available. BIZ UDPMincho and Yu Mincho ship
     with Windows, Hiragino with macOS, Noto elsewhere. MS Mincho is the last resort. */
  --font-jp: "Noto Serif JP Subset", "BIZ UDPMincho", "Yu Mincho", YuMincho, "YuMincho",
             "Hiragino Mincho ProN", "Hiragino Mincho Pro",
             "Noto Serif JP", "Noto Serif CJK JP", "Source Han Serif JP",
             "MS PMincho", "MS Mincho", serif;
  /* Latin prose: an old-style serif to sit beside the mincho. */
  --font-ui: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua",
             "Sitka Text", Charter, "Bitstream Charter", Georgia, "Times New Roman", serif;
  /* Romaji only — transliteration wants unambiguous letterforms, the way a scholarly
     gloss is set apart from the text it glosses. Fira Code if you have it. */
  --font-romaji: "Fira Code", "JetBrains Mono", "Cascadia Code", "Cascadia Mono",
                 ui-monospace, "SF Mono", "Segoe UI Mono", Consolas, "Liberation Mono", monospace;

  --ease: cubic-bezier(.2, .7, .3, 1);
}

:root[data-theme="night"] {
  --washi:      #15171b;
  --washi-deep: #101215;
  --paper:      #20242a;
  --paper-warm: #252a31;
  --sumi:       #e9dec8;
  --sumi-soft:  #b6ab97;
  --sumi-faint: #7d7566;
  --shu:        #d0523f;
  --shu-bright: #e3654e;
  --ai:         #7fa3c9;
  --kin:        #d5ae5c;
  --matcha:     #9aab68;
  --midori:     #4f9e6c;
  --midori-dark:#2f6b47;
  --rule:       rgba(233, 222, 200, 0.2);
  --rule-soft:  rgba(233, 222, 200, 0.1);
  --shadow:     inset 0 1px 0 rgba(255,255,255,.05), 0 2px 4px -2px rgba(0,0,0,.5),
                0 14px 30px -16px rgba(0,0,0,.8);
  --shadow-lift:inset 0 1px 0 rgba(255,255,255,.07), 0 4px 8px -3px rgba(0,0,0,.55),
                0 22px 40px -18px rgba(0,0,0,.85);
  --tex-op:     .28;
}

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

html {
  height: 100%;
  background-color: var(--washi);
}

body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font-ui);
  color: var(--sumi);
  background-color: var(--washi);
  /* washi fibre + a warm vignette, both generated, no image files */
  background-image:
    radial-gradient(120% 90% at 50% 0%, rgba(255,255,255,.35), transparent 60%),
    radial-gradient(130% 110% at 50% 100%, rgba(90,62,30,.13), transparent 62%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='260' height='260'%3E%3Cfilter id='f'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='260' height='260' filter='url(%23f)' opacity='.35'/%3E%3C/svg%3E");
  /* fixed to the viewport: the paper stays put while the page scrolls over it,
     and the gradient layers can never tile into a visible seam */
  background-attachment: fixed, fixed, fixed;
  background-repeat: no-repeat, no-repeat, repeat;
  background-size: auto, auto, 260px 260px;
  background-blend-mode: normal, multiply, soft-light;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

:root[data-theme="night"] body { background-blend-mode: normal, multiply, overlay; }

.jp, .btn__jp, .brand__jp { font-family: var(--font-jp); }

/* Proportional kana metrics: Japanese set with Latin-style fixed advances looks gappy. */
.jp, .btn__jp, .brand__jp, .prompt, .lesson__jp, .cell__jp, .title__jp,
.interstitial__kanji, .omikuji__fortune, .stamp, .example__row b {
  font-feature-settings: "palt" 1;
}

h1, h2, h3 { font-weight: 500; margin: 0; }

#petals {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.page {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  max-width: 62rem;
  margin: 0 auto;
  padding: 0 1.15rem 2rem;
}

/* ---------- 青海波 seigaiha band, used under the header and footer ---------- */
.topbar, .footer {
  position: relative;
}
.topbar::after, .footer::before {
  content: "";
  position: absolute;
  left: 0; right: 0;
  height: 14px;
  opacity: var(--tex-op);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='48' height='24' viewBox='0 0 48 24'%3E%3Cg fill='none' stroke='%23b23a2c' stroke-width='1.1'%3E%3Ccircle cx='0' cy='24' r='21'/%3E%3Ccircle cx='0' cy='24' r='14'/%3E%3Ccircle cx='0' cy='24' r='7'/%3E%3Ccircle cx='24' cy='24' r='21'/%3E%3Ccircle cx='24' cy='24' r='14'/%3E%3Ccircle cx='24' cy='24' r='7'/%3E%3Ccircle cx='48' cy='24' r='21'/%3E%3Ccircle cx='48' cy='24' r='14'/%3E%3Ccircle cx='48' cy='24' r='7'/%3E%3C/g%3E%3C/svg%3E");
  background-size: 48px 24px;
  -webkit-mask-image: linear-gradient(to right, transparent, #000 18%, #000 82%, transparent);
  mask-image: linear-gradient(to right, transparent, #000 18%, #000 82%, transparent);
}
.topbar::after { bottom: -2px; }
.footer::before { top: -6px; transform: scaleY(-1); }

/* ---------- topbar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 0 1rem;
  border-bottom: 1px solid var(--rule-soft);
}

.brand {
  display: flex;
  align-items: baseline;
  gap: .6rem;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  color: inherit;
  font: inherit;
}
.brand__jp {
  font-family: var(--font-jp);
  font-size: 1.22rem;
  letter-spacing: .22em;
  color: var(--shu);
}
.brand__en {
  font-size: .72rem;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--sumi-faint);
}
.brand:hover .brand__jp { color: var(--shu-bright); }

.topbar__tools { display: flex; gap: .5rem; }

.tool {
  width: 2.3rem;
  height: 2.3rem;
  border-radius: 50%;
  border: 1px solid var(--rule);
  background: var(--paper);
  color: var(--sumi-soft);
  font-family: var(--font-jp);
  font-size: .95rem;
  cursor: pointer;
  transition: all .25s var(--ease);
  box-shadow: var(--shadow);
}
.tool:hover { color: var(--shu); border-color: var(--shu); transform: translateY(-1px); }
.tool[aria-pressed="false"] { opacity: .4; }

/* ---------- footer ---------- */
.footer {
  margin-top: auto;
  padding-top: 1.6rem;
  text-align: center;
  font-size: .78rem;
  letter-spacing: .12em;
  color: var(--sumi-faint);
}
.footer__sep { margin: 0 .5rem; color: var(--shu); }

/* ---------- screens ---------- */
#screens { flex: 1; display: flex; flex-direction: column; }
.screen { display: none; animation: riseIn .5s var(--ease) both; }
.screen.is-active { display: block; }
.screen--play.is-active { display: flex; flex-direction: column; }

@keyframes riseIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: none; }
}

/* ---------- 門 the gate / title screen ---------- */
.gate { text-align: center; padding: 2.6rem 0 1rem; }

.torii {
  width: min(16rem, 52vw);
  color: var(--shu);
  filter: drop-shadow(0 10px 18px rgba(120, 40, 25, .22));
  animation: settle 1.1s var(--ease) both;
}
:root[data-theme="night"] .torii { filter: drop-shadow(0 0 22px rgba(208, 82, 63, .35)); }

@keyframes settle {
  from { opacity: 0; transform: translateY(-14px) scale(.97); }
  to   { opacity: 1; transform: none; }
}

.title { margin: .4rem 0 1rem; }
.title__jp {
  display: block;
  font-family: var(--font-jp);
  font-size: clamp(2.6rem, 9vw, 4.2rem);
  letter-spacing: .3em;
  text-indent: .3em;
  line-height: 1.1;
}
.title__en {
  display: block;
  margin-top: .7rem;
  font-size: .8rem;
  letter-spacing: .42em;
  text-transform: uppercase;
  color: var(--sumi-faint);
}

.lede {
  max-width: 30rem;
  margin: 0 auto 2.2rem;
  line-height: 1.85;
  color: var(--sumi-soft);
  font-size: .95rem;
}

.menu {
  display: grid;
  gap: .7rem;
  max-width: 24rem;
  margin: 0 auto;
}

.streak {
  margin-top: 1.8rem;
  font-size: .82rem;
  letter-spacing: .1em;
  color: var(--sumi-faint);
}
.streak b { color: var(--shu); font-weight: 500; }

/* ---------- buttons ---------- */
.btn {
  position: relative;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: .7rem;
  padding: .85rem 1.3rem;
  background: var(--paper);
  color: var(--sumi);
  border: 1px solid var(--rule);
  border-radius: 2px;
  font-family: var(--font-ui);
  font-size: .92rem;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: transform .22s var(--ease), box-shadow .22s var(--ease),
              border-color .22s var(--ease), color .22s var(--ease);
}
.btn__jp { font-family: var(--font-jp); font-size: 1.02rem; letter-spacing: .16em; }
.btn__en { color: var(--sumi-faint); font-size: .84rem; letter-spacing: .04em; }
.btn:hover:not(:disabled) { transform: translateY(-2px); box-shadow: var(--shadow-lift); border-color: var(--shu); }
.btn:hover:not(:disabled) .btn__jp { color: var(--shu); }
.btn:active:not(:disabled) { transform: translateY(0); }
.btn:disabled { opacity: .42; cursor: default; }

.btn--primary {
  background: var(--shu);
  border-color: var(--shu);
  color: #fdf6e8;
}
.btn--primary .btn__en { color: rgba(253, 246, 232, .72); }
.btn--primary:hover:not(:disabled) { background: var(--shu-bright); border-color: var(--shu-bright); }
.btn--primary:hover:not(:disabled) .btn__jp { color: #fdf6e8; }

.btn--ghost { background: transparent; box-shadow: none; }
.btn--danger { background: transparent; border-color: rgba(178,58,44,.4); box-shadow: none; }
.btn--danger .btn__jp, .btn--danger .btn__en { color: var(--shu); }

.link-btn {
  background: none; border: 0; padding: .3rem;
  font-family: var(--font-jp); font-size: .88rem; letter-spacing: .12em;
  color: var(--sumi-faint); cursor: pointer;
}
.link-btn span { font-family: var(--font-ui); font-size: .76rem; letter-spacing: .06em; }
.link-btn:hover { color: var(--shu); }

:focus-visible {
  outline: 2px solid var(--ai);
  outline-offset: 3px;
}

/* ---------- sheets (a sheet of paper with a thin brocade edge) ---------- */
.sheet, .omikuji, .interstitial {
  position: relative;
  margin: 1.8rem auto;
  max-width: 46rem;
  padding: 2.1rem clamp(1.1rem, 4vw, 2.4rem) 1.9rem;
  background: var(--paper);
  border: 1px solid var(--rule);
  box-shadow: var(--shadow-lift);
}
.sheet::before, .omikuji::before, .interstitial::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid var(--rule-soft);
  pointer-events: none;
}
.sheet::after, .omikuji::after, .interstitial::after {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--shu) 0 33%, var(--kin) 33% 66%, var(--ai) 66% 100%);
  opacity: .75;
}

.sheet__title { display: flex; align-items: baseline; gap: .9rem; flex-wrap: wrap; }
.sheet__title .jp { font-size: 1.5rem; letter-spacing: .2em; }
.sheet__title .en { font-size: .78rem; letter-spacing: .26em; text-transform: uppercase; color: var(--sumi-faint); }
.sheet__note { margin: .8rem 0 1.4rem; color: var(--sumi-soft); line-height: 1.8; font-size: .92rem; }
.sub-head { margin: 2rem 0 .9rem; font-size: .95rem; }
.sub-head .jp { font-family: var(--font-jp); letter-spacing: .16em; }
.sub-head .en { color: var(--sumi-faint); font-size: .78rem; letter-spacing: .16em; }

.sheet__foot { margin-top: 1.6rem; padding-top: 1.2rem; border-top: 1px solid var(--rule-soft); }
.sheet__actions { display: flex; gap: .7rem; justify-content: flex-end; flex-wrap: wrap; margin-top: 1.2rem; }
.sheet__actions .btn { flex: 0 1 auto; }
.selection { margin: 0; font-size: .86rem; color: var(--sumi-faint); }
.selection b { color: var(--shu); font-weight: 500; }

/* ---------- the switch ---------- */
.options { margin-bottom: 1.4rem; }
.switch { display: flex; align-items: flex-start; gap: .7rem; cursor: pointer; font-size: .88rem; }
.switch input { position: absolute; opacity: 0; width: 0; height: 0; }
.switch__box {
  flex: none;
  width: 1.15rem; height: 1.15rem;
  margin-top: .15rem;
  border: 1px solid var(--rule);
  background: var(--washi);
  position: relative;
  transition: all .2s var(--ease);
}
.switch input:checked + .switch__box { background: var(--shu); border-color: var(--shu); }
.switch input:checked + .switch__box::after {
  content: "";
  position: absolute;
  left: .34rem; top: .1rem;
  width: .3rem; height: .58rem;
  border: solid #fdf6e8;
  border-width: 0 1.5px 1.5px 0;
  transform: rotate(42deg);
}
.switch input:focus-visible + .switch__box { outline: 2px solid var(--ai); outline-offset: 2px; }
.switch__text b { font-family: var(--font-jp); letter-spacing: .14em; font-weight: 500; }
.switch__text i { display: block; font-size: .76rem; color: var(--sumi-faint); font-style: italic; }

/* ---------- deck cards ---------- */
.decks { display: grid; gap: .75rem; grid-template-columns: repeat(auto-fill, minmax(15.5rem, 1fr)); }

.deck {
  position: relative;
  display: flex;
  gap: .9rem;
  align-items: center;
  text-align: left;
  padding: .9rem 1rem;
  background: var(--paper-warm);
  border: 1px solid var(--rule);
  border-radius: 2px;
  cursor: pointer;
  font: inherit;
  color: inherit;
  transition: all .22s var(--ease);
}
.deck:hover { border-color: var(--shu); transform: translateY(-2px); box-shadow: var(--shadow); }
.deck[aria-pressed="true"] {
  border-color: var(--shu);
  background:
    linear-gradient(0deg, rgba(178,58,44,.07), rgba(178,58,44,.07)),
    var(--paper-warm);
  box-shadow: inset 0 0 0 1px var(--shu);
}
.deck[aria-pressed="true"]::after {
  content: "可";
  position: absolute;
  top: -.5rem; right: -.5rem;
  width: 1.6rem; height: 1.6rem;
  display: grid; place-items: center;
  font-family: var(--font-jp);
  font-size: .8rem;
  color: #fdf6e8;
  background: var(--shu);
  border-radius: 50%;
  transform: rotate(-9deg);
  animation: stampIn .3s var(--ease) both;
}
.deck__ring {
  flex: none;
  width: 2.9rem; height: 2.9rem;
  border-radius: 50%;
  display: grid; place-items: center;
  font-size: .68rem;
  color: var(--sumi-soft);
  background: conic-gradient(var(--shu) calc(var(--m) * 1turn), var(--rule-soft) 0);
  position: relative;
}
.deck__ring::before {
  content: "";
  position: absolute; inset: 3px;
  background: var(--paper-warm);
  border-radius: 50%;
}
.deck__ring span { position: relative; }
.deck__name { display: block; font-family: var(--font-jp); font-size: 1.05rem; letter-spacing: .12em; }
.deck__en { display: block; font-size: .78rem; color: var(--sumi-faint); margin-top: .18rem; }
.deck__count { display: block; font-size: .72rem; color: var(--sumi-faint); margin-top: .3rem; letter-spacing: .08em; }

/* ---------- 勝負 the play screen ---------- */
.screen--play { padding-top: 1.2rem; }

.hud {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: .9rem;
}
.hud__center { display: flex; gap: 1.4rem; }
.hud__stat { display: flex; align-items: baseline; gap: .35rem; }
.hud__stat i { font-family: var(--font-jp); font-style: normal; font-size: .78rem; color: var(--sumi-faint); }
.hud__stat b { font-size: 1.15rem; font-weight: 500; font-variant-numeric: tabular-nums; }
.hud__stat--combo b { color: var(--shu); }
.hud__stat--combo.is-hot b { animation: pop .35s var(--ease); }
@keyframes pop { 50% { transform: scale(1.35); } }

/* 提灯 paper lanterns stand in for lives */
.lanterns { display: flex; gap: .45rem; }
.lantern {
  width: 1.05rem; height: 1.45rem;
  border-radius: 46%;
  background:
    repeating-linear-gradient(to bottom, rgba(0,0,0,.14) 0 1px, transparent 1px 4px),
    radial-gradient(circle at 50% 38%, #f4c96b, var(--shu) 78%);
  box-shadow: 0 0 14px rgba(207,74,54,.5);
  position: relative;
  transition: all .45s var(--ease);
}
.lantern::before, .lantern::after {
  content: "";
  position: absolute; left: 50%; transform: translateX(-50%);
  width: .5rem; height: .16rem; background: var(--sumi-soft);
}
.lantern::before { top: -.12rem; }
.lantern::after { bottom: -.12rem; }
.lantern.is-out {
  background: var(--rule-soft);
  box-shadow: none;
  opacity: .45;
  animation: snuff .5s var(--ease);
}
@keyframes snuff {
  40% { transform: translateY(-4px) scale(1.15); filter: brightness(1.8); }
  100% { transform: none; }
}

/* the road, as a row of stones */
.road { display: flex; align-items: center; gap: .3rem; margin: .2rem 0 .3rem; }
.step {
  flex: 1;
  height: 3px;
  background: var(--rule-soft);
  border-radius: 2px;
  transition: background .4s var(--ease);
}
.step.is-done { background: var(--sumi-faint); }
.step.is-now  { background: var(--shu); box-shadow: 0 0 10px rgba(178,58,44,.5); }
.station-name {
  margin: .35rem 0 1.1rem;
  font-family: var(--font-jp);
  font-size: .8rem;
  letter-spacing: .24em;
  color: var(--sumi-faint);
  text-align: center;
}

/* 線香 the incense timer */
.incense { margin: 0 auto 1.3rem; width: min(30rem, 100%); }
.incense__stick {
  position: relative;
  height: 4px;
  background: var(--rule-soft);
  border-radius: 3px;
  overflow: visible;
}
.incense__burn {
  position: absolute;
  inset: 0 auto 0 0;
  width: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--sumi-faint), var(--kin) 70%, var(--shu-bright));
  transform-origin: left center;
}
.incense__burn::after {
  content: "";
  position: absolute;
  right: -4px; top: 50%;
  width: 9px; height: 9px;
  transform: translateY(-50%);
  border-radius: 50%;
  background: radial-gradient(circle, #ffd98a, var(--shu-bright) 65%, transparent 72%);
  box-shadow: 0 0 12px 3px rgba(207,74,54,.6);
}
.incense.is-low .incense__burn::after { animation: ember .5s infinite alternate; }
@keyframes ember { to { box-shadow: 0 0 18px 6px rgba(207,74,54,.85); } }

/* 掛軸 the hanging scroll */
.kakejiku {
  position: relative;
  width: min(32rem, 100%);
  margin: 0 auto 1.6rem;
  padding-top: 1.1rem;
}
.kakejiku__cord {
  position: absolute; top: 0; left: 50%;
  width: 1px; height: 1.1rem;
  background: var(--sumi-faint);
  transform: translateX(-50%);
}
.kakejiku__rod {
  display: block;
  height: 11px;
  margin: 0 -14px;
  border-radius: 6px;
  background: linear-gradient(180deg, #5d4a38, #3a2c20 55%, #241a12);
  box-shadow: 0 2px 6px rgba(0,0,0,.3);
}
.kakejiku__silk {
  padding: .55rem;
  background:
    linear-gradient(180deg, rgba(178,58,44,.16), rgba(42,74,107,.14)),
    var(--paper-warm);
  border-left: 1px solid var(--rule-soft);
  border-right: 1px solid var(--rule-soft);
}
.kakejiku__paper {
  background: var(--paper);
  border: 1px solid var(--rule-soft);
  padding: 2rem 1.2rem 1.8rem;
  text-align: center;
  min-height: 12.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: .6rem;
}
.prompt__label { margin: 0; font-size: .78rem; letter-spacing: .2em; text-transform: uppercase; color: var(--sumi-faint); }
.prompt {
  margin: 0;
  font-family: var(--font-jp);
  line-height: 1.25;
  font-size: clamp(2rem, 8vw, 3.4rem);
  letter-spacing: .06em;
  word-break: break-word;
  animation: inkIn .45s var(--ease) both;
}
.prompt.is-huge { font-size: clamp(4rem, 20vw, 7.5rem); letter-spacing: .02em; }
.prompt.is-latin { font-family: var(--font-ui); font-style: italic; font-size: clamp(1.6rem, 6vw, 2.6rem); }
.prompt.is-romaji {
  font-family: var(--font-romaji);
  font-style: normal;
  font-size: clamp(1.5rem, 5.5vw, 2.4rem);
  letter-spacing: .02em;
}
.prompt__sub { margin: 0; font-size: .85rem; color: var(--sumi-faint); min-height: 1.2em; letter-spacing: .06em; }

@keyframes inkIn {
  from { opacity: 0; filter: blur(7px); transform: scale(1.06); }
  to   { opacity: 1; filter: none; transform: none; }
}

/* 判子 the vermilion seal, pressed on a right answer */
.stamp {
  position: absolute;
  top: 50%; left: 50%;
  width: 6.5rem; height: 6.5rem;
  display: grid; place-items: center;
  font-family: var(--font-jp);
  font-size: 3.2rem;
  color: #fdf3e4;
  background: var(--midori);
  border: 4px solid var(--midori-dark);
  border-radius: 8px;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, -50%) rotate(-12deg) scale(1.7);
  mix-blend-mode: multiply;
}
:root[data-theme="night"] .stamp { mix-blend-mode: screen; }
.stamp.is-shown { animation: stampIn .5s var(--ease) forwards; }
.stamp.is-wrong { background: var(--shu); border-color: #8f2c21; }
@keyframes stampIn {
  0%   { opacity: 0; transform: translate(-50%,-50%) rotate(-22deg) scale(1.8); filter: blur(4px); }
  35%  { opacity: .94; transform: translate(-50%,-50%) rotate(-10deg) scale(.96); filter: none; }
  55%  { transform: translate(-50%,-50%) rotate(-12deg) scale(1); }
  100% { opacity: .9; transform: translate(-50%,-50%) rotate(-12deg) scale(1); }
}

/* ---------- answers ---------- */
.answers {
  display: grid;
  gap: .65rem;
  grid-template-columns: repeat(2, 1fr);
  width: min(32rem, 100%);
  margin: 0 auto;
}
.answer {
  position: relative;
  padding: 1rem .9rem;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 2px;
  font-family: var(--font-jp);
  font-size: 1.35rem;
  letter-spacing: .08em;
  color: var(--sumi);
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: transform .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
  animation: riseIn .35s var(--ease) both;
}
.answer--latin { font-family: var(--font-ui); font-size: 1.02rem; letter-spacing: .02em; }
.answer--romaji { font-family: var(--font-romaji); font-size: .98rem; letter-spacing: .01em; }
.answer:nth-child(2) { animation-delay: .04s; }
.answer:nth-child(3) { animation-delay: .08s; }
.answer:nth-child(4) { animation-delay: .12s; }
.answer__key {
  position: absolute;
  top: .3rem; left: .45rem;
  font-family: var(--font-ui);
  font-size: .62rem;
  color: var(--sumi-faint);
  opacity: .6;
}
.answer:hover:not(:disabled) { transform: translateY(-2px); border-color: var(--shu); }
.answer:disabled { cursor: default; }
.answer.is-right {
  border-color: var(--midori);
  background: linear-gradient(0deg, rgba(47,125,79,.16), rgba(47,125,79,.16)), var(--paper);
  box-shadow: inset 0 0 0 1px var(--midori);
}
.answer.is-wrong {
  border-color: var(--shu);
  background: linear-gradient(0deg, rgba(178,58,44,.14), rgba(178,58,44,.14)), var(--paper);
  box-shadow: inset 0 0 0 1px var(--shu);
  opacity: .9;
  animation: shake .4s var(--ease);
}
.answer.is-dim { opacity: .35; }
@keyframes shake {
  20% { transform: translateX(-6px); }
  45% { transform: translateX(5px); }
  70% { transform: translateX(-3px); }
  100% { transform: none; }
}

/* ---------- typing ---------- */
.typing { display: flex; gap: .6rem; width: min(32rem, 100%); margin: 0 auto; }
.typing input {
  flex: 1;
  padding: .95rem 1rem;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-bottom: 2px solid var(--sumi-faint);
  border-radius: 2px;
  font-family: var(--font-romaji);
  font-size: 1.15rem;
  letter-spacing: .04em;
  color: var(--sumi);
}
.typing input::placeholder { color: var(--sumi-faint); opacity: .55; font-style: italic; }
.typing input:focus { outline: none; border-bottom-color: var(--shu); }
.typing .btn { padding: .85rem 1.4rem; }

.feedback {
  text-align: center;
  margin: 1.2rem auto 0;
  min-height: 3.2rem;
  font-size: .95rem;
  line-height: 1.7;
  color: var(--sumi-soft);
  max-width: 32rem;
}
.feedback b { font-family: var(--font-jp); font-size: 1.25rem; color: var(--shu); font-weight: 500; }
.feedback.is-right b { color: var(--midori); }
.feedback i { font-style: italic; color: var(--sumi-faint); }

/* ---------- 宿場 station interstitial ---------- */
.interstitial { text-align: center; padding: 3.2rem 1.5rem; max-width: 34rem; }
.interstitial__kanji {
  margin: 0;
  font-family: var(--font-jp);
  font-size: clamp(3rem, 12vw, 4.6rem);
  letter-spacing: .24em;
  text-indent: .24em;
  animation: inkIn .7s var(--ease) both;
}
.interstitial__romaji {
  margin: .5rem 0 0;
  font-size: .8rem;
  letter-spacing: .4em;
  text-transform: uppercase;
  color: var(--shu);
}
.interstitial__line {
  margin: 1.6rem auto 2.2rem;
  max-width: 24rem;
  line-height: 2;
  color: var(--sumi-soft);
  font-style: italic;
}
.interstitial .btn { display: inline-flex; }

/* ---------- 御神籤 the result slip ---------- */
.omikuji { max-width: 38rem; text-align: center; }
.omikuji__head { padding-bottom: 1.4rem; border-bottom: 1px solid var(--rule-soft); }
.omikuji__fortune {
  margin: 0;
  font-family: var(--font-jp);
  font-size: clamp(3.4rem, 14vw, 5.4rem);
  letter-spacing: .2em;
  text-indent: .2em;
  color: var(--shu);
  animation: inkIn .8s var(--ease) both;
}
.omikuji__romaji { margin: .3rem 0 0; letter-spacing: .34em; text-transform: uppercase; font-size: .74rem; color: var(--sumi-faint); }
.omikuji__gloss { margin: .7rem 0 0; font-style: italic; color: var(--sumi-soft); }

.tally {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(7rem, 1fr));
  gap: 1.2rem .8rem;
  margin: 1.6rem 0 0;
  text-align: center;
}
.tally div { display: flex; flex-direction: column-reverse; gap: .3rem; }
.tally dt { font-size: .72rem; letter-spacing: .16em; text-transform: uppercase; color: var(--sumi-faint); }
.tally dd { margin: 0; font-size: 1.6rem; font-variant-numeric: tabular-nums; }
.tally dd small { font-size: .8rem; color: var(--sumi-faint); }

.missed { margin-top: 2rem; text-align: left; }
.missed h3 { font-size: .9rem; margin-bottom: .7rem; }
.missed h3 .jp { font-family: var(--font-jp); letter-spacing: .16em; }
.missed h3 .en { color: var(--sumi-faint); font-size: .78rem; }
.missed__list { display: grid; gap: .4rem; grid-template-columns: repeat(auto-fill, minmax(11rem, 1fr)); }
.missed__item {
  padding: .55rem .7rem;
  background: var(--paper-warm);
  border-left: 2px solid var(--shu);
  font-size: .85rem;
}
.missed__item b { font-family: var(--font-jp); font-size: 1.15rem; font-weight: 500; display: block; }
.missed__item span { font-family: var(--font-romaji); font-size: .78rem; color: var(--sumi-faint); }

/* ---------- 巻物 study ---------- */
.tabs { display: flex; flex-wrap: wrap; gap: .4rem; margin-bottom: 1.1rem; }
.tab {
  padding: .45rem .8rem;
  background: transparent;
  border: 1px solid var(--rule-soft);
  border-radius: 2px;
  font-family: var(--font-jp);
  font-size: .88rem;
  letter-spacing: .1em;
  color: var(--sumi-soft);
  cursor: pointer;
  transition: all .2s var(--ease);
}
.tab:hover { border-color: var(--shu); color: var(--shu); }
.tab[aria-selected="true"] { background: var(--shu); border-color: var(--shu); color: #fdf6e8; }
.deck-note { margin: 0 0 1.2rem; font-style: italic; color: var(--sumi-soft); line-height: 1.8; font-size: .9rem; }

.chart { display: grid; gap: .4rem; }
.chart--5 { grid-template-columns: repeat(5, 1fr); }
.chart--3 { grid-template-columns: repeat(auto-fill, minmax(6rem, 1fr)); }
.chart--2 { grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr)); }
.cell {
  padding: .6rem .4rem;
  text-align: center;
  background: var(--paper-warm);
  border: 1px solid var(--rule-soft);
  border-radius: 2px;
}
.cell__jp { display: block; font-family: var(--font-jp); font-size: 1.5rem; line-height: 1.3; }
.cell__read { display: block; font-family: var(--font-romaji); font-size: .72rem; color: var(--shu); letter-spacing: .02em; margin-top: .2rem; }
.cell__en { display: block; font-size: .75rem; color: var(--sumi-faint); margin-top: .2rem; line-height: 1.5; }
.cell__hint { display: block; font-size: .72rem; color: var(--sumi-faint); font-style: italic; margin-top: .35rem; line-height: 1.6; }
.cell--wide { text-align: left; padding: .8rem .9rem; }
.cell--wide .cell__jp { font-size: 1.25rem; }
.cell__bar { display: block; height: 2px; margin-top: .5rem; background: var(--rule-soft); }
.cell__bar i { display: block; height: 100%; background: var(--matcha); }

/* ---------- 記録 records ---------- */
.totals {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(8rem, 1fr));
  gap: 1rem;
  margin-top: 1.2rem;
}
.total {
  padding: 1rem .8rem;
  background: var(--paper-warm);
  border: 1px solid var(--rule-soft);
  text-align: center;
}
.total b { display: block; font-size: 1.7rem; font-weight: 500; font-variant-numeric: tabular-nums; }
.total span { display: block; margin-top: .3rem; font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--sumi-faint); }
.total i { display: block; font-family: var(--font-jp); font-style: normal; font-size: .82rem; color: var(--shu); margin-bottom: .35rem; letter-spacing: .12em; }

.progress-list { display: grid; gap: .8rem; }
.prow { display: grid; grid-template-columns: 1fr auto; gap: .3rem .8rem; align-items: baseline; }
.prow__name { font-family: var(--font-jp); font-size: .98rem; letter-spacing: .1em; }
.prow__name small { font-family: var(--font-ui); font-size: .74rem; color: var(--sumi-faint); letter-spacing: .02em; margin-left: .5rem; }
.prow__rank { font-family: var(--font-jp); font-size: .84rem; color: var(--shu); letter-spacing: .1em; }
.prow__bar { grid-column: 1 / -1; height: 5px; background: var(--rule-soft); border-radius: 3px; overflow: hidden; }
.prow__bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--ai), var(--matcha) 55%, var(--kin)); transition: width .8s var(--ease); }

/* ---------- responsive ---------- */
@media (max-width: 34rem) {
  .page { padding: 0 .85rem 1.5rem; }
  .brand__en { display: none; }
  .answers { grid-template-columns: 1fr; }
  .kakejiku__paper { min-height: 10rem; padding: 1.4rem .8rem; }
  .chart--5 { grid-template-columns: repeat(3, 1fr); }
  .sheet__actions { justify-content: stretch; }
  .sheet__actions .btn { flex: 1 1 auto; }
  .btn { flex-direction: column; gap: .2rem; align-items: center; }
  .hud__center { gap: .9rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  #petals { display: none; }
}

/* the top batten is slim; the bottom roller is weighted and capped at both ends */
.kakejiku__rod--top { height: 8px; margin: 0 -8px; }
.kakejiku__rod--bottom { height: 14px; position: relative; }
.kakejiku__rod--bottom::before,
.kakejiku__rod--bottom::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 9px; height: 20px;
  transform: translateY(-50%);
  border-radius: 3px;
  background: linear-gradient(180deg, #6b5540, #382a1e);
  box-shadow: 0 2px 5px rgba(0,0,0,.35);
}
.kakejiku__rod--bottom::before { left: -7px; }
.kakejiku__rod--bottom::after  { right: -7px; }

/* An author display rule outranks the UA sheet's [hidden], so say it explicitly. */
[hidden] { display: none !important; }

/* ---------- 手習い the teaching card ---------- */
.lesson {
  position: relative;
  max-width: 34rem;
  margin: 1.8rem auto;
  text-align: center;
}
.lesson__count {
  margin: 0 0 .8rem;
  font-size: .74rem;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--sumi-faint);
}
.lesson__card {
  position: relative;
  padding: 2.4rem 1.6rem 2rem;
  background: var(--paper);
  border: 1px solid var(--rule);
  box-shadow: var(--shadow-lift);
}
.lesson__card::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid var(--rule-soft);
  pointer-events: none;
}
.lesson__card::after {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--midori) 0 33%, var(--kin) 33% 66%, var(--ai) 66% 100%);
  opacity: .75;
}
.lesson__jp {
  margin: 0;
  font-family: var(--font-jp);
  font-size: clamp(4.5rem, 22vw, 8rem);
  line-height: 1.1;
  letter-spacing: .04em;
  animation: inkIn .6s var(--ease) both;
}
.lesson__jp.is-long { font-size: clamp(1.8rem, 8vw, 3rem); letter-spacing: .08em; line-height: 1.5; }
.lesson__reading {
  margin: .6rem 0 0;
  font-family: var(--font-romaji);
  font-size: 1.15rem;
  font-style: normal;
  letter-spacing: .12em;
  color: var(--ai);
}
.lesson__readings {
  display: flex;
  justify-content: center;
  gap: 1.6rem;
  margin: 1.1rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--rule-soft);
}
.lesson__readings div { display: flex; flex-direction: column; gap: .25rem; }
.lesson__readings dt { font-size: .68rem; letter-spacing: .16em; text-transform: uppercase; color: var(--sumi-faint); }
.lesson__readings dd { margin: 0; font-family: var(--font-jp); font-size: 1.25rem; letter-spacing: .1em; }
.lesson__meaning {
  margin: 1rem 0 0;
  font-size: 1.05rem;
  color: var(--sumi);
}
.lesson__hint {
  margin: 1.2rem auto 0;
  max-width: 24rem;
  padding: .7rem .9rem;
  background: var(--paper-warm);
  border-left: 2px solid var(--kin);
  font-style: italic;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--sumi-soft);
  text-align: left;
}
.lesson__actions { display: flex; gap: .7rem; justify-content: center; margin-top: 1.4rem; }
.lesson__actions .btn { min-width: 9rem; }
.lesson__foot {
  margin-top: 1.4rem;
  font-size: .8rem;
  line-height: 1.8;
  color: var(--sumi-faint);
}

/* both reading families, in the scrolls */
.cell__yomi {
  display: block;
  margin-top: .25rem;
  font-family: var(--font-jp);
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--sumi-soft);
}

/* ---------- 心得 the rule box ---------- */
.rule {
  margin: 0 0 1.4rem;
  padding: 1.1rem 1.2rem 1rem;
  background: var(--paper-warm);
  border: 1px solid var(--rule-soft);
  border-left: 3px solid var(--ai);
  text-align: left;
}
.rule h3 { margin: 0 0 .7rem; font-size: .95rem; }
.rule h3 .jp { font-family: var(--font-jp); letter-spacing: .18em; }
.rule h3 .en { color: var(--sumi-faint); font-size: .76rem; letter-spacing: .14em; text-transform: uppercase; }
.rule ul { margin: 0 0 .8rem; padding-left: 1.1rem; }
.rule li { margin-bottom: .45rem; font-size: .88rem; line-height: 1.8; color: var(--sumi-soft); }
.rule li b { color: var(--sumi); font-weight: 500; }
.rule p { margin: 0; font-size: .84rem; line-height: 1.8; color: var(--sumi-faint); }
.rule i { font-family: var(--font-romaji); font-style: normal; font-size: .92em; color: var(--ai); }

/* ---------- the compound on a teaching card ---------- */
.example {
  margin: 1.1rem auto 0;
  padding-top: 1rem;
  border-top: 1px solid var(--rule-soft);
}
.example__label {
  display: block;
  font-size: .68rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--sumi-faint);
}
.example__row {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: .7rem;
  margin-top: .4rem;
}
.example__row b { font-family: var(--font-jp); font-size: 1.9rem; font-weight: 500; letter-spacing: .06em; }
.example__row i { font-family: var(--font-romaji); font-style: normal; font-size: .98rem; color: var(--ai); letter-spacing: .02em; }
.example__en { display: block; margin-top: .3rem; font-size: .85rem; color: var(--sumi-soft); }

/* ---------- the compound in the scrolls ---------- */
.cell__ex {
  display: block;
  margin-top: .35rem;
  font-size: .74rem;
  line-height: 1.6;
  color: var(--sumi-soft);
}
.cell__ex i { font-family: var(--font-romaji); font-style: normal; font-size: .95em; color: var(--ai); }

/* how many times one item tripped you up */
.missed__item b { display: flex; align-items: baseline; justify-content: space-between; gap: .5rem; }
.missed__count {
  font-family: var(--font-ui);
  font-style: normal;
  font-size: .68rem;
  letter-spacing: .08em;
  color: var(--shu);
  white-space: nowrap;
}

/* an item you never once got right reads louder than one you merely fumbled */
.missed__count.is-cold { color: var(--shu); font-weight: 500; }
.missed__count:not(.is-cold) { color: var(--sumi-faint); }

/* ---------- 聴 the listening prompt ---------- */
.listen {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .3rem;
  margin: 0 auto;
  padding: .9rem 1.4rem;
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 2px;
  cursor: pointer;
  color: var(--sumi);
  transition: all .2s var(--ease);
}
.listen:hover { border-color: var(--ai); color: var(--ai); }
.listen__mark { font-family: var(--font-jp); font-size: 2rem; line-height: 1; }
.listen__hint { font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; color: var(--sumi-faint); }
.prompt.is-muted { color: var(--sumi-faint); opacity: .4; letter-spacing: .3em; }

/* ---------- 語 the word builder ---------- */
.builder { width: min(32rem, 100%); margin: 0 auto; }
.builder__slots {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: .4rem;
  min-height: 3.6rem;
  margin-bottom: 1.1rem;
  cursor: pointer;
}
.slot {
  width: 3rem; height: 3.4rem;
  display: grid; place-items: center;
  font-family: var(--font-jp);
  font-size: 1.7rem;
  background: var(--paper-warm);
  border: 1px solid var(--rule-soft);
  border-bottom: 2px solid var(--rule);
  border-radius: 2px;
}
.slot.is-filled { border-bottom-color: var(--ai); background: var(--paper); }
.builder__tiles { display: flex; justify-content: center; flex-wrap: wrap; gap: .45rem; }
.tile {
  width: 3.1rem; height: 3.4rem;
  font-family: var(--font-jp);
  font-size: 1.6rem;
  color: var(--sumi);
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 2px;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: transform .15s var(--ease), border-color .15s var(--ease);
}
.tile:hover:not(:disabled) { transform: translateY(-3px); border-color: var(--shu); }
.tile:disabled { opacity: .25; box-shadow: none; cursor: default; }
.builder__actions { display: flex; align-items: center; justify-content: center; gap: 1rem; margin-top: 1.2rem; }

/* a switch the machine cannot honour */
.switch.is-disabled { opacity: .45; cursor: default; }
.switch.is-disabled .switch__text i { color: var(--shu); font-style: normal; }
.options { display: grid; gap: .75rem; }

/* ---------- 似 the showdown: the confusable signs, side by side and large ---------- */
.answers.is-duel {
  grid-template-columns: repeat(auto-fit, minmax(5.4rem, 1fr));
  gap: .5rem;
}
.answers.is-duel .answer {
  padding: 1.5rem .4rem;
  font-size: 3.2rem;
  line-height: 1.05;
  letter-spacing: 0;
}
.answers.is-duel .answer--romaji { font-size: 1.35rem; padding: 1.7rem .4rem; }
.answers.is-duel .answer__key { top: .35rem; left: .5rem; }
@media (max-width: 34rem) {
  .answers.is-duel { grid-template-columns: repeat(auto-fit, minmax(4.4rem, 1fr)); }
  .answers.is-duel .answer { font-size: 2.5rem; padding: 1.1rem .3rem; }
}

/* what the ticked switches have left of the list */
.filter-note {
  margin: 0 0 1rem;
  padding: .6rem .8rem;
  background: var(--paper-warm);
  border-left: 2px solid var(--ai);
  font-size: .82rem;
  letter-spacing: .04em;
  color: var(--sumi-soft);
}

/* what the placement ladder concluded */
.verdict {
  margin: 1.6rem 0 0;
  padding: .9rem 1rem;
  background: var(--paper-warm);
  border-left: 3px solid var(--midori);
  text-align: left;
  font-size: .9rem;
  line-height: 1.85;
  color: var(--sumi-soft);
}
.verdict b { font-family: var(--font-jp); font-weight: 500; color: var(--sumi); letter-spacing: .1em; }

/* forgetting a single road */
.prow { padding-bottom: .55rem; border-bottom: 1px solid var(--rule-soft); }
.prow:last-child { border-bottom: 0; }
.prow__right { display: flex; align-items: baseline; gap: .85rem; }
.prow__forget {
  background: none;
  border: 0;
  border-bottom: 1px solid transparent;
  padding: 0;
  font-family: var(--font-jp);
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--sumi-faint);
  cursor: pointer;
  white-space: nowrap;
}
.prow__forget:hover:not(:disabled) { color: var(--shu); border-bottom-color: var(--shu); }
.prow__forget:disabled { opacity: .3; cursor: default; }