/* Knife Catcher: woodblock print tokens (locked, see BRIEF.md design matrix)
   paper #F0E6CD · paper-dark #E2D3AE · indigo #1E2A52 · night #121A36 · pale #AAB6D6
   vermilion #D6402C · ink #16141A · gold #E0A93A
   type: Potta One (display) · Zen Antique (body) · Zen Kaku Gothic New 500/900 (labels, numbers)
   space: 8 16 24 40 64 104 · radius 0 · shadow: hard 6px ink offset · motion: "stamp" */

@font-face { font-family: 'Potta One'; src: url(assets/fonts/potta-one-latin-400-normal.woff2) format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Zen Antique'; src: url(assets/fonts/zen-antique-latin-400-normal.woff2) format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Zen Kaku Gothic New'; src: url(assets/fonts/zen-kaku-gothic-new-latin-500-normal.woff2) format('woff2'); font-weight: 500; font-display: swap; }
@font-face { font-family: 'Zen Kaku Gothic New'; src: url(assets/fonts/zen-kaku-gothic-new-latin-900-normal.woff2) format('woff2'); font-weight: 900; font-display: swap; }

:root {
  --paper: #F0E6CD; --paper-d: #E2D3AE; --indigo: #1E2A52; --night: #121A36; --pale: #AAB6D6;
  --verm: #D6402C; --verm-d: #B7321F; --ink: #16141A; --gold: #E0A93A;
  --s1: 8px; --s2: 16px; --s3: 24px; --s4: 40px; --s5: 64px; --s6: 104px;
  --hard: 6px 6px 0 var(--ink);
  --display: 'Potta One', 'Zen Antique', serif;
  --body: 'Zen Antique', Georgia, serif;
  --label: 'Zen Kaku Gothic New', 'Zen Antique', sans-serif;
  --grain: repeating-linear-gradient(178deg, rgba(120, 90, 40, .07) 0 2px, transparent 2px 9px),
           repeating-linear-gradient(181deg, rgba(120, 90, 40, .05) 0 1px, transparent 1px 23px);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; color: var(--ink); font-family: var(--body); font-size: 18px; line-height: 1.55;
  background-color: var(--paper); background-image: var(--grain); overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
button { font: inherit; cursor: pointer; }
:focus-visible { outline: 3px solid var(--verm); outline-offset: 3px; }

/* ---------- top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50; display: flex; align-items: center; justify-content: space-between;
  gap: var(--s2); padding: 10px var(--s3); background: var(--indigo); color: var(--paper);
  border-bottom: 4px solid var(--ink);
}
.topbar-name { font-family: var(--display); font-size: 20px; text-decoration: none; letter-spacing: .04em; }
.topbar-nav { display: flex; gap: var(--s3); font-family: var(--label); font-weight: 500; font-size: 15px; }
.topbar-nav a { text-decoration: none; border-bottom: 2px solid transparent; }
.topbar-nav a:hover { border-color: var(--verm); }

/* ---------- seigaiha waves ---------- */
.waves {
  --w: var(--indigo); --c: var(--paper);
  height: 70px; background-color: var(--w);
  background-image:
    radial-gradient(circle at 100% 150%, var(--w) 24%, var(--c) 24% 28%, var(--w) 28% 36%, var(--c) 36% 40%, transparent 40%),
    radial-gradient(circle at 0 150%, var(--w) 24%, var(--c) 24% 28%, var(--w) 28% 36%, var(--c) 36% 40%, transparent 40%),
    radial-gradient(circle at 50% 100%, var(--c) 10%, var(--w) 10% 23%, var(--c) 23% 30%, var(--w) 30% 43%, var(--c) 43% 50%, var(--w) 50% 63%, var(--c) 63% 71%, transparent 71%),
    radial-gradient(circle at 100% 50%, var(--c) 5%, var(--w) 5% 15%, var(--c) 15% 20%, var(--w) 20% 29%, var(--c) 29% 34%, var(--w) 34% 44%, var(--c) 44% 49%, transparent 49%),
    radial-gradient(circle at 0 50%, var(--c) 5%, var(--w) 5% 15%, var(--c) 15% 20%, var(--w) 20% 29%, var(--c) 29% 34%, var(--w) 34% 44%, var(--c) 44% 49%, transparent 49%);
  background-size: 64px 32px;
  border-top: 5px solid var(--ink);
}

/* ---------- hero: title print ---------- */
.hero {
  position: relative; display: grid; grid-template-columns: 170px minmax(280px, 520px) minmax(300px, 1fr);
  gap: var(--s4); align-items: center; padding: var(--s5) var(--s4) 0; max-width: 1360px; margin: 0 auto;
  min-height: calc(100vh - 56px);
}
.hero-sky { position: absolute; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }
.woodcut-chart { position: absolute; left: 13%; top: 0; width: min(50vw, 680px); height: 96%; opacity: .95; }
.fuji {
  position: absolute; left: 22%; bottom: 70px; width: 520px; height: 180px; background: var(--indigo);
  clip-path: polygon(0 100%, 40% 12%, 47% 4%, 53% 4%, 60% 12%, 100% 100%);
}
.fuji::after {
  content: ''; position: absolute; inset: 0; background: var(--paper);
  clip-path: polygon(38% 15%, 47% 4%, 53% 4%, 62% 15%, 58% 22%, 54% 17%, 50% 26%, 46% 17%, 42% 24%);
}
.cartouche, .hero-moon, .hero-copy { position: relative; z-index: 2; }
.cartouche {
  align-self: start; justify-self: start; display: flex; flex-direction: column; align-items: center; gap: var(--s1);
  padding: var(--s2) 12px; background: var(--paper); border: 5px solid var(--ink); outline: 3px solid var(--verm);
  outline-offset: -12px; box-shadow: var(--hard);
}
.cartouche-small { font-family: var(--label); font-weight: 900; font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--verm); }
.cartouche-title {
  margin: 0; display: flex; flex-direction: row-reverse; gap: 6px; font-family: var(--display); font-weight: 400;
  font-size: 52px; line-height: .98; color: var(--ink);
}
.cartouche-title span { writing-mode: vertical-rl; text-orientation: upright; letter-spacing: -.06em; }
.hero-moon {
  aspect-ratio: 1; border-radius: 50%; overflow: hidden; border: 8px solid var(--ink);
  box-shadow: 0 0 0 14px var(--paper), 0 0 0 20px var(--verm), 12px 12px 0 20px var(--ink);
  margin: 26px;
}
.hero-moon img { width: 100%; height: 100%; object-fit: cover; }
.hero-copy { margin-bottom: var(--s5); padding: var(--s4) var(--s4) var(--s4); background-color: var(--paper); background-image: var(--grain); border: 5px solid var(--ink); box-shadow: var(--hard); }
.hero-line { font-family: var(--display); font-size: clamp(28px, 3.1vw, 44px); line-height: 1.12; margin: 0 0 var(--s3); }

.seal-box {
  display: inline-flex; flex-wrap: wrap; align-items: center; gap: var(--s2); max-width: 100%;
  background: var(--verm); color: var(--paper); border: 4px solid var(--ink); box-shadow: var(--hard);
  padding: 12px var(--s3);
}
.seal-label { font-family: var(--label); font-weight: 900; font-size: 13px; letter-spacing: .18em; text-transform: uppercase; }
.ca-soon { font-family: var(--display); font-size: 30px; line-height: 1; }
.ca {
  background: var(--paper); color: var(--ink); border: 3px solid var(--ink); padding: 6px 12px;
  font-family: var(--label); font-weight: 900; font-size: 15px; max-width: 100%; overflow-wrap: anywhere; text-align: left;
}
.hanko-row { display: flex; flex-wrap: wrap; gap: var(--s3); margin-top: var(--s4); }
.hanko { display: flex; flex-direction: column; align-items: center; gap: 6px; text-decoration: none; }
.hanko-face {
  display: grid; place-items: center; width: 84px; height: 84px; background: var(--verm); color: var(--paper);
  border: 4px solid var(--ink); outline: 3px solid var(--paper); outline-offset: -11px;
  font-family: var(--display); font-size: 18px; letter-spacing: 0; box-shadow: var(--hard);
  transition: transform .12s steps(2);
}
.hanko-dex .hanko-face { background: var(--indigo); }
.hanko-x .hanko-face { background: var(--ink); border-color: var(--ink); }
.hanko-xmark { font-size: 46px; transform: rotate(-6deg); }
.hanko:hover .hanko-face { transform: translate(3px, 3px) rotate(-3deg); box-shadow: 3px 3px 0 var(--ink); }
.hanko-sub { font-family: var(--label); font-weight: 500; font-size: 13px; }
.hero-chain { font-family: var(--label); font-weight: 500; font-size: 14px; margin: var(--s3) 0 0; color: var(--indigo); }
.waves-hero { grid-column: 1 / -1; margin: 0 calc(-1 * var(--s4)); position: relative; z-index: 1; }

/* ---------- dojo ---------- */
.dojo { background: var(--indigo); color: var(--paper); padding: var(--s5) var(--s4) var(--s6); }
.dojo-head { max-width: 1240px; margin: 0 auto var(--s4); display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: var(--s2); }
.print-title { font-family: var(--display); font-weight: 400; font-size: clamp(30px, 4vw, 54px); line-height: 1.05; margin: 0; }
.dojo-how { margin: 0; max-width: 430px; color: var(--pale); }
.oban {
  max-width: 1240px; margin: 0 auto; display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: var(--s3);
  background: var(--paper); padding: var(--s3); border: 6px solid var(--ink); box-shadow: 10px 10px 0 var(--night);
}
.stage { position: relative; border: 5px solid var(--ink); background: var(--paper-d); aspect-ratio: 8 / 5; overflow: hidden; }
#game { display: block; width: 100%; height: 100%; touch-action: none; cursor: none; }
.stage-cover {
  position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 12px; background: rgba(30, 42, 82, .86); color: var(--paper); text-align: center; padding: var(--s3);
}
.stage-cover[hidden] { display: none; }
.cover-kicker { margin: 0; font-family: var(--label); font-weight: 900; letter-spacing: .2em; text-transform: uppercase; color: var(--gold); font-size: 13px; }
.cover-title { margin: 0; font-family: var(--display); font-size: clamp(30px, 5vw, 60px); line-height: 1; }
.cover-note { margin: 0; font-family: var(--label); font-size: 14px; color: var(--pale); }
.stamp-btn {
  background: var(--verm); color: var(--paper); border: 4px solid var(--ink); box-shadow: var(--hard);
  font-family: var(--display); font-size: 24px; padding: 12px 28px; transition: transform .12s steps(2);
}
.stamp-btn:hover { transform: translate(3px, 3px); box-shadow: 3px 3px 0 var(--ink); }
.toast {
  position: absolute; left: 50%; top: 14px; transform: translateX(-50%); margin: 0; max-width: 90%;
  background: var(--ink); color: var(--paper); font-family: var(--label); font-weight: 900; font-size: 15px;
  padding: 8px 14px; border: 3px solid var(--verm); pointer-events: none; opacity: 0; text-align: center;
}
.toast.show { animation: stamp .14s steps(3) forwards; }
@keyframes stamp { 0% { opacity: 1; transform: translateX(-50%) scale(1.3) rotate(-3deg); } 100% { opacity: 1; transform: translateX(-50%) scale(1) rotate(0); } }

.board { color: var(--ink); display: flex; flex-direction: column; border: 4px solid var(--ink); background: var(--paper); }
.board-title { margin: 0; background: var(--ink); color: var(--paper); font-family: var(--display); font-size: 22px; padding: 10px var(--s2); }
.board-row { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; padding: 10px var(--s2); border-bottom: 2px solid var(--ink); }
.board-label { font-family: var(--label); font-weight: 500; font-size: 14px; text-transform: uppercase; letter-spacing: .06em; }
.board-num { font-family: var(--display); font-size: 40px; line-height: 1; }
.board-num-red { color: var(--verm); }
.board-num.bump, .board-small.bump { animation: bump .14s steps(3); }
@keyframes bump { 0% { transform: scale(1.35) rotate(-4deg); } 100% { transform: scale(1); } }
.board-num, .board-small { display: inline-block; }
.board-row-small { padding: 7px var(--s2); }
.board-small { font-family: var(--label); font-weight: 900; font-size: 15px; text-align: right; }
.board-quote { margin: 0; padding: var(--s2); font-size: 16px; line-height: 1.4; flex: 1; background: var(--paper-d); min-height: 96px; }
.noscript { text-align: center; color: var(--paper); }

/* ---------- hanging scrolls ---------- */
.scrolls {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--s4); align-items: start;
  max-width: 1240px; margin: 0 auto; padding: var(--s6) var(--s4);
}
.scroll:nth-child(2) { margin-top: var(--s5); }
.rod {
  height: 22px; margin: 0 -18px; background: var(--ink); border-radius: 11px; position: relative;
}
.rod::before, .rod::after { content: ''; position: absolute; top: 3px; width: 16px; height: 16px; border-radius: 50%; background: var(--gold); }
.rod::before { left: 3px; } .rod::after { right: 3px; }
.scroll-paper {
  position: relative; background-color: var(--paper); background-image: var(--grain); border-left: 5px solid var(--ink); border-right: 5px solid var(--ink);
  padding: var(--s4) var(--s3) var(--s5); box-shadow: inset 0 0 0 10px var(--paper-d);
}
.scroll-indigo .scroll-paper { background: var(--indigo); color: var(--paper); box-shadow: inset 0 0 0 10px var(--night); }
.scroll-title { font-family: var(--display); font-weight: 400; font-size: 32px; margin: 0 0 var(--s3); line-height: 1.05; }
.steps, .rules, .belts { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: var(--s2); }
.steps { counter-reset: s; }
.steps li { counter-increment: s; position: relative; padding-left: 54px; min-height: 40px; }
.steps li::before {
  content: counter(s); position: absolute; left: 0; top: 0; display: grid; place-items: center; width: 40px; height: 40px; background: var(--verm); color: var(--paper);
  border: 3px solid var(--ink); font-family: var(--display); font-size: 20px;
}
.steps b, .rules b { font-family: var(--label); font-weight: 900; }
.rules li { padding-left: 26px; position: relative; }
.rules li::before { content: ''; position: absolute; left: 0; top: 10px; width: 12px; height: 12px; background: var(--verm); transform: rotate(45deg); }
.belts li { display: grid; grid-template-columns: 82px 1fr; gap: 12px; padding: 6px 8px; border: 2px solid transparent; }
.belts span { font-family: var(--label); font-weight: 900; font-size: 14px; color: var(--verm); }
.belts li.on { border-color: var(--ink); background: var(--gold); }
.scroll-seal {
  position: absolute; right: 18px; bottom: 16px; width: 56px; height: 56px; display: grid; place-items: center;
  background: var(--verm); color: var(--paper); border: 3px solid var(--ink); font-family: var(--display); font-size: 14px;
  transform: rotate(-8deg);
}

/* ---------- prints wall ---------- */
.prints { background: var(--night); color: var(--paper); padding: var(--s6) var(--s4); }
.prints .print-title, .prints-sub { max-width: 1240px; margin-left: auto; margin-right: auto; }
.prints-sub { color: var(--pale); margin-top: var(--s1); margin-bottom: var(--s5); }
.wall { max-width: 1240px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1.15fr 1fr; gap: var(--s4); align-items: start; }
.print { margin: 0; background: var(--paper); padding: var(--s2) var(--s2) 12px; border: 4px solid var(--ink); box-shadow: 10px 10px 0 #0A0F22; }
.print-a { transform: rotate(-1.5deg); margin-top: var(--s5); }
.print-c { transform: rotate(1.2deg); margin-top: var(--s4); }
.print img { border: 3px solid var(--ink); }
.print figcaption { color: var(--ink); font-size: 15px; margin-top: 10px; }
.print figcaption b { font-family: var(--label); font-weight: 900; color: var(--verm); margin-right: 6px; }

/* ---------- footer ---------- */
.foot { background: var(--indigo); color: var(--paper); }
.waves-foot { --w: var(--night); --c: var(--pale); border-top: 0; }
.foot-inner { max-width: 1240px; margin: 0 auto; padding: var(--s5) var(--s4); display: grid; gap: 12px; }
.foot-name { font-family: var(--display); font-size: 34px; margin: 0; }
.foot-ticker { font-family: var(--label); font-weight: 900; font-size: 16px; color: var(--gold); vertical-align: middle; margin-left: 8px; }
.foot-line { margin: 0; color: var(--pale); }
.foot-links { display: flex; flex-wrap: wrap; gap: var(--s3); font-family: var(--label); font-weight: 900; }
.foot-links a { text-decoration: none; border-bottom: 3px solid var(--verm); }
.foot-small { margin: var(--s2) 0 0; font-size: 14px; color: var(--pale); }

/* ---------- responsive ---------- */
@media (max-width: 1100px) {
  .hero { grid-template-columns: 140px 1fr; }
  .hero-copy { grid-column: 1 / -1; }
  .cartouche-title { font-size: 42px; }
  .woodcut-chart { width: 60vw; opacity: .5; }
  .oban { grid-template-columns: 1fr; }
  .board { display: grid; grid-template-columns: repeat(3, 1fr); }
  .board-title, .board-quote { grid-column: 1 / -1; }
  .board-row { flex-direction: column; align-items: flex-start; gap: 4px; border-right: 2px solid var(--ink); }
  .board-quote { min-height: 0; }
}
@media (max-width: 760px) {
  body { font-size: 17px; }
  .topbar { padding: 10px var(--s2); }
  .topbar-nav { display: none; }
  .hero { grid-template-columns: 1fr; gap: var(--s3); padding: var(--s4) var(--s2) 0; min-height: 0; }
  .cartouche { justify-self: stretch; flex-direction: row; justify-content: center; flex-wrap: wrap; padding: 12px var(--s2); outline-offset: -10px; }
  .cartouche-small { display: none; }
  .cartouche-title { flex-direction: row; gap: 12px; font-size: 40px; }
  .cartouche-title span { writing-mode: horizontal-tb; letter-spacing: 0; }
  .hero-moon { margin: 20px 28px 28px; }
  .woodcut-chart { width: 90vw; top: 6%; height: 50%; opacity: .5; }
  .hero-copy { padding: var(--s3) var(--s2); }
  .fuji { left: 10%; width: 300px; height: 110px; }
  .waves-hero { margin: 0 calc(-1 * var(--s2)); }
  .hanko-row { gap: var(--s2); justify-content: space-between; }
  .hanko-face { width: 72px; height: 72px; font-size: 16px; }
  .hanko-sub { font-size: 12px; text-align: center; max-width: 90px; }
  .dojo, .prints { padding-left: var(--s2); padding-right: var(--s2); }
  .oban { padding: 10px; border-width: 4px; }
  .stage { aspect-ratio: 3 / 4; }
  .board { grid-template-columns: 1fr 1fr; }
  .scrolls { grid-template-columns: 1fr; padding: var(--s5) var(--s3); gap: var(--s5); }
  .scroll:nth-child(2) { margin-top: 0; }
  .wall { grid-template-columns: 1fr; }
  .print-a, .print-c { margin-top: 0; }
  .foot-inner { padding: var(--s4) var(--s2); }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .toast.show { opacity: 1; }
}