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

:root {
  --paper: #f4f2ec;
  --paper-card: #fbfaf5;
  --paper-card-alt: #f0ede5;
  --ink: #1c1c1a;
  --ink-muted: #55544f;
  --ink-soft: #8a8882;
  --ink-ghost: #adaba4;
  --rule: #ccc8bd;
  --rule-soft: #e2ded3;
  --accent: #5a3a22;
  --warn: #8a3a1a;
  --radius: 2px;
  --font-jp: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
}

html {
  font-size: 17px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-jp);
  font-weight: 400;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  background: transparent;
  border: 0;
  padding: 0;
  cursor: pointer;
}

/* ── chrome ── */

.chrome {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
  padding: 0.6rem 1.1rem;
  gap: 1rem;
}

.chrome-brand {
  display: inline-flex;
  align-items: center;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.chrome-brand-jp {
  font-size: 1.05rem;
}

.chrome-nav {
  display: flex;
  gap: 0.2rem;
  overflow-x: auto;
  scrollbar-width: none;
}

.chrome-nav::-webkit-scrollbar {
  display: none;
}

.chrome-nav a {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius);
  color: var(--ink-muted);
  font-size: 0.92rem;
  white-space: nowrap;
  transition: background 120ms ease, color 120ms ease;
}

.chrome-nav a:hover {
  color: var(--ink);
}

.chrome-nav a.is-active {
  color: var(--ink);
  background: var(--paper-card);
  border: 1px solid var(--rule-soft);
}

/* ── app frame ── */

.app {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.4rem 1.1rem 4rem;
}

.app-heading {
  margin: 0 0 0.2rem;
  font-size: 1.55rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.app-sublede {
  margin: 0 0 1.6rem;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  margin-bottom: 1rem;
  color: var(--ink-muted);
  font-size: 0.9rem;
}

.back-link::before {
  content: "←";
  margin-right: 0.4em;
}

.back-link:hover {
  color: var(--ink);
}

/* ── furigana baseline ── */

ruby {
  ruby-align: center;
}

ruby rt {
  font-size: 0.55em;
  font-weight: 400;
  color: var(--ink-soft);
  letter-spacing: 0;
  line-height: 1;
}

/* tappable word */
.word {
  cursor: pointer;
  padding: 0 0.05em;
  border-bottom: 1px dotted var(--ink-ghost);
  transition: background 120ms ease, border-color 120ms ease;
}

.word:hover,
.word:focus-visible {
  background: rgba(90, 58, 34, 0.06);
  border-bottom-color: var(--accent);
  outline: none;
}

.word rt {
  color: var(--accent);
  opacity: 0.8;
}

/* ── shelves ── */

.zone {
  margin: 0 0 2.2rem;
}

.zone-head {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  margin-bottom: 0.8rem;
  padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--rule-soft);
}

.zone-head h2 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 500;
}

.zone-head .zone-gloss {
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.shelf {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.9rem;
}

.item-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 150px;
  padding: 0.9rem 1rem 0.85rem;
  background: var(--paper-card);
  border: 1px solid var(--rule-soft);
  border-radius: var(--radius);
  transition: border-color 120ms ease, transform 120ms ease;
}

.item-card:hover {
  border-color: var(--rule);
  transform: translateY(-1px);
}

.item-card-name {
  margin: 0 0 0.35rem;
  font-size: 1.02rem;
  font-weight: 500;
  line-height: 1.35;
}

.item-card-gloss {
  margin: 0;
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.02em;
}

.item-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-top: 0.7rem;
  padding-top: 0.55rem;
  border-top: 1px dashed var(--rule-soft);
}

.item-card-price {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  letter-spacing: 0.02em;
}

.item-card-weight {
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

/* ── item detail ── */

.item-detail {
  display: grid;
  gap: 1.2rem;
}

.item-header h1 {
  margin: 0 0 0.35rem;
  font-size: 1.6rem;
  font-weight: 500;
  line-height: 1.3;
}

.item-desc-jp {
  margin: 0 0 0.3rem;
  font-size: 1.02rem;
  line-height: 1.7;
}

.item-desc-en {
  margin: 0;
  color: var(--ink-soft);
  font-style: italic;
  font-size: 0.82rem;
  line-height: 1.5;
}

.package {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 840px) {
  .package {
    grid-template-columns: 1fr 1fr;
  }
}

.package-face {
  position: relative;
  padding: 1.1rem 1.2rem 1.2rem;
  background: var(--paper-card);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}

.package-face--back {
  background: var(--paper-card-alt);
}

.face-tag {
  position: absolute;
  top: 0.6rem;
  right: 0.9rem;
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.block {
  margin: 0 0 0.85rem;
}

.block:last-child {
  margin-bottom: 0;
}

/* block: banner */
.block-banner {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  background: var(--accent);
  color: var(--paper);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.block-banner-arg {
  margin-right: 0.5em;
  font-weight: 500;
}

/* block: hero */
.block-hero {
  font-size: 1.3rem;
  font-weight: 500;
  line-height: 1.4;
}

/* block: footer (item) */
.block-footer {
  color: var(--ink-muted);
  font-size: 0.88rem;
}

/* block: section */
.block-section-arg {
  margin: 0 0 0.35rem;
  color: var(--ink-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.block-section-body {
  font-size: 0.95rem;
  line-height: 1.7;
}

/* block: nutrition */
.block-nutrition {
  display: grid;
  gap: 0.15rem;
  padding: 0.6rem 0.75rem;
  background: rgba(0, 0, 0, 0.02);
  border: 1px solid var(--rule-soft);
}

.block-nutrition-caption {
  margin-bottom: 0.35rem;
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.block-nutrition-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.15rem 0;
  font-size: 0.9rem;
  border-bottom: 1px dotted var(--rule-soft);
}

.block-nutrition-row:last-child {
  border-bottom: 0;
}

.block-nutrition-row-right {
  font-family: var(--font-mono);
  color: var(--ink-muted);
}

/* block: fineprint */
.block-fineprint {
  padding-top: 0.6rem;
  border-top: 1px dashed var(--rule-soft);
  color: var(--ink-soft);
  font-size: 0.8rem;
  line-height: 1.6;
}

.block-fineprint p {
  margin: 0 0 0.2rem;
}

.block-fineprint p:last-child {
  margin-bottom: 0;
}

/* ── notices (board) ── */

.board {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}

.notice-card {
  padding: 1rem 1.1rem;
  background: var(--paper-card);
  border: 1px solid var(--rule-soft);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
}

.notice-card--handwritten {
  font-family: "Yu Mincho", "Hiragino Mincho ProN", var(--font-jp);
}

.notice-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
  font-weight: 500;
}

.notice-card-meta {
  margin: 0 0 0.5rem;
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}

.notice-card-body {
  font-size: 0.9rem;
  line-height: 1.65;
}

.notice-card-body p {
  margin: 0 0 0.3rem;
}

/* ── popup (vocab) ── */

.popup-scrim {
  position: fixed;
  inset: 0;
  background: rgba(28, 28, 26, 0.38);
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease;
  z-index: 20;
}

.popup-scrim.is-open {
  opacity: 1;
  pointer-events: auto;
}

.popup {
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -46%);
  width: min(440px, calc(100vw - 1.8rem));
  max-height: calc(100vh - 3rem);
  overflow-y: auto;
  padding: 1.2rem 1.3rem 1.1rem;
  background: var(--paper-card);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.18);
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease, transform 160ms ease;
  z-index: 21;
}

.popup.is-open {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, -50%);
}

.popup-surface {
  margin: 0 0 0.35rem;
  font-size: 1.65rem;
  font-weight: 500;
  line-height: 1.2;
}

.popup-surface rt {
  color: var(--ink-muted);
  font-size: 0.5em;
}

.popup-meta {
  margin: 0 0 0.8rem;
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.popup-meaning {
  margin: 0 0 0.8rem;
  font-size: 1rem;
  line-height: 1.55;
}

.popup-etym,
.popup-korean {
  margin: 0 0 0.7rem;
  padding-top: 0.55rem;
  border-top: 1px dashed var(--rule-soft);
  color: var(--ink-muted);
  font-size: 0.84rem;
  line-height: 1.55;
}

.popup-korean::before {
  content: "韓国語: ";
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-right: 0.2em;
}

.popup-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-top: 1rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--rule-soft);
}

.popup-btn {
  padding: 0.4rem 0.95rem;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  color: var(--ink);
  font-size: 0.88rem;
  transition: background 120ms ease, border-color 120ms ease;
}

.popup-btn:hover {
  background: var(--paper);
  border-color: var(--ink-muted);
}

.popup-btn--primary {
  background: var(--ink);
  color: var(--paper-card);
  border-color: var(--ink);
}

.popup-btn--primary:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--paper-card);
}

.popup-btn--primary.is-saved {
  background: var(--paper-card);
  color: var(--ink-muted);
  border-color: var(--rule);
}

/* ── empty / deadpan states ── */

.empty {
  padding: 2rem 1rem;
  color: var(--ink-muted);
  text-align: center;
  border: 1px dashed var(--rule);
  border-radius: var(--radius);
}

.empty--deadpan {
  font-size: 1rem;
  line-height: 1.7;
}

/* ── chrome nav badge ── */

.chrome-nav-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.4em;
  height: 1.4em;
  margin-left: 0.45em;
  padding: 0 0.35em;
  background: var(--ink);
  color: var(--paper);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  line-height: 1;
}

/* ── item CTA ── */

.item-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.9rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--rule-soft);
}

.item-actions-price {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 1.15rem;
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 120ms ease, border-color 120ms ease, color 120ms ease;
}

.cta:hover {
  background: var(--accent);
  border-color: var(--accent);
}

.cta.is-added {
  background: var(--paper-card);
  color: var(--ink-muted);
  border-color: var(--rule);
}

.cta--primary {
  padding: 0.75rem 1.4rem;
  font-size: 1rem;
}

/* ── register / basket ── */

.basket {
  list-style: none;
  margin: 0 0 1.2rem;
  padding: 0;
  border-top: 1px solid var(--rule-soft);
}

.basket-row {
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  gap: 0.9rem;
  align-items: center;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--rule-soft);
}

.basket-row-name {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.basket-row-jp {
  font-size: 1rem;
  font-weight: 500;
}

.basket-row-en {
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.74rem;
}

.basket-row-price {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--ink-muted);
}

.basket-row-count {
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.basket-row-remove {
  width: 1.9rem;
  height: 1.9rem;
  border: 1px solid var(--rule);
  border-radius: 999px;
  color: var(--ink-muted);
  font-size: 1.1rem;
  line-height: 1;
}

.basket-row-remove:hover {
  background: var(--paper-card);
  color: var(--ink);
  border-color: var(--ink-muted);
}

.basket-total {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.9rem 0;
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--rule);
  margin-bottom: 1rem;
}

.basket-total-label {
  font-size: 1rem;
}

.basket-total-amount {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  letter-spacing: 0.02em;
}

.basket-actions {
  display: flex;
  justify-content: flex-end;
}

/* ── checkout ── */

.checkout {
  max-width: 620px;
  margin: 0 auto;
}

.checkout-transcript {
  display: grid;
  gap: 0.9rem;
  margin-bottom: 1.4rem;
}

.turn {
  max-width: 80%;
  padding: 0.75rem 1rem;
  background: var(--paper-card);
  border: 1px solid var(--rule-soft);
  border-radius: var(--radius);
  line-height: 1.65;
}

.turn p {
  margin: 0;
}

.turn-label {
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.2rem;
}

.turn-clerk {
  align-self: flex-start;
  margin-right: auto;
  border-left: 3px solid var(--accent);
}

.turn-player {
  margin-left: auto;
  background: var(--ink);
  color: var(--paper-card);
  border-color: var(--ink);
  text-align: right;
}

.turn-player .turn-label {
  color: var(--ink-ghost);
}

.turn-action {
  align-self: center;
  max-width: 100%;
  background: transparent;
  border: 0;
  border-top: 1px dashed var(--rule);
  border-bottom: 1px dashed var(--rule);
  border-radius: 0;
  padding: 0.4rem 0;
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-align: center;
}

.turn-exit {
  align-self: center;
  max-width: 100%;
  background: transparent;
  border: 0;
  font-size: 1.05rem;
  color: var(--ink-muted);
  text-align: center;
  padding-top: 1.5rem;
  padding-bottom: 0.5rem;
}

.checkout-prompt {
  display: flex;
  justify-content: center;
  padding: 0.5rem 0 2rem;
}

.tap-continue {
  padding: 0.6rem 1.2rem;
  background: transparent;
  border: 1px dashed var(--ink-muted);
  border-radius: var(--radius);
  color: var(--ink-muted);
  font-size: 0.9rem;
  transition: color 120ms ease, border-color 120ms ease;
}

.tap-continue:hover {
  color: var(--ink);
  border-color: var(--ink);
}

.choices {
  display: grid;
  gap: 0.55rem;
  width: 100%;
  max-width: 480px;
}

.choice {
  display: flex;
  gap: 0.75rem;
  align-items: baseline;
  padding: 0.75rem 1rem;
  background: var(--paper-card);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  text-align: left;
  line-height: 1.55;
  cursor: pointer;
  transition: background 120ms ease, border-color 120ms ease;
}

.choice:hover {
  background: var(--paper);
  border-color: var(--ink-muted);
}

.choice-label {
  min-width: 1.25em;
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.choice-text {
  font-size: 0.98rem;
}

/* ── small screens ── */

@media (max-width: 520px) {
  html {
    font-size: 16px;
  }
  .app {
    padding: 1rem 0.85rem 3rem;
  }
  .chrome {
    padding: 0.55rem 0.85rem;
  }
  .shelf {
    grid-template-columns: 1fr;
  }
}