/* Kinari — second MUJI reading: unbleached stock, not a margin.
   Yohaku treated emptiness as space around the thought.
   This sheet treats emptiness as the undyed fibre itself. */

:root {
  --ground: #E7E2D2;
  --ink: #2B2923;
  --mute: #7A766A;
  --hair: #D0CBB8;
  --mark: #C8161D;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 32px;
  --space-4: 48px;
  --space-5: 96px;
  --space-6: 160px;
  --space-7: 240px;
  --sheet: 560px;
  --ease: ease;
  --fade: 800ms var(--ease);
}

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

html {
  background: var(--ground);
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--ground);
  color: var(--ink);
  font-family: "Source Serif 4", "Noto Serif JP", "Times New Roman", serif;
  font-weight: 400;
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0.012em;
  font-optical-sizing: auto;
  text-wrap: pretty;
}

::selection {
  background: var(--ink);
  color: var(--ground);
}

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

button,
textarea,
input {
  font: inherit;
  letter-spacing: inherit;
  color: inherit;
}

button {
  cursor: pointer;
}

/* ── Folio line ── */

.folio-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 24px;
  padding: 32px 80px 0;
  background: transparent;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.folio-nav a {
  color: var(--mute);
  padding: 8px 0;
  border-bottom: 1px solid transparent;
  transition: color var(--fade), border-color var(--fade);
}

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

.folio-nav a[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

/* ── Desk: the thought sits late, in the right-hand third ── */

.desk {
  display: grid;
  grid-template-columns: minmax(48px, 1fr) min(var(--sheet), calc(100% - 96px)) minmax(48px, 0.4fr);
  column-gap: 48px;
  align-items: start;
  width: 100%;
  padding: 160px 48px 240px;
}

.spine {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-self: end;
  width: 56px;
  padding-top: 200px;
  flex-shrink: 0;
}

.spine-lot {
  margin: 0 0 32px;
  writing-mode: vertical-rl;
  font-size: 10px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--mute);
}

.spine-word {
  margin: 0;
  writing-mode: vertical-rl;
  font-family: "Noto Serif JP", serif;
  font-size: 14px;
  letter-spacing: 0.55em;
  color: var(--ink);
}

.spine-sku {
  margin: 48px 0 0;
  writing-mode: vertical-rl;
  font-size: 10px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--mute);
}

.sheet {
  position: relative;
  width: 100%;
  padding: 0;
}

/* ── Registration crosses, not L-brackets. Red only as the key plate. ── */

.crop {
  position: absolute;
  width: 16px;
  height: 16px;
  pointer-events: none;
}

.crop::before,
.crop::after {
  content: "";
  position: absolute;
  background: var(--hair);
}

.crop::before {
  top: 7px;
  left: 0;
  width: 16px;
  height: 1px;
}

.crop::after {
  top: 0;
  left: 7px;
  width: 1px;
  height: 16px;
}

.crop-tl { top: -8px; left: -28px; }
.crop-tr { top: -8px; right: -28px; }
.crop-bl { bottom: -8px; left: -28px; }
.crop-br { bottom: -8px; right: -28px; }

.register {
  position: absolute;
  top: 6px;
  left: 6px;
  width: 4px;
  height: 4px;
  background: var(--mark);
}

.fold {
  position: absolute;
  width: 10px;
  height: 1px;
  background: var(--hair);
  pointer-events: none;
}

.fold-l { top: 50%; left: -28px; }
.fold-r { top: 50%; right: -28px; }

/* ── Mast: the eye arrives in the middle of the sheet ── */

.mast {
  padding: 200px 0 96px;
}

.sheet-index {
  margin: 0 0 32px;
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mute);
}

h1 {
  margin: 0;
  font-size: 28px;
  font-weight: 400;
  letter-spacing: 0.22em;
  line-height: 1.2;
  text-transform: uppercase;
}

.word-jp {
  margin: 8px 0 0;
  font-family: "Noto Serif JP", serif;
  font-size: 13px;
  letter-spacing: 0.42em;
  color: var(--mute);
}

.lede {
  margin: 48px 0 0;
  max-width: 36ch;
  color: var(--mute);
  font-size: 16px;
  line-height: 1.85;
}

.mast-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 16px 32px;
  margin-top: 96px;
  padding-top: 16px;
  border-top: 1px solid var(--hair);
}

.badge,
#statusBadge {
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mute);
}

.mast-meta .text-btn {
  margin-left: auto;
}

/* ── Bands: 01 — Cotton, never a shout ── */

.band {
  padding: 96px 0 0;
  border-top: 1px solid var(--hair);
}

.band-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
  margin-bottom: 32px;
}

.num {
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--mute);
}

.band-name,
.section-kicker,
.section-label span {
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink);
}

.meta,
#historyLinkStatus,
#safetyIndicator {
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mute);
}

#historyLinkStatus {
  margin-left: auto;
}

.aside {
  margin: 0 0 48px;
  color: var(--mute);
  font-size: 14px;
  letter-spacing: 0.01em;
}

/* ── Catalog: linen ledger ── */

.catalog {
  list-style: none;
  margin: 0 0 96px;
  padding: 0;
}

.catalog li + li {
  border-top: 1px solid var(--hair);
}

.catalog-item {
  display: grid;
  grid-template-columns: 64px 1fr auto;
  align-items: baseline;
  gap: 16px;
  width: 100%;
  padding: 16px 0;
  border: 0;
  background: none;
  text-align: left;
  transition: color var(--fade);
}

.catalog-item:hover,
.catalog-item:focus-visible {
  color: var(--ink);
  outline: none;
}

.sku {
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mute);
}

.catalog-name {
  font-size: 16px;
  letter-spacing: 0.01em;
}

.cut {
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mute);
}

/* ── Field ── */

.field-label {
  display: block;
  margin-bottom: 8px;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mute);
}

textarea#thoughtInput {
  display: block;
  width: 100%;
  min-height: 168px;
  margin: 0;
  padding: 8px 0 16px;
  border: 0;
  border-bottom: 1px solid var(--hair);
  border-radius: 2px;
  background: transparent;
  color: var(--ink);
  resize: vertical;
  outline: none;
  transition: border-color var(--fade);
}

textarea#thoughtInput::placeholder {
  color: var(--mute);
}

textarea#thoughtInput:focus {
  border-bottom-color: var(--ink);
}

.compose-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 16px;
  margin-top: 32px;
}

.hint {
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mute);
}

/* ── Controls: hairline only ── */

.btn-primary,
.btn-ghost,
.btn-ctrl,
.btn-audio,
.drawer-head button,
.drawer-footer button {
  appearance: none;
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--hair);
  border-radius: 0;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.04em;
  box-shadow: none;
  transition: color var(--fade), border-color var(--fade);
}

.btn-primary {
  border-color: var(--ink);
}

.text-btn {
  appearance: none;
  background: none;
  border: 0;
  border-bottom: 1px solid transparent;
  border-radius: 0;
  padding: 8px 0;
  font-size: 14px;
  letter-spacing: 0.04em;
  box-shadow: none;
  transition: border-color var(--fade);
}

.text-btn:hover,
.text-btn:focus-visible {
  border-bottom-color: var(--ink);
  outline: none;
}

.btn-primary:hover,
.btn-ctrl:hover,
.btn-audio:hover,
.drawer-head button:hover,
.drawer-footer button:hover {
  border-color: var(--ink);
}

.btn-primary:disabled,
.btn-primary.is-busy {
  color: var(--mute);
  border-color: var(--hair);
  cursor: wait;
}

.btn-primary:focus-visible,
.btn-ctrl:focus-visible,
.filter-btn:focus-visible,
.btn-audio:focus-visible,
.catalog-item:focus-visible,
textarea:focus-visible,
.folio-nav a:focus-visible {
  outline: 1px solid var(--ink);
  outline-offset: 2px;
}

/* ── Pipeline: hidden until JS ── */

#pipelineProgress,
.pipeline-progress {
  display: none;
  align-items: center;
  gap: 16px;
  margin-top: 16px;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mute);
}

#pipelineProgress[style*="flex"] {
  display: flex;
}

/* ── Safety: a note in the grain ── */

#safetyBanner,
.safety-banner {
  display: none;
  padding: 16px 0;
  margin: 0;
  border-top: 1px solid var(--hair);
  border-bottom: 1px solid var(--hair);
  background: transparent;
  color: var(--ink);
  font-size: 15px;
  box-shadow: none;
}

.safety-banner.caution {
  display: flex;
}

.safety-banner.safe-badge {
  display: inline;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mute);
  font-weight: 400;
}

.safety-alert {
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

#safetyIndicator {
  min-height: 0;
}

/* ── The grain ── */

.field-toolbar {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 32px;
}

.canvas-filters,
.canvas-controls,
.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.filter-btn {
  padding: 8px 0;
  border: 0;
  border-bottom: 1px solid transparent;
  background: none;
  color: var(--mute);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.filter-btn:hover {
  color: var(--ink);
}

.filter-btn.active {
  color: var(--ink);
  background: none;
  border-bottom-color: var(--ink);
}

.btn-ctrl {
  min-width: 32px;
  padding: 8px;
  text-align: center;
}

#canvasWrapper,
.canvas-wrapper {
  position: relative;
  width: 100%;
  min-height: 420px;
  height: 48vh;
  overflow: hidden;
  border: 0;
  border-top: 1px solid var(--hair);
  border-bottom: 1px solid var(--hair);
  background: var(--ground);
  border-radius: 0;
  box-shadow: none;
}

#graphCanvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
}

#canvasTooltip,
.canvas-tooltip {
  display: none;
  position: absolute;
  z-index: 20;
  max-width: 260px;
  padding: 16px;
  pointer-events: none;
  background: var(--ground);
  color: var(--ink);
  border: 1px solid var(--hair);
  border-radius: 0;
  box-shadow: none;
}

#tooltipTitle {
  font-size: 15px;
  letter-spacing: 0.01em;
}

#tooltipTitle .tooltip-mark {
  margin-right: 8px;
  color: var(--mute);
}

#tooltipMeta {
  margin-top: 8px;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mute);
}

#tooltipSnippet {
  margin-top: 8px;
  color: var(--mute);
  font-size: 15px;
}

#graphHud,
.graph-hud {
  position: absolute;
  right: 0;
  top: 16px;
  left: auto;
  bottom: auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 16px;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mute);
  pointer-events: none;
}

/* ── Crease / wrong side ── */

.card {
  background: none;
  border-radius: 0;
  box-shadow: none;
}

.card-body {
  margin: 0 0 32px;
  min-height: 96px;
  color: var(--ink);
}

.placeholder-text {
  color: var(--mute);
}

.btn-audio {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-audio.loading,
.btn-audio.playing {
  border-color: var(--ink);
}

#audioBtnIcon {
  font-size: 11px;
  letter-spacing: 0;
  color: var(--mute);
}

/* ── History as a shelf pulled from the left ── */

#historyBackdrop,
.history-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: color-mix(in srgb, var(--ink) 8%, transparent);
  z-index: 90;
}

#historyBackdrop.open,
.history-backdrop.open {
  display: block;
  animation: fade-in 800ms var(--ease);
}

#historyDrawer,
.history-drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: min(320px, calc(100% - 32px));
  margin-left: 0;
  height: 100vh;
  max-height: 100vh;
  z-index: 95;
  display: flex;
  flex-direction: column;
  background: var(--ground);
  border: 0;
  border-right: 1px solid var(--hair);
  box-shadow: none;
  transform: translateX(-12px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 800ms var(--ease), visibility 800ms var(--ease), transform 800ms var(--ease);
}

#historyDrawer.open,
.history-drawer.open {
  transform: none;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.history-drawer .crop-tr { top: 16px; right: -8px; }
.history-drawer .crop-br { bottom: 16px; right: -8px; }

.drawer-head,
.drawer-footer {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px 16px;
  padding: 48px 32px 16px;
}

.drawer-head {
  border-bottom: 1px solid var(--hair);
}

.slip-kicker {
  flex: 1 0 100%;
  margin: 0 0 8px;
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--mute);
}

.drawer-head strong {
  font-size: 15px;
  font-weight: 400;
  letter-spacing: 0.06em;
}

.drawer-footer {
  border-top: 1px solid var(--hair);
  padding: 16px 32px 48px;
}

.drawer-head button,
.drawer-footer button {
  border: 0;
  border-bottom: 1px solid transparent;
  padding: 8px 0;
}

.drawer-head button:hover,
.drawer-footer button:hover {
  border-bottom-color: var(--ink);
}

#drawerList,
.drawer-list {
  flex: 1;
  overflow: auto;
  padding: 0 32px;
}

.history-empty {
  padding: 48px 0;
  color: var(--mute);
  font-size: 15px;
}

.history-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--hair);
  cursor: pointer;
  transition: opacity var(--fade);
}

.history-item:hover {
  opacity: 0.65;
}

.history-item-top {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mute);
}

.history-item-preview {
  margin-top: 8px;
  font-size: 15px;
}

.history-item-del {
  border: 0;
  background: transparent;
  color: var(--mute);
  cursor: pointer;
  padding: 0 0 0 8px;
}

/* ── Colophon ── */

.colophon {
  width: min(var(--sheet), calc(100% - 96px));
  margin: 0 0 0 auto;
  margin-right: max(48px, calc((100% - var(--sheet)) * 0.286));
  padding: 0 0 96px;
  border-top: 1px solid var(--hair);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mute);
}

.colophon p {
  margin: 16px 0 0;
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 880px) {
  .desk {
    grid-template-columns: 1fr;
    padding: 64px 24px 160px;
    row-gap: 32px;
  }

  .spine {
    flex-direction: row;
    align-items: center;
    justify-self: start;
    width: 100%;
    padding: 0;
    gap: 20px;
  }

  .spine-lot,
  .spine-word,
  .spine-sku {
    writing-mode: horizontal-tb;
    letter-spacing: 0.18em;
    margin: 0;
  }

  .sheet {
    padding-top: 16px;
  }

  .crop-tl,
  .crop-bl { left: 0; }

  .crop-tr,
  .crop-br { right: 0; }

  .fold-l { left: 0; }
  .fold-r { right: 0; }

  .mast {
    padding: 96px 0 48px;
  }

  h1 {
    font-size: 24px;
  }

  .band {
    padding-top: 48px;
  }

  .mast-meta .text-btn {
    margin-left: 0;
  }

  .folio-nav {
    justify-content: flex-start;
    padding: 24px 24px 0;
  }

  .colophon {
    width: calc(100% - 48px);
    margin: 0 auto;
  }

  .catalog-item {
    grid-template-columns: 56px 1fr;
  }

  .cut {
    display: none;
  }
}