:root {
  --bg: #f6f6f4;
  --panel: #ffffff;
  --ink: #1a1d1e;
  --ink-soft: #5b6265;
  --line: #dcdcd7;
  --accent: #3b7a85;
  --accent-soft: #e4eeef;
  --warn: #b5533c;
  --caution: #a3781f;
  --caution-soft: #f5ecd8;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover, a:focus-visible { text-decoration: underline; }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.wrap {
  max-width: 640px;
  margin: 0 auto;
  padding: 20px 16px 64px;
}

header.top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 6px;
}

header.top h1 {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
}

header.top .back {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-soft);
}

/* signature element: a hairline EEG-trace divider */
.trace {
  width: 100%;
  height: 20px;
  margin: 10px 0 20px;
  display: block;
}
.trace path {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.4;
  opacity: 0.55;
}

input[type="search"] {
  width: 100%;
  padding: 10px 12px;
  font-family: var(--sans);
  font-size: 15px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  color: var(--ink);
}

.chips {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin: 12px 0 4px;
}

.chip {
  font-family: var(--mono);
  font-size: 12px;
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--ink-soft);
  cursor: pointer;
}

.chip.active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}

.group-label {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  margin: 24px 0 8px;
}

.card-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.item-card {
  display: block;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 14px;
  color: var(--ink);
}

.item-card:hover, .item-card:focus-visible {
  border-color: var(--accent);
  text-decoration: none;
}

.item-card .name {
  font-weight: 600;
  font-size: 15px;
}

.item-card .meta {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-soft);
  margin-top: 4px;
}

.empty {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-soft);
  padding: 24px 0;
}

/* item detail page */
.detail-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 20px;
}

.detail-panel h2 {
  margin: 0 0 4px;
  font-size: 20px;
}

.field-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}
.field-row:last-child { border-bottom: none; }

.field-row .label {
  color: var(--ink-soft);
}

.field-row .value {
  font-family: var(--mono);
  text-align: right;
}

.tag-list {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.tag {
  font-family: var(--mono);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
}

.actions {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 16px;
  border-radius: 8px;
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 600;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: white;
  cursor: pointer;
}

.btn.secondary {
  background: var(--panel);
  color: var(--accent);
}

.btn.warn {
  border-color: var(--warn);
  background: var(--panel);
  color: var(--warn);
}

.btn.caution {
  border-color: var(--caution);
  background: var(--panel);
  color: var(--caution);
}

.checkout-row {
  display: flex;
  gap: 8px;
}

.checkout-row input[type="number"] {
  width: 72px;
  padding: 10px;
  font-family: var(--mono);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.status-msg {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-soft);
  margin-top: 8px;
}

/* room map */
.location-value {
  cursor: pointer;
  color: var(--accent);
  text-decoration: underline dotted;
  text-underline-offset: 2px;
}

.room-map-wrap {
  margin-top: 10px;
  display: none;
}

.room-map-wrap.open {
  display: block;
}

.room-svg {
  width: 100%;
  height: auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.room-outline {
  fill: var(--bg);
  stroke: var(--line);
  stroke-width: 2;
}

.location-zone rect {
  fill: var(--panel);
  stroke: var(--line);
  stroke-width: 1.5;
  transition: fill 0.15s;
}

.location-zone text {
  font-family: var(--mono);
  font-size: 14px;
  fill: var(--ink-soft);
  pointer-events: none;
}

.location-zone.highlight rect {
  fill: var(--accent);
  stroke: var(--accent);
}

.location-zone.highlight text {
  fill: white;
  font-weight: 600;
}

.map-fallback-msg {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-soft);
  padding: 10px 0;
}