:root {
  --bg: #f2efea;
  --panel: #fbfaf8;
  --panel-2: #f0ece6;
  --ink: #262220;
  --ink-2: #6d655e;
  --ink-3: #9c938b;
  --line: #ddd6cd;
  --line-2: #c7bdb1;
  --accent: #b3552f;
  --accent-ink: #fff;
  --danger: #b03a3a;
  --canvas-bg: #e7e2da;
  --floor: #ffffff;
  --wall: #35302c;
  --grid: #d8d2c8;
  --grid-2: #c6bfb2;
  --ok: #2f7d55;
  --shadow: 0 1px 2px rgba(38, 34, 32, .08), 0 6px 18px rgba(38, 34, 32, .07);
  --r: 8px;
  --font: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", "Yu Gothic", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1816;
    --panel: #232019;
    --panel-2: #2c2822;
    --ink: #ece7df;
    --ink-2: #a89f95;
    --ink-3: #7c736a;
    --line: #3a352e;
    --line-2: #4c463d;
    --accent: #d9764c;
    --accent-ink: #1a1816;
    --danger: #d96a6a;
    --canvas-bg: #16140f;
    --floor: #2a2620;
    --wall: #ddd5c8;
    --grid: #2a2620;
    --grid-2: #37322a;
    --ok: #6cc094;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 6px 18px rgba(0, 0, 0, .25);
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  overscroll-behavior: none;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
  display: flex;
  flex-direction: column;
}

/* ---- ヘッダ ---- */

.bar {
  flex: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 12px;
  padding-top: max(8px, env(safe-area-inset-top));
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  z-index: 20;
}

.bar-left, .bar-right { display: flex; align-items: center; gap: 8px; min-width: 0; }

.logo {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .06em;
  white-space: nowrap;
}

.doc-name {
  border: 1px solid transparent;
  background: transparent;
  color: var(--ink);
  font: inherit;
  padding: 4px 8px;
  border-radius: var(--r);
  min-width: 60px;
  max-width: 260px;
  width: 22vw;
}
.doc-name:hover { border-color: var(--line); }
.doc-name:focus { border-color: var(--line-2); background: var(--bg); outline: none; }

.net {
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  color: var(--ink-2);
  white-space: nowrap;
}
.net-live { border-color: var(--ok); color: var(--ok); }
.net-off { border-color: var(--danger); color: var(--danger); }

/* ---- ボタン ---- */

.btn {
  font: inherit;
  font-size: 13px;
  color: var(--ink);
  background: var(--panel-2);
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  padding: 6px 11px;
  cursor: pointer;
  white-space: nowrap;
  transition: background .12s, border-color .12s;
}
.btn:hover { background: var(--bg); }
.btn:active { transform: translateY(1px); }
.btn-sm { font-size: 12px; padding: 5px 9px; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { filter: brightness(1.08); background: var(--accent); }
.btn-danger { color: var(--danger); }
.btn-icon { padding: 6px 9px; }
.btn:disabled { opacity: .45; cursor: default; }

/* ---- レイアウト ---- */

.layout {
  position: relative;
  flex: 1;
  display: flex;
  min-height: 0;
}

.panel {
  flex: none;
  width: 288px;
  background: var(--panel);
  border-right: 1px solid var(--line);
  overflow-y: auto;
  overscroll-behavior: contain;
  padding-bottom: 24px;
  z-index: 10;
}
.panel.is-hidden { display: none; }

.tools {
  display: flex;
  gap: 6px;
  padding: 10px;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: var(--panel);
  z-index: 2;
}
.tool {
  flex: 1;
  font: inherit;
  font-size: 12px;
  padding: 8px 4px;
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  background: var(--panel-2);
  color: var(--ink-2);
  cursor: pointer;
}
.tool.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--panel);
  font-weight: 600;
}

.mode-note {
  margin: 0;
  padding: 8px 12px;
  font-size: 11px;
  line-height: 1.45;
  color: var(--ink-3);
  background: var(--panel-2);
  border-bottom: 1px solid var(--line);
}

.sect {
  padding: 12px 12px 14px;
  border-bottom: 1px solid var(--line);
}
.sect h2 {
  margin: 0 0 9px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--ink-3);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 6px;
}
.count {
  font-size: 10px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0 6px;
  color: var(--ink-2);
}

.row { display: flex; gap: 6px; align-items: flex-end; }
.row.wrap { flex-wrap: wrap; }
.row.right { justify-content: flex-end; }
.row + .row { margin-top: 6px; }

.field { display: flex; flex-direction: column; gap: 3px; min-width: 0; flex: 1; }
.field.wide { width: 100%; }
.field.sm { max-width: 76px; }
.field span { font-size: 10px; color: var(--ink-3); letter-spacing: .04em; }
.field input {
  font: inherit;
  font-size: 13px;
  width: 100%;
  min-width: 0;
  padding: 5px 7px;
  border: 1px solid var(--line-2);
  border-radius: 6px;
  background: var(--bg);
  color: var(--ink);
}
.field input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
.field input:disabled { opacity: .5; cursor: not-allowed; }
.field.is-off span { opacity: .5; }
.field input[type="number"] { -moz-appearance: textfield; appearance: textfield; }
.field input[type="number"]::-webkit-outer-spin-button,
.field input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

.check { display: flex; align-items: center; gap: 5px; font-size: 12px; color: var(--ink-2); cursor: pointer; }
.check input { accent-color: var(--accent); }

.hint { margin: 0 0 8px; font-size: 12px; color: var(--ink-2); }
.meta { margin: 8px 0 0; font-size: 11px; color: var(--ink-3); font-variant-numeric: tabular-nums; }

.presets {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 9px;
}
.preset {
  font: inherit;
  font-size: 11px;
  padding: 4px 8px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  background: var(--panel-2);
  color: var(--ink-2);
  cursor: pointer;
}
.preset:hover { background: var(--bg); color: var(--ink); }

.swatches { display: flex; flex-wrap: wrap; gap: 5px; margin: 8px 0; }
.swatch {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid transparent;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, .12);
  cursor: pointer;
  padding: 0;
}
.swatch.is-active { border-color: var(--ink); }

.list { list-style: none; margin: 0; padding: 0; max-height: 260px; overflow-y: auto; }
.list li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 6px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
}
.list li:hover { background: var(--panel-2); }
.list li.is-sel { background: var(--panel-2); box-shadow: inset 2px 0 0 var(--accent); }
.list li.is-bad { color: var(--danger); }
.list .dot { width: 11px; height: 11px; border-radius: 3px; flex: none; box-shadow: inset 0 0 0 1px rgba(0, 0, 0, .15); }
.list .nm { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.list .sz { font-size: 10px; color: var(--ink-3); font-variant-numeric: tabular-nums; }

.peers { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.peers li {
  display: flex; align-items: center; gap: 5px;
  font-size: 12px; color: var(--ink-2);
  border: 1px solid var(--line); border-radius: 999px; padding: 2px 9px 2px 5px;
}
.peers .dot { width: 9px; height: 9px; border-radius: 50%; }

.panel-foot { padding: 12px; font-size: 12px; color: var(--ink-2); }
.panel-foot summary { cursor: pointer; color: var(--ink-3); }
.panel-foot ul { margin: 8px 0 0; padding-left: 18px; }
.panel-foot li { margin-bottom: 4px; }

/* ---- キャンバス ---- */

.stage { position: relative; flex: 1; min-width: 0; background: var(--canvas-bg); }
#canvas { display: block; width: 100%; height: 100%; touch-action: none; }

.zoombar {
  position: absolute;
  right: 12px;
  bottom: max(12px, env(safe-area-inset-bottom));
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 6px;
  box-shadow: var(--shadow);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}
.zoombar .btn { border: none; background: transparent; }
#zoomLabel { min-width: 46px; text-align: center; color: var(--ink-2); }

.statusline {
  position: absolute;
  left: 12px;
  bottom: max(12px, env(safe-area-inset-bottom));
  font-size: 12px;
  color: var(--ink-2);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 4px 10px;
  box-shadow: var(--shadow);
  font-variant-numeric: tabular-nums;
  pointer-events: none;
  max-width: calc(100% - 160px);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dim-edit {
  position: absolute;
  transform: translate(-50%, -50%);
  width: 84px;
  padding: 3px 6px;
  font: inherit;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  text-align: center;
  color: var(--ink);
  background: var(--panel);
  border: 2px solid var(--accent);
  border-radius: 6px;
  box-shadow: var(--shadow);
  z-index: 15;
}
.dim-edit::-webkit-outer-spin-button,
.dim-edit::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.dim-edit { -moz-appearance: textfield; appearance: textfield; }
.dim-edit:focus { outline: none; }

.panel-toggle { position: absolute; left: 10px; top: 10px; display: none; box-shadow: var(--shadow); }
/* パネルを閉じているときは、画面幅にかかわらず開くボタンを出す */
.panel.is-hidden + .stage .panel-toggle { display: block; }

/* ---- モーダル / トースト ---- */

.modal[hidden] { display: none; }

.modal {
  position: fixed;
  inset: 0;
  background: rgba(20, 17, 15, .45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 60;
  padding: 16px;
}
.modal-box {
  background: var(--panel);
  border-radius: 14px;
  padding: 18px;
  width: min(420px, 100%);
  box-shadow: var(--shadow);
}
.modal-box h3 { margin: 0 0 12px; font-size: 15px; }
.modal-box p { margin: 0 0 10px; font-size: 13px; color: var(--ink-2); }
.share-id {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 26px;
  letter-spacing: .18em;
  text-align: center;
  padding: 12px;
  background: var(--panel-2);
  border-radius: var(--r);
  border: 1px solid var(--line);
  margin-bottom: 10px;
  user-select: all;
}
.share-url {
  width: 100%;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  padding: 8px;
  border: 1px solid var(--line-2);
  border-radius: 6px;
  background: var(--bg);
  color: var(--ink);
  margin-bottom: 10px;
}
.id-input {
  width: 100%;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 22px;
  letter-spacing: .18em;
  text-align: center;
  text-transform: uppercase;
  padding: 10px;
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  background: var(--bg);
  color: var(--ink);
  margin-bottom: 10px;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  background: var(--ink);
  color: var(--panel);
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 13px;
  z-index: 80;
  box-shadow: var(--shadow);
  pointer-events: none;
}

/* ---- 狭い画面 ---- */

@media (max-width: 720px) {
  .panel {
    position: absolute;
    inset: 0 auto 0 0;
    width: min(300px, 88vw);
    box-shadow: var(--shadow);
  }
  .panel-toggle { display: block; }
  .doc-name { display: none; }
  .logo { font-size: 13px; }
  .statusline { max-width: calc(100% - 130px); }
}