:root {
  color-scheme: light;
  --page: #888;
  --board: #fff;
  --chrome: rgba(255,255,255,.92);
  --chrome-fg: #111;
  --brand-bg: rgba(17,17,24,.85);
  --brand-fg: #fff;
  --bar: rgba(255,255,255,.94);
  --seg: #f0f0f4;
  --btn: #fff;
  --btn-fg: #111;
  --hint: #666;
  --toast: rgba(20,20,28,.92);
  --toast-fg: #fff;
  --border: rgba(0,0,0,.12);
  --chip: #ffe082;
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0b0b0f;
  --board: #15151b;
  --chrome: rgba(26,26,34,.92);
  --chrome-fg: #f0f0f2;
  --brand-bg: rgba(240,240,245,.92);
  --brand-fg: #111;
  --bar: rgba(22,22,30,.94);
  --seg: #2c2c38;
  --btn: #3a3a48;
  --btn-fg: #f0f0f2;
  --hint: #a2a2b4;
  --toast: rgba(240,240,245,.94);
  --toast-fg: #111;
  --border: rgba(255,255,255,.16);
  --chip: #8a6d00;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; overflow: hidden; overscroll-behavior: none; background: var(--page); font-family: system-ui, "Hiragino Kaku Gothic ProN", Meiryo, sans-serif; color: var(--chrome-fg); -webkit-touch-callout: none; }
#board { position: fixed; inset: 0; width: 100vw; height: 100vh; width: 100dvw; height: 100dvh; display: block; touch-action: none; cursor: crosshair; background: var(--board); user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; -webkit-tap-highlight-color: transparent; }
button, select, input { touch-action: manipulation; }
#topbar, #toolbar, #profileBar, #settingsPanel, #userPanel, #historyPanel, #accountPanel, #colorPanel, #toast-wrap, #undoBtn { user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; }
#profileBar input, #accountPanel input, #adminPanel input, #colorPanel input, .accCode { user-select: text; -webkit-user-select: text; -webkit-touch-callout: default; }

#topbar {
  position: fixed; top: 10px; left: 10px; right: 10px;
  display: flex; gap: 8px; align-items: center; pointer-events: none; flex-wrap: wrap;
}
#topbar > * { pointer-events: auto; }
.brand {
  background: var(--brand-bg); color: var(--brand-fg); font-weight: 700;
  padding: 8px 12px; border-radius: 999px; font-size: 14px;
  display: flex; align-items: center; gap: 6px;
}
.brand .bi { font-size: 15px; }
.pill {
  background: var(--chrome); color: var(--chrome-fg); border: 1px solid var(--border);
  padding: 7px 12px; border-radius: 999px; font-size: 13px;
  box-shadow: 0 2px 10px rgba(0,0,0,.15);
}
a.pill { text-decoration: none; display: inline-flex; align-items: center; }
button.pill.clickable { cursor: pointer; font: inherit; }
.pill.cool { background: #222; color: #ffd54a; border-color: #000; }
:root[data-theme="dark"] .pill.cool { background: #000; }

#settingsPanel {
  position: fixed; top: 56px; right: 10px; z-index: 25;
  display: flex; flex-direction: column; gap: 8px;
  background: var(--chrome); color: var(--chrome-fg);
  border: 1px solid var(--border); border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,.25); padding: 10px 12px;
}
#settingsPanel.hidden { display: none; }
.setRow { display: flex; gap: 8px; align-items: center; font-size: 13px; cursor: pointer; user-select: none; }
.setRow select {
  background: var(--btn); color: var(--btn-fg);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 4px 6px; font-size: 13px;
}

#profileBar {
  position: fixed; top: 56px; left: 10px;
  display: flex; gap: 6px; align-items: center;
  background: var(--chrome); color: var(--chrome-fg); border: 1px solid var(--border);
  border-radius: 999px; padding: 5px 8px 5px 12px;
  box-shadow: 0 2px 10px rgba(0,0,0,.15);
}
#profileName {
  border: none; outline: none; background: transparent; color: inherit;
  font-size: 13px; width: 110px;
}
#profileColorBtn {
  border: 1px solid var(--border); background: var(--btn); border-radius: 999px;
  padding: 3px; cursor: pointer; display: inline-flex;
}
#profileColorChip { width: 26px; height: 20px; border-radius: 999px; display: block; }
#profileSave {
  border: none; background: #111; color: #fff; border-radius: 999px;
  padding: 5px 12px; font-size: 12px; cursor: pointer;
}
:root[data-theme="dark"] #profileSave { background: #f0f0f2; color: #111; }
#myUid { font-size: 12px; color: var(--hint); }

#userPanel {
  position: fixed; top: 56px; right: 10px; z-index: 25;
  min-width: 190px; max-width: 250px; max-height: 44vh; overflow: auto;
  background: var(--chrome); color: var(--chrome-fg);
  border: 1px solid var(--border); border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,.25); padding: 8px 10px;
}
#userPanel.hidden, #historyPanel.hidden { display: none; }
.panelTitle {
  font-size: 12px; color: var(--hint); margin: 2px 2px 6px;
  display: flex; justify-content: space-between; align-items: center; gap: 8px;
}
#userList, #historyList { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; font-size: 13px; }
#userList li, #historyList li { display: flex; align-items: center; gap: 8px; }
#userList .dot, .hwho .dot { width: 12px; height: 12px; border-radius: 50%; border: 1px solid var(--border); flex: none; display: inline-block; }
#userList .uname { flex: 1; min-width: 0; overflow: hidden; display: flex; align-items: center; gap: 4px; }
#userList .uname .nname, #historyList .hwho .nname { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#userList .uname .nmeta, #historyList .hwho .nmeta { flex: none; color: var(--hint); font-size: 12px; }
.flag { width: 18px; height: auto; border-radius: 3px; flex: none; vertical-align: middle; }
.flagFallback { font-size: 11px; font-weight: 700; color: var(--hint); border: 1px solid var(--border); border-radius: 3px; padding: 0 3px; flex: none; }
.hwho .flag { width: 16px; }
.selfTag { font-size: 11px; color: var(--hint); }
.blockBtn {
  border: 1px solid var(--border); background: var(--btn); color: var(--btn-fg);
  border-radius: 8px; padding: 3px 8px; font-size: 11px; cursor: pointer; flex: none;
}
#historyClose, #accountClose, #adminClose, #colorClose, #settingsClose { border: 1px solid var(--border); background: var(--btn); color: var(--btn-fg); border-radius: 8px; padding: 2px 8px; cursor: pointer; }

#undoBtn {
  position: fixed; right: 10px; bottom: 178px; z-index: 25;
  background: var(--chrome); color: var(--chrome-fg);
  border: 1px solid var(--border); border-radius: 999px;
  padding: 8px 14px; font-size: 13px; cursor: pointer;
  box-shadow: 0 4px 20px rgba(0,0,0,.25);
}
#undoBtn.hidden { display: none; }

#colorPanel {
  position: fixed; left: 50%; bottom: 178px; transform: translateX(-50%); z-index: 25;
  width: min(340px, calc(100vw - 20px)); max-height: calc(100vh - 220px); overflow-y: auto;
  background: var(--chrome); color: var(--chrome-fg);
  border: 1px solid var(--border); border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,.25); padding: 8px 10px;
  display: flex; flex-direction: column; gap: 8px;
}
#colorPanel.hidden { display: none; }
.cpTop { display: flex; gap: 8px; }
#cpSv { flex: 1; min-width: 0; height: 190px; border-radius: 8px; border: 1px solid var(--border); touch-action: none; cursor: crosshair; }
#cpHueBar { width: 28px; flex: none; height: 190px; border-radius: 8px; border: 1px solid var(--border); touch-action: none; cursor: ns-resize; }
.cpTabs { justify-content: center; }
.cpSliders { display: flex; flex-direction: column; gap: 6px; }
.cpSliders.hidden { display: none; }
.cpRow { display: grid; grid-template-columns: 3em 3.4em 1fr; gap: 6px; align-items: center; font-size: 12px; color: var(--chrome-fg); }
.cpRow > span { color: var(--hint); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cpRow input[type="number"] {
  background: var(--btn); color: var(--btn-fg);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 5px 6px; font-size: 12px; width: 100%; min-width: 0;
}
.cpRow input[type="range"] {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 18px; border-radius: 6px;
  border: 1px solid var(--border); background: #888;
  padding: 0; margin: 0; cursor: pointer;
}
.cpRow input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 12px; height: 22px; border-radius: 4px;
  background: #fff; border: 2px solid rgba(0,0,0,.55);
  box-shadow: 0 0 0 1px rgba(255,255,255,.7);
}
.cpRow input[type="range"]::-moz-range-thumb {
  width: 10px; height: 20px; border-radius: 4px;
  background: #fff; border: 2px solid rgba(0,0,0,.55);
  box-shadow: 0 0 0 1px rgba(255,255,255,.7);
}
.cpCodeRow { display: flex; gap: 6px; align-items: center; justify-content: flex-end; font-size: 12px; color: var(--hint); }
.cpCodeRow .cpHash { color: var(--chrome-fg); }
#cpHex {
  background: var(--btn); color: var(--btn-fg);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 5px 8px; font-size: 12px; width: 90px;
}
.cpPalTitle { font-size: 12px; color: var(--hint); margin: 0 2px; }
#cpBasicGrid, #cpRecentGrid { display: grid; grid-template-columns: repeat(10, 1fr); gap: 3px; }
#cpBasicGrid button, #cpRecentGrid button {
  aspect-ratio: 1; border-radius: 5px; border: 1px solid rgba(0,0,0,.25);
  padding: 0; cursor: pointer;
}
.cpRecentEmpty { font-size: 12px; color: var(--hint); margin: 0 2px 4px; }
.cpRecentEmpty.hidden { display: none; }
.cpFoot { display: flex; gap: 8px; align-items: center; justify-content: flex-end; }
#cpPreview { width: 34px; height: 26px; border-radius: 7px; border: 1px solid var(--border); }
#cpOk {
  border: none; background: #111; color: #fff; border-radius: 9px;
  padding: 7px 16px; font-size: 13px; cursor: pointer;
}
:root[data-theme="dark"] #cpOk { background: #f0f0f2; color: #111; }

#accountPanel {
  position: fixed; top: 110px; left: 10px; z-index: 25;
  width: min(280px, calc(100vw - 20px));
  background: var(--chrome); color: var(--chrome-fg);
  border: 1px solid var(--border); border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,.25); padding: 8px 10px;
}
#accountPanel.hidden { display: none; }
#adminBtn.hidden { display: none; }
#adminPanel {
  position: fixed; top: 110px; left: 10px; z-index: 25;
  width: min(280px, calc(100vw - 20px));
  background: var(--chrome); color: var(--chrome-fg);
  border: 1px solid var(--border); border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,.25); padding: 8px 10px;
}
#adminPanel.hidden { display: none; }
#adminResult { overflow-wrap: anywhere; min-height: 1em; }
.accSection { display: flex; flex-direction: column; gap: 6px; padding: 8px 0; border-top: 1px solid var(--border); }
.accSection:first-of-type { border-top: none; }
.accLabel { font-size: 12px; color: var(--hint); }
#accountPanel .setRow { white-space: nowrap; }
#accountPanel .setRow span { white-space: nowrap; flex: none; }
.accSection input {
  background: var(--btn); color: var(--btn-fg);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 6px 8px; font-size: 13px; width: 100%;
}
.accSection input[type="checkbox"] {
  width: auto; flex: none; padding: 0; margin: 0;
}
.accSection button {
  border: 1px solid var(--border); background: var(--btn); color: var(--btn-fg);
  border-radius: 8px; padding: 6px 8px; font-size: 13px; cursor: pointer;
}
.accCode {
  font-size: 18px; font-weight: 700; letter-spacing: 2px; text-align: center;
  background: var(--seg); border-radius: 8px; padding: 8px; user-select: all;
}
.accCode.hidden { display: none; }

#historyPanel {
  position: fixed; top: 110px; right: 10px; z-index: 25;
  width: min(300px, calc(100vw - 20px)); max-height: 50vh; overflow: auto;
  background: var(--chrome); color: var(--chrome-fg);
  border: 1px solid var(--border); border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,.25); padding: 8px 10px;
}
#historyList .chip {
  width: 22px; height: 22px; border-radius: 6px; flex: none;
  border: 1px solid var(--border); display: inline-flex;
  align-items: center; justify-content: center; font-size: 13px;
}
#historyList .hmain { flex: 1; display: flex; flex-direction: column; gap: 1px; min-width: 0; }
#historyList .hwho { display: flex; align-items: center; gap: 5px; font-size: 12px; min-width: 0; }
#historyList .htime { font-size: 11px; color: var(--hint); }
#historyList .muted { color: var(--hint); }

#toast-wrap {
  position: fixed; top: 60px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; gap: 8px; align-items: center;
  pointer-events: none; z-index: 30;
}
.toast {
  background: var(--toast); color: var(--toast-fg); padding: 10px 16px;
  border-radius: 12px; font-size: 14px; box-shadow: 0 4px 20px rgba(0,0,0,.3);
  animation: pop .25s ease-out;
  border: 1px solid var(--border);
  pointer-events: auto;
}
.toast.reward { border-color: gold; box-shadow: 0 0 18px rgba(255,215,0,.6); }
.toastBtn {
  margin-left: 8px; flex: none;
  border: 1px solid var(--border); background: var(--btn); color: var(--btn-fg);
  border-radius: 8px; padding: 4px 10px; font-size: 13px; cursor: pointer;
}
@keyframes pop { from { transform: scale(.9) translateY(-6px); opacity: 0; } }

#toolbar {
  position: fixed; left: 50%; bottom: 12px; transform: translateX(-50%);
  width: min(860px, calc(100vw - 20px));
  background: var(--bar); backdrop-filter: blur(8px);
  border: 1px solid var(--border); border-radius: 16px;
  box-shadow: 0 8px 30px rgba(0,0,0,.25);
  padding: 2px 12px 10px; display: flex; flex-direction: column; gap: 8px;
}
#chromeToggle {
  align-self: stretch; background: transparent; border: none; cursor: pointer;
  color: var(--hint); font-size: 14px; line-height: 1; padding: 4px 0 0; min-height: 20px;
}
#toolbar.collapsed { padding-bottom: 2px; }
#toolbar.collapsed .row, #toolbar.collapsed .hint { display: none; }
#draftBar.hidden { display: none; }
#draftBar { justify-content: center; }
#draftUndo:disabled { opacity: .45; cursor: not-allowed; }
body.chromeHidden #undoBtn { bottom: 12px; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; justify-content: center; }
#colorBtn {
  border: 2px solid var(--border); border-radius: 10px; padding: 2px;
  background: var(--btn); cursor: pointer; min-height: 40px;
}
#colorBtn:disabled { opacity: .35; cursor: not-allowed; }
#colorChip { width: 40px; height: 30px; border-radius: 7px; display: block; }
#swatches { display: flex; gap: 6px; flex-wrap: wrap; }
#swatches.disabled { opacity: .35; pointer-events: none; }
.sw { width: 26px; height: 26px; border-radius: 8px; border: 2px solid rgba(0,0,0,.2); cursor: pointer; padding: 0; }
:root[data-theme="dark"] .sw { border-color: rgba(255,255,255,.3); }
.sw.sel { border-color: #111; transform: scale(1.12); }
:root[data-theme="dark"] .sw.sel { border-color: #fff; }
.seg { display: flex; gap: 6px; background: var(--seg); padding: 4px; border-radius: 12px; }
.seg button {
  border: 1px solid transparent; background: var(--btn); color: var(--btn-fg); border-radius: 9px;
  padding: 7px 10px; font-size: 13px; cursor: pointer; min-height: 36px;
  display: inline-flex; align-items: center; gap: 5px;
}
.seg button .bi { font-size: 15px; }
.seg button.active { background: #111; color: #fff; }
:root[data-theme="dark"] .seg button.active { background: #f0f0f2; color: #111; }
.seg button:disabled { opacity: .45; cursor: not-allowed; }
.seg button b { background: var(--chip); border-radius: 6px; padding: 0 5px; margin-left: 2px; color: #111; }
.hint { font-size: 11px; color: var(--hint); text-align: center; }

/* スマホ・タブレット */
@media (max-width: 700px) {
  #topbar { gap: 6px; top: 8px; left: 8px; right: 8px; }
  .pill { padding: 6px 10px; font-size: 12px; }
  .brand span { display: none; }
  .brand { padding: 7px 10px; }
  #profileBar { top: auto; bottom: 178px; left: 8px; padding: 4px 6px 4px 10px; }
  #profileName { width: 76px; font-size: 12px; }
  #myUid { display: none; }
  #toolbar { bottom: 8px; padding: 2px 8px calc(8px + env(safe-area-inset-bottom)); gap: 6px; }
  /* 折り返しで縦に膨らませず横スクロールに (描画領域を確保) */
  #toolbar .row { flex-wrap: nowrap; overflow-x: auto; justify-content: flex-start; scrollbar-width: none; }
  #toolbar .row::-webkit-scrollbar { display: none; }
  #toolbar .row > * { flex: none; }
  #swatches { flex-wrap: nowrap; overflow: visible; }
  body.chromeHidden #profileBar { bottom: calc(52px + env(safe-area-inset-bottom)); }
  body.chromeHidden #undoBtn { bottom: calc(52px + env(safe-area-inset-bottom)); }
  .seg { gap: 4px; }
  .seg button { padding: 8px 9px; font-size: 12px; min-height: 42px; min-width: 42px; justify-content: center; }
  .seg button span { display: none; }
  .seg button b { margin-left: 0; }
  .sw { width: 30px; height: 30px; }
  #colorBtn { min-height: 44px; }
  #colorChip { width: 42px; height: 32px; }
  .hint { display: none; }
  #userPanel, #historyPanel, #accountPanel, #settingsPanel { max-height: 52vh; }
  #toast-wrap { top: 54px; width: calc(100vw - 20px); }
  .toast { font-size: 13px; text-align: center; }
}