body { font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; margin: 0; background: #0b0f14; color: #e8eef6; }
.bar { display:flex; flex-direction:column; align-items:flex-start; padding: 12px 16px; background:#121a24; border-bottom:1px solid #1e2a3a; gap: 12px; }
.title { font-weight:700; letter-spacing:0.2px; }
.headerMain { display:flex; flex-direction:column; gap:10px; min-width:0; }
.headerRow { display:flex; align-items:center; justify-content:flex-start; gap:12px; flex-wrap:wrap; width:100%; }
.controls { display:flex; align-items:center; gap: 10px; flex-wrap: wrap;}
.controlsPrimary { row-gap: 10px; }
.controlsPlayActions { row-gap: 10px; }
.controlsSecondary { row-gap: 8px; }
.controls button { background:#1f6feb; border:0; color:white; padding:8px 10px; border-radius:10px; cursor:pointer; }
.controls button:hover { filter: brightness(1.05); }
.controls button:disabled { opacity: .65; cursor: wait; }
.controls input { width: 60px; padding:6px; border-radius:8px; border:1px solid #223046; background:#0b0f14; color:#e8eef6; }
.controlsSecondary .settingLabel { padding: 6px 10px; background:#0f1620; border:1px solid #1f2b3a; border-radius:12px; }
.controlsSecondary .settingLabel input,
.controlsSecondary .settingLabel select { height: 34px; box-sizing: border-box; }
.controlsSecondary #fideRating { width: 96px; }
.authArea { display:flex; align-items:center; gap:10px; }
.authBtn { background:#334155; border:0; color:white; padding:8px 10px; border-radius:10px; cursor:pointer; }
.authUser { opacity:.9; white-space:nowrap; }
.aiBusy { font-size: 13px; color: #9ecbff; min-height: 1em; }
.aiBusy.isBusy::after {
  display:inline-block;
  content: "...";
  overflow: hidden;
  vertical-align: bottom;
  width: 0;
  animation: dots 1.2s steps(4, end) infinite;
}
.fenLabel { display: inline-flex; align-items: center; gap: 8px; }
.fenLabel input {
  width: min(460px, 58vw);
  padding: 6px 8px;
  border-radius: 8px;
  border: 1px solid #223046;
  background: #0b0f14;
  color: #e8eef6;
}
.settingLabel { display: inline-flex; align-items: center; gap: 6px; position: relative; }
.infoTip {
  display:inline-flex; align-items:center; justify-content:center;
  width:16px; height:16px; border-radius:50%;
  border:1px solid #325278; color:#9ecbff; font-size:11px; font-weight:700;
  cursor: help; user-select: none; line-height:1;
}
.infoTip::after {
  content: attr(data-tip);
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  max-width: 320px;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid #2b3e57;
  background: #0f1620;
  color: #dbe9f8;
  font-size: 12px;
  line-height: 1.35;
  white-space: normal;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-4px);
  transition: opacity .15s ease, transform .15s ease;
  z-index: 30;
}
.infoTip:hover::after, .infoTip:focus-visible::after { opacity: 1; transform: translateY(0); }
.layout { display:grid; grid-template-columns: 520px 1fr; gap: 16px; padding: 16px; }
.boardWrap { display:flex; flex-direction:column; gap: 12px; }
.board { width: 520px; max-width: 90vw; }
.boardActions { display:flex; align-items:center; gap:10px; }
.boardActions button { background:#1f6feb; border:0; color:white; padding:8px 10px; border-radius:10px; cursor:pointer; }
.boardActions button:disabled { opacity:.65; cursor:wait; }
#board [data-square].selected {
  box-shadow: inset 0 0 0 4px rgba(255, 196, 0, 0.9);
}
.editorTools { display:flex; gap:8px; }
.editorTools button { background:#0e7490; border:0; color:white; padding:8px 10px; border-radius:10px; cursor:pointer; }
.editorPanel { background:#121a24; border:1px solid #1e2a3a; border-radius:12px; padding:10px; display:flex; flex-direction:column; gap:10px; }
.editorHelp { font-size:12px; opacity:.9; }
.editorBoard { width: 360px; max-width: 85vw; }
.editorMeta { display:flex; gap:10px; flex-wrap:wrap; align-items:center; }
.editorMeta label { display:inline-flex; align-items:center; gap:6px; }
.editorMeta input, .editorMeta select { padding:6px; border-radius:8px; border:1px solid #223046; background:#0b0f14; color:#e8eef6; }
.editorMeta #editorEp { width:60px; }
.editorMeta #editorHalfmove, .editorMeta #editorFullmove { width:70px; }
.castles { display:flex; flex-direction:column; gap:6px; align-items:flex-start; }
.castles label { display:flex; align-items:center; gap:8px; }
.editorActions { display:flex; gap:8px; flex-wrap:wrap; }
.editorActions button { background:#334155; border:0; color:white; padding:8px 10px; border-radius:10px; cursor:pointer; }
.editorFenRow { display:flex; gap:8px; flex-wrap:wrap; align-items:center; }
.status { background:#121a24; border:1px solid #1e2a3a; border-radius:12px; padding:10px; }
.savedPanel { background:#121a24; border:1px solid #1e2a3a; border-radius:12px; padding:10px; display:flex; flex-direction:column; gap:8px; }
.savedTitle { font-weight:600; font-size:13px; opacity:.9; }
.savedRow { display:flex; gap:8px; flex-wrap:wrap; align-items:center; }
.savedRowPrimary { display:grid; grid-template-columns: minmax(0, 1fr) auto; }
.savedRowSelect { display:block; }
.savedRowActions { display:grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.savedRowActionsTwo { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.savedRow input, .savedRow select {
  min-width: 180px;
  padding: 6px 8px;
  border-radius: 8px;
  border: 1px solid #223046;
  background: #0b0f14;
  color: #e8eef6;
}
.savedRowPrimary input,
.savedRowSelect select { width: 100%; min-width: 0; box-sizing: border-box; }
.savedRowActions button { width: 100%; }
.savedRow select { min-width: 280px; }
.savedRow button { background:#334155; border:0; color:white; padding:8px 10px; border-radius:10px; cursor:pointer; }
.savedMetaMuted { font-size: 12px; color:#8fa1b6; }
.adminPanel { gap: 14px; }
.adminSection { display:flex; flex-direction:column; gap:8px; padding-top:4px; }
.adminSection + .adminSection { border-top:1px solid #1f2b3a; padding-top:12px; }
.adminSectionTitle { font-weight:600; font-size:13px; color:#dbe9f8; }
.adminGrid { display:grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap:8px; }
.adminGrid input {
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
  padding: 6px 8px;
  border-radius: 8px;
  border: 1px solid #223046;
  background: #0b0f14;
  color: #e8eef6;
}
.adminCheck { display:flex; align-items:center; gap:8px; font-size:13px; }
.adminChecks {
  display:grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap:8px;
  margin-top:6px;
}
.adminChecks .adminCheck {
  padding: 8px 10px;
  border: 1px solid #223046;
  border-radius: 10px;
  background: #0f1620;
}
.pgn { background:#121a24; border:1px solid #1e2a3a; border-radius:12px; overflow:hidden; }
.pgn[open] { padding-bottom:10px; }
.pgnSummary {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  list-style:none;
  cursor:pointer;
  padding:10px 12px;
}
.pgnSummary::-webkit-details-marker { display:none; }
.pgnTitle { font-weight:600; }
.pgnHint { font-size:12px; opacity:.75; }
.pgn pre {
  margin: 0;
  padding: 0 12px;
  overflow:auto;
  max-height: 260px;
}
.coach { background:#121a24; border:1px solid #1e2a3a; border-radius:16px; padding:12px; display:flex; flex-direction:column; gap:10px; min-height: 520px;}
.coachHeader { display:flex; align-items:center; justify-content:space-between; gap: 8px; }
.coachTitle { font-weight:700; }
.coachBusy { flex: 1 1 auto; text-align: right; font-size: 13px; color: #9ecbff; min-height: 1em; }
.coachBusy.isBusy::after {
  display:inline-block;
  content: "...";
  overflow: hidden;
  vertical-align: bottom;
  width: 0;
  animation: dots 1.2s steps(4, end) infinite;
}
@keyframes dots {
  from { width: 0; }
  to { width: 1.2em; }
}
.coach textarea { width: 100%; resize: vertical; border-radius:12px; border:1px solid #223046; padding:10px; background:#0b0f14; color:#e8eef6; box-sizing: border-box; }
.coachHeader button { background:#2ea043; border:0; color:white; padding:8px 10px; border-radius:10px; cursor:pointer; }
.coachHeader button:disabled { opacity: .65; cursor: wait; }
.chatPanel { display:flex; flex-direction:column; gap:10px; background:#0f1620; border:1px solid #1f2b3a; border-radius:14px; padding:12px; }
.panelHeader { display:flex; align-items:center; justify-content:space-between; gap:12px; padding-bottom:8px; border-bottom:1px solid #223046; margin-bottom:2px; }
.panelTitle { font-size: 14px; font-weight: 700; letter-spacing: 0.2px; color:#dbe9f8; }
.chatHistory { display:flex; flex-direction:column; gap:10px; min-height: 160px; max-height: 280px; overflow:auto; padding-right:4px; }
.chatEmpty { color:#8fa1b6; font-size:13px; }
.chatMessage { width: 80%; max-width: 80%; padding:10px 12px; border-radius:14px; line-height:1.45; white-space:pre-wrap; box-sizing:border-box; }
.chatMessageUser { align-self:flex-end; margin-left:20%; background:#1f6feb; color:#fff; border-bottom-right-radius:6px; }
.chatMessageAssistant { align-self:flex-start; margin-right:20%; background:#0b0f14; border:1px solid #223046; color:#dbe9f8; border-bottom-left-radius:6px; }
.chatComposer { display:grid; grid-template-columns: minmax(0, 1fr) auto; gap:10px; align-items:end; }
.chatComposer button { background:#2ea043; border:0; color:white; padding:10px 14px; border-radius:12px; cursor:pointer; height: fit-content; }
.coachPanels { display:grid; grid-template-columns: 1fr; gap: 10px; }
.coachPanel { display:flex; flex-direction:column; gap: 6px; min-height: 0; }
.coachPanelHeader { display:flex; align-items:center; justify-content:flex-start; gap:12px; flex-wrap:wrap; }
.coachSubTitle { font-size: 12px; opacity: .85; }
.autoCoachToggle {
  display:flex;
  align-items:center;
  gap:10px;
  font-size:12px;
  opacity:.9;
  line-height:1.35;
}
.autoCoachToggle input { flex:0 0 auto; order:-1; }
.coachText { white-space: pre-wrap; background:#0b0f14; border:1px solid #223046; border-radius:12px; padding:10px; min-height: 130px; overflow:auto; margin: 0; }
@media (max-width: 980px) {
  .layout { grid-template-columns: 1fr; }
  .board { width: 100%; }
  .headerRow { align-items:flex-start; }
  .savedRowPrimary,
  .chatComposer { grid-template-columns: 1fr; }
  .savedRowActions { grid-template-columns: 1fr; }
  .adminGrid { grid-template-columns: 1fr; }
  .adminChecks { grid-template-columns: 1fr; }
  .chatMessage,
  .chatMessageUser,
  .chatMessageAssistant { width: 100%; max-width: 100%; margin-left:0; margin-right:0; }
}

.modeBtn { background:#30363d !important; }
.modeBtn.active { background:#1f6feb !important; }
.puzzleBar { display:flex; gap:10px; flex-wrap:wrap; align-items:center; }
.puzzleBar button { background:#8b5cf6; border:0; color:white; padding:8px 10px; border-radius:10px; cursor:pointer; }
.puzzleBar button:hover { filter: brightness(1.05); }
.puzzleMeta { opacity:0.9; font-size: 13px; }

.modalBackdrop {
  position: fixed;
  inset: 0;
  display: none;
  place-items: center;
  padding: 16px;
  background: rgba(4, 8, 12, 0.82);
  backdrop-filter: blur(6px);
  z-index: 1000;
}
.modalBackdrop.isOpen {
  display: grid;
}
.modalCard {
  width: min(420px, 100%);
  background: #121a24;
  border: 1px solid #223046;
  border-radius: 16px;
  padding: 22px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
}
.modalTitle {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
}
.modalForm {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.modalForm label {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.modalForm input {
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid #223046;
  background: #0b0f14;
  color: #e8eef6;
}
.modalError {
  min-height: 1.2em;
  color: #ff9b9b;
  font-size: 13px;
}
.modalActions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}
.modalActions button {
  background: #334155;
  border: 0;
  color: white;
  padding: 8px 12px;
  border-radius: 10px;
  cursor: pointer;
}
.modalActions button[type="submit"] {
  background: #1f6feb;
}