:root {
  --bg: #ffffff;
  --fg: #0b0f19;
  --muted: #5b6475;
  --line: #e6e8ee;
  --orange: #ff8a00;
  --blue: #0b2a6f;
  --card: #f7f8fb;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

body.player {
  background: #ccdcf2bf;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(8px);
}

body.player .topbar {
  background: black;
  color: white;
}

.brand {
  font-weight: 650;
  letter-spacing: 0.2px;
  justify-self: center;
  grid-column: 2;
}
.playerTitle {
  justify-self: center;
  grid-column: 2;
}
.topbarRight {
  display: flex;
  gap: 10px;
  align-items: center;
  justify-self: end;
  grid-column: 3;
}

.toplink {
  text-decoration: none;
  color: var(--fg);
  border: 1px solid var(--line);
  padding: 6px 10px;
  border-radius: 10px;
  font-size: 14px;
}

.wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px;
}

.navControls {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.btn {
  border: 2px solid #0b0f19;
  background: #fff;
  padding: 8px 10px;
  border-radius: 12px;
  font-size: 14px;
  cursor: pointer;
}

.btn:active { transform: translateY(1px); }

.btn:focus-visible {
  outline: 3px solid #4a90e2;
  outline-offset: 2px;
}

.btnPrimary:focus-visible {
  outline-color: #66b3ff;
}

.crumb {
  color: var(--muted);
  font-size: 14px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 3px;
}

.crumbLink {
  color: var(--muted);
  text-decoration: none;
  cursor: pointer;
  transition: color 0.15s;
}

.crumbLink:hover {
  color: var(--fg);
  text-decoration: underline;
}

.crumbLink.dragOver {
  font-weight: 700;
}

.crumbSep {
  color: var(--muted);
  user-select: none;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
}

.tile {
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--card);
  padding: 14px;
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  cursor: pointer;
  user-select: none;
  box-shadow: 0 1px 0 rgba(0,0,0,0.03);
}

.tile:focus {
  outline: none;
}

  .tile:hover:not(.selected) {
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  }
  
  .tile.selected {
    box-shadow: 0 0 0 3px #0b2a6f !important;
    transform: scale(0.98);
  }

.tileName {
  font-weight: 650;
  line-height: 1.15;
  word-break: break-word;
}

.tile.folder {
  background: color-mix(in srgb, var(--orange) 12%, #fff);
  border-color: color-mix(in srgb, var(--orange) 28%, var(--line));
}

.tile.folder .tileName { color: #5a2c00; }

.tile.folder.dragOver {
  background: color-mix(in srgb, var(--orange) 22%, #fff);
  border-color: color-mix(in srgb, var(--orange) 45%, var(--line));
  box-shadow: 0 4px 12px rgba(0,0,0,0.12);
}

.tile.card {
  background: color-mix(in srgb, var(--blue) 12%, #fff);
  border-color: color-mix(in srgb, var(--blue) 28%, var(--line));
}

.tile.card .tileName { color: var(--blue); }

.tile.text {
  background: color-mix(in srgb, #6b7280 12%, #fff);
  border-color: color-mix(in srgb, #6b7280 28%, var(--line));
}

.tile.text .tileName { color: #374151; }

.tile.image {
  background: color-mix(in srgb, #22c55e 15%, #fff);
  border-color: color-mix(in srgb, #22c55e 35%, var(--line));
}

.tile.image .tileName { color: #166534; }

.tile.add {
  background: #e8eef8;
  border-color: #d0d8e8;
}

.addPlus {
  font-size: 44px;
  font-weight: 700;
  color: var(--muted);
  line-height: 1;
}

/* ---------- player ---------- */
.playerWrap {
  max-width: 1000px;
  margin: 0 auto;
  padding: 18px 16px 80px;
}

.playerTitle {
  font-weight: 650;
  font-size: x-large;
  max-width: 70vw;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.closeX {
  border: 1px solid var(--line);
  background: #fff;
  width: 34px;
  height: 34px;
  border-radius: 12px;
  font-size: 18px;
  cursor: pointer;
  justify-self: end;
  grid-column: 3;
}

.cardStage {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  min-height: calc(100vh - 170px);
  max-height: calc(100vh - 170px);
  padding: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.cardStage.scrollY {
  overflow-y: auto;
  align-items: flex-start;
}

.textStage {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  min-height: min(68vh, 720px);
  padding: 18px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-wrap: break-word;
  font-family: monospace;
  font-size: 14px;
  line-height: 1.6;
  color: var(--fg);
}

.cardFace {
  width: 100%;
  max-width: 920px;
  font-size: clamp(18px, 2.2vw, 34px);
  line-height: 1.25;
  text-align: left;
  white-space: normal;
}

.line { margin: 6px 0; }
.blank { height: 10px; }

.comment {
  margin-top: 10px;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.35;
  text-align: left;
  white-space: normal;
}

.imgwrap {
  display: flex;
  justify-content: center;
  margin: 10px 0;
}

.mdimg {
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
  max-width: 100%;
  height: auto;
  display: block;
}

.cardStage .mdimg,
.overlayBody .mdimg {
  max-width: min(92vw, 900px);
  max-height: 70vh;
  object-fit: contain;
}

.hintBar {
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 8px;
  padding: 6px 10px;
}

.cardList {
  margin: 8px 0;
  padding-left: 36px;
  line-height: 1.6;
  list-style-type: disc;
}

.cardList li {
  margin: 6px 0;
  text-align: left;
}

@media (max-width: 640px) {
  .cardFace {
    font-size: clamp(22px, 5.4vw, 38px);
  }

  .comment {
    font-size: 12px;
  }

  .hintBar {
    font-size: 12px;
  }

  .addPlus {
    font-size: 36px;
  }

  .cardStage .mdimg,
  .overlayBody .mdimg {
    max-width: 82vw;
    max-height: 46vh;
    object-fit: contain;
  }

  .overlayCard { padding: 10px; }
  .overlayBody { padding: 4px 4px 10px; }
}

.cardStage.scrollY .mdimg {
  max-height: none;
}

/* ---------- optional overlay ---------- */
.optblock { margin: 10px 0; display: flex; justify-content: center; }
.optanchor {
  border: none;
  background: none;
  color: #1a4cff;
  cursor: pointer;
  text-decoration: underline;
  font-size: 16px;
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 14px;
  z-index: 50;
}

.overlay[aria-hidden="false"] { display: flex; }

.overlayCard {
  width: min(980px, 96vw);
  max-height: min(86vh, 900px);
  overflow: auto;
  background: #fff;
  border-radius: 18px;
  border: 1px solid var(--line);
  padding: 14px;
  position: relative;
}

.overlayClose {
  position: sticky;
  top: 0;
  float: right;
  border: 1px solid var(--line);
  background: #fff;
  width: 34px;
  height: 34px;
  border-radius: 12px;
  font-size: 18px;
  cursor: pointer;
}

.overlayBody {
  padding: 6px 6px 16px;
  font-size: 16px;
  line-height: 1.45;
  text-align: left;
}

/* ---------- editor ---------- */
.editorWrap {
  max-width: 1000px;
  margin: 0 auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.editorPath {
  color: var(--muted);
  font-size: 16px;
  font-weight: 600;
}

.editorLabel {
  font-size: 15px;
  color: var(--muted);
  font-weight: 600;
}

.editorInput {
  border: 2px solid #0b0f19;
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 16px;
}

.editorToolbar {
  display: flex;
  gap: 8px;
  align-items: center;
}

.editorSplit {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.editorSplit:has(> .editorCol:only-child) {
  grid-template-columns: 1fr;
}

.editorCol { display: flex; flex-direction: column; gap: 6px; }

.editorText {
  border: 2px solid #0b0f19;
  border-radius: 12px;
  padding: 10px 12px;
  min-height: 280px;
  resize: vertical;
  font-size: 16px;
  line-height: 1.35;
  font-family: inherit;
}

.editorActions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btnPrimary {
  background: #0b2a6f;
  color: #fff;
  border-color: #0b2a6f;
}

.editorStatus {
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 640px) {
  .editorSplit {
    grid-template-columns: 1fr;
  }
}

/* ---------- add overlay ---------- */
.addOverlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px;
  z-index: 50;
}

.addOverlayCard {
  width: min(380px, 96vw);
  background: #fff;
  border-radius: 18px;
  border: 1px solid var(--line);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.addOverlayContent {
  display: flex;
  gap: 10px;
  flex-direction: column;
}

.addOverlayBtn {
  border: none;
  padding: 14px 16px;
  border-radius: 12px;
  font-size: 17px;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  color: #fff;
}

.addOverlayBtn[data-action="card"] {
  background: #0b2a6f;
}

.addOverlayBtn[data-action="text"] {
  background: #6b7280;
}

.addOverlayBtn[data-action="folder"] {
  background: #ff8a00;
}

.addOverlayBtn[data-link-type="external"] {
  background: #0b2a6f;
}

.addOverlayBtn[data-link-type="internal"] {
  background: #2563eb;
}

.addOverlayBtn[data-link-type="cancel"] {
  background: #6b7280;
}

.addOverlayBtn:hover[data-action="card"] {
  background: #081d50;
}

.addOverlayBtn:hover[data-action="text"] {
  background: #4b5563;
}

.addOverlayBtn:hover[data-link-type="external"] {
  background: #081d50;
}

.addOverlayBtn:hover[data-link-type="internal"] {
  background: #1d4ed8;
}

.addOverlayBtn:hover[data-link-type="cancel"] {
  background: #4b5563;
}

/* ---------- conflict dialog ---------- */
.conflictDialog {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.conflictDialog h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
}

.conflictDialog p {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.conflictActions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 8px;
}

.conflictBtn {
  border: 2px solid #0b0f19;
  background: #fff;
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  text-align: center;
}

.conflictBtn:hover {
  background: #f7f8fb;
}

.conflictBtn:active {
  transform: translateY(1px);
}

.conflictBtn.keepBoth {
  background: #0b2a6f;
  color: white;
  border-color: #0b2a6f;
}

.conflictBtn.keepBoth:hover {
  background: #081d50;
}

.conflictBtn.replace {
  background: #d9534f;
  color: white;
  border-color: #d9534f;
}

.conflictBtn.replace:hover {
  background: #c9302c;
}

/* ---------- move overlay ---------- */
.moveOverlayHeader {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.moveTitle {
  font-size: 18px;
  font-weight: 600;
}

.moveInfo {
  font-size: 13px;
  color: var(--muted);
}

.moveCrumb {
  font-size: 13px;
  color: var(--muted);
}

.moveList {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
  max-height: 320px;
  overflow: auto;
  border: 1px solid var(--line);
  padding: 8px;
  border-radius: 12px;
  background: #fff;
}

.addOverlayBtn:hover[data-action="folder"] {
  background: #e67a00;
}

.addFolderForm {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.addFolderInput {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 15px;
}

.addFolderActions {
  display: flex;
  gap: 8px;
}

.addFolderSubmit {
  flex: 1;
  background: #0b2a6f;
  color: #fff;
  border-color: #0b2a6f;
}

.addFolderCancel {
  flex: 1;
}

/* ---------- context menu ---------- */
.contextMenu {
  position: fixed;
  background: #fff;
  border: 2px solid #0b0f19;
  border-radius: 8px;
  z-index: 100;
  min-width: 140px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.contextMenu button {
  display: block;
  width: 100%;
  text-align: left;
  border: none;
  background: none;
  padding: 10px 12px;
  font-size: 14px;
  cursor: pointer;
}

.contextMenu button:first-child {
  border-radius: 6px 6px 0 0;
}

.contextMenu button:last-child {
  border-radius: 0 0 6px 6px;
}

.contextMenu button:hover {
  background: #f0f2f6;
}

/* ---------- bugfixer ---------- */
.bugIntro {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 12px;
}

.bugList { border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.bugRow { padding: 10px 12px; border-top: 1px solid var(--line); }
.bugRow:first-child { border-top: none; }
.bugPath { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; font-size: 13px; }
.bugFlags { color: var(--muted); font-size: 13px; margin-top: 4px; }
.bugEmpty { padding: 14px; color: var(--muted); }

/* ---------- login ---------- */
.loginWrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: #f7f8fb;
}

.loginCard {
  width: min(420px, 92vw);
  background: #fff;
  border: 2px solid #0b0f19;
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.08);
}

.loginTitle {
  font-size: 20px;
  font-weight: 650;
  margin-bottom: 16px;
}

.loginForm {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.loginLabel {
  font-size: 13px;
  color: var(--muted);
}

.loginInput {
  border: 2px solid #0b0f19;
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 14px;
}

.loginStatus {
  min-height: 18px;
  font-size: 13px;
}

/* ---------- image overlay ---------- */
.imageOverlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}

.imageOverlayContent {
  max-width: 95vw;
  max-height: 95vh;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.imageOverlayHeader {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.imageOverlayTitle {
  color: white;
  font-size: 18px;
  font-weight: 600;
}

.imageOverlayClose {
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  color: white;
  font-size: 32px;
  line-height: 1;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.imageOverlayClose:hover {
  background: rgba(255,255,255,0.25);
}

.imageOverlayImg {
  max-width: 100%;
  max-height: calc(95vh - 80px);
  object-fit: contain;
  border-radius: 8px;
}

.imageComment {
  color: rgba(255,255,255,0.8);
  font-size: 14px;
  line-height: 1.5;
  margin: 0;
  padding: 8px 12px;
  background: rgba(255,255,255,0.1);
  border-radius: 6px;
  max-width: 600px;
}

.selectionBox {
  position: absolute;
  border: 2px solid var(--orange);
  background: rgba(255, 138, 0, 0.1);
  pointer-events: none;
  z-index: 1000;
}