/* assets/css/admin-course-editor.css */
.icc-admin-builder {
  --icc-light: #eeeecf;
  --icc-dark: #789b59;
  --icc-accent: #2271b1;
  --icc-border: #d0d5da;
}

.icc-admin-intro {
  margin: 0 0 16px;
  padding: 12px 14px;
  border-left: 4px solid var(--icc-accent);
  background: #f6f7f7;
}

.icc-admin-grid {
  display: grid;
  grid-template-columns: minmax(240px, 300px) minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.icc-admin-sidebar {
  position: sticky;
  top: 46px;
  max-height: calc(100vh - 80px);
  overflow: auto;
  padding-right: 4px;
}

.icc-admin-settings,
.icc-admin-chapter,
.icc-admin-editor {
  border: 1px solid var(--icc-border);
  border-radius: 6px;
  background: #fff;
}

.icc-admin-settings {
  margin-bottom: 14px;
  padding: 12px;
}

.icc-admin-settings h3 {
  margin: 0 0 10px;
}

.icc-admin-settings label,
.icc-admin-fields label,
.icc-admin-move-row label {
  display: block;
  margin-bottom: 9px;
  font-weight: 600;
}

.icc-admin-settings input,
.icc-admin-fields input,
.icc-admin-fields select,
.icc-admin-move-row textarea,
.icc-admin-chapter-header input,
.icc-admin-variation-title {
  width: 100%;
  margin-top: 4px;
}

.icc-admin-chapter {
  margin-bottom: 12px;
  padding: 10px;
}

.icc-admin-chapter-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px;
  align-items: center;
  margin-bottom: 8px;
}

.icc-admin-chapter-header input {
  margin: 0;
  font-weight: 700;
}

.icc-admin-variation-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) repeat(4, auto);
  gap: 4px;
  align-items: stretch;
  margin-bottom: 5px;
  border-radius: 4px;
}

.icc-admin-variation-row.is-selected {
  background: #e8f2fb;
}

.icc-admin-variation-select {
  display: flex;
  align-items: baseline;
  gap: 5px;
  width: 100%;
  padding: 8px;
  border: 0;
  background: transparent;
  color: #1d2327;
  text-align: left;
  cursor: pointer;
}

.icc-admin-variation-select small {
  margin-left: auto;
  color: #646970;
  white-space: nowrap;
}

.icc-admin-editor {
  min-width: 0;
  padding: 18px;
}

.icc-admin-editor-head {
  margin-bottom: 14px;
}

.icc-admin-breadcrumb {
  display: block;
  margin-bottom: 3px;
  color: #646970;
}

.icc-admin-variation-title {
  max-width: 650px;
  margin: 0;
  font-size: 24px;
  font-weight: 700;
}

.icc-admin-fields {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 140px 170px;
  gap: 12px;
  margin-bottom: 18px;
}

.icc-admin-fen-field {
  grid-column: 1 / -1;
}

.icc-admin-inline-field {
  display: flex;
  gap: 7px;
  align-items: center;
}

.icc-admin-inline-field input {
  min-width: 0;
}

.icc-admin-inline-field .button {
  flex: 0 0 auto;
}

.icc-admin-workspace {
  display: grid;
  grid-template-columns: minmax(320px, 620px) minmax(280px, 1fr);
  gap: 20px;
  align-items: start;
}

.icc-admin-board {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  grid-template-rows: repeat(8, minmax(0, 1fr));
  width: 100%;
  aspect-ratio: 1 / 1;
  border: 2px solid #2c3338;
  box-sizing: border-box;
  overflow: hidden;
  user-select: none;
  touch-action: none;
  container-type: inline-size;
}

.icc-admin-square {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
}

.icc-admin-square.is-light { background: var(--icc-light); }
.icc-admin-square.is-dark { background: var(--icc-dark); }
.icc-admin-square.is-legal-hover { box-shadow: inset 0 0 0 5px #2ea44f; }

.icc-admin-piece,
.icc-admin-drag-ghost {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  font-family: "Segoe UI Symbol", "DejaVu Sans", sans-serif;
  font-size: clamp(32px, 10cqw, 74px);
  line-height: 1;
  font-weight: 400;
  filter: drop-shadow(0 1px 0 rgba(255,255,255,.45));
}

.icc-admin-piece.is-draggable { cursor: grab; }
.icc-admin-piece.is-hidden { visibility: hidden; }

.icc-admin-drag-ghost {
  position: fixed;
  z-index: 1000000;
  top: 0;
  left: 0;
  pointer-events: none;
  filter: drop-shadow(0 5px 4px rgba(0,0,0,.3));
}

.icc-admin-coordinate {
  position: absolute;
  z-index: 2;
  font-size: clamp(9px, 1.4cqw, 13px);
  line-height: 1;
  font-weight: 700;
  pointer-events: none;
}

.icc-admin-file { right: 3px; bottom: 2px; }
.icc-admin-rank { left: 3px; top: 2px; }
.icc-admin-square.is-light .icc-admin-coordinate { color: var(--icc-dark); }
.icc-admin-square.is-dark .icc-admin-coordinate { color: var(--icc-light); }

.icc-admin-board-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 9px;
}

.icc-admin-board-help {
  color: #646970;
}

.icc-admin-moves-panel {
  max-height: 720px;
  overflow: auto;
  padding-right: 4px;
}

.icc-admin-moves-panel h3 {
  margin-top: 0;
}

.icc-admin-move-row {
  margin-bottom: 10px;
  padding: 10px;
  border: 1px solid var(--icc-border);
  border-radius: 5px;
  background: #f9f9f9;
}

.icc-admin-move-label {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 7px;
}

.icc-admin-move-label span {
  color: #646970;
}

.icc-admin-empty {
  padding: 18px;
  border: 1px dashed var(--icc-border);
  color: #646970;
  text-align: center;
}

@media (max-width: 1180px) {
  .icc-admin-workspace {
    grid-template-columns: 1fr;
  }
  .icc-admin-moves-panel {
    max-height: none;
  }
}

@media (max-width: 900px) {
  .icc-admin-grid {
    grid-template-columns: 1fr;
  }
  .icc-admin-sidebar {
    position: static;
    max-height: none;
  }
  .icc-admin-fields {
    grid-template-columns: 1fr 1fr;
  }
  .icc-admin-fen-field {
    grid-column: 1 / -1;
  }
}

@media (max-width: 600px) {
  .icc-admin-inline-field {
    align-items: stretch;
    flex-direction: column;
  }
  .icc-admin-fields {
    grid-template-columns: 1fr;
  }
  .icc-admin-fen-field {
    grid-column: auto;
  }
}

.icc-admin-board { position: relative; }
.icc-admin-square { z-index: 1; }
.icc-admin-piece { position: relative; z-index: 2; }
.icc-admin-annotation-layer {
  position: absolute;
  inset: 0;
  z-index: 4;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.icc-admin-position-label {
  margin-bottom: 7px;
  font-weight: 700;
  color: #3c434a;
}
.icc-admin-move-row.is-current-position {
  border-color: var(--icc-accent);
  box-shadow: inset 4px 0 0 var(--icc-accent);
  background: #eef6fc;
}
.icc-admin-start-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.icc-admin-move-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

/* On large, relatively short screens, reduce the editor board enough to keep
   the board and controls visible. Small screens keep the normal responsive flow. */
@media (min-width: 1181px) and (min-height: 850px) and (max-height: 1040px) {
  .icc-admin-workspace {
    grid-template-columns: minmax(430px, min(620px, calc(100vh - 390px))) minmax(280px, 1fr);
  }
  .icc-admin-board {
    width: min(100%, calc(100vh - 390px));
    min-width: 430px;
  }
  .icc-admin-moves-panel {
    max-height: calc(100vh - 390px);
  }
}

/* Version 4: linked reference subvariations and move-list navigation. */
.icc-admin-variation-row.is-subvariation {
  margin-left: 18px;
  border-left: 3px solid #4b86c5;
  background: #f3f8ff;
}

.icc-admin-variation-row.is-subvariation .icc-admin-variation-select {
  color: #175fa9;
}

.icc-admin-subvariation-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin: 0 0 15px;
  padding: 11px 12px;
  border-left: 4px solid #2271b1;
  background: #eef6fc;
}

.icc-admin-subvariation-banner strong,
.icc-admin-subvariation-banner span {
  display: block;
}

.icc-admin-subvariation-banner span {
  margin-top: 3px;
  color: #50575e;
}

.icc-admin-linked-subvariations {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 7px 0 10px;
  font-size: .92rem;
}

.icc-admin-linked-subvariations button,
.icc-admin-add-subvariation {
  padding: 0;
  border: 0;
  background: transparent;
  color: #1769d2;
  font: inherit;
  text-decoration: underline;
  cursor: pointer;
}

.icc-admin-move-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
}

.icc-admin-move-row.is-current-position {
  border-color: #2271b1;
  box-shadow: inset 4px 0 0 #2271b1;
  background: #eef6fc;
}

.icc-admin-moves-panel {
  scroll-behavior: smooth;
  overscroll-behavior: contain;
}

/* Version 5: clickable editor move history and inline reference-line workflow. */
.icc-admin-position-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  width: 100%;
  margin: 0 0 7px;
  padding: 0;
  border: 0;
  background: transparent;
  color: #1d2327;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.icc-admin-position-link:hover strong,
.icc-admin-position-link:focus-visible strong {
  color: var(--icc-accent);
  text-decoration: underline;
}

.icc-admin-position-link span {
  color: #646970;
  white-space: nowrap;
}

.icc-admin-start-row .icc-admin-position-link {
  margin: 0;
}

.icc-admin-linked-subvariations::after {
  content: "The [[line:…]] marker in the comment becomes this blue clickable move sequence.";
  flex-basis: 100%;
  color: #646970;
  font-size: .84rem;
  text-decoration: none;
}

/* Version 6: inline rich comments and alternatives that branch before a move. */
.icc-admin-comment-label {
  margin-top: 8px;
}

.icc-admin-comment-editor {
  width: 100%;
  min-height: 74px;
  margin-top: 4px;
  padding: 8px 10px;
  border: 1px solid #8c8f94;
  border-radius: 3px;
  box-sizing: border-box;
  background: #fff;
  color: #1d2327;
  font-weight: 400;
  line-height: 1.45;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  cursor: text;
}

.icc-admin-comment-editor:focus {
  border-color: #2271b1;
  box-shadow: 0 0 0 1px #2271b1;
  outline: 2px solid transparent;
}

.icc-admin-comment-editor:empty::before {
  content: attr(data-placeholder);
  color: #757575;
  pointer-events: none;
}

.icc-admin-inline-reference-chip {
  display: inline;
  padding: 0 2px;
  border: 0;
  border-radius: 2px;
  background: transparent;
  color: #1769d2;
  font-weight: 600;
  text-decoration: underline;
  cursor: pointer;
  white-space: normal;
}

.icc-admin-inline-reference-chip:hover,
.icc-admin-inline-reference-chip:focus-visible {
  background: #e7f1ff;
  color: #0a4fa5;
}

/* Version 7 additions */
.icc-admin-square.is-text-reference {
  box-shadow: inset 0 0 0 4px rgba(54, 166, 85, .9), inset 0 0 0 10px rgba(54, 166, 85, .18);
}
.icc-admin-position-link {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  width: 100%;
  margin: 0 0 8px;
  padding: 0;
  border: 0;
  background: transparent;
  color: #172033;
  text-align: left;
  cursor: pointer;
}
.icc-admin-position-link:hover strong { color: #0d5bd7; text-decoration: underline; }
.icc-admin-position-link span { color: #697586; font-size: .84rem; white-space: nowrap; }
.icc-admin-move-row.is-current-position { border-left: 4px solid #0d5bd7; background: #edf5ff; }
.icc-admin-comment-label textarea {
  width: 100%;
  margin-top: 5px;
  padding: 9px 10px;
  border: 1px solid #b9c3d0;
  border-radius: 6px;
  resize: vertical;
  font-weight: 400;
  line-height: 1.45;
}
.icc-admin-comment-preview {
  margin: 8px 0 10px;
  padding: 9px 10px;
  border-left: 3px solid #6c9fe8;
  border-radius: 4px;
  background: #f5f8fc;
  color: #334155;
  font-size: .93rem;
  line-height: 1.55;
}
.icc-admin-comment-preview::before {
  content: "Preview";
  display: block;
  margin-bottom: 4px;
  color: #7b8798;
  font-size: .69rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.icc-admin-inline-comment-move {
  display: inline;
  padding: 0;
  border: 0;
  background: transparent;
  color: #1764d8;
  cursor: pointer;
  font-weight: 700;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}
.icc-admin-square-reference {
  border-radius: 3px;
  color: #1764d8;
  font-weight: 650;
  cursor: default;
}
.icc-admin-nag-editor {
  display: grid;
  grid-template-columns: minmax(170px, 230px) minmax(0, 1fr);
  gap: 10px;
  align-items: end;
  margin: 4px 0 9px;
}
.icc-admin-nag-editor label { margin: 0; font-size: .82rem; }
.icc-admin-nag-editor select { width: 100%; margin-top: 4px; }
.icc-admin-nag-chips { display: flex; flex-wrap: wrap; gap: 5px; }
.icc-admin-nag-chips button {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  min-height: 31px;
  padding: 4px 8px;
  border: 1px solid #c8d7ed;
  border-radius: 999px;
  background: #edf5ff;
  color: #174a91;
  cursor: pointer;
  font-weight: 800;
}
.icc-admin-nag-chips button span { color: #52657d; font-size: .75rem; font-weight: 600; }
.icc-admin-move-actions { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.icc-admin-moves-panel { scrollbar-gutter: stable; }

@media (min-width: 1181px) and (min-height: 760px) {
  .icc-admin-workspace { grid-template-columns: minmax(350px, min(47vw, 610px)) minmax(310px, 1fr); }
  .icc-admin-moves-panel { max-height: min(720px, calc(100vh - 245px)); }
}
@media (max-width: 700px) {
  .icc-admin-nag-editor { grid-template-columns: 1fr; }
}


/* Version 8: clearer variation naming. */
.icc-admin-variation-name-field {
  display: grid;
  gap: 5px;
  margin-top: 5px;
  color: #445064;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .02em;
}
.icc-admin-variation-name-field .icc-admin-variation-title {
  min-width: min(520px, 70vw);
  color: #172033;
  font-size: 1.22rem;
  font-weight: 750;
  letter-spacing: -.015em;
}

/* v13.5: Board Editor board closer to the Variation Preview size. */
@media (min-width: 981px) {
  .icc-admin-workspace {
    grid-template-columns: minmax(390px, 560px) minmax(310px, 1fr) !important;
  }
  .icc-admin-board,
  .icc-admin-board-controls,
  .icc-admin-board-help {
    width: min(100%, 560px) !important;
  }
}


/* v15.1.125 Variation Lab interaction updates */
.icc-admin-editor-head{display:flex;align-items:flex-end;justify-content:space-between;gap:12px}
.icc-admin-history-actions{display:flex;gap:6px;flex:0 0 auto}
.icc-admin-variation-row[draggable="true"]{cursor:grab}
.icc-admin-variation-row.is-dragging{opacity:.55}
.icc-admin-variation-row.is-drop-target{box-shadow:inset 0 3px 0 #316be8}
.icc-admin-variation-row.is-drop-target.drop-after{box-shadow:inset 0 -3px 0 #316be8}
.icc-admin-variation-drag-handle{display:grid;place-items:center;padding:0 2px;color:#8b98aa;font-weight:900;letter-spacing:-3px;cursor:grab;user-select:none}
.icc-admin-square.is-legal-target::after{content:"";position:absolute;z-index:3;width:22%;aspect-ratio:1;border-radius:50%;background:rgba(20,30,40,.28);pointer-events:none}
.icc-admin-square.is-legal-hover::after{background:rgba(33,160,79,.52)}
html[data-theme="dark"] .icc-admin-square.is-legal-target::after{background:rgba(255,255,255,.32)}
@media (max-width:760px){.icc-admin-editor-head{align-items:stretch;flex-direction:column}.icc-admin-history-actions{align-self:flex-start}}


/* v15.1.126 — Stockfish soft-fail alternatives. */
.icc-admin-head-actions{display:grid;justify-items:end;gap:6px}.icc-admin-engine-alternatives{display:flex;align-items:center;justify-content:flex-end;gap:6px;flex-wrap:wrap}.icc-admin-engine-alternatives label{display:flex;align-items:center;gap:5px;color:#65748a;font-size:.72rem;font-weight:750}.icc-admin-engine-alternatives input{width:62px;padding:6px 7px;border:1px solid #cdd7e6;border-radius:8px;background:#fff;color:#12223f}.icc-admin-alternative-status{max-width:460px;color:#6b7a91;font-size:.69rem;text-align:right}.icc-admin-alternatives{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin:8px 0 2px;padding:8px 9px;border-radius:9px;background:#f3f7fd}.icc-admin-alternatives>span{color:#60718a;font-size:.68rem;font-weight:850;text-transform:uppercase;letter-spacing:.06em}.icc-admin-alternatives button{border:1px solid #c8d7ef;border-radius:999px;background:#fff;color:#244b86;padding:4px 8px;cursor:pointer;font-size:.76rem;font-weight:800}.icc-admin-alternatives button small{font-size:.65rem;color:#7688a2}.icc-admin-alternatives button:hover{border-color:#83a8e4;background:#edf4ff}html[data-theme="dark"] .icc-admin-engine-alternatives input,html[data-theme="dark"] .icc-admin-alternatives button{background:#1a2635;color:#e6efff;border-color:#415572}html[data-theme="dark"] .icc-admin-alternatives{background:#172231}
@media(max-width:900px){.icc-admin-head-actions{justify-items:start}.icc-admin-engine-alternatives{justify-content:flex-start}.icc-admin-alternative-status{text-align:left}}


/* v15.1.153 — PGN import and manual alternative-move controls. */
.icc-admin-import-actions{display:flex;justify-content:flex-end}
.icc-admin-alternatives .icc-admin-add-alternative{padding:3px 7px;border-style:dashed;background:transparent;color:#315f9d}
.icc-admin-alternative-item{display:inline-flex!important;align-items:center!important;gap:2px!important;text-transform:none!important;letter-spacing:0!important}
.icc-admin-alternative-item>button:first-child{border-radius:999px 4px 4px 999px}
.icc-admin-alternative-item .icc-admin-alt-remove{min-width:25px;padding:4px 6px;border-radius:4px 999px 999px 4px;color:#9a3340}
.icc-admin-alternative-item .icc-admin-alt-remove:hover{border-color:#dc9ca5;background:#fff1f3}
html[data-theme="dark"] .icc-admin-alternatives .icc-admin-add-alternative{background:transparent;color:#a9c9ff}
html[data-theme="dark"] .icc-admin-alternative-item .icc-admin-alt-remove:hover{background:#41242a;border-color:#81515a}