/* Base typography: readable defaults (avoids faint gray body text in some browsers). */
body {
  font-family: system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.45;
  color: #1a1a1a;
  background: #fff;
  /* Breathing room at viewport edges so nothing sits flush against the window. */
  padding: 12px 16px 20px;
  box-sizing: border-box;
}

table.moves tr {
  border: 0;
}

table.moves {
  border: 0;
  border-collapse: separate;
  border-spacing: 10px 12px;
}

/* Outer cell: one 3×3 mini-board per matchbox — wide enough for bead + count. */
td.board {
  font-family: monospace;
  border: 1px solid black;
  min-width: 108px;
  min-height: 118px;
  width: auto;
  height: auto;
  text-align: center;
  vertical-align: top;
  padding: 5px;
  box-sizing: border-box;
}

td.num {
  font-weight: bold;
  color: #000000;
}

/* Stack bead above count so layout stays even when count is 0 or bead is hard to see. */
td.num .bead {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  margin: 0 auto;
  flex-shrink: 0;
  vertical-align: middle;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.28);
}

td.num .bead-count {
  display: block;
  min-width: 1.25ch;
  text-align: center;
  line-height: 1.2;
  vertical-align: middle;
}

/* Center mini-board inside each matchbox cell */
td.board .center {
  display: flex;
  justify-content: center;
  width: 100%;
}

.bead-0 { background: #e11d48; } /* rose */
.bead-1 { background: #f97316; } /* orange */
.bead-2 { background: #f59e0b; } /* amber */
.bead-3 { background: #84cc16; } /* lime */
.bead-4 { background: #22c55e; } /* green */
.bead-5 { background: #06b6d4; } /* cyan */
.bead-6 { background: #3b82f6; } /* blue */
.bead-7 { background: #6366f1; } /* indigo */
.bead-8 { background: #a855f7; } /* purple */

.menace-bead-legend {
  margin: 0.25rem 0 0.55rem 0;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #334155;
  font-size: 0.875rem;
}

.menace-bead-legend-grid {
  display: grid;
  grid-template-columns: repeat(3, 10px);
  grid-template-rows: repeat(3, 10px);
  gap: 3px;
  padding: 4px 6px;
  border: 1px solid #e1e1e1;
  background: #fff;
  border-radius: 4px;
}

.menace-bead-legend-grid .bead {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.28);
}

.menace-bead-legend-text {
  white-space: nowrap;
}

table.board td {
  font-family: monospace;
  text-align: center;
  vertical-align: middle;
}

/* Mini-board cells inside a matchbox: fixed minimum size (old 8×8px crushed beads and counts). */
table.board:not(.large) td {
  font-size: 11px;
  box-sizing: border-box;
  vertical-align: middle;
}

/* Do not set display:flex on <td> — it exits the table formatting context and the 3×3 grid collapses to a single column. */
table.board:not(.large) td.num {
  vertical-align: middle;
  text-align: center;
  min-width: 30px;
  min-height: 40px;
  width: auto;
  height: auto;
  padding: 5px 4px;
}

table.board:not(.large) td.num .bead {
  margin-bottom: 4px;
}

table.board:not(.large) td:not(.num) {
  min-width: 30px;
  min-height: 40px;
  padding: 4px;
}

table.board.large td {
  position: relative;
  font-size: 24px;
  width: 46px;
  height: 46px;
  color: #0f172a;
}

/* Cell 1–9 hints: must stay legible under empty cells (was 14% black — too faint). */
table.board.large td::before {
  content: attr(data-cell-n);
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  font-size: 28px;
  font-weight: bold;
  color: #94a3b8;
  z-index: 0;
  pointer-events: none;
  line-height: 1;
}

table.board.large td.has-mark::before {
  content: none;
}

table.board.large {
  position: absolute;
  left: 105px;
  top: 20px;
}

table.board td,
table.board tr,
table.board {
  border-collapse: collapse;
}

table.board td.p1,
table.board td.p7 {
  border-left: 1px solid grey;
  border-right: 1px solid grey;
}

table.board td.p3,
table.board td.p5 {
  border-top: 1px solid grey;
  border-bottom: 1px solid grey;
}

table.board td.p4 {
  border: 1px solid grey;
}

.wins {
  border: 2px solid grey;
  position: absolute;
  width: 120px;
  min-height: 84px;
  height: auto;
  padding: 10px 8px 12px 8px;
  box-sizing: border-box;
  top: 212px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  color: #1a1a1a;
}

.wins small {
  font-size: 0.9rem;
  color: #334155;
}

.summary {
  border: 2px solid grey;
  position: absolute;
  width: 440px;
  min-height: 104px;
  height: auto;
  padding: 10px 12px;
  box-sizing: border-box;
  top: 328px;
  left: 35px;
  text-align: center;
  overflow: hidden;
  white-space: pre-line;
  font-size: 0.95rem;
  line-height: 1.5;
  color: #1a1a1a;
}

.graph-section {
  position: absolute;
  top: 448px;
  left: 35px;
}

.streak-indicator-wrap {
  max-width: 520px;
  margin-bottom: 6px;
}

.streak-indicator {
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 13px;
  line-height: 1.4;
  letter-spacing: 0.02em;
  word-break: break-all;
  overflow-x: auto;
  padding: 4px 6px;
  border: 1px solid #ccc;
  background: #fafafa;
  color: #111;
  min-height: 1.4em;
}

.graph-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  margin-bottom: 8px;
  max-width: 520px;
  font-size: 0.9rem;
}

.graph-controls input[type="number"] {
  width: 3.5rem;
}

.graph-section .graph {
  display: block;
}

.wins#n1 {
  left: 35px;
}

.wins#n2 {
  left: 195px;
}

.wins#n3 {
  left: 355px;
}

.dis {
  font-size: 32px;
  padding-top: 2px;
}

table.board td form,
table.board td button {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  min-height: 36px;
  border: none;
  background: transparent;
  cursor: pointer;
  font: inherit;
  position: relative;
  z-index: 1;
}

.players {
  position: absolute;
  left: 280px;
  top: 28px;
  font-size: 0.95rem;
  color: #1a1a1a;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.9rem;
  max-width: min(240px, calc(100vw - 300px));
}

.players select {
  font: inherit;
  color: #1a1a1a;
  max-width: 11rem;
  display: block;
}

.player-block {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.2rem;
  max-width: 100%;
}

.player-picker-row {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.player-picker-row select {
  margin-top: 0;
}

/* Read-only indicator: this side’s play is recorded into MENACE O / MENACE X matchboxes when Human or MENACE. */
.player-matchbox-track {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex-shrink: 0;
  padding: 4px 6px;
  border: 1px solid #cbd5e1;
  border-radius: 4px;
  background: #f8fafc;
  font-size: 0.65rem;
  color: #64748b;
  line-height: 1.15;
  text-align: center;
}

.player-matchbox-track-caption {
  font-weight: 600;
  color: #475569;
  white-space: nowrap;
}

.player-matchbox-track.is-training {
  border-color: #15803d;
  background: #ecfdf3;
  color: #166534;
}

.player-matchbox-track.is-training .player-matchbox-track-caption {
  color: #166534;
}

.player-matchbox-track-box {
  width: auto;
  min-width: 34px;
  min-height: 34px;
  padding: 2px;
  border: 2px solid #94a3b8;
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  font-size: 11px;
  line-height: 1;
  box-sizing: border-box;
}

/* Canonical 3×3 for the last matchbox position (MENACE or human learner). */
.matchbox-track-mini {
  display: grid;
  grid-template-columns: repeat(3, 10px);
  grid-template-rows: repeat(3, 10px);
  gap: 1px;
  align-items: center;
  justify-items: center;
}

.matchbox-track-mini-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  font-size: 8px;
  line-height: 1;
  box-sizing: border-box;
}

.matchbox-track-mini-cell.mini-empty {
  background: #f1f5f9;
  border-radius: 1px;
}

.matchbox-track-mini-cell.mini-o {
  color: #0f172a;
}

.matchbox-track-mini-cell.mini-x {
  color: #0f172a;
}

.player-matchbox-track.is-training .player-matchbox-track-box {
  border-color: #15803d;
  background: #dcfce7;
  color: #15803d;
}

.player-matchbox-track.is-training .player-matchbox-track-box.has-mini-board {
  color: #0f172a;
}

.player-label {
  display: block;
  margin-right: 0;
  vertical-align: top;
  line-height: 1.45;
  max-width: 240px;
  font-weight: 600;
}

.player-help {
  margin: 0.45rem 0 0 0;
  font-size: 0.875rem;
  line-height: 1.5;
  color: #1a1a1a;
  font-weight: normal;
}

/* Upper area, left of the matchbox panel — avoids covering the win/draw boxes below the board. */
.speed {
  position: absolute;
  top: 24px;
  right: calc(12px + min(68vw, 820px) + 16px);
  left: auto;
  text-align: left;
  font-size: 0.95rem;
  line-height: 1.5;
  color: #1a1a1a;
  max-width: min(240px, calc(100vw - 24px));
  padding-top: 0.15rem;
  z-index: 1;
}

@media (max-width: 520px) {
  .speed {
    left: 12px;
    right: auto;
  }
}

.speed-slider-value {
  margin-left: 0;
  margin-top: 0.35rem;
  font-variant-numeric: tabular-nums;
  min-width: 3.25rem;
  display: block;
  font-weight: 600;
  color: #1a1a1a;
}

.speed input[type="range"] {
  display: block;
  width: 100%;
  max-width: 220px;
  margin-top: 0.5rem;
}

.human-move {
  position: absolute;
  top: 318px;
  left: 280px;
  text-align: left;
  max-width: 240px;
  font-size: 0.95rem;
  line-height: 1.5;
  color: #1a1a1a;
}

.player-block .player-learner-tag {
  margin-left: 0;
  margin-top: 0.1rem;
}

.player-learner-tag {
  display: inline-block;
  margin-left: 0.35rem;
  font-size: 0.8rem;
  font-weight: bold;
  color: #334155;
  letter-spacing: 0.02em;
  vertical-align: middle;
  white-space: nowrap;
}

.human-move input[type="text"] {
  width: 4rem;
  margin-top: 0.25rem;
}

.moves-container {
  position: absolute;
  right: 12px;
  top: 12px;
  z-index: 2;
  max-width: min(68vw, 820px);
  max-height: calc(100vh - 24px);
  overflow: auto;
  border: 1px solid #999;
  padding: 14px 16px 16px;
  background: #fafafa;
  box-sizing: border-box;
  font-size: 0.95rem;
  line-height: 1.5;
  color: #1a1a1a;
}

.menace-combined-toolbar {
  margin-bottom: 0.5rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid #ddd;
}

.menace-combined-toolbar-popouts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.5rem;
  align-items: center;
}

.menace-popout-btn {
  font: inherit;
  font-size: 0.85rem;
  padding: 0.25rem 0.5rem;
  cursor: pointer;
}

.menace-two-columns {
  display: grid;
  grid-template-columns: minmax(168px, 1fr) minmax(168px, 1fr);
  gap: 12px 20px;
  align-items: start;
}

.menace-two-columns.menace-single-column-popout {
  grid-template-columns: 1fr;
}

.menace-two-columns > .menace-panel-col:first-child {
  padding-right: 6px;
}

.menace-two-columns > .menace-panel-col:nth-child(2) {
  border-left: 1px solid #ddd;
  padding-left: 18px;
}

.menace-panel-col {
  min-width: 0;
  overflow: visible;
}

.menace-col-heading {
  margin: 0 0 0.5rem 0;
  font-size: 1.05rem;
  font-weight: bold;
  letter-spacing: 0.02em;
  line-height: 1.25;
  overflow: visible;
  white-space: normal;
  word-break: normal;
}

.menace-tweak-reveal,
.menace-tweak-hide {
  margin-bottom: 0.35rem;
}

.menace-settings-inner {
  padding-top: 0.15rem;
}

.menace-slider-row {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0.4rem 0.55rem;
  margin-bottom: 0.4rem;
  min-height: 1.55rem;
}

.menace-slider-label {
  flex: 0 0 4.5rem;
  min-width: 0;
  text-align: right;
  font-size: 0.875rem;
  color: #1a1a1a;
}

.menace_settings input.menace-settings-slider[type="range"],
.menace-settings-inner input.menace-settings-slider[type="range"] {
  flex: 1 1 4rem;
  min-width: 56px;
  max-width: 100%;
  width: 100%;
  vertical-align: middle;
  height: 1.1rem;
}

.menace-slider-num {
  flex: 0 0 1.25rem;
  text-align: right;
  font-variant-numeric: tabular-nums;
  font-size: 0.875rem;
}

.menace-ic-value {
  flex: 0 1 auto;
  font-size: 0.875rem;
  white-space: nowrap;
  color: #1a1a1a;
}

.menace-ic-unit {
  font-size: inherit;
}

.menace-checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 0.35rem;
  margin: 0.5rem 0 0.4rem 0;
  font-size: 0.875rem;
  line-height: 1.4;
  cursor: pointer;
  color: #1a1a1a;
}

.menace-checkbox-row input {
  margin-top: 0.12rem;
  flex-shrink: 0;
}

.menace-no-beads-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.5rem;
  margin: 0.35rem 0 0.5rem 0;
  font-size: 0.875rem;
  color: #1a1a1a;
}

.menace-no-beads-select {
  min-width: 11rem;
  min-height: 1.55rem;
  font-size: 0.875rem;
}

.menace-settings-actions {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-top: 0.65rem;
}

.menace-settings-actions .menace-btn-solid {
  width: 100%;
  text-align: center;
  margin: 0;
  padding: 0.4rem 0.5rem;
  font-size: 0.85rem;
}

.menace-btn-warn {
  border-color: #a65;
  background: #fff8f5;
}

.menace-matchbox-intro {
  margin: 0.65rem 0 0.35rem 0;
  padding-top: 0.35rem;
  border-top: 1px solid #e8e8e8;
  font-size: 0.9rem;
  color: #1a1a1a;
}

.menace-move-group {
  margin: 0.45rem 0 0.2rem 0;
  font-size: 0.875rem;
  font-weight: bold;
  color: #1a1a1a;
}

.menace-moves-wrap {
  overflow-x: auto;
  margin-bottom: 0.65rem;
  padding: 2px 0;
}

.menace-moves-wrap table.moves {
  margin: 0 auto;
}

.menace-linkish {
  background: none;
  border: none;
  color: #0000ee;
  cursor: pointer;
  text-decoration: underline;
  font: inherit;
  font-size: 0.85rem;
  padding: 0;
}

.menace-linkish:hover {
  color: #551a8b;
}

@media (max-width: 700px) {
  .moves-container {
    max-width: calc(100vw - 12px);
  }

  .menace-two-columns {
    grid-template-columns: 1fr;
  }

  .menace-two-columns > .menace-panel-col:nth-child(2) {
    border-left: none;
    padding-left: 0;
    border-top: 1px solid #ddd;
    padding-top: 10px;
    margin-top: 8px;
  }
}

body.menace-popup-body {
  padding: 12px;
  margin: 0;
  font-family: system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.45;
  color: #1a1a1a;
}

.menace-popup-note {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: #444;
}

.menace_settings {
  display: none;
}

.menace-panel button[type="button"].menace-btn-solid {
  display: inline-block;
  border: 1px solid #666;
  background: #f0f0f0;
  color: #000;
  text-decoration: none;
  cursor: pointer;
  border-radius: 2px;
}

.menace-panel button[type="button"].menace-btn-solid:hover {
  background: #e4e4e4;
}

.menace_settings_title {
  font-weight: bold;
  margin: 0.55rem 0 0.25rem 0;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #334155;
}