* { box-sizing: border-box; margin: 0; padding: 0; }

html {
  background: #0b0b12;
  min-height: 100vh;
}

body {
  background: #0b0b12;
  color: #dcdce4;
  font-family: ui-sans-serif, system-ui, -apple-system, sans-serif;
  display: flex;
  width: fit-content;
  min-height: 100vh;
  align-items: stretch;
}

/* ── Col 1: tabuleiro ──────────────────────────────────────── */

#board-col {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 18px 20px;
  border-right: 1px solid #1c1c28;
}

#controls {
  display: flex;
  gap: 5px;
  align-items: center;
  flex-wrap: wrap;
  width: 560px;
}

#speed-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  font-size: 11px;
  color: #555566;
}

input[type=range] {
  width: 88px;
  accent-color: #5680e0;
}

#canvas {
  display: block;
  background: #10101a;
  border: 1px solid #20202e;
  border-radius: 8px;
  cursor: crosshair;
}

.board-note {
  font-size: 12px;
  color: #8888a0;
  line-height: 1.65;
  width: 560px;
  padding: 12px 15px;
  background: #111119;
  border: 1px solid #1e1e2e;
  border-left: 3px solid #4060c0;
  border-radius: 5px;
}

.board-note b { color: #c8c8dc; }

/* ── Col 2: painel de informações ──────────────────────────── */

#info-col {
  flex: 0 0 300px;
  display: flex;
  flex-direction: column;
  gap: 0;
  border-right: 1px solid #1c1c28;
  overflow-y: auto;
  max-height: 100vh;
}

/* Global stats */

#global-stats {
  padding: 14px 16px;
  border-bottom: 1px solid #1c1c28;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.gs-row {
  display: flex;
  gap: 5px;
}

.gs-item {
  flex: 1;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 5px 8px;
  background: #111119;
  border: 1px solid #1e1e2c;
  border-radius: 4px;
}

.gs-label {
  font-size: 10px;
  color: #505060;
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

.gs-val {
  font-size: 12px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: #c0c0d0;
}

.gs-val.gold { color: #e8c050; }
.gs-val.red  { color: #cc5050; }
.gs-val.blue { color: #5aacdc; }

/* Mode meta row */

.mode-meta {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 10px 16px;
  border-bottom: 1px solid #1c1c28;
  font-size: 12px;
  background: #0e0e18;
}

.meta-label {
  color: #44445a;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

.meta-sep { color: #2a2a3a; }

.stat-value {
  color: #e0b840;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  font-size: 12px;
}

.stat-value.green { color: #4abd5a; }
.stat-value.red   { color: #cc5050; }
.stat-value.blue  { color: #5aacdc; }

/* Mode panel */

#mode-panel {
  flex: 1;
  padding: 14px 16px;
  font-size: 12.5px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

#mode-panel h2 {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #44445a;
  padding: 10px 0 6px;
  border-top: 1px solid #1a1a26;
  margin-top: 6px;
}

#mode-panel h2:first-child {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}

.stat {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 5px 0;
  border-bottom: 1px solid #191924;
  font-size: 12px;
}

.stat-label { color: #666680; font-size: 11.5px; }

.panel-intro {
  font-size: 11.5px;
  color: #7878a0;
  line-height: 1.6;
  background: #111119;
  border: 1px solid #1e1e2c;
  border-radius: 4px;
  padding: 9px 11px;
}

.panel-intro b { color: #a8a8c8; }

.panel-intro code {
  font-family: ui-monospace, monospace;
  font-size: 10.5px;
  background: #1a1a28;
  padding: 1px 5px;
  border-radius: 3px;
  color: #9090c0;
}

.list {
  max-height: 30vh;
  overflow-y: auto;
  border: 1px solid #1e1e2c;
  border-radius: 4px;
  background: #0e0e18;
}

.item {
  padding: 6px 10px;
  border-bottom: 1px solid #1a1a26;
  cursor: pointer;
  font-size: 11.5px;
  transition: background .1s;
}

.item:hover { background: #181826; }
.item.active { background: #1e1e32; border-left: 3px solid #e0b840; }
.item:last-child { border-bottom: none; }

.note {
  font-size: 11px;
  color: #555570;
  line-height: 1.5;
  margin-top: 6px;
}

.legend {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  color: #555570;
  margin-top: 4px;
}

.grad {
  flex: 1;
  height: 9px;
  border-radius: 4px;
  background: linear-gradient(90deg,
    hsl(0,65%,52%), hsl(50,68%,52%), hsl(120,60%,46%),
    hsl(180,62%,50%), hsl(220,68%,54%));
}

.orbit-chip {
  display: inline-block;
  width: 9px; height: 9px;
  border-radius: 50%;
  margin-right: 5px;
  vertical-align: middle;
}

/* ── Col 3: árvore de loops (só Simetria) ──────────────────── */

#tree-col {
  display: none;
  flex: 0 0 460px;
  flex-direction: column;
  gap: 10px;
  padding: 18px 20px;
  border-right: 1px solid #1c1c28;
  overflow-y: auto;
  max-height: 100vh;
}

#tree-col.visible {
  display: flex;
}

.tree-col-header {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: #44445a;
  padding-bottom: 10px;
  border-bottom: 1px solid #1c1c28;
}

#tree-canvas {
  display: block;
  background: #10101a;
  border: 1px solid #20202e;
  border-radius: 8px;
  cursor: pointer;
  width: 420px;
}

#tree-controls {
  display: flex;
  gap: 5px;
  align-items: center;
  flex-wrap: wrap;
}

#counter {
  font-size: 11.5px;
  color: #c0c0d8;
  font-variant-numeric: tabular-nums;
  margin-left: auto;
  background: #111119;
  padding: 5px 9px;
  border-radius: 4px;
  border: 1px solid #1e1e2c;
}

#counter b { color: #e0b840; }

.tree-note {
  font-size: 11.5px;
  color: #7878a0;
  line-height: 1.6;
  padding: 10px 13px;
  background: #111119;
  border: 1px solid #1e1e2c;
  border-left: 3px solid #e0b840;
  border-radius: 4px;
}

.tree-note b { color: #c0c0d8; }

/* ── Botões ─────────────────────────────────────────────────── */

button {
  background: #141420;
  color: #a8a8c0;
  border: 1px solid #24243a;
  padding: 5px 11px;
  border-radius: 5px;
  cursor: pointer;
  font-size: 11.5px;
  transition: background .1s, border-color .1s, color .1s;
  white-space: nowrap;
}

button:hover:not(:disabled) {
  background: #1c1c2c;
  border-color: #34344e;
  color: #c8c8e0;
}

button:disabled { opacity: 0.35; cursor: not-allowed; }

button.active {
  background: #253888;
  border-color: #3a54c0;
  color: #d8d8f0;
}

/* ── Hover tooltip ──────────────────────────────────────────── */

#hover-tooltip {
  position: fixed;
  pointer-events: none;
  background: #161622;
  color: #c8c8dc;
  border: 1px solid #282840;
  border-radius: 4px;
  padding: 5px 9px;
  font-size: 11px;
  font-family: ui-monospace, monospace;
  z-index: 100;
  display: none;
}

/* ── Erro ───────────────────────────────────────────────────── */

#error {
  color: #cc6644;
  padding: 24px;
  max-width: 600px;
  line-height: 1.65;
  font-size: 13px;
}

#error code {
  background: #181824;
  padding: 2px 6px;
  border-radius: 3px;
  font-family: ui-monospace, monospace;
  font-size: 12px;
}

/* ── Nota de contexto sob o tabuleiro ───────────────────────── */

#ctx-note {
  max-width: 560px;
  font-size: 11.5px;
  line-height: 1.6;
  color: #7c7c92;
  border-top: 1px solid #1c1c28;
  padding-top: 10px;
  margin-top: 4px;
}

#ctx-note b { color: #a9a9bd; font-weight: 600; }

#ctx-note a {
  color: #d8a852;
  text-decoration: none;
  border-bottom: 1px solid rgba(216, 168, 82, 0.3);
}

#ctx-note a:hover {
  color: #f0bf67;
  border-bottom-color: rgba(240, 191, 103, 0.6);
}

#ctx-note .sep { color: #3a3a4a; margin: 0 4px; }

/* ══════════════════════════════════════════════════════════════
   Responsividade

   O layout base é de três colunas lado a lado, pensado para telas
   largas. Abaixo, ele degrada em etapas: primeiro a árvore de loops
   quebra para a linha de baixo, depois o painel de informações, e por
   fim tudo vira uma coluna só.
   ══════════════════════════════════════════════════════════════ */

body {
  width: auto;
  max-width: 100%;
  flex-wrap: wrap;
}

#board-col,
#info-col,
#tree-col {
  min-width: 0;
}

/* Larguras fixas de 560px/420px herdadas do layout desktop: viram teto,
   nao piso, para nao estourar a viewport em telas estreitas. */
#controls,
.board-note {
  width: 100%;
  max-width: 560px;
}

#tree-controls {
  max-width: 420px;
  flex-wrap: wrap;
}

#board-col {
  max-width: 100%;
  flex: 0 0 auto;
}

/* O canvas é desenhado em coordenadas fixas e escalado por CSS.
   O mapeamento de mouse já normaliza por rect.width, então o hover
   continua correto em qualquer tamanho. */
#canvas {
  width: 100%;
  max-width: 560px;
  height: auto;
  aspect-ratio: 1 / 1;
}

#tree-canvas {
  width: 100%;
  max-width: 420px;
  height: auto;
  aspect-ratio: 420 / 460;
}

#ctx-note {
  max-width: 560px;
  width: 100%;
}

/* ── Até 1360px: a árvore de loops desce para a linha seguinte ── */

@media (max-width: 1360px) {
  #tree-col {
    flex: 1 1 100%;
    max-height: none;
    border-right: 0;
    border-top: 1px solid #1c1c28;
  }
}

/* ── Até 1000px: o painel de informações desce também ─────────── */

@media (max-width: 1000px) {
  body {
    flex-direction: column;
    width: 100%;
  }

  #board-col {
    /* empilhado, a coluna ocupa a largura toda e nao estica na vertical
       (esticar abria um vao entre a nota e o painel de estatisticas) */
    flex: 0 0 auto;
    width: 100%;
    border-right: 0;
    border-bottom: 1px solid #1c1c28;
  }

  #info-col {
    flex: 1 1 auto;
    max-height: none;
    overflow-y: visible;
    border-right: 0;
    border-bottom: 1px solid #1c1c28;
  }

  #tree-col {
    border-top: 0;
  }

  /* Empilhado, a nota de contexto não precisa ser empurrada ao fim */
  #ctx-note {
    margin-top: 12px;
  }
}

/* ── Até 620px: aperta o respiro e solta o tabuleiro ──────────── */

@media (max-width: 620px) {
  #board-col,
  #tree-col {
    padding: 12px;
  }

  #global-stats {
    padding: 12px;
  }

  #canvas {
    max-width: none;
  }

  #ctx-note {
    max-width: none;
    font-size: 11px;
  }
}

/* ── Ponteiro grosso (toque): sem tooltip de hover ────────────── */

@media (hover: none) {
  #hover-tooltip { display: none !important; }
}