.probability-tree-table .ptt-tabs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.probability-tree-table .ptt-tab {
  border: 1px solid #b7c4d6;
  border-radius: 999px;
  padding: 0.55rem 0.9rem;
  background: #fff;
  color: #1f2a44;
  cursor: pointer;
  font-weight: 600;
}

.probability-tree-table .ptt-tab[aria-selected="true"] {
  background: #0b57d0;
  color: #fff;
  border-color: #0b57d0;
}

.probability-tree-table .ptt-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.probability-tree-table .ptt-chip {
  border: 1px solid #d0d7e3;
  border-radius: 999px;
  background: #f9fbff;
  padding: 0.35rem 0.65rem;
  cursor: pointer;
}

.probability-tree-table .ptt-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1.25rem;
}

.probability-tree-table.teacher {
  font-size: 1.05rem;
}

.probability-tree-table.teacher .ptt-result-main {
  font-size: 1.35rem;
}

.probability-tree-table.teacher .ptt-layout {
  grid-template-columns: 1fr;
}

.probability-tree-table .ptt-teacher-only {
  display: none;
}

.probability-tree-table.teacher .ptt-teacher-only {
  display: block;
}

.probability-tree-table .ptt-layout .card {
  margin-bottom: 1rem;
}

.probability-tree-table label.ptt-field,
.probability-tree-table .ptt-cond-row select,
.probability-tree-table .ptt-cond-row button,
.probability-tree-table .ptt-stage .button,
.probability-tree-table .ptt-stage input,
.probability-tree-table .ptt-2x2 input,
.probability-tree-table .ptt-settings input,
.probability-tree-table .ptt-settings select {
  font-size: 0.95rem;
}

.probability-tree-table .ptt-settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.75rem 1rem;
  align-items: end;
}

.probability-tree-table .ptt-validation {
  border: 1px solid #f1b5bd;
  background: #fff6f7;
  color: #8a1c2a;
  border-radius: 12px;
  padding: 0.75rem 1rem;
}

.probability-tree-table .ptt-validation ul {
  margin: 0;
  padding-left: 1.2rem;
}

.probability-tree-table .ptt-result-main {
  font-size: 1.1rem;
  font-weight: 700;
  color: #16243a;
}

.probability-tree-table .ptt-complement {
  border: 1px solid #d0d7e3;
  background: #f9fbff;
  border-radius: 12px;
  padding: 0.75rem 1rem;
  margin-top: 0.75rem;
}

.probability-tree-table .ptt-complement label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.probability-tree-table .ptt-stage {
  border: 1px solid #d0d7e3;
  border-radius: 12px;
  padding: 0.75rem 1rem;
  background: #f9fbff;
  margin-top: 0.75rem;
}

.probability-tree-table .ptt-stage legend {
  padding: 0 0.5rem;
  font-weight: 700;
  color: #1f3a5f;
}

.probability-tree-table .ptt-outcomes {
  display: grid;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.probability-tree-table .ptt-outcome-row {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 0.5rem;
  align-items: end;
}

.probability-tree-table .ptt-field {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.probability-tree-table .ptt-field span {
  font-weight: 600;
  color: #25324a;
}

.probability-tree-table input[type="text"],
.probability-tree-table input[type="number"],
.probability-tree-table select {
  width: 100%;
  border: 1px solid #b7c4d6;
  border-radius: 8px;
  padding: 0.55rem 0.65rem;
  background: #fff;
}

.probability-tree-table input:focus,
.probability-tree-table select:focus {
  outline: 2px solid #4b82f5;
  outline-offset: 0;
}

.probability-tree-table .ptt-invalid {
  border-color: #a83240 !important;
  box-shadow: 0 0 0 2px rgba(168, 50, 64, 0.15);
}

.probability-tree-table .ptt-stage-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-top: 0.75rem;
}

.probability-tree-table .ptt-stage-sum {
  margin-left: auto;
  color: #2b3c5a;
}

.probability-tree-table .ptt-builder {
  display: grid;
  gap: 0.75rem;
}

.probability-tree-table .ptt-group {
  border: 1px solid #d0d7e3;
  border-radius: 12px;
  padding: 0.75rem 1rem;
  background: #fff;
}

.probability-tree-table .ptt-group-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
}

.probability-tree-table .ptt-group-title {
  font-weight: 700;
  color: #1f3a5f;
}

.probability-tree-table .ptt-cond-list {
  display: grid;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.probability-tree-table .ptt-cond-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto;
  gap: 0.5rem;
  align-items: center;
}

.probability-tree-table .ptt-or {
  text-align: center;
  font-weight: 700;
  color: #4c5d7a;
}

.probability-tree-table .ptt-group-footer {
  margin-top: 0.75rem;
  display: flex;
  justify-content: flex-start;
}

.probability-tree-table .ptt-expr-preview {
  font-family: "Roboto Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.95rem;
  color: #16243a;
}

.probability-tree-table .ptt-svg-scroll {
  overflow: auto;
  border: 1px solid #d0d7e3;
  border-radius: 12px;
  background: #fff;
}

.probability-tree-table .ptt-svg {
  display: block;
  width: 100%;
  height: auto;
  min-width: 640px;
}

.probability-tree-table .ptt-leaf-table,
.probability-tree-table .ptt-2x2 {
  width: 100%;
  border-collapse: collapse;
}

.probability-tree-table .ptt-leaf-table th,
.probability-tree-table .ptt-leaf-table td,
.probability-tree-table .ptt-2x2 th,
.probability-tree-table .ptt-2x2 td {
  border: 1px solid #d0d7e3;
  padding: 0.5rem 0.6rem;
  text-align: left;
}

.probability-tree-table .ptt-leaf-table tr.selected,
.probability-tree-table .ptt-2x2 td.selected {
  background: #eaf1ff;
}

.probability-tree-table .ptt-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.75rem;
  margin-top: 0.75rem;
}

.probability-tree-table .ptt-metric {
  border: 1px solid #d0d7e3;
  border-radius: 12px;
  padding: 0.75rem 0.9rem;
  background: #f9fbff;
}

.probability-tree-table .ptt-metric-key {
  font-weight: 700;
  color: #1f3a5f;
}

.probability-tree-table .ptt-metric-val {
  margin-top: 0.25rem;
  color: #16243a;
}

.probability-tree-table .mono {
  font-family: "Roboto Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

.probability-tree-table .ptt-steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.6rem;
  counter-reset: pttstep;
}

.probability-tree-table .ptt-step {
  position: relative;
  border: 1px solid #d0d7e3;
  border-radius: 12px;
  padding: 0.75rem 0.9rem 0.75rem 2.7rem;
  background: #fff;
}

.probability-tree-table .ptt-step::before {
  counter-increment: pttstep;
  content: counter(pttstep);
  position: absolute;
  left: 0.75rem;
  top: 0.7rem;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 999px;
  background: #0b57d0;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
}

.probability-tree-table .ptt-step-title {
  font-weight: 700;
  color: #1f3a5f;
}

.probability-tree-table .ptt-step-msg {
  margin-top: 0.25rem;
  color: #283754;
  line-height: 1.5;
}

.probability-tree-table .ptt-step-list {
  margin: 0.5rem 0 0;
  padding-left: 1.2rem;
  color: #2b3c5a;
}

@media (max-width: 1024px) {
  .probability-tree-table .ptt-layout {
    grid-template-columns: 1fr;
  }
  .probability-tree-table .ptt-outcome-row {
    grid-template-columns: 1fr;
  }
  .probability-tree-table .ptt-cond-row {
    grid-template-columns: 1fr;
  }
  .probability-tree-table .ptt-stage-footer {
    flex-direction: column;
    align-items: stretch;
  }
  .probability-tree-table .ptt-stage-sum {
    margin-left: 0;
  }
}