/* Driving Problem */

.dp-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px;
}

.page-title {
  margin-top: 2em;
  margin-bottom: 0.3em;
}

.dp-hr {
  border: none;
  border-top: 1px solid #ddd;
  margin: 0.8em 0;
}

.section-label {
  font-size: 12px;
  color: #888;
  letter-spacing: 1px;
  text-transform: none;
  margin-bottom: 8px;
}

/* Math callout */
.math-box {
  background: #fafafa;
  border: 1px solid #e8e8e8;
  border-radius: 6px;
  padding: 10px 16px 8px;
  margin-bottom: 0.4em;
}

.math-row {
  display: flex;
  gap: 2em;
  flex-wrap: wrap;
  align-items: flex-start;
}

.math-cell {
  min-width: 0;
}

.math-sublabel {
  font-size: 0.78em;
  color: #aaa;
  margin-bottom: 2px;
}

/* Param rows */
.param-col { display: flex; flex-direction: column; gap: 4px; }

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

.param-desc {
  font-size: 0.82em;
  color: #888;
  min-width: 8em;
  text-align: right;
}

.param-label {
  font-size: 1.05em;
  min-width: 2.2em;
  text-align: right;
}

.param-slider {
  width: 130px;
  flex-shrink: 0;
  accent-color: #555;
}

.param-value {
  font-size: 0.92em;
  min-width: 4em;
  font-family: Monaco, Consolas, "Courier New", monospace;
}

/* Toggle buttons */
.btn-group {
  display: flex;
  border: 1px solid #ccc;
  border-radius: 4px;
  overflow: hidden;
}

.toggle-btn {
  padding: 5px 12px;
  background: #f8f8f8;
  border: none;
  border-right: 1px solid #ccc;
  cursor: pointer;
  font-size: 0.88em;
  color: #555;
  transition: background 0.12s;
}
.toggle-btn:last-child { border-right: none; }
.toggle-btn:hover      { background: #eee; color: #222; }
.toggle-btn.active     { background: #555; color: #fff; }

/* Sim controls */
.controls-row {
  display: flex;
  align-items: center;
  gap: 0.6em;
  flex-wrap: wrap;
}

.sim-button {
  padding: 6px 14px;
  background-color: #f0f0f0;
  border: 1px solid #ccc;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  transition: background-color 0.15s;
}
.sim-button:hover  { background-color: #e0e0e0; }
.sim-button:active { background-color: #d0d0d0; }

.steps-display {
  margin-left: auto;
  font-size: 0.85em;
  color: #aaa;
  font-family: Monaco, Consolas, "Courier New", monospace;
}

/* Plots */
.plot-canvas-box {
  position: relative;
}

/* Stats bar */
.stats-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

.stat-pill {
  font-size: 0.82em;
  background: #f4f4f4;
  border: 1px solid #e0e0e0;
  border-radius: 4px;
  padding: 2px 8px;
  color: #555;
  font-family: Monaco, Consolas, "Courier New", monospace;
}
.stat-pill strong { color: #222; }

/* Weight matrices */
.matrices-row {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 2em;
}

.matrix-section {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.matrix-section-label {
  font-size: 0.8em;
  color: #888;
  font-style: italic;
}

.matrix-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: flex-start;
}

.matrix-box {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.matrix-label {
  font-size: 0.78em;
  color: #999;
  margin-bottom: 3px;
  font-family: Monaco, Consolas, "Courier New", monospace;
}

.matrix-range {
  font-size: 0.72em;
  color: #bbb;
  margin-top: 2px;
  font-family: Monaco, Consolas, "Courier New", monospace;
}