/* --- Simulations page: interacting particle systems lab --- */

.mario-app section#page-banner.sim-banner {
  padding-bottom: 1.5rem;
}

.ips-prose {
  max-width: 780px;
  margin: 0 auto;
  line-height: 1.65;
}

.ips-prose h2 {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

.ips-prose h3 {
  font-size: 1.25rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.ips-prose ul {
  padding-left: 1.2rem;
}

.ips-prose li {
  margin-bottom: 0.4rem;
}

.ips-prose .katex-display {
  overflow-x: auto;
  overflow-y: hidden;
  padding: 0.25rem 0;
}

.ips-try {
  background: transparent;
  border: 1px solid #0C1A2E;
  border-radius: 999px;
  padding: 0.35rem 1.1rem;
  font-size: 0.82rem;
  color: #0C1A2E;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.ips-try:hover {
  background: #0C1A2E;
  color: #EFD99A;
}

/* the lab itself */

.ips-lab {
  margin: 2rem 0 1rem;
  padding: 1.25rem;
  background: #fff;
  border: 0.5px solid #DDE3ED;
  border-radius: 10px;
  box-shadow: 0 2px 12px rgba(12, 26, 46, 0.08);
  scroll-margin-top: 1rem;
}

.ips-model-bar {
  justify-content: flex-start;
}

.ips-rate-line {
  margin-top: 0.75rem;
  font-size: 0.9rem;
  color: #495057;
  overflow-x: auto;
  overflow-y: hidden;
}

.ips-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.9rem 1.75rem;
  margin-top: 1.1rem;
}

.ips-field {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin: 0;
  font-size: 0.82rem;
  color: #495057;
}

.ips-field b {
  color: #0C1A2E;
  font-weight: 500;
}

.ips-field input[type=range] {
  width: 100%;
  accent-color: #0C1A2E;
}

.ips-field select {
  font-size: 0.85rem;
  padding: 0.25rem 0.4rem;
  border: 1px solid #DDE3ED;
  border-radius: 6px;
  background: #fff;
  color: #0C1A2E;
}

.ips-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 1.25rem;
  margin-top: 1.1rem;
}

.ips-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  color: #495057;
}

.ips-btn {
  background: #0C1A2E;
  border: 1px solid #0C1A2E;
  border-radius: 6px;
  padding: 0.3rem 0.8rem;
  font-size: 0.82rem;
  color: #F0F4FA;
  cursor: pointer;
}

.ips-btn:hover {
  color: #EFD99A;
}

.ips-btn.ghost {
  background: transparent;
  color: #0C1A2E;
}

.ips-btn.ghost:hover {
  background: #0C1A2E;
  color: #EFD99A;
}

.ips-seg {
  display: inline-flex;
  border: 1px solid #0C1A2E;
  border-radius: 6px;
  overflow: hidden;
}

.ips-seg button {
  background: transparent;
  border: none;
  padding: 0.3rem 0.7rem;
  font-size: 0.8rem;
  color: #0C1A2E;
  cursor: pointer;
}

.ips-seg button + button {
  border-left: 1px solid #0C1A2E;
}

.ips-seg button.active {
  background: #0C1A2E;
  color: #EFD99A;
}

/* status line under the controls */

.ips-status {
  margin-top: 1.1rem;
  padding-top: 0.8rem;
  border-top: 0.5px solid #DDE3ED;
  font-size: 0.82rem;
  color: #6c757d;
}

.ips-status b {
  color: #0C1A2E;
  font-weight: 500;
}

.ips-status .warn {
  color: #854F0B;
}

/* one dark card per graph, separated by white gutters */

.ips-panels {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.1rem;
  margin-top: 1rem;
}

.ips-panel {
  margin: 0;
  padding: 0.9rem 1rem 1rem;
  background: #0C1A2E;
  border-radius: 8px;
  color: #F0F4FA;
  min-width: 0;
}

.ips-panel.ips-full {
  grid-column: 1 / -1;
}

.ips-panel-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: 0.4rem 1.5rem;
  margin-bottom: 0.7rem;
}

.mario-app .ips-panel-title {
  font-size: 1.05rem;
  color: #EFD99A;
  margin: 0 0 0.15rem;
}

.ips-panel-sub {
  font-size: 0.8rem;
  color: #8BA3C0;
  margin: 0;
}

.ips-legend {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.3rem 1rem;
  font-size: 0.76rem;
  color: #8BA3C0;
}

.ips-legend b {
  color: #F0F4FA;
  font-weight: 500;
}

.ips-legend label {
  margin: 0;
  cursor: pointer;
}

.ips-legend input {
  accent-color: #EFD99A;
  vertical-align: -1px;
  margin-right: 0.35rem;
}

.sw {
  display: inline-block;
  width: 14px;
  height: 3px;
  border-radius: 2px;
  margin-right: 0.4rem;
  vertical-align: middle;
}

.sw-gold { background: #EFD99A; }
.sw-white { background: #F0F4FA; }
.sw-dot { background: rgba(143, 179, 220, 0.9); height: 8px; width: 8px; }
.sw-band { background: rgba(239, 217, 154, 0.25); border: 1px dashed rgba(239, 217, 154, 0.8); height: 10px; }
.sw-dash { background: repeating-linear-gradient(90deg, rgba(143, 179, 220, 0.8) 0 4px, transparent 4px 7px); }

.ips-panel canvas {
  display: block;
  width: 100%;
}

#ips-particles { height: 300px; }
#ips-fluct, #ips-hist { height: 170px; }
#ips-kymo, #ips-order { height: 210px; }

.ips-kymo-wrap {
  position: relative;
}

.ips-kymo-wrap span {
  position: absolute;
  left: 6px;
  font-size: 0.72rem;
  color: #F0F4FA;
  background: rgba(12, 26, 46, 0.7);
  padding: 0 4px;
  border-radius: 3px;
  pointer-events: none;
}

#ips-kymo-top { top: 4px; }
#ips-kymo-bottom { bottom: 4px; }

#ips-rate {
  display: inline-block;
  white-space: nowrap;
}

@media (max-width: 767px) {
  .ips-lab { padding: 0.9rem; }
  .ips-panels { grid-template-columns: 1fr; gap: 0.9rem; }
  .ips-panel { padding: 0.8rem 0.8rem 0.9rem; }
  #ips-particles { height: 240px; }
}

/* the talk photo next to the introduction */
.ips-photo {
  float: right;
  width: 230px;
  margin: 0.35rem 0 1rem 1.6rem;
}

.ips-photo img {
  display: block;
  width: 100%;
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(12, 26, 46, 0.12);
}

.ips-photo figcaption {
  margin-top: 0.5rem;
  font-size: 0.78rem;
  line-height: 1.45;
  color: #6c757d;
}

@media (max-width: 767px) {
  .ips-photo {
    float: none;
    width: auto;
    max-width: 300px;
    margin: 0 auto 1.4rem;
  }
}