/* Shared controls and flag icons live in /assets/shared/controls.css. */

.intro-panel { padding: .9rem 1rem; }

main {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 1rem;
  margin-bottom: 0;
  align-items: start;
}

.panel-controls {
  grid-column: 1;
  grid-row: 1 / span 2;
}

.panel-sim-output {
  grid-column: 2;
  grid-row: 1;
}

.panel-items {
  grid-column: 2;
  grid-row: 2;
}

.panel-sim-output.hidden + .panel-items {
  grid-row: 1;
}

.panel-header {
  gap: .7rem;
  flex-wrap: wrap;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .7rem;
}

.grid-2-span {
  grid-column: 1 / -1;
}

input[type='number'], input[type='text'] {
  width: 100%;
  padding: .4rem .55rem;
  font-size: var(--txt-md, .82rem);
}

textarea {
  width: 100%;
  padding: .5rem .6rem;
  font-size: var(--txt-sm-plus, .8rem);
  min-height: 110px;
  resize: vertical;
}

input[type='number']::-webkit-outer-spin-button,
input[type='number']::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

input[type='number'] {
  appearance: textfield;
  -moz-appearance: textfield;
}

.stepper-container {
  display: flex;
}

.view-toggle-label {
  font-size: var(--txt-xs, .74rem);
  font-weight: var(--txt-w-semibold, 600);
  letter-spacing: .03em;
  color: var(--clr-muted);
  text-transform: uppercase;
}

.panel-header .view-toggle-label {
  margin-left: auto;
}

.chart-modal-actions .view-toggle-label {
  margin-right: .1rem;
}

.sim-output-header h2 {
  color: var(--clr-primary);
}

.sim-results-body {
  padding: .9rem 1rem 1rem;
}

.sim-badges {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .65rem;
  margin-bottom: .85rem;
}

.sim-badge {
  border: 1px solid var(--clr-border);
  border-radius: 10px;
  padding: .7rem .8rem;
  background: color-mix(in oklab, var(--clr-chart-bg) 86%, var(--clr-surface));
  box-shadow: var(--shadow-soft-card);
}

.sim-badge.delta {
  border-color: color-mix(in oklab, var(--clr-primary) 38%, var(--clr-border));
  background: color-mix(in oklab, var(--clr-chart-bg) 72%, var(--clr-primary) 28%);
}

.sim-badge-label {
  display: block;
  font-size: var(--txt-xs, .72rem);
  font-weight: var(--txt-w-bold, 700);
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--clr-muted);
  margin-bottom: .25rem;
}

.sim-badge-value {
  display: block;
  font-size: var(--txt-base-plus, 1rem);
  font-weight: var(--txt-w-bold, 700);
  color: var(--clr-text);
}

.sim-method #method-title {
  font-size: var(--txt-sm, .78rem);
  font-weight: var(--txt-w-semibold, 600);
  color: var(--clr-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
  margin: 0 0 .3rem;
}
.sim-method #method-text {
  font-size: var(--txt-sm, .78rem);
  color: var(--clr-muted);
  line-height: var(--txt-lh-relaxed);
  margin: 0;
}
.model-indicator {
  font-size: var(--txt-xs, .72rem);
  color: var(--clr-muted);
  margin: .2rem 0 0;
}

.sim-hist-block .chart-wrap {
  height: 220px;
}

#sim-hist-canvas {
  background: var(--clr-chart-bg);
  border-radius: 10px;
  display: block;
  touch-action: none;
}

.sim-hist-headline {
  margin-bottom: .4rem;
}

.sim-hist-block {
  padding: 0;
  overflow: visible;
  border: 0;
  border-radius: 0;
}

.preset-block {
  display: flex;
  flex-direction: column;
  gap: .4rem;
}

.preset-label {
  font-size: var(--txt-sm, .78rem);
  color: var(--clr-muted);
  white-space: nowrap;
}

.section-label {
  font-size: var(--txt-sm-plus, .8rem);
  font-weight: var(--txt-w-bold, 700);
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--clr-primary);
}

.preset-btns {
  display: flex;
  gap: .35rem;
}

.controls-row {
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

/* Wrapper is the flex child — takes only button height, no extra.
   Status text is absolutely positioned below the button; nothing in
   the flow moves when it appears or disappears. */
.run-btn-wrap {
  position: relative;
}
.run-btn-wrap .sim-progress {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: .15rem;
  min-height: 0;
  pointer-events: none;
}

.preset-block .preset-btns {
  width: 100%;
}

.preset-block .preset-btns .btn-sm {
  white-space: nowrap;
}

.bulk-block details {
  width: 100%;
}

.bulk-block summary {
  cursor: pointer;
  list-style: none;
  display: inline-flex;
  align-items: center;
}

.bulk-block summary::-webkit-details-marker {
  display: none;
}

.bulk-block summary::before {
  content: '▸';
  margin-right: .35rem;
  color: var(--clr-muted);
}

.bulk-block details[open] summary::before {
  content: '▾';
}

.bulk-block details[open] textarea {
  margin-top: .55rem;
}

.bulk-block .hint {
  margin-bottom: .45rem;
}

.bulk-actions {
  margin-top: .5rem;
  justify-content: flex-end;
}

.bulk-errors {
  margin: .45rem 0 0;
  padding-left: 1rem;
  color: var(--clr-danger);
  font-size: var(--txt-sm, .76rem);
}

.bulk-errors li + li {
  margin-top: .18rem;
}

.item-forms {
  padding: .75rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: .65rem;
}
.item-card {
  border: 1px solid color-mix(in oklab, var(--clr-border) 70%, transparent);
  border-radius: 8px;
  padding: .65rem;
  background: color-mix(in oklab, var(--clr-surface) 90%, var(--clr-bg));
}
.item-card h3 {
  margin-bottom: .5rem;
}
.item-row { display: grid; grid-template-columns: 1fr 1fr; gap: .45rem; margin-bottom: .4rem; }

.item-chart-wrap {
  margin-top: .55rem;
  border: 0;
  border-radius: 0;
  background: transparent;
  overflow: visible;
  cursor: pointer;
}

.item-chart-canvas {
  padding: 0;
  background: transparent;
  height: 140px;
}

.item-chart-canvas canvas {
  display: block;
  height: 100%;
  background: var(--clr-chart-bg);
  border-radius: 10px;
}

.chart-modal-overlay {
  z-index: 1200;
  background: var(--clr-overlay-strong);
}

.chart-modal {
  width: min(92vw, 980px);
  height: min(84vh, 760px);
  border-radius: 14px;
  padding: .9rem;
}
.chart-modal-head {
  margin-bottom: .6rem;
  gap: .75rem;
}

.chart-modal-actions {
  display: flex;
  align-items: center;
  gap: .55rem;
}

.chart-modal-actions .view-toggle {
  margin-left: 0;
}
#chart-modal-canvas {
  height: auto !important;
  flex: 1 1 auto;
  min-height: 0;
  border-radius: 10px;
}

.site-footer {
  margin-top: 1.75rem;
}

@media (max-width: 900px) {
  main {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .panel-controls,
  .panel-sim-output,
  .panel-items {
    grid-column: auto;
    grid-row: auto;
  }

  .item-forms {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  }
}

@media (max-width: 500px) {
  .panel-header .view-toggle-label {
    width: 100%;
    margin-left: 0;
    margin-bottom: .2rem;
  }

  .chart-modal-actions .view-toggle-label {
    width: 100%;
    margin-right: 0;
    margin-bottom: .2rem;
  }

  .item-forms { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .sim-badges { grid-template-columns: 1fr; }
  .item-row { grid-template-columns: 1fr; }
  .item-chart-canvas { height: 124px; }
  .chart-modal { width: min(96vw, 680px); height: min(86dvh, 760px); }
  .chart-modal-head {
    align-items: flex-start;
  }
  .chart-modal-actions {
    width: 100%;
    justify-content: space-between;
    flex-wrap: wrap;
  }
}