/* Course tokens/header/footer are shared; laboratory layout stays local. */
.am-workspace { max-width: 1600px; margin: auto; padding: 1.25rem; }
.am-intro { margin-bottom: 1rem; }
.am-intro h1 { font-size: clamp(1.8rem, 3vw, 2.6rem); }
.am-intro p { margin: .25rem 0; }
.am-dashboard { display: grid; grid-template-columns: minmax(245px, .72fr) minmax(0, 1fr) minmax(0, 1.3fr); gap: 1rem; align-items: start; }
.am-panel { padding: 1rem; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); min-width: 0; }
.am-panel h2 { font-size: 1.15rem; margin: 0 0 .7rem; }
.am-panel p { margin: .6rem 0; }
.am-panel [hidden] { display: none !important; }
.am-small, .am-panel figcaption, .am-panel table { font-size: .875rem; }
.am-small { color: var(--muted); line-height: 1.5; }
.am-controls { grid-row: span 2; }
.am-controls select { width: 100%; margin: .4rem 0; padding: .4rem; }
.am-panel fieldset { border: 0; padding: 0; margin: .7rem 0; }
.am-panel legend { font-weight: 700; }
.am-panel fieldset label { display: block; padding: .15rem 0; }
.am-panel input[type="radio"] { accent-color: var(--blue); width: 1rem; height: 1rem; }
.am-slider { display: block; margin-top: .6rem; font-size: .875rem; }
.am-slider output { float: right; font-variant-numeric: tabular-nums; font-weight: 700; }
.am-slider input { display: block; width: 100%; min-height: 26px; accent-color: var(--blue); }
.am-panel button { border: 1px solid var(--line); border-radius: 8px; padding: .5rem .7rem; background: #eef5ff; color: var(--blue-dark); }
.am-panel figure { margin: .6rem 0; }
.am-panel figcaption { font-weight: 650; }
.am-panel canvas { display: block; width: 100%; height: 125px; background: #fbfdff; }
.am-panel canvas[data-plot="transmitted"] { height: 170px; }
.am-panel canvas[data-plot="spectrum"] { height: 270px; }
.am-panel canvas[data-plot="receiver"] { height: 145px; }
.am-flow { padding: 0; margin: .5rem 0; display: flex; flex-wrap: wrap; gap: .4rem; list-style: none; font-size: .875rem; }
.am-flow li:not(:last-child)::after { content: ' →'; color: var(--blue); }
.am-components { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .4rem; }
.am-components > div { border: 1px solid var(--blue); padding: .45rem; text-align: center; border-radius: 6px; }
.am-components span { display: block; font-size: .875rem; }
.am-components .removed { border-style: dashed; border-color: var(--muted); background: #f2f4f7; }
.am-components .removed strong { text-decoration: line-through; }
.am-table-wrap { overflow-x: auto; }
.am-panel table { border-collapse: collapse; width: 100%; line-height: 1.35; }
.am-panel th, .am-panel td { padding: .45rem; border-bottom: 1px solid var(--line); text-align: left; }
.am-panel caption { text-align: left; margin: .5rem 0; color: var(--muted); }
.am-metrics { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .8rem; margin: 0; }
.am-metrics dt { font-size: .875rem; color: var(--muted); }
.am-metrics dd { margin: 0; font-size: 1.05rem; font-weight: 750; font-variant-numeric: tabular-nums; }
.am-inline { display: flex; flex-wrap: wrap; gap: .8rem; }
.am-details-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1rem; }
.am-assumptions { grid-column: 1 / -1; }
details.am-panel { margin-top: 1rem; }
.am-details-grid details { margin-top: 0; }
.am-panel summary { cursor: pointer; font-weight: 750; }
.am-panel li { margin-block: .4rem; }
.am-equations { overflow-wrap: anywhere; }
[data-wave="over"] { padding: .6rem; background: #fff1f0; border-left: 3px solid var(--red); }
@media (max-width: 1000px) {
  .am-dashboard { grid-template-columns: minmax(230px, .65fr) minmax(0, 1fr); }
  .am-controls { grid-row: span 2; }
  .am-spectrum { grid-column: 2; }
}
@media (max-width: 700px) {
  .am-workspace { padding: .8rem; }
  .am-dashboard, .am-details-grid { grid-template-columns: minmax(0, 1fr); }
  .am-controls, .am-spectrum, .am-assumptions { grid-column: auto; grid-row: auto; }
  .am-controls { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: .2rem .8rem; }
  .am-controls > h2, .am-controls > label[for="preset"], .am-controls > select, .am-controls > p, .am-controls > button { grid-column: 1 / -1; }
  .am-controls fieldset { font-size: .875rem; }
  .am-slider output { float: none; display: block; }
  .am-panel { padding: .8rem; }
}