/* Specialty Digest Academy lesson styles. Extends vl-core.css (Virtual Lab framework). Scoped under .ac. */
.ac .ac-course{font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:#8FB8FF;margin:0 0 10px}
.ac .ac-tag{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;border-radius:4px;padding:2px 8px;margin-right:8px;vertical-align:middle}
.ac .ac-tag.f{background:rgba(88,205,112,.22);color:#14532D}
.ac .ac-tag.c{background:var(--vl-alt);color:var(--vl-blue-d)}
.ac .ac-tag.x{background:rgba(245,185,66,.28);color:var(--vl-amber-d)}
.ac .ac-outcome-list{list-style:none;padding:0!important}
.ac .ac-outcome-list li{padding:8px 0;border-bottom:1px solid var(--vl-border);margin:0}
.ac .ac-outcome-list li:last-child{border-bottom:0}
.ac .ac-map{list-style:none;padding:0!important;margin:12px 0 18px;border:1px solid var(--vl-border);border-radius:6px;background:#fff}
.ac .ac-map li{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 16px;margin:0;border-bottom:1px solid var(--vl-border);font-size:15px}
.ac .ac-map li:last-child{border-bottom:0}
.ac .ac-map li.is-here{background:var(--vl-alt);font-weight:700;color:var(--vl-navy)}
.ac .ac-map span{font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--vl-muted)}
.ac .ac-map li.is-here span{color:var(--vl-blue-d)}
.ac .ac-meta{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px;margin:16px 0}
.ac .ac-meta div{background:var(--vl-bg);border:1px solid var(--vl-border);border-radius:6px;padding:10px 14px}
.ac .ac-meta b{display:block;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--vl-muted)}
.ac .ac-meta span{font-size:15px}
/* interactive widgets */
.ac .ac-sim{border:1px solid var(--vl-border);border-radius:8px;background:var(--vl-bg);padding:20px;margin:20px 0}
.ac .ac-sim>h3{margin:0 0 6px!important;font-size:20px!important}
.ac .ac-sim>p{font-size:15px!important;color:var(--vl-muted)}
.ac .ac-ctl{display:flex;flex-wrap:wrap;gap:10px 14px;align-items:flex-end;margin:12px 0}
.ac .ac-ctl>div{display:flex;flex-direction:column;gap:4px;min-width:0}
.ac .ac-eqbox{font-family:var(--sd-heading-font,'Piazzolla',Georgia,serif);font-size:clamp(26px,5vw,38px);text-align:center;background:#fff;border:1px solid var(--vl-border);border-radius:8px;padding:18px 12px;margin:12px 0;color:var(--vl-navy);font-variant-numeric:tabular-nums}
.ac .ac-eqbox.is-solved{border-color:var(--vl-green-l);background:rgba(88,205,112,.14)}
.ac .ac-log{list-style:none;counter-reset:l;padding:0!important;margin:10px 0}
.ac .ac-log li{counter-increment:l;font-size:15px!important;padding:6px 0 6px 34px;position:relative;border-bottom:1px solid var(--vl-border);margin:0;font-variant-numeric:tabular-nums}
.ac .ac-log li::before{content:counter(l);position:absolute;left:0;top:7px;width:22px;height:22px;border-radius:50%;background:var(--vl-navy);color:#fff;font-size:12px;font-weight:700;display:grid;place-items:center}
.ac .ac-hist{background:#fff;border:1px solid var(--vl-border);border-radius:6px;padding:8px}
.ac .ac-hist svg{display:block;width:100%;height:auto}
.ac .ac-hist text{font-family:var(--sd-body-font,sans-serif);fill:var(--vl-muted);font-size:11px}
.ac .ac-matrix{display:grid;grid-template-columns:34px repeat(5,minmax(0,1fr));gap:3px;margin:12px 0;font-size:12px}
.ac .ac-matrix .h{display:flex;align-items:center;justify-content:center;font-weight:700;color:var(--vl-muted);min-height:34px;text-align:center}
.ac .ac-matrix .c{min-height:40px;display:flex;align-items:center;justify-content:center;border-radius:4px;font-weight:700;color:var(--vl-navy);border:2px solid transparent}
.ac .ac-matrix .c.lo{background:rgba(88,205,112,.35)}
.ac .ac-matrix .c.md{background:rgba(245,185,66,.45)}
.ac .ac-matrix .c.hi{background:rgba(193,69,27,.45)}
.ac .ac-matrix .c.on{border-color:var(--vl-navy);box-shadow:0 0 0 2px #fff inset}
.ac .ac-risks{width:100%;border-collapse:collapse;font-size:14px;margin:10px 0}
.ac .ac-risks th,.ac .ac-risks td{border-bottom:1px solid var(--vl-border);padding:7px 8px;text-align:left;vertical-align:middle}
.ac .ac-risks th{background:var(--vl-alt);font-size:12px;letter-spacing:.04em;color:var(--vl-navy)}
.ac .ac-risks td.n{text-align:right;font-variant-numeric:tabular-nums}
.ac .ac-risks tfoot td{font-weight:700;border-top:2px solid var(--vl-navy)}
.ac .ac-risks input[type=text]{width:100%;min-width:90px}
/* practice */
.ac .ac-q{border:1px solid var(--vl-border);border-radius:8px;padding:20px 22px;background:#fff;margin:0 0 16px}
.ac .ac-q .vl-q-meta{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;font-size:13px;color:var(--vl-muted);margin-bottom:8px}
.ac .ac-stem{font-size:17px;margin:0 0 12px}
.ac .ac-numrow{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.ac .ac-numrow input{width:180px}
.ac .ac-unit{font-size:15px;color:var(--vl-muted)}
.ac .ac-fb{margin-top:12px;padding:0;font-size:15px;border-radius:6px}
.ac .ac-fb.is-ok,.ac .ac-fb.is-no{padding:10px 14px}
.ac .ac-fb.is-ok{background:rgba(88,205,112,.18)}
.ac .ac-fb.is-no{background:rgba(245,185,66,.22)}
.ac .ac-gensol{margin-top:10px;padding:12px 14px;background:var(--vl-bg);border-radius:6px;font-size:15px}
.ac .ac-gensol[hidden],.ac .ac-model[hidden]{display:none}
.ac .ac-q textarea{width:100%;min-height:120px;padding:10px 12px;border:1px solid var(--vl-border);border-radius:4px;font:16px var(--sd-body-font,sans-serif);color:var(--vl-ink)}
.ac .ac-model{margin-top:12px;padding:14px 16px;background:var(--vl-bg);border-radius:6px;font-size:15px}
.ac .ac-model ul{list-style:none;padding:0!important}
.ac .ac-model li label{display:flex;gap:10px;align-items:flex-start;font-weight:400;font-size:15px}
.ac .ac-model li input{margin-top:4px;width:18px;height:18px;accent-color:var(--vl-blue)}
.ac .ac-score{display:flex;flex-wrap:wrap;gap:12px 20px;align-items:center;padding:14px 18px;border:1px solid var(--vl-border);border-radius:8px;background:var(--vl-alt);margin:0 0 18px;font-size:16px}
.ac details.ac-sol{border:1px solid var(--vl-border);border-radius:6px;margin:0 0 10px;background:#fff}
.ac details.ac-sol>summary{cursor:pointer;list-style:none;padding:13px 48px 13px 18px;font-weight:700;color:var(--vl-navy);position:relative;min-height:48px;font-size:16px}
.ac details.ac-sol>summary::-webkit-details-marker{display:none}
.ac details.ac-sol>summary::after{content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);font-size:22px;color:var(--vl-blue)}
.ac details.ac-sol[open]>summary::after{content:"\2212"}
.ac details.ac-sol[open]>summary{border-bottom:1px solid var(--vl-border);background:var(--vl-bg)}
.ac details.ac-sol .ac-solbody{padding:10px 20px 16px}
.ac details.ac-sol .ac-solbody p,.ac details.ac-sol .ac-solbody li{font-size:16px}
.ac .ac-outcomes{list-style:none;padding:0!important}
.ac .ac-outcomes li{margin:0 0 8px}
.ac .ac-outcomes label{display:flex;gap:12px;align-items:flex-start;font-weight:400;font-size:17px;color:var(--vl-ink)}
.ac .ac-outcomes input{margin-top:5px;width:20px;height:20px;accent-color:var(--vl-blue)}
.ac .ac-keypoints{counter-reset:k;list-style:none;padding:0!important}
.ac .ac-keypoints li{counter-increment:k;position:relative;padding-left:44px;margin:0 0 10px}
.ac .ac-keypoints li::before{content:counter(k,decimal-leading-zero);position:absolute;left:0;top:1px;font-family:var(--sd-heading-font,'Piazzolla',Georgia,serif);font-weight:700;color:var(--vl-blue);font-size:18px}
.ac .ac-refs li{font-size:15px}
.ac .ac-case{border:1px solid var(--vl-border);border-left:5px solid var(--vl-amber);border-radius:6px;background:#fff;padding:16px 20px;margin:18px 0}
.ac .ac-case>h4{margin:0 0 6px}
@media (max-width:900px){.ac .ac-q{padding:16px}.ac .ac-numrow input{width:100%}.ac .ac-risks{display:block;overflow-x:auto}}
@media print{.ac .ac-sim,.ac .ac-ctl{display:none!important}.ac details.ac-sol{break-inside:avoid}}

/* Links: blue and underlined inside lesson content */
.vl .vl-sec a:not(.vl-btn),.vl .ac-ilink,.vl-foot a:not(.vl-btn){color:#1D4ED8;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.vl .vl-sec a:not(.vl-btn):hover,.vl .ac-ilink:hover{color:#1E3A8A;text-decoration-thickness:2px}

.vl .ac-risks tr.is-crit td{background:rgba(220,38,38,.10);font-weight:600}