/* ===== Virtual laboratoriya ===== */
.lab-page { padding: 28px 20px 40px; }
.crumb { font-size: .9rem; color: var(--muted); margin-bottom: 10px; }
.crumb a { color: var(--muted); }
.lab-head h1 { font-size: clamp(1.7rem, 4.4vw, 2.6rem); margin-bottom: 10px; }
.lab-head .goal { color: var(--muted); max-width: 46em; }
.lab-meta { display: flex; gap: 8px; flex-wrap: wrap; margin: 12px 0 22px; }
.lab-grid { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(280px, 1fr); gap: 18px; align-items: start; }
.lab-stage { padding: 18px; }
.stage-svg { width: 100%; height: auto; display: block; border-radius: 18px; background: var(--surface-2); }
.lab-controls { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; align-items: center; }
.lab-controls .btn { min-height: 42px; padding: 10px 18px; }
.ctrl { display: flex; flex-direction: column; gap: 6px; min-width: 180px; flex: 1; }
.ctrl label { font-weight: 600; font-size: .9rem; display: flex; justify-content: space-between; gap: 8px; }
.ctrl label b { color: var(--green-strong); font-variant-numeric: tabular-nums; }
.ctrl input[type=range] { width: 100%; accent-color: var(--green); height: 28px; }
.seg { display: inline-flex; background: var(--surface-2); border-radius: 999px; padding: 4px; gap: 2px; flex-wrap: wrap; }
.seg button { border: 0; background: transparent; font: 600 .9rem var(--sans); color: var(--ink); padding: 8px 14px; border-radius: 999px; cursor: pointer; }
.seg button[aria-pressed=true] { background: var(--surface); box-shadow: var(--shadow); color: var(--green-strong); }
.lab-side { position: sticky; top: 100px; padding: 20px; }
.lab-side h3 { margin-bottom: 12px; }
.lab-steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; counter-reset: st; }
.lab-steps li { counter-increment: st; position: relative; padding: 10px 12px 10px 46px; border-radius: 14px; color: var(--muted); font-size: .95rem; line-height: 1.4; transition: background .2s, color .2s; }
.lab-steps li::before { content: counter(st); position: absolute; left: 10px; top: 9px; width: 26px; height: 26px; border-radius: 50%; border: 1.5px solid var(--line); display: grid; place-items: center; font-weight: 700; font-size: .85rem; background: var(--surface); }
.lab-steps li.cur { background: var(--mint); color: var(--ink); font-weight: 600; }
.lab-steps li.cur::before { border-color: var(--green); color: var(--green-strong); }
.lab-steps li.done { color: var(--ink); }
.lab-steps li.done::before { content: "✓"; background: var(--green); border-color: var(--green); color: #fff; }
.lab-note { margin-top: 14px; padding: 12px 14px; border-radius: 14px; background: var(--surface-2); font-size: .93rem; min-height: 46px; }
.lab-note.ok { background: var(--mint); color: var(--green-strong); }
.lab-note.warn { background: var(--rose-soft); color: var(--ink); }
.lab-table { width: 100%; border-collapse: collapse; margin-top: 12px; font-size: .9rem; background: var(--surface); border-radius: 12px; overflow: hidden; }
.lab-table th, .lab-table td { padding: 8px 10px; border-bottom: 1px solid var(--line); text-align: left; }
.lab-quiz { margin-top: 18px; padding: 24px; }
.lq { border-top: 1px solid var(--line); padding: 16px 0; }
.lq:first-of-type { border-top: 0; }
.lq p { font-weight: 600; margin-bottom: 10px; }
.lq .opts { gap: 8px; }
.lq .opt { padding: 11px 14px; }
.lq .why { margin-top: 10px; font-size: .92rem; padding: 10px 12px; border-radius: 12px; background: var(--surface-2); }
.lab-done { display: flex; align-items: center; gap: 14px; padding: 16px 18px; border-radius: 16px; background: var(--mint); margin-top: 8px; flex-wrap: wrap; }
.lab-done b { font: 700 1.4rem var(--display); color: var(--green-strong); }
.pulse { animation: pulse 1.2s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .45; } }
.clickable { cursor: pointer; }
.clickable:hover { filter: brightness(1.06); }
.hint-ring { animation: ring 1.4s ease-out infinite; transform-box: fill-box; transform-origin: center; }
@keyframes ring { 0% { opacity: .9; transform: scale(.85); } 100% { opacity: 0; transform: scale(1.5); } }
/* Laboratoriyalar ro'yxati */
.labs-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; margin-bottom: 40px; }
.lab-card { display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--line); border-radius: 24px; overflow: hidden; color: var(--ink); text-decoration: none; transition: transform .18s, box-shadow .18s, border-color .18s; }
.lab-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--green); }
.lab-card .art { aspect-ratio: 16/9; background: var(--surface-2); display: grid; place-items: center; }
.lab-card .art svg { width: 100%; height: 100%; }
.lab-card .body { padding: 18px 20px 20px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.lab-card h3 { margin: 0; font-size: 1.12rem; }
.lab-card p { margin: 0; color: var(--muted); font-size: .92rem; }
.lab-card .foot { margin-top: auto; padding-top: 8px; display: flex; justify-content: space-between; align-items: center; }
.badge-done { color: var(--green-strong); font-weight: 700; font-size: .85rem; }
@media (max-width: 900px) { .lab-grid { grid-template-columns: 1fr; } .lab-side { position: static; } }
@media (prefers-reduced-motion: reduce) { .pulse, .hint-ring { animation: none; } }
.lab-quiz { scroll-margin-top: 110px; }
@media (max-width: 900px) { .lab-grid { grid-template-columns: minmax(0, 1fr); } }
.lab-table { display: block; overflow-x: auto; }
.lab-stage, .lab-side { min-width: 0; }
/* Realistik mikroskop ko'rinishi */
.scope { display: grid; grid-template-columns: minmax(0, 1fr) 210px; gap: 18px; align-items: center; background: radial-gradient(circle at 30% 30%, #1d2a24, #0b100e); border-radius: 18px; padding: 20px; color: #E8F1EC; }
.eyepiece { position: relative; aspect-ratio: 1; border-radius: 50%; overflow: hidden; background: #000; box-shadow: 0 0 0 10px #26312c, 0 0 0 12px #3b4a43, 0 20px 40px -10px #000; }
.eyepiece canvas { width: 100%; height: 100%; display: block; cursor: crosshair; transition: filter .12s linear; }
.eyepiece .vign { position: absolute; inset: 0; border-radius: 50%; pointer-events: none; background: radial-gradient(circle, transparent 55%, rgba(0,0,0,.35) 78%, rgba(0,0,0,.85) 100%); }
.eyepiece .dark { position: absolute; inset: 0; background: #000; transition: opacity .4s; pointer-events: none; }
.eyepiece .reticle { position: absolute; left: 50%; top: 8%; bottom: 8%; width: 1px; background: rgba(0,0,0,.25); pointer-events: none; }
.scope-info { font-size: .92rem; line-height: 1.5; }
.scope-info .mag { font: 700 1.6rem var(--display); color: #C6F36B; margin: 6px 0 2px; }
.scope-info .st { color: #93A69C; }
.scope-info .ok { color: #C6F36B; }
.scope-info .credit2 { font-size: .75rem; color: #6f817a; margin-top: 10px; }
@media (max-width: 640px) { .scope { grid-template-columns: 1fr; } }