/* ═══════════════════════════════════════════════════════════════
   lab.css — Virtual Lab module styles (reuses style.css tokens)
   EduHindi.in · Mission Shikshan Samvad
═══════════════════════════════════════════════════════════════ */

.lab-hero{background:linear-gradient(135deg,var(--surf),var(--card));border:1px solid var(--border);border-radius:var(--r16);padding:26px;margin-bottom:22px;position:relative;overflow:hidden}
.lab-hero::after{content:"";position:absolute;right:-40px;bottom:-50px;width:200px;height:200px;border:2px dashed rgba(255,149,0,.15);border-radius:50%}
.lab-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;background:var(--saf-dim);border:1px solid rgba(255,149,0,.3);border-radius:20px;font-size:.7rem;font-weight:700;color:var(--saffron);margin-bottom:14px}
.lab-hero h1{font-size:1.7rem;margin-bottom:6px}
.lab-hero p.desc{color:var(--fog);font-size:.85rem;max-width:560px;line-height:1.6;margin-bottom:18px}

.lab-class-row{display:flex;gap:8px;flex-wrap:wrap}
.lab-class-tab{background:var(--ink);border:1.5px solid var(--border);color:var(--chalk);padding:9px 16px;border-radius:var(--r8);cursor:pointer;font-weight:700;font-size:.85rem;transition:var(--transition)}
.lab-class-tab:hover{border-color:var(--saffron)}
.lab-class-tab.active{background:var(--saffron);color:#000;border-color:var(--saffron)}

.lab-section-title{display:flex;align-items:center;gap:10px;margin:26px 0 14px}
.lab-section-title h3{font-size:1rem;font-weight:800}
.lab-section-title .rule{flex:1;height:1px;background:var(--border)}

.lab-subject-toggle{display:flex;gap:10px;margin-bottom:18px}
.lab-subject-btn{flex:1;padding:16px;border-radius:var(--r12);border:1.5px solid var(--border);background:var(--card);cursor:pointer;text-align:left;transition:var(--transition)}
.lab-subject-btn .icon{font-size:1.5rem;display:block;margin-bottom:6px}
.lab-subject-btn .name{font-weight:800;font-size:.92rem}
.lab-subject-btn.active.m{border-color:var(--c-m);box-shadow:0 0 0 1px var(--c-m) inset}
.lab-subject-btn.active.s{border-color:var(--c-s);box-shadow:0 0 0 1px var(--c-s) inset}
.lab-subject-btn:hover{transform:translateY(-2px)}

.lab-module-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.lab-card{background:var(--card);border:1.5px solid var(--border);border-radius:var(--r12);padding:16px;cursor:pointer;transition:var(--transition);position:relative}
.lab-card:hover{transform:translateY(-3px)}
.lab-card.m:hover{border-color:var(--c-m);box-shadow:0 8px 28px rgba(14,165,233,.22)}
.lab-card.s:hover{border-color:var(--c-s);box-shadow:0 8px 28px rgba(16,185,129,.22)}
.lab-card .icon{font-size:1.5rem;display:block;margin-bottom:8px}
.lab-card h4{font-size:.9rem;font-weight:800;margin-bottom:4px}
.lab-card p{font-size:.72rem;color:var(--fog)}
.lab-card .count{position:absolute;top:14px;right:14px;font-size:.6rem;font-weight:700;background:var(--ink);color:var(--fog);padding:3px 9px;border-radius:10px}

.lab-topic-item{background:var(--card);border:1.5px solid var(--border);border-radius:var(--r12);padding:14px 16px;display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;transition:var(--transition)}
.lab-topic-item.ready{cursor:pointer}
.lab-topic-item.ready:hover{border-color:var(--saffron);transform:translateY(-2px)}
.lab-topic-item.ready.done{border-color:var(--ok)}
.lab-topic-item .t-name{font-weight:700;font-size:.88rem}
.lab-topic-item .t-classes{font-family:'Inter',monospace;font-size:.68rem;color:var(--fog);margin-top:3px}
.lab-badge{font-size:.65rem;font-weight:700;padding:4px 10px;border-radius:10px}
.lab-badge.ready{background:var(--ok-dim);color:var(--ok)}
.lab-badge.soon{background:var(--ink);color:var(--fog)}
.lab-badge.done{background:var(--ok);color:#04140c}

.lab-back{background:none;border:none;color:var(--saffron);font-weight:700;font-size:.8rem;cursor:pointer;margin-bottom:14px;padding:0}
.lab-back:hover{text-decoration:underline}

.lab-sim-layout{display:grid;grid-template-columns:1.3fr 1fr;gap:20px}
@media(max-width:820px){.lab-sim-layout{grid-template-columns:1fr}}
.lab-stage{background:var(--surf);border:1px solid var(--border);border-radius:var(--r16);padding:18px}
.lab-stage h2{font-size:1.05rem;margin-bottom:12px}
.lab-canvas{width:100%;height:auto;background:var(--ink);border-radius:var(--r8);border:1px dashed var(--border)}
.lab-controls{margin-top:14px;display:flex;flex-direction:column;gap:12px}
.lab-control-row label{color:var(--fog);font-size:.7rem;display:flex;justify-content:space-between;margin-bottom:4px}
.lab-control-row input[type=range]{width:100%;accent-color:var(--saffron)}
.lab-control-row select{width:100%;padding:8px;border-radius:var(--r8);border:1px solid var(--border);background:var(--ink);color:var(--chalk)}
.lab-actions{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap}
.lab-btn{border:none;padding:10px 16px;border-radius:var(--r8);font-weight:700;font-size:.78rem;cursor:pointer;transition:var(--transition)}
.lab-btn-primary{background:var(--saffron);color:#000}
.lab-btn-primary:hover{filter:brightness(.92)}
.lab-btn-ghost{background:var(--ink);color:var(--chalk);border:1px solid var(--border)}
.lab-btn-ghost:hover{border-color:var(--chalk)}

.lab-panel{background:var(--card);border:1px solid var(--border);border-radius:var(--r16);padding:18px}
.lab-formula{background:var(--ink);color:var(--saffron);font-family:monospace;font-size:1rem;padding:14px;border-radius:var(--r8);text-align:center;margin-bottom:14px}
.lab-formula.hidden-answer{filter:blur(6px);user-select:none}
.lab-live{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.lab-live-val{background:var(--saf-dim);border:1px solid rgba(255,149,0,.3);border-radius:var(--r8);padding:7px 11px;font-family:monospace;font-size:.72rem;color:var(--chalk)}
.lab-explain{font-size:.8rem;line-height:1.7;color:var(--chalk);margin-bottom:14px;font-family:'Noto Sans Devanagari',sans-serif}
.lab-explain b{color:var(--saffron)}
.lab-example{background:var(--ink);border-left:3px solid var(--c-s);padding:10px 14px;border-radius:0 var(--r8) var(--r8) 0;font-size:.76rem;line-height:1.6;font-family:'Noto Sans Devanagari',sans-serif}

.lab-quiz-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r12);padding:18px;margin-bottom:14px}
.lab-quiz-card p.q{font-weight:700;margin-bottom:10px;font-size:.85rem;font-family:'Noto Sans Devanagari',sans-serif}
.lab-opt{display:block;width:100%;text-align:left;background:var(--ink);border:1px solid var(--border);border-radius:var(--r8);padding:10px 12px;margin-bottom:8px;cursor:pointer;font-size:.78rem;font-family:'Noto Sans Devanagari',sans-serif;color:var(--chalk)}
.lab-opt:hover{border-color:var(--saffron)}
.lab-opt.correct{background:var(--ok-dim);border-color:var(--ok)}
.lab-opt.wrong{background:var(--err-dim);border-color:var(--err)}
.lab-opt[disabled]{cursor:default}

.lab-progress-outer{background:var(--ink);border-radius:20px;height:8px;overflow:hidden}
.lab-progress-inner{background:var(--c-s);height:100%;transition:width .8s ease}

body.classroom-mode .lab-stage h2{font-size:1.5rem}
body.classroom-mode .lab-formula{font-size:1.4rem;padding:20px}
body.classroom-mode .lab-control-row label{font-size:.9rem}
body.classroom-mode .lab-live-val{font-size:.9rem;padding:9px 14px}
body.classroom-mode .lab-explain{font-size:.95rem}
body.classroom-mode .page-body{max-width:1300px}