:root{--bg-dark:#0f172a;--bg-panel:#1e293bb3;--border-color:#ffffff1a;--primary:#3b82f6;--primary-hover:#2563eb;--secondary:#475569;--text-main:#f8fafc;--text-muted:#94a3b8;--success:#10b981;--danger:#ef4444;--warning:#f59e0b;--floor:#d9c9a8}body{background:radial-gradient(circle at top right, #1e293b, var(--bg-dark));color:var(--text-main);min-height:100vh;margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}.app-container{box-sizing:border-box;flex-direction:column;min-height:100vh;padding:2rem;display:flex}.glass-panel{background:var(--bg-panel);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--border-color);border-radius:16px;width:100%;max-width:800px;margin:0 auto;padding:2rem;box-shadow:0 25px 50px -12px #00000080}h1,h2,h3,h4{letter-spacing:0;margin-top:0;font-weight:600}.subtitle{color:var(--text-muted);margin-bottom:2rem}.input-group{margin-bottom:1.5rem}.input-group label{color:var(--text-muted);margin-bottom:.5rem;font-size:.875rem;display:block}.checkbox-group{margin-top:-.25rem}.checkbox-label{cursor:pointer;align-items:center;gap:.75rem;color:var(--text-main)!important;display:flex!important}input[type=checkbox]{width:18px;height:18px;accent-color:var(--primary)}input[type=number]{border:1px solid var(--border-color);color:#fff;box-sizing:border-box;background:#0f172a80;border-radius:8px;width:100%;padding:.75rem 1rem;font-size:1rem;transition:border-color .2s}input[type=number]:focus{border-color:var(--primary);outline:none}.upload-container{flex-wrap:wrap;justify-content:center;gap:1rem;margin-top:2rem;display:flex}.upload-btn{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:9999px;align-items:center;gap:.75rem;padding:1rem 2rem;font-weight:500;transition:all .2s;display:flex}.upload-btn:hover{background:var(--primary-hover);transform:translateY(-2px);box-shadow:0 10px 15px -3px #3b82f666}.upload-btn-secondary{background:#475569d9}.upload-btn-secondary:hover{background:#64748bf2;box-shadow:0 10px 15px -3px #0f172a59}.stats-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin-bottom:2rem;display:grid}.stat-card{border:1px solid var(--border-color);text-align:center;background:#0f172a80;border-radius:12px;padding:1.5rem}.stat-card .value{color:var(--primary);font-size:2.5rem;font-weight:700}.issue-section{margin-bottom:2rem}.badge{color:var(--danger);background:#ef444433;border-radius:9999px;margin-left:.5rem;padding:.25rem .75rem;font-size:.875rem}.success-text{color:var(--success)}.issue-list{border:1px solid var(--border-color);background:#0f172a80;border-radius:8px;max-height:200px;padding:1rem 2rem;overflow-y:auto}.issue-list li{color:var(--text-muted);margin-bottom:.5rem}.issue-list strong{color:var(--text-main)}.actions{justify-content:flex-end;gap:1rem;margin-top:2rem;display:flex}.btn{cursor:pointer;border:none;border-radius:8px;padding:.75rem 1.5rem;font-weight:500;transition:all .2s}.btn-icon{justify-content:center;align-items:center;gap:.5rem;display:inline-flex}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover)}.btn-secondary{background:var(--secondary);color:#fff}.btn-secondary:hover{background:#475569cc}.spinner-container{justify-content:center;padding:3rem;display:flex}.spinner{border:4px solid #ffffff1a;border-left-color:var(--primary);border-radius:50%;width:50px;height:50px;animation:1s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.metrics-row{gap:1.5rem;margin-top:2rem;display:flex}.metric-box{border:1px solid var(--border-color);background:#0f172a80;border-radius:12px;flex:1;padding:1.5rem}.metric-data{flex-direction:column;gap:.5rem;margin-top:1rem;display:flex}.visual-layout{flex-direction:column;flex:1;max-width:100%;display:flex}.renderer-header{justify-content:space-between;align-items:flex-start;gap:1rem;margin-bottom:2rem;display:flex}.toolbar-stack{flex-direction:column;gap:.75rem;min-width:0;display:flex}.toolbar{background:var(--bg-panel);border:1px solid var(--border-color);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-radius:12px;flex-wrap:wrap;align-items:center;gap:1rem;padding:1rem;display:flex}.toolbar select{color:#fff;border:1px solid var(--border-color);background:#0f172a80;border-radius:6px;padding:.5rem 1rem}.relationship-key{color:var(--text-muted);border:1px solid var(--border-color);background:#0f172a73;border-radius:10px;flex-wrap:wrap;align-items:center;gap:.5rem 1rem;padding:.625rem .75rem;font-size:.75rem;display:flex}.relationship-key span{align-items:center;display:inline-flex}.metrics-dashboard{background:var(--bg-panel);border:1px solid var(--border-color);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-radius:12px;gap:2rem;padding:1rem 2rem;display:flex}.metric-item{flex-direction:column;display:flex}.metric-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;font-size:.75rem}.metric-val{align-items:center;gap:.5rem;font-size:1.5rem;font-weight:700;display:flex}.metric-subtotal{color:var(--text-muted);white-space:nowrap;align-items:center;gap:.35rem;font-size:.9rem;font-weight:600;display:inline-flex}.metric-delta{font-size:.875rem}.metric-delta.positive{color:var(--success)}.metric-delta.negative{color:var(--danger)}.tables-container{grid-template-columns:repeat(var(--tables-per-row,4), auto);background:var(--floor,#d9c9a8);box-sizing:border-box;border-color:#0000001f;justify-content:center;justify-items:center;gap:4rem;width:max-content;min-width:100%;max-width:none;margin:0;padding:3rem 2rem 2rem;display:grid;position:relative}.table-wrapper{display:flex;position:relative}.table-core{background:#332115;border-radius:8px;margin:0 1rem;box-shadow:inset 0 0 20px #00000080}.row-col{flex-direction:column;gap:.5rem;padding:.5rem 0;display:flex}.seat{cursor:pointer;border:2px solid #0000004d;border-radius:50%;justify-content:center;align-items:center;width:40px;height:40px;transition:transform .2s,box-shadow .2s;display:flex;position:relative}.seat:hover{z-index:10;transform:scale(1.1)}.seat.selected{z-index:20;transform:scale(1.15);box-shadow:0 0 0 4px #fff,0 0 20px #ffffff80}.seat-empty{background:#0000000f;border-style:dashed;border-color:#0000004d}.student-tooltip{white-space:nowrap;pointer-events:none;z-index:30;opacity:0;background:#000c;border-radius:4px;padding:.25rem .5rem;font-size:.75rem;transition:opacity .2s;position:absolute;top:-30px}.seat:hover .student-tooltip{opacity:1}.seat .halo-svg{pointer-events:none;filter:drop-shadow(0 2px 2px #000000a6);width:calc(100% + 28px);height:calc(100% + 28px);position:absolute;inset:-14px}.halo-rectangle{stroke:#f97316;stroke-width:4.5px;vector-effect:non-scaling-stroke}.halo-pentagon{stroke:#06b6d4;stroke-width:4.5px;vector-effect:non-scaling-stroke}.seat.halo-focused{z-index:7;box-shadow:0 0 0 3px #fff,0 0 18px #ffffffb3}.seat.selected.halo-focused{box-shadow:0 0 0 4px #fff,0 0 24px #fffc}.seat-name-above{white-space:nowrap;pointer-events:none;color:#1f2937;z-index:8;background:#ffffffb3;border-radius:3px;padding:1px 4px;font-size:.7rem;font-weight:600;position:absolute;bottom:calc(100% - 20px);left:50%;transform:translate(-50%)}.main-area{flex:1;align-items:flex-start;gap:1.5rem;display:flex}.tables-scroll{flex:1;min-width:0;padding-bottom:1rem;overflow-x:auto}.relationship-panel{width:320px;max-width:320px;max-height:calc(100vh - 2rem);margin:0;padding:1.25rem 1.5rem;position:sticky;top:1rem;overflow-y:auto}.relationship-panel .panel-header{justify-content:space-between;align-items:center;margin-bottom:.75rem;display:flex}.relationship-panel .panel-header h3{word-break:break-word;margin:0}.panel-close{color:var(--text-muted);cursor:pointer;background:0 0;border:none;padding:0 .25rem;font-size:1.5rem;line-height:1}.panel-close:hover{color:var(--text-main)}.halo-legend{color:var(--text-muted);border-bottom:1px solid var(--border-color);flex-direction:column;gap:.25rem;margin-bottom:1rem;padding-bottom:.75rem;font-size:.75rem;display:flex}.legend-shape{vertical-align:middle;width:16px;height:16px;color:var(--text-main);margin-right:.5rem;display:inline-block}.legend-shape.rectangle-key rect,.legend-shape .rectangle-key{stroke:#f97316;stroke-width:2.5px;vector-effect:non-scaling-stroke}.legend-shape.pentagon-key polygon,.legend-shape .pentagon-key{stroke:#06b6d4;stroke-width:2.5px;vector-effect:non-scaling-stroke}.relationship-panel .group{margin-bottom:1.25rem}.relationship-panel .group h4{margin:0 0 .5rem;font-size:.875rem}.relationship-panel .count{color:var(--text-muted);font-weight:400}.relationship-panel .name-list{margin:0;padding:0;list-style:none}.relationship-panel .name-list li{color:var(--text-muted);align-items:center;gap:.5rem;padding:.25rem 0;font-size:.875rem;display:flex}.relationship-panel .name-list li.adjacent{color:var(--text-main);font-weight:500}.marker{border-radius:50%;justify-content:center;align-items:center;width:18px;height:18px;font-size:.75rem;font-weight:700;display:inline-flex}.marker.ok{color:var(--success);background:#10b98140}.marker.no{color:var(--text-muted);background:#ffffff0f}.muted{color:var(--text-muted)}.table-core{width:60px}.print-view-controls{z-index:50;background:var(--bg-panel);border:1px solid var(--border-color);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-radius:12px;justify-content:flex-end;gap:1rem;margin-bottom:1rem;padding:.75rem;display:flex;position:sticky;top:0}.print-view .main-area{display:block}.print-view .tables-scroll{overflow-x:auto}.print-view .tables-container{box-shadow:none;padding:2rem}.print-view .seat{width:110px;min-width:110px;height:28px;box-shadow:none;cursor:default;color:#111827;border:none;border-radius:0;transform:none;background:0 0!important}.print-view .seat:hover,.print-view .seat.selected{box-shadow:none;z-index:auto;transform:none}.print-view .seat-empty{visibility:hidden}.print-view .student-tooltip,.print-view .halo-svg{display:none}.print-view .seat-name-above{white-space:normal;pointer-events:none;overflow-wrap:anywhere;text-align:center;color:#111827;background:0 0;max-width:105px;padding:0;font-size:.8rem;line-height:1.15;position:static;transform:none}.print-view .table-core{width:72px;box-shadow:none;background:#111827;border-radius:4px}.print-view .row-col{gap:.25rem}@media print{body{color:#111827;background:#fff}.app-container{min-height:auto;padding:0}.print-view-controls{display:none}.print-view .tables-scroll{padding-bottom:0;overflow:visible}.print-view .tables-container{box-shadow:none;border:none;border-radius:0}}.setup-select{border:1px solid var(--border-color);color:#fff;box-sizing:border-box;background:#0f172a80;border-radius:8px;width:100%;padding:.75rem 1rem;font-size:1rem}.setup-select:focus{border-color:var(--primary);outline:none}.metric-box.highlight-balanced{border-color:var(--primary);box-shadow:0 0 0 1px var(--primary)}.countdown-row{border:1px solid var(--border-color);background:#0f172a80;border-radius:12px;justify-content:space-between;align-items:center;gap:1rem;margin-top:1rem;padding:1rem 1.25rem;display:flex}.countdown{flex-direction:column;display:flex}.countdown-label{text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);font-size:.75rem}.countdown-val{font-variant-numeric:tabular-nums;color:var(--text-main);font-size:1.75rem;font-weight:700}.runtime-advice{background:#0ea5e91f;border:1px solid #38bdf847;border-radius:12px;margin:1rem 0;padding:1rem 1.25rem}.runtime-advice-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:.25rem;font-size:.75rem;display:block}.runtime-advice p{color:var(--text-main);margin:.45rem 0 0}.runtime-advice-reasons{flex-wrap:wrap;gap:.5rem;margin-top:.75rem;display:flex}.runtime-advice-reasons span{color:var(--text-muted);background:#0f172a73;border-radius:999px;padding:.35rem .55rem;font-size:.8rem}.runtime-switch-row{border-top:1px solid #94a3b838;justify-content:space-between;align-items:center;gap:1rem;margin-top:1rem;padding-top:1rem;display:flex}.runtime-switch-row span{color:var(--text-main)}.runtime-switch-note{font-size:.875rem;color:var(--text-muted)!important}.hidden-file-input{display:none}