:root{--accent: #2b6ef5;--accent-hover: #1d56d1;--accent-secondary: #e67e22;--accent-tertiary: #16a34a;--accent-quaternary: #9333ea;--bg: #f4f6fb;--surface: #ffffff;--border: #e2e6ee;--text: #1a1f2b;--text-muted: #667085;--danger: #d92d20;--danger-hover: #b42318;--success: #12805c;--success-bg: #ecfdf5;--danger-bg: #fef3f2;--info-bg: #eff4ff;--radius: 10px;--shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08)}@media (prefers-color-scheme: dark){:root{--accent: #5b8def;--accent-hover: #7ba3f2;--accent-secondary: #f0a04b;--accent-tertiary: #4ade80;--accent-quaternary: #c084fc;--bg: #0f1420;--surface: #171d2b;--border: #2a3244;--text: #e6e9f0;--text-muted: #99a1b3;--danger: #f97066;--danger-hover: #fda29b;--success: #32d296;--success-bg: #0f2e24;--danger-bg: #34181a;--info-bg: #16233d;--shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 1px 3px rgba(0, 0, 0, .4)}}*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased}.topbar{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;padding:14px 20px;background:var(--surface);border-bottom:1px solid var(--border);box-shadow:0 1px 2px #1018280a}.topbar h1{font-size:1.1rem;margin:0;display:flex;align-items:center;gap:10px}.topbar .brand-mark{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,var(--accent),var(--accent-quaternary));flex-shrink:0}.container{max-width:720px;margin:0 auto;padding:20px 16px 64px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;margin-bottom:20px}h2.section-title{font-size:1rem;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted);margin:0 0 14px;display:flex;align-items:center;gap:8px}h2.section-title .title-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);flex-shrink:0}h3.subsection-heading{font-size:.8rem;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted);margin:24px 0 12px;padding-top:16px;border-top:1px solid var(--border)}h3.subsection-heading:first-child{margin-top:0;padding-top:0;border-top:none}.section-tabs{display:flex;gap:4px;background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:4px;margin-bottom:20px;box-shadow:var(--shadow)}.section-tab{flex:1;text-align:center;padding:10px 12px;border-radius:7px;border:none;background:none;font-weight:600;font-size:.9rem;color:var(--text-muted);cursor:pointer;transition:background .15s ease,color .15s ease;font-family:inherit}.section-tab:hover{background:var(--bg)}.section-tab.active{background:var(--accent);color:#fff}.section-tab.active:hover{background:var(--accent-hover)}.layer-group{border:1px solid var(--border);border-left:4px solid var(--accent);border-radius:10px;padding:16px;margin-bottom:14px;background:var(--bg)}.layer-group>label:last-child,.layer-group>.field-hint:last-child,.layer-group>.field-row:last-child{margin-bottom:0}.layer-group-header{display:flex;align-items:center;gap:10px;margin-bottom:14px}.layer-group-header .layer-icon{width:26px;height:26px;border-radius:7px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.layer-group-header .layer-icon svg{width:15px;height:15px}.layer-group-header h4{margin:0;font-size:.92rem;font-weight:700}.layer-group-header .layer-optional-tag{margin-left:auto;font-size:.7rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.03em;font-weight:600}.layer-group-base{border-left-color:var(--accent)}.layer-group-base .layer-icon{background:var(--accent)}.layer-group-video{border-left-color:var(--accent)}.layer-group-video .layer-icon{background:var(--accent)}.layer-group-image{border-left-color:var(--accent-tertiary)}.layer-group-image .layer-icon{background:var(--accent-tertiary)}.layer-group-model{border-left-color:var(--accent-quaternary)}.layer-group-model .layer-icon{background:var(--accent-quaternary)}.layer-group-text{border-left-color:var(--accent-secondary)}.layer-group-text .layer-icon{background:var(--accent-secondary)}.layer-group-meta{border-left-color:var(--text-muted)}.layer-group-meta .layer-icon{background:var(--text-muted)}.login-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:16px}.login-card{width:100%;max-width:360px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:32px 28px}.login-card h1{margin:0 0 4px;font-size:1.3rem}.login-card p.subtitle{color:var(--text-muted);margin:0 0 20px;font-size:.9rem}.stats-row{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:20px}.export-row{display:flex;align-items:center;gap:10px;margin-bottom:20px}.stat-card{flex:1 1 140px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px;text-align:center}.stat-card .value{font-size:1.8rem;font-weight:700;line-height:1.2;color:var(--accent)}.stat-card .label{color:var(--text-muted);font-size:.8rem;margin-top:4px;text-transform:uppercase;letter-spacing:.03em}label{display:block;margin-bottom:16px;font-size:.9rem}label>span,label>.label-text{display:block;margin-bottom:6px;font-weight:600}input[type=text],input[type=password],textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;background:var(--bg);color:var(--text);font-size:1rem;min-height:44px;font-family:inherit}input[type=text]:focus,input[type=password]:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px #2b6ef526}textarea{resize:vertical;min-height:80px}input[type=file]{width:100%;padding:10px 0;font-size:.9rem}select{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;background:var(--bg);color:var(--text);font-size:.95rem;min-height:44px}select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px #2b6ef526}.field-row{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:16px}.field-row label{flex:1 1 120px;margin-bottom:0}.checkbox-label{display:flex;align-items:center;gap:8px;flex-basis:100%}.checkbox-label input[type=checkbox]{width:auto;margin:0}.checkbox-label .label-text{margin-bottom:0;font-weight:500}.field-hint{color:var(--text-muted);font-size:.85em;margin:-10px 0 16px}.link-btn{background:none;border:none;padding:0;color:var(--accent);text-decoration:underline;cursor:pointer;font-size:inherit}.form-actions{display:flex;gap:10px;margin-top:20px;padding-top:18px;border-top:1px solid var(--border)}.form-actions .btn-block{flex:1}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;min-height:44px;border:none;border-radius:8px;font-size:.95rem;font-weight:600;cursor:pointer;background:var(--accent);color:#fff;transition:background .15s ease}.btn:hover{background:var(--accent-hover)}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-block{width:100%}.btn-secondary{background:transparent;color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{background:var(--bg)}.btn-danger{background:var(--danger)}.btn-danger:hover{background:var(--danger-hover)}.btn-sm{padding:6px 12px;min-height:36px;font-size:.85rem}.banner{border-radius:8px;padding:10px 14px;font-size:.9rem;margin:12px 0;display:none}.banner.visible{display:block}.banner.info{background:var(--info-bg);color:var(--accent)}.banner.success{background:var(--success-bg);color:var(--success)}.banner.error{background:var(--danger-bg);color:var(--danger)}.spinner{display:inline-block;width:16px;height:16px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}#preview-wrap,#room-preview-wrap{margin:4px 0 20px}#preview-hint,#room-preview-hint{color:var(--text-muted);font-size:.85em;margin:4px 0 10px;display:flex;flex-wrap:wrap;gap:4px 14px;align-items:center}.legend-swatch{display:inline-block;width:10px;height:10px;border-radius:2px;margin-right:4px;vertical-align:-1px}.legend-video{background:var(--accent)}.legend-text{background:var(--accent-secondary)}#preview-container,#room-preview-container{position:relative;display:inline-block;max-width:100%;touch-action:none;border-radius:8px;overflow:visible;border:1px solid var(--border)}#preview-img,#room-preview-img{border-radius:8px}#preview-img,#room-preview-img{display:block;max-width:100%;height:auto;-webkit-user-select:none;user-select:none}.layer-box{position:absolute;border:2px dashed var(--accent);background:#2b6ef526;cursor:move;box-sizing:border-box}.layer-box.has-preview{background-color:transparent;background-repeat:no-repeat;background-size:cover;background-position:center}.layer-preview-media{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;object-fit:cover;pointer-events:none;background:#000}.layer-preview-text{display:flex;align-items:center;justify-content:center;text-align:center;background:transparent;padding:4%;box-sizing:border-box;overflow:hidden;line-height:1.3;font-weight:600;text-shadow:0 0 8px rgba(0,0,0,.6);word-break:break-word}.layer-box-text{border-color:var(--accent-secondary);background:#e67e222e}.layer-box-image{border-color:var(--accent-tertiary);background:#16a34a2e}.layer-box-model{border-color:var(--accent-quaternary);background:#9333ea2e}.layer-label{position:absolute;top:-20px;left:-2px;font-size:.7rem;font-weight:600;color:var(--text-muted);pointer-events:none;white-space:nowrap}.layer-handle{position:absolute;right:-9px;bottom:-9px;width:22px;height:22px;background:var(--accent);border:2px solid var(--surface);border-radius:50%;cursor:nwse-resize}.layer-box-text .layer-handle{background:var(--accent-secondary)}.layer-box-image .layer-handle{background:var(--accent-tertiary)}.layer-box-model .layer-handle{background:var(--accent-quaternary)}.legend-image{background:var(--accent-tertiary)}.legend-model{background:var(--accent-quaternary)}input[type=color]{width:56px;height:40px;padding:2px;border:1px solid var(--border);border-radius:8px;background:var(--bg);cursor:pointer}#markers-list,#rooms-list{list-style:none;padding:0;margin:0}#markers-list li,#rooms-list li{display:flex;align-items:center;gap:12px;border:1px solid var(--border);border-radius:8px;padding:10px 12px;margin-bottom:8px;flex-wrap:wrap;transition:border-color .15s ease,box-shadow .15s ease}#markers-list li:hover,#rooms-list li:hover{border-color:var(--accent);box-shadow:0 1px 4px #10182814}#markers-list .thumb{width:56px;height:56px;border-radius:6px;object-fit:cover;background:var(--bg);flex-shrink:0;border:1px solid var(--border)}#markers-list .thumb-placeholder{width:56px;height:56px;border-radius:6px;background:var(--bg);flex-shrink:0;border:1px solid var(--border)}.marker-qr{display:flex;flex-direction:column;align-items:center;gap:4px;flex-shrink:0}.marker-qr canvas{border-radius:4px;border:1px solid var(--border);background:#fff}.qr-download{font-size:.7rem;color:var(--accent);text-decoration:none}.qr-download:hover{text-decoration:underline}.nfc-section{display:flex;flex-direction:column;align-items:center;gap:4px;margin-top:6px;max-width:170px}.nfc-status{font-size:.7rem;color:var(--text-muted);text-align:center}.nfc-instructions{font-size:.78rem;color:var(--text-muted);text-align:left;background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:10px 12px;margin-top:4px;max-width:260px}.nfc-instructions ol{margin:0;padding-left:18px}.nfc-instructions li{margin-bottom:6px}.nfc-instructions li:last-child{margin-bottom:0}.nfc-link-row{display:flex;gap:6px;margin-top:4px}.nfc-link-row input{flex:1;min-width:0;font-size:.75rem;padding:4px 6px;border-radius:4px;border:1px solid var(--border);background:var(--bg);color:var(--text)}.info{flex:1;min-width:140px}.info a{font-weight:600;text-decoration:none;color:var(--text);word-break:break-word}.info a:hover{color:var(--accent)}.meta{font-size:.8rem;color:var(--text-muted);margin-top:2px}.marker-actions{display:flex;gap:8px;flex-shrink:0}.room-thumb-strip{display:flex;flex-shrink:0}.room-thumb-strip .thumb-sm{width:40px;height:40px;border-radius:6px;object-fit:cover;background:var(--bg);border:1px solid var(--surface);margin-left:-10px}.room-thumb-strip .thumb-sm:first-child{margin-left:0}#room-slots-list{margin-bottom:4px}.room-slot-item{display:flex;align-items:center;gap:10px;border:1px solid var(--border);border-radius:8px;padding:8px 10px;margin-bottom:8px}.room-slot-item .thumb{width:40px;height:40px;border-radius:6px;object-fit:cover;flex-shrink:0;border:1px solid var(--border)}.room-slot-item span{flex:1;font-size:.85rem}.empty-state{color:var(--text-muted);font-size:.9rem;padding:8px 0}canvas#qr-canvas{border-radius:8px;border:1px solid var(--border);margin-top:8px}@media (max-width: 480px){.container{padding:16px 12px 48px}.card{padding:16px}.stat-card{flex-basis:100%}}