:root{--bg-primary: #ffffff;--bg-secondary: #f3f4f6;--text-primary: #111827;--text-secondary: #4b5563;--accent-primary: #3b82f6;--accent-secondary: #60a5fa;--accent-warning: #f59e0b;--accent-danger: #ef4444;--border-color: #e5e7eb;--button-primary: #3b82f6;--button-secondary: #60a5fa;--button-primary-text: #ffffff;--bg-primary-rgb: 255, 255, 255;--bg-secondary-rgb: 243, 244, 246;--text-primary-rgb: 17, 24, 39;--text-secondary-rgb: 75, 85, 99;--accent-primary-rgb: 59, 130, 246;--accent-secondary-rgb: 96, 165, 250;--border-color-rgb: 229, 231, 235;--button-success: #22c55e;--button-success-hover: #16a34a;--button-success-text: #ffffff;--success-color: #22c55e;--success-color-rgb: 34, 197, 94;--danger-color: #ef4444;--danger-color-hover: #dc2626;--danger-color-text: #ffffff;--danger-color-rgb: 239, 68, 68;--text-2xl: 1.875rem;--text-xl: 1.5rem;--text-lg: 1.25rem;--text-base: 1rem;--text-sm: .875rem;--text-xs: .75rem;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-xxl: 3rem;--mobile: 640px;--tablet: 768px;--desktop: 1024px;--border-radius-sm: .25rem;--border-radius-md: .375rem;--border-radius-lg: .5rem;--border-radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1);--transition-fast: .2s ease;--transition-medium: .3s ease;--transition-base: .3s ease}*{box-sizing:border-box}body{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;font-size:16px;line-height:1.6;color:#343a40;background-color:#f8f9fa}.container{max-width:1200px;margin:0 auto;padding:0 20px}.text-center{text-align:center}.mt-4{margin-top:2rem}.mb-4{margin-bottom:2rem}.btn{display:inline-block;padding:12px 24px;font-size:16px;font-weight:500;text-align:center;text-decoration:none;border:none;border-radius:8px;cursor:pointer;transition:all .2s ease}.btn:hover{transform:translateY(-1px);box-shadow:0 2px 8px #0000001a}.btn.btn-primary{background-color:#007bff;color:#fff}.btn.btn-primary:hover{background-color:#0062cc}.btn.btn-secondary{background-color:#6c757d;color:#fff}.btn.btn-secondary:hover{background-color:#545b62}.card{background:#fff;border-radius:8px;box-shadow:0 2px 8px #0000001a;padding:2rem;margin:1rem 0}.status{display:inline-block;padding:8px 16px;border-radius:8px;font-weight:500;text-transform:uppercase;font-size:.875rem;letter-spacing:.5px}.status.status-pending{background-color:#ffc107;color:#343a40}.status.status-success{background-color:#28a745;color:#fff}.status.status-error{background-color:#dc3545;color:#fff}.device-id{font-family:Courier New,monospace;background-color:#f8f9fa;padding:1rem;border-radius:8px;border:2px solid #007bff;font-size:1.25rem;font-weight:700;text-align:center;margin:1rem 0}.spinner{display:inline-block;width:40px;height:40px;border:4px solid #f8f9fa;border-top:4px solid #007bff;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.error-actions{display:flex;justify-content:center;align-items:center;gap:1rem;margin-top:1.5rem}.error-actions .btn{min-width:120px}.error-help{background-color:#17a2b81a;border:1px solid rgba(23,162,184,.3);border-radius:8px;padding:1rem;margin:1rem 0}.error-help p{margin:0;color:#343a40;font-size:.9rem}.error-help p strong{color:#17a2b8}.fullscreen-button{position:fixed;bottom:20px;right:20px;width:50px;height:50px;background-color:#000000b3;border:2px solid rgba(255,255,255,.3);border-radius:50%;color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .3s ease;z-index:1000}.fullscreen-button:hover{background-color:#000000e6;border-color:#fff9;transform:scale(1.1)}.fullscreen-button:active{transform:scale(.95)}.tenants-header{padding:var(--spacing-md);cursor:pointer;transition:all var(--transition-fast);position:relative}.tenants-header:hover{opacity:.9;transform:scale(1.01)}.tenants-header.fixed{position:fixed;top:0;left:0;right:0;z-index:100}.tenants-header.bottom{position:fixed;bottom:0;left:0;right:0;z-index:100;box-shadow:0 -2px 8px #0000001a}.tenants-header.sticky{position:sticky;top:0}.tenants-header.relative{position:relative}.tenants-header.float{cursor:grab}.tenants-header.float:active{cursor:grabbing}.tenants-header.float.dragging,.tenants-header.dragging{opacity:.8;transform:scale(1.05)}.tenants-header .header-content{display:flex;justify-content:space-between;align-items:center;gap:var(--spacing-md)}.tenants-header .header-main{flex:1}.tenants-header .header-main .building-name{margin:0 0 var(--spacing-xs) 0;font-size:var(--text-xl);font-weight:700}.tenants-header .header-main .managed-by{margin:0;font-size:var(--text-sm);opacity:.9}.tenants-header .header-secondary{text-align:right}.tenants-header .header-secondary .contact-info{display:flex;flex-direction:column;gap:var(--spacing-xs);margin-bottom:var(--spacing-xs)}.tenants-header .header-secondary .contact-info .contact-item{font-size:var(--text-xs);opacity:.8;display:block}.tenants-header .header-secondary .date-time{font-size:var(--text-xs);opacity:.7}.tenants-header .drag-handle{position:absolute;top:4px;right:8px;font-size:12px;opacity:.6;cursor:grab;line-height:1}@media (max-width: 768px){.tenants-header .header-content{flex-direction:column;text-align:center;gap:var(--spacing-sm)}.tenants-header .header-secondary{text-align:center}.tenants-header .building-name{font-size:var(--text-lg)!important}}.tenants-footer{border-top:1px solid var(--border-color);cursor:pointer;transition:all var(--transition-fast);width:100%}.tenants-footer:hover{opacity:.9;transform:scale(1.01)}.tenants-footer.fixed{position:fixed;bottom:0;left:0;right:0;z-index:100}.tenants-footer.sticky{position:sticky;bottom:0}.tenants-footer.relative{position:relative}.tenants-footer.float{cursor:grab}.tenants-footer.float:active{cursor:grabbing}.tenants-footer.absolute{position:absolute;bottom:0;left:0;right:0;z-index:100}.tenants-footer .footer-content{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:var(--spacing-md);max-width:100%}.tenants-footer .footer-left{justify-self:start}.tenants-footer .footer-left .building-info h4{margin:0 0 var(--spacing-xs) 0;font-size:var(--text-lg);font-weight:600}.tenants-footer .footer-left .managed-by p{margin:0;font-size:var(--text-sm);opacity:.8}.tenants-footer .footer-center{justify-self:center}.tenants-footer .footer-right{justify-self:end}.tenants-footer .footer-right .contact-info{display:flex;flex-direction:column;gap:var(--spacing-xs);text-align:right}.tenants-footer .footer-right .contact-info .contact-item{font-size:var(--text-xs);opacity:.8;display:block}@media (max-width: 768px){.tenants-footer .footer-content{grid-template-columns:1fr;text-align:center;gap:var(--spacing-sm)}}.tenants-footer .footer-content{display:flex;justify-content:center;align-items:center;width:100%;padding:16px 24px}.tenants-footer .footer-content .contact-info{text-align:center}.tenants-footer .footer-content .footer-text-options{display:flex;flex-wrap:wrap;gap:12px 24px;width:100%;align-items:start;justify-content:center}.tenants-footer .footer-content .footer-text-item{display:flex;flex-direction:column;gap:4px;padding:8px 12px;background:#ffffff1a;border-radius:6px;border:1px solid rgba(255,255,255,.2);transition:all .2s ease}.tenants-footer .footer-content .footer-text-item:hover{background:#ffffff26;transform:translateY(-1px)}.tenants-footer .footer-content .footer-label{font-weight:600;font-size:.75em;text-transform:uppercase;letter-spacing:.5px;opacity:.8;margin-bottom:2px}.tenants-footer .footer-content .footer-value{font-weight:400;font-size:1em;line-height:1.4;word-break:break-word}@media (max-width: 768px){.footer-content{padding:12px 16px}.footer-text-item{padding:6px 10px}}@media (max-width: 480px){.footer-text-item{padding:4px 8px}}.hero-section{cursor:pointer;transition:all var(--transition-fast);background:#fff;border:2px dashed var(--border-color);display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;height:100%;width:100%}.hero-section:hover{opacity:.9;transform:scale(1.02)}.hero-section:has(.hero-image){border:none;background:transparent}.hero-section.hero-small{min-height:120px}.hero-section.hero-medium{min-height:200px}.hero-section.hero-large{min-height:300px}.hero-section .hero-image{width:100%;height:100%;object-fit:cover;position:absolute;top:0;left:0}.hero-section .hero-image[style*="object-fit: contain"]{object-fit:contain}.hero-section .hero-image[style*="object-fit: fill"]{object-fit:fill}.hero-section .hero-image[style*="object-fit: none"]{object-fit:none;width:auto;height:auto;position:relative;top:50%;left:50%;transform:translate(-50%,-50%);max-width:100%;max-height:100%}.hero-section .hero-placeholder{text-align:center;color:var(--text-secondary);z-index:1;background-color:#fff;opacity:.5;width:100%;height:100%;display:flex;justify-content:center;align-items:center;border-radius:5rem}.hero-section .hero-placeholder .upload-icon{font-size:14rem;font-weight:700;color:var(--text-primary);margin-bottom:var(--spacing-sm);line-height:1}.hero-section .hero-placeholder p{margin:0;font-size:var(--text-sm)}.tenant-list{width:100%;border:1px solid var(--border-color);border-radius:var(--border-radius-md);overflow:hidden}.tenant-list .tenant-list-header{cursor:pointer;transition:all var(--transition-fast)}.tenant-list .tenant-list-header:hover{opacity:.9;transform:scale(1.01)}.tenant-list .tenant-list-header .header-cell{padding:var(--spacing-sm);font-weight:600;display:flex;align-items:center;justify-content:flex-start}.tenant-list .tenant-list-header .header-cell[style*="text-align: center"]{justify-content:center}.tenant-list .tenant-list-header .header-cell[style*="text-align: right"]{justify-content:flex-end}.tenant-list .tenant-list-header .header-cell span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.tenant-list .tenant-list-body::-webkit-scrollbar{display:none}.tenant-list .tenant-list-body .tenant-row{cursor:pointer;transition:all var(--transition-fast)}.tenant-list .tenant-list-body .tenant-row:hover{opacity:.9;transform:scale(1.005);box-shadow:0 2px 4px #0000001a}.tenant-list .tenant-list-body .tenant-row:last-child{border-bottom:none}.tenant-list .tenant-list-body .tenant-row .row-cell{padding:var(--spacing-sm);display:flex;align-items:center;justify-content:flex-start}.tenant-list .tenant-list-body .tenant-row .row-cell[style*="text-align: center"]{justify-content:center}.tenant-list .tenant-list-body .tenant-row .row-cell[style*="text-align: right"]{justify-content:flex-end}.tenant-list .tenant-list-body .tenant-row .row-cell span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}@media (max-width: 768px){.tenant-list .tenant-list-header .header-cell,.tenant-list .tenant-list-header .row-cell,.tenant-list .tenant-row .header-cell,.tenant-list .tenant-row .row-cell{padding:var(--spacing-xs)}}.builder-preview{display:flex;flex-direction:column;overflow:hidden}.builder-preview .preview-container{flex:1;display:flex;flex-direction:column;height:calc(100% - 60px)}.builder-preview .preview-container .preview-frame{height:calc(100% - 60px);flex:1;display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative;transform-origin:top left}.preview-content{border-radius:var(--border-radius-md);overflow:hidden;position:relative;background:var(--bg-primary);box-shadow:0 4px 12px #00000026;border:1px solid var(--border-color);max-width:100%;max-height:100%}.preview-content .preview-hero{padding:var(--spacing-xl);text-align:center;cursor:pointer;transition:all var(--transition-fast);background:#fff;border:2px dashed var(--border-color);border-radius:var(--border-radius-md);min-height:200px;display:flex;align-items:center;justify-content:center}.preview-content .preview-hero:hover{opacity:.9;transform:scale(1.02)}.preview-content .preview-main{flex:1;padding:var(--spacing-md) 0;display:flex;flex-direction:column;min-height:0;width:100%}.preview-content .preview-main .preview-list .preview-header{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:var(--spacing-md);padding:var(--spacing-sm);border-radius:var(--border-radius-sm);margin-bottom:var(--spacing-sm);cursor:pointer;transition:all var(--transition-fast)}.preview-content .preview-main .preview-list .preview-header:hover{opacity:.9;transform:scale(1.01)}.preview-content .preview-main .preview-list .preview-header span{font-weight:600;font-size:var(--text-sm)}.preview-content .preview-main .preview-list .text-overlay{border-radius:var(--border-radius-sm);margin-bottom:var(--spacing-md);cursor:pointer;transition:all var(--transition-fast)}.preview-content .preview-main .preview-list .text-overlay:hover{opacity:.9;transform:scale(1.01)}.preview-content .preview-main .preview-list .text-overlay h2{font-size:var(--text-xl);font-weight:700;margin:0 0 var(--spacing-sm) 0}.preview-content .preview-main .preview-list .text-overlay p{font-size:var(--text-sm);margin:0;opacity:.9}.preview-content .preview-main .preview-list .preview-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:var(--spacing-md);padding:var(--spacing-sm);font-size:var(--text-sm);cursor:pointer;transition:all var(--transition-fast)}.preview-content .preview-main .preview-list .preview-row:hover{background:#0000000d}.preview-content .preview-main .preview-split{display:grid;grid-template-columns:calc(var(--first-column, 50%) - var(--spacing-sm)) calc(var(--second-column, 50%) - var(--spacing-sm));gap:var(--spacing-md);height:100%;min-height:300px;flex:1;overflow:hidden}.preview-content .preview-main .preview-two-column{display:grid;grid-template-columns:1fr 1fr;gap:var(--spacing-lg);height:100%;min-height:300px;flex:1;overflow:hidden}.preview-content .preview-main .preview-two-column .column-left,.preview-content .preview-main .preview-two-column .column-right{display:flex;flex-direction:column;overflow:hidden}.preview-content .preview-main .preview-two-column .preview-pane{border-radius:var(--border-radius-sm);cursor:pointer;transition:all var(--transition-fast);height:100%;display:flex;flex-direction:column}.preview-content .preview-main .preview-two-column .preview-pane:hover{opacity:.9;transform:scale(1.02)}.preview-content .preview-main .preview-two-column .preview-pane.hero-pane{background:#fff;display:flex;align-items:center;justify-content:center;flex:1}.preview-content .preview-main .preview-two-column .preview-pane.hero-pane .image-upload-placeholder{border:2px dashed var(--border-color);text-align:center;color:var(--text-secondary);padding:var(--spacing-lg)}.preview-content .preview-main .preview-two-column .preview-pane.hero-pane .image-upload-placeholder .upload-icon{font-size:3rem;font-weight:700;color:var(--accent-primary);margin-bottom:var(--spacing-sm);line-height:1}.preview-content .preview-main .preview-two-column .preview-pane.hero-pane .image-upload-placeholder p{margin:0;font-size:var(--text-sm)}.preview-content .preview-main .preview-two-column .preview-pane.tenant-pane{flex:1}.preview-content .preview-main .preview-two-column .preview-pane.tenant-pane .preview-list{height:100%;overflow:hidden;display:flex;flex-direction:column;flex:1}.preview-content .preview-main .preview-image-tenant{display:flex;flex-direction:column;height:100%;min-height:300px;flex:1;overflow:hidden}.preview-content .preview-main .preview-image-tenant .preview-image-section{flex:0 0 var(--image-section-size, 50%);margin-bottom:var(--spacing-md);border-radius:var(--border-radius-sm);cursor:pointer;transition:all var(--transition-fast)}.preview-content .preview-main .preview-image-tenant .preview-image-section:hover{opacity:.9;transform:scale(1.01)}.preview-content .preview-main .preview-image-tenant .preview-image-section .image-tenant-hero{height:100%;width:100%}.preview-content .preview-main .preview-image-tenant .preview-tenant-section{flex:0 0 calc(100% - var(--image-section-size, 50%));overflow:hidden;border-radius:var(--border-radius-sm);cursor:pointer;transition:all var(--transition-fast)}.preview-content .preview-main .preview-image-tenant .preview-tenant-section:hover{opacity:.9;transform:scale(1.01)}.preview-content .preview-main .preview-pagination{padding:var(--spacing-sm);text-align:center;border-radius:var(--border-radius-sm);margin-top:var(--spacing-md);cursor:pointer;transition:all var(--transition-fast)}.preview-content .preview-main .preview-pagination:hover{opacity:.9;transform:scale(1.01)}