@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{transform:translateX(-10px);opacity:0}to{transform:translateX(0);opacity:1}}:root{--primary-color:#25D366;--secondary-color:#075E54;--accent-color:#128C7E;--dark-color:#1f2937;--light-color:#f8fafc;--border-color:#e5e7eb;--text-muted:#6b7280;--sidebar-width:280px;--navbar-height:60px;--danger-color:#dc3545;--warning-color:#ffc107;--info-color:#0dcaf0;--success-color:#198754}body{font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;background-color:var(--light-color);line-height:1.6}.loading-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(255,255,255,.9);display:flex;justify-content:center;align-items:center;z-index:9999;backdrop-filter:blur(2px);transition:opacity .3s ease;opacity:0;visibility:hidden}.loading-overlay.show{opacity:1;visibility:visible}.navbar{height:var(--navbar-height);box-shadow:0 2px 4px rgba(0,0,0,.1);background:linear-gradient(135deg,var(--primary-color) 0%,var(--secondary-color) 100%)!important}.navbar-brand{font-weight:600;font-size:1.25rem}.card:hover{transform:translateY(-2px);box-shadow:0 4px 20px rgba(0,0,0,.12)}.card-header{background:linear-gradient(135deg,#f8f9fa,#e9ecef);border-bottom:1px solid var(--border-color);border-radius:12px 12px 0 0!important;padding:1rem 1.25rem}.card-title{margin-bottom:0;font-weight:600}.btn{border-radius:8px;font-weight:500;padding:.5rem 1rem;transition:all .2s ease}.btn-primary{background:linear-gradient(135deg,var(--primary-color),var(--accent-color));border:0}.btn-primary:hover{background:linear-gradient(135deg,var(--accent-color),var(--secondary-color));transform:translateY(-1px);box-shadow:0 4px 12px rgba(37,211,102,.3)}.btn-outline-primary{border-color:var(--primary-color);color:var(--primary-color)}.btn-outline-primary:hover{background-color:var(--primary-color);border-color:var(--primary-color)}.form-control,.form-select{border-radius:8px;border:1px solid var(--border-color);padding:.65rem .75rem;transition:all .2s ease}.auth-card .form-control:focus,.form-control:focus,.form-select:focus{border-color:var(--primary-color);box-shadow:0 0 0 .2rem rgba(37,211,102,.25)}.auth-header h1,.form-label{font-weight:500;margin-bottom:.5rem;color:var(--dark-color)}.stat-card{background:linear-gradient(135deg,#fff,#f8f9fa);border-left:4px solid var(--primary-color);transition:all .3s ease}.stat-card:hover{border-left-width:6px;transform:translateY(-2px)}.stat-icon{width:50px;height:50px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.5rem;color:#fff}.stat-icon.primary{background:linear-gradient(135deg,var(--primary-color),var(--accent-color))}.stat-icon.success{background:linear-gradient(135deg,var(--success-color),#20c997)}.stat-icon.warning{background:linear-gradient(135deg,var(--warning-color),#fd7e14)}.stat-icon.danger{background:linear-gradient(135deg,var(--danger-color),#e55353)}.auth-header p,.table{margin-bottom:0}.table th{border-top:none;font-weight:600;color:var(--dark-color);padding:1rem .75rem;background-color:#f8f9fa}.table td{padding:.75rem;vertical-align:middle}.table-responsive{border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,.08)}.badge{font-weight:500;padding:.35em .65em;border-radius:6px}.qr-container{display:flex;justify-content:center;align-items:center;padding:2rem;background:linear-gradient(135deg,#f8f9fa,#e9ecef);border-radius:12px;margin:1rem 0}.qr-code{max-width:256px;width:100%;height:auto;border-radius:8px;box-shadow:0 4px 16px rgba(0,0,0,.1)}.device-status{display:inline-flex;align-items:center;padding:.25rem .75rem;border-radius:20px;font-size:.875rem;font-weight:500}.device-status.connected{background-color:rgba(25,135,84,.1);color:var(--success-color)}.device-status.connecting{background-color:rgba(255,193,7,.1);color:var(--warning-color)}.device-status.disconnected{background-color:rgba(220,53,69,.1);color:var(--danger-color)}.device-status::before{content:"";display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:.5rem;background-color:currentColor;animation:pulse 2s infinite}.message-timeline{position:relative;padding-left:2rem}.message-timeline::before{content:"";position:absolute;left:.5rem;top:0;bottom:0;width:2px;background:var(--border-color)}.message-item{position:relative;margin-bottom:1.5rem}.message-item::before{content:"";position:absolute;left:-1.75rem;top:.25rem;width:10px;height:10px;border-radius:50%;background:var(--primary-color);border:2px solid #fff;box-shadow:0 0 0 2px var(--primary-color)}.footer{background-color:#fff;border-top:1px solid var(--border-color);padding:1rem 0;margin-top:2rem}.footer.with-sidebar{margin-left:0;transition:margin-left .3s ease}.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--primary-color) 0%,var(--secondary-color) 100%)}.auth-card{width:100%;max-width:400px;border-radius:20px}.auth-header h1{font-size:1.8rem;font-weight:600;color:var(--text-primary)}.auth-header p{color:var(--text-muted)}@media (min-width:768px){.sidebar.show{transform:translateX(0)}.footer.with-sidebar,.main-content.with-sidebar{margin-left:var(--sidebar-width)}}@media (max-width:767px){.sidebar{width:100%;transform:translateX(-100%)}.sidebar.show{transform:translateX(0)}.main-content.with-sidebar{margin-left:0}.card{margin-bottom:1rem}.stat-card .row>div:not(:last-child){margin-bottom:1rem}}.fade-in{animation:fadeIn .3s ease-in}.slide-in{animation:slideIn .3s ease-out}.sidebar-menu::-webkit-scrollbar{width:4px}.sidebar-menu::-webkit-scrollbar-track{background:0 0}.sidebar-menu::-webkit-scrollbar-thumb{background:rgba(37,211,102,.3);border-radius:2px}.sidebar-menu::-webkit-scrollbar-thumb:hover{background:rgba(37,211,102,.5)}.file-upload{position:relative;display:inline-block;width:100%}.file-upload input[type=file]{position:absolute;left:-9999px}.file-upload-label{display:block;padding:.75rem;border:2px dashed var(--border-color);border-radius:8px;text-align:center;cursor:pointer;transition:all .2s ease;background:#f8f9fa}.file-upload-label:hover{border-color:var(--primary-color);background:rgba(37,211,102,.05)}.file-upload-label.dragover{border-color:var(--primary-color);background:rgba(37,211,102,.1)}.progress{height:8px;border-radius:4px;background-color:#e9ecef}.progress-bar{border-radius:4px;background:linear-gradient(90deg,var(--primary-color),var(--accent-color))}.auth-page{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:2rem 1rem}.auth-container{width:100%;max-width:500px;margin:0 auto}.auth-card{border-radius:1rem;padding:3rem 2.5rem;box-shadow:0 20px 40px rgba(0,0,0,.1);backdrop-filter:blur(10px);background:rgba(255,255,255,.95);border:1px solid rgba(255,255,255,.2)}.auth-header{text-align:center;margin-bottom:2rem}.brand-logo{display:inline-block;font-size:3rem;background:linear-gradient(135deg,var(--whatsapp-green),var(--whatsapp-dark));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.password-strength{height:4px;background-color:var(--border-color);border-radius:2px;overflow:hidden;transition:all .3s ease}.strength-weak{background-color:#dc3545;width:20%}.strength-fair{background-color:#ffc107;width:40%}.strength-good{background-color:#28a745;width:60%}.strength-strong{background-color:#20c997;width:80%}.auth-card .form-control{padding:.75rem 1rem;border-radius:.5rem;border:1px solid var(--border-color);background:var(--card-bg)}.auth-card .btn{padding:.75rem 1.5rem;border-radius:.5rem;font-weight:500;transition:all .3s ease}.auth-card .btn-primary{background:linear-gradient(135deg,var(--whatsapp-green),var(--whatsapp-dark));border:0;color:#fff}.auth-card .btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(37,211,102,.4)}.auth-card .btn-outline-primary{border-color:var(--primary-color);color:var(--primary-color)}.auth-card .btn-outline-primary:hover{background:var(--primary-color);border-color:var(--primary-color);color:#fff}.auth-card .alert{border-radius:.5rem;border:0;padding:1rem}.auth-card .modal-content{border-radius:1rem;border:0;box-shadow:0 20px 40px rgba(0,0,0,.15)}.auth-card .modal-header{border-bottom:1px solid var(--border-color);padding:1.5rem}.auth-card .modal-body{padding:1.5rem}.auth-card .modal-footer{border-top:1px solid var(--border-color);padding:1.5rem}@media (max-width:768px){.sidebar{transform:translateX(-100%);width:280px}.sidebar.active{transform:translateX(0)}.main-content{margin-left:0;padding:1rem}.navbar{padding-left:1rem}.stats-grid{grid-template-columns:1fr}.device-card{padding:1rem}.qr-code{max-width:200px}.form-grid{grid-template-columns:1fr}.auth-card{padding:2rem 1.5rem;margin:1rem}.auth-container{max-width:100%}.brand-logo{font-size:2.5rem}}@media (prefers-color-scheme:dark){:root{--dark-color:#f8fafc;--light-color:#1f2937;--border-color:#374151;--text-muted:#9ca3af}}