:root{--bg-app:#f1f5f9;--bg-surface:#fff;--primary:#2563eb;--primary-hover:#1d4ed8;--primary-light:#eff6ff;--text-main:#0f172a;--text-muted:#64748b;--border:#e2e8f0;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000001a, 0 2px 4px -2px #0000001a;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -4px #0000001a;--radius-md:.5rem;--radius-lg:.75rem;--radius-full:9999px;--font-sans:"Inter", system-ui, -apple-system, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg-app);color:var(--text-main);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.app-container{width:100vw;height:100vh;display:flex;overflow:hidden}.sidebar{background:var(--bg-surface);border-right:1px solid var(--border);flex-direction:column;width:260px;padding:1.5rem 1rem;display:flex}.sidebar-brand{color:var(--primary);align-items:center;gap:.5rem;margin-bottom:2rem;padding:0 .75rem;font-size:1.25rem;font-weight:700;display:flex}.nav-menu{flex-direction:column;gap:.5rem;list-style:none;display:flex}.nav-item{border-radius:var(--radius-md);color:var(--text-muted);cursor:pointer;-webkit-user-select:none;user-select:none;align-items:center;gap:.75rem;padding:.75rem 1rem;font-weight:500;transition:all .2s;display:flex}.nav-item:hover{background-color:var(--primary-light);color:var(--primary)}.nav-item.active{background-color:var(--primary);color:#fff}.main-content{flex-direction:column;flex:1;display:flex;overflow:hidden}.topbar{background:var(--bg-surface);border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;height:64px;padding:0 2rem;display:flex}.page-wrapper{flex:1;padding:2rem;overflow-y:auto}h1,h2,h3,h4,h5,h6{color:var(--text-main);margin-bottom:1rem;font-weight:600}.page-title{margin-bottom:.25rem;font-size:1.875rem;font-weight:700}.page-subtitle{color:var(--text-muted);margin-bottom:2rem;font-size:.875rem}.card{background:var(--bg-surface);border-radius:var(--radius-lg);border:1px solid var(--border);box-shadow:var(--shadow-sm);padding:1.5rem}.btn{border-radius:var(--radius-md);cursor:pointer;border:1px solid #0000;justify-content:center;align-items:center;gap:.5rem;padding:.5rem 1rem;font-size:.875rem;font-weight:500;transition:all .2s;display:inline-flex}.btn-primary{background-color:var(--primary);color:#fff}.btn-primary:hover{background-color:var(--primary-hover);box-shadow:var(--shadow-md)}.btn-outline{border-color:var(--border);color:var(--text-main);background-color:#0000}.btn-outline:hover{background-color:var(--bg-app);border-color:var(--text-muted)}.glass{-webkit-backdrop-filter:blur(10px);background:#ffffffb3;border:1px solid #ffffff4d}.view-toggle{background:var(--bg-app);border-radius:var(--radius-md);border:1px solid var(--border);padding:.25rem;display:inline-flex}.view-toggle-btn{cursor:pointer;color:var(--text-muted);background:0 0;border:none;border-radius:.25rem;padding:.375rem .75rem;font-size:.875rem;font-weight:500;transition:all .2s}.view-toggle-btn.active{background:var(--bg-surface);color:var(--text-main);box-shadow:var(--shadow-sm)}.dashboard-grid{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1.5rem;display:grid}.stat-card{border-radius:var(--radius-lg);background:var(--bg-surface);border:1px solid var(--border);box-shadow:var(--shadow-sm);flex-direction:column;padding:1.5rem;display:flex}.stat-value{color:var(--primary);margin-top:.5rem;font-size:2rem;font-weight:700}.stat-label{color:var(--text-muted);font-size:.875rem;font-weight:500}.table-wrapper{border-radius:var(--radius-md);border:1px solid var(--border);background:var(--bg-surface);width:100%;overflow-x:auto}.table{border-collapse:collapse;text-align:left;width:100%}.table th,.table td{border-bottom:1px solid var(--border);padding:1rem}.table th{background:var(--bg-app);color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;font-size:.875rem;font-weight:600}.table tr:last-child td{border-bottom:none}.table tbody tr:hover{background-color:var(--primary-light)}.kanban-board{gap:1.5rem;height:calc(100vh - 200px);padding-bottom:1rem;display:flex;overflow-x:auto}.kanban-column{background:var(--bg-app);border-radius:var(--radius-lg);border:1px solid var(--border);flex-direction:column;width:320px;min-width:320px;padding:1rem;display:flex}.kanban-header{justify-content:space-between;align-items:center;margin-bottom:1rem;font-weight:600;display:flex}.kanban-count{background:var(--border);border-radius:var(--radius-full);padding:.125rem .5rem;font-size:.75rem}.kanban-cards{flex-direction:column;flex:1;gap:.75rem;display:flex;overflow-y:auto}.kanban-card{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);cursor:pointer;padding:1rem;transition:transform .2s,box-shadow .2s}.kanban-card:hover{box-shadow:var(--shadow-md);border-color:var(--primary);transform:translateY(-2px)}.task-tag{background:var(--primary-light);color:var(--primary);border-radius:var(--radius-full);margin-bottom:.5rem;padding:.25rem .5rem;font-size:.75rem;font-weight:500;display:inline-block}.task-title{margin-bottom:.5rem;font-weight:500}.task-meta{color:var(--text-muted);justify-content:space-between;align-items:center;font-size:.75rem;display:flex}.badge{border-radius:var(--radius-full);align-items:center;padding:.25rem .5rem;font-size:.75rem;font-weight:500;display:inline-flex}.badge-success{color:#166534;background:#dcfce7}.badge-warning{color:#854d0e;background:#fef9c3}.badge-danger{color:#991b1b;background:#fee2e2}.badge-info{color:#075985;background:#e0f2fe}.filter-bar{background:var(--bg-surface);justify-content:space-between;align-items:center;gap:1rem;margin-bottom:1.5rem;padding:1rem 1.5rem;display:flex}.filter-group{flex:1;align-items:center;gap:1rem;display:flex}.form-input,.form-select{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--bg-surface);color:var(--text-main);font-family:var(--font-sans);outline:none;padding:.5rem .75rem;font-size:.875rem;transition:border-color .2s}.form-input:focus,.form-select:focus{border-color:var(--primary);box-shadow:0 0 0 2px var(--primary-light)}.form-input{width:100%;max-width:300px}.form-label{color:var(--text-muted);margin-bottom:.5rem;font-size:.875rem;font-weight:500;display:block}.form-group{margin-bottom:1.5rem}.slide-over-backdrop{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1000;opacity:0;pointer-events:none;background:#0f172a66;width:100vw;height:100vh;transition:opacity .3s;position:fixed;top:0;left:0}.slide-over-backdrop.open{opacity:1;pointer-events:auto}.slide-over-panel{background:var(--bg-surface);width:min(960px,55vw);min-width:min(100vw,600px);height:100%;box-shadow:var(--shadow-lg);flex-direction:column;transition:transform .3s cubic-bezier(.16,1,.3,1);display:flex;position:absolute;top:0;right:0;transform:translate(100%)}.slide-over-panel.open{transform:translate(0)}.slide-over-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:1.5rem;display:flex}.slide-over-content{flex:1;padding:1.5rem;overflow-y:auto}.slide-over-footer{border-top:1px solid var(--border);background:var(--bg-app);justify-content:flex-end;gap:1rem;padding:1.5rem;display:flex}.task-detail{flex-direction:column;height:100%;display:flex}.task-detail-grid{grid-template-columns:2fr 1fr;gap:1.5rem;margin-top:1rem;display:grid}@media (width<=768px){.task-detail-grid{grid-template-columns:1fr}}.preview-btn{color:var(--text-muted);border-radius:var(--radius-md);cursor:pointer;background:0 0;border:1px solid #0000;justify-content:center;align-items:center;padding:.25rem;transition:all .2s;display:inline-flex}.preview-btn:hover{background:var(--bg-app);color:var(--primary);border-color:var(--border)}.split-view-container{gap:1.5rem;height:calc(100vh - 120px);display:flex;overflow:hidden}.split-view-list{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-lg);flex-direction:column;width:350px;min-width:350px;display:flex;overflow:hidden}.ticket-item{border-bottom:1px solid var(--border);cursor:pointer;padding:1rem;transition:background-color .2s}.ticket-item:hover{background:var(--bg-app)}.ticket-item.active{background:var(--primary-light);border-left:3px solid var(--primary)}.split-view-detail{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-lg);flex-direction:column;flex:1;display:flex;overflow:hidden}.activity-stream{flex-direction:column;flex:1;gap:1.5rem;padding:1.5rem;display:flex;overflow-y:auto}.activity-item{gap:1rem;max-width:80%;display:flex}.activity-item.customer-reply{align-self:flex-start}.activity-item.agent-reply{flex-direction:row-reverse;align-self:flex-end}.activity-avatar{background:var(--primary);color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;font-size:.875rem;font-weight:600;display:flex}.activity-item.customer-reply .activity-avatar{background:var(--text-muted)}.activity-content{background:var(--bg-app);border-radius:var(--radius-lg);border:1px solid var(--border);padding:1rem}.activity-item.agent-reply .activity-content{background:var(--primary-light);border-color:var(--primary)}.activity-item.activity-internal-note .activity-content{box-shadow:0 4px 6px -1px #f59e0b1a;background:#fffbeb!important;border:2px solid #f59e0b!important}.activity-email .activity-content{background:#fff;box-shadow:0 1px 3px #0000001a}.activity-item.agent-reply.activity-email .activity-content{background:#f0fdf4;border-color:#86efac}.activity-meta{color:var(--text-muted);justify-content:space-between;gap:1rem;margin-bottom:.5rem;font-size:.75rem;display:flex}.reply-box{border-top:1px solid var(--border);background:var(--bg-surface);padding:1rem}.reply-box-tabs{gap:1rem;margin-bottom:.5rem;display:flex}.reply-tab{cursor:pointer;border-radius:var(--radius-md);color:var(--text-muted);padding:.5rem 1rem;font-size:.875rem;font-weight:500}.reply-tab.active.email{background:var(--primary);color:#fff}.reply-tab.active.note{color:#854d0e;background:#fcd34d}