:root{--color-primary: #1e40af;--color-primary-dark: #1e3a8a;--color-accent: #3b82f6;--color-bg: #f1f5f9;--color-surface: #ffffff;--color-text: #1e293b;--color-text-muted: #64748b;--color-border: #e2e8f0;--color-error: #dc2626;--color-success: #16a34a;--color-inbound: #f0f9ff;--color-outbound: #eff6ff;--sidebar-width: 320px;--header-height: 56px;--radius: 8px;--shadow: 0 1px 3px rgba(0,0,0,.1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--color-bg);color:var(--color-text)}.login-container{display:flex;align-items:center;justify-content:center;min-height:100vh}.login-form{background:var(--color-surface);padding:2rem;border-radius:var(--radius);box-shadow:var(--shadow);width:100%;max-width:400px}.login-title{margin-bottom:1.5rem;font-size:1.5rem;color:var(--color-primary)}.login-error{background:#fee2e2;color:var(--color-error);padding:.75rem;border-radius:var(--radius);margin-bottom:1rem;font-size:.875rem}.form-group{margin-bottom:1rem}.form-group label{display:block;font-size:.875rem;font-weight:500;margin-bottom:.25rem;color:var(--color-text-muted)}.form-group input,.form-group select,.form-group textarea{width:100%;padding:.5rem .75rem;border:1px solid var(--color-border);border-radius:var(--radius);font-size:1rem;outline:none;transition:border-color .15s}.form-group input:focus{border-color:var(--color-accent)}.btn-primary{background:var(--color-primary);color:#fff;border:none;padding:.6rem 1.25rem;border-radius:var(--radius);font-size:.9375rem;cursor:pointer;transition:background .15s}.btn-primary:hover:not(:disabled){background:var(--color-primary-dark)}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.btn-secondary{background:var(--color-bg);color:var(--color-text);border:1px solid var(--color-border);padding:.6rem 1.25rem;border-radius:var(--radius);cursor:pointer}.app-layout{display:flex;height:100vh;overflow:hidden}.sidebar{width:var(--sidebar-width);background:var(--color-surface);border-right:1px solid var(--color-border);display:flex;flex-direction:column;overflow:hidden}.sidebar-header{padding:1rem;border-bottom:1px solid var(--color-border);font-weight:600;color:var(--color-primary)}.sidebar-list{flex:1;overflow-y:auto}.conv-item{padding:.75rem 1rem;border-bottom:1px solid var(--color-border);cursor:pointer;transition:background .1s}.conv-item:hover{background:var(--color-bg)}.conv-item.active{background:#eff6ff;border-left:3px solid var(--color-accent)}.conv-item-name{font-weight:500;font-size:.9375rem}.conv-item-preview{font-size:.8125rem;color:var(--color-text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conv-item-status{display:inline-block;font-size:.75rem;padding:.15rem .5rem;border-radius:9999px}.status-new{background:#fef3c7;color:#92400e}.status-in_progress{background:#dbeafe;color:#1e40af}.status-resolved{background:#d1fae5;color:#065f46}.main-content,.chat-window{flex:1;display:flex;flex-direction:column;overflow:hidden}.chat-messages{flex:1;overflow-y:auto;padding:1rem;display:flex;flex-direction:column;gap:.5rem}.message-bubble{max-width:70%;padding:.5rem .75rem;border-radius:var(--radius)}.message-inbound{align-self:flex-start;background:var(--color-inbound)}.message-outbound{align-self:flex-end;background:var(--color-outbound)}.message-content{font-size:.9375rem}.message-time{font-size:.75rem;color:var(--color-text-muted);text-align:right;margin-top:.25rem}.chat-input{padding:1rem;border-top:1px solid var(--color-border);display:flex;gap:.5rem}.chat-input textarea{flex:1;resize:none;padding:.5rem;border:1px solid var(--color-border);border-radius:var(--radius);font-size:.9375rem;font-family:inherit}.page-header{padding:1rem 1.5rem;background:var(--color-surface);border-bottom:1px solid var(--color-border);display:flex;align-items:center;justify-content:space-between;height:var(--header-height)}.page-title{font-size:1.125rem;font-weight:600}.stats-charts{display:flex;flex-direction:column;gap:1.5rem}.chart-block{background:var(--color-surface);padding:1.25rem;border-radius:var(--radius);box-shadow:var(--shadow)}.chart-block h3{margin-bottom:1rem;font-size:1rem;color:var(--color-text-muted)}.data-table{width:100%;border-collapse:collapse}.data-table th,.data-table td{padding:.75rem 1rem;text-align:left;border-bottom:1px solid var(--color-border);font-size:.875rem}.data-table th{font-weight:600;background:var(--color-bg)}.totp-setup{max-width:480px;margin:2rem auto;padding:2rem;background:var(--color-surface);border-radius:var(--radius)}.totp-qr{display:block;margin:1rem auto;max-width:200px}.totp-secret{font-size:.875rem;margin:1rem 0;word-break:break-all}