:root{--bg: #f4f6f9;--surface: #ffffff;--surface-alt: #f8fafc;--border: #e2e8f0;--border-strong: #cbd5e1;--text: #0f172a;--text-muted: #64748b;--primary: #2563eb;--primary-dark: #1d4ed8;--primary-soft: #eff6ff;--success: #059669;--success-soft: #ecfdf5;--warning: #b45309;--warning-soft: #fffbeb;--danger: #dc2626;--danger-soft: #fef2f2;--customer: #7c3aed;--customer-soft: #f5f3ff;--radius: 10px;--radius-sm: 6px;--shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 1px 3px rgba(15, 23, 42, .1);--shadow-lg: 0 10px 25px -5px rgba(15, 23, 42, .1);--font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:var(--font);font-size:15px;line-height:1.55;-webkit-font-smoothing:antialiased}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.topbar{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:20}.topbar-inner{max-width:1180px;margin:0 auto;padding:0 24px;height:60px;display:flex;align-items:center;gap:24px}.brand{font-weight:650;font-size:16px;color:var(--text);display:flex;align-items:center;gap:9px}.brand:hover{text-decoration:none}.brand-mark{width:28px;height:28px;border-radius:8px;background:var(--primary);color:#fff;display:grid;place-items:center;font-size:14px;font-weight:700}.topbar-nav{display:flex;gap:4px;margin-left:8px}.topbar-nav a{color:var(--text-muted);padding:6px 12px;border-radius:var(--radius-sm);font-weight:500;font-size:14px}.topbar-nav a:hover{background:var(--surface-alt);color:var(--text);text-decoration:none}.topbar-nav a.active{background:var(--primary-soft);color:var(--primary-dark)}.topbar-right{margin-left:auto;display:flex;align-items:center;gap:14px}.topbar-user{color:var(--text-muted);font-size:13.5px}.page{max-width:1180px;margin:0 auto;padding:28px 24px 64px}.page-header{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:22px;flex-wrap:wrap}.page-title{margin:0;font-size:22px;font-weight:640;letter-spacing:-.01em}.page-subtitle{margin:4px 0 0;color:var(--text-muted);font-size:14px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.card+.card{margin-top:20px}.card-header{padding:16px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}.card-title{margin:0;font-size:15px;font-weight:620}.card-body{padding:20px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;border:1px solid transparent;border-radius:var(--radius-sm);padding:8px 15px;font:inherit;font-size:14px;font-weight:550;cursor:pointer;background:var(--surface);color:var(--text);border-color:var(--border-strong);white-space:nowrap;transition:background .12s ease,border-color .12s ease}.btn:hover{text-decoration:none;background:var(--surface-alt)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark)}.btn-ghost{background:transparent;border-color:transparent;color:var(--text-muted)}.btn-ghost:hover{background:var(--surface-alt);color:var(--text)}.btn-sm{padding:5px 11px;font-size:13px}.field{margin-bottom:18px}.field:last-child{margin-bottom:0}.label{display:block;font-size:13.5px;font-weight:580;margin-bottom:6px}.hint{color:var(--text-muted);font-size:12.5px;margin-top:6px}.input,.select,.textarea{width:100%;padding:9px 12px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--surface);color:var(--text);font:inherit;font-size:14.5px}.input:focus,.select:focus,.textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #2563eb1f}.textarea{resize:vertical;min-height:120px;line-height:1.6}.input[type=file]{padding:8px;font-size:13.5px}.field-error{color:var(--danger);font-size:12.5px;margin-top:5px}.input.is-invalid,.select.is-invalid,.textarea.is-invalid{border-color:var(--danger)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}.form-actions{display:flex;align-items:center;gap:12px;padding-top:4px}.sender-preview{display:flex;align-items:center;gap:10px;padding:11px 14px;background:var(--primary-soft);border:1px solid #bfdbfe;border-radius:var(--radius-sm);font-size:14px}.sender-preview .sender-label{color:var(--text-muted);font-size:13px}.sender-preview .sender-email{font-family:var(--mono);font-size:13.5px;color:var(--primary-dark);font-weight:600}.alert{padding:12px 16px;border-radius:var(--radius-sm);border:1px solid;margin-bottom:20px;font-size:14px}.alert-success{background:var(--success-soft);border-color:#a7f3d0;color:#065f46}.alert-danger{background:var(--danger-soft);border-color:#fecaca;color:#991b1b}.alert-warning{background:var(--warning-soft);border-color:#fde68a;color:#92400e}.alert ul{margin:6px 0 0;padding-left:18px}.table-wrap{overflow-x:auto}.table{width:100%;border-collapse:collapse;font-size:14px}.table th{text-align:left;padding:11px 16px;font-size:11.5px;font-weight:620;letter-spacing:.04em;text-transform:uppercase;color:var(--text-muted);background:var(--surface-alt);border-bottom:1px solid var(--border);white-space:nowrap}.table td{padding:13px 16px;border-bottom:1px solid var(--border);vertical-align:middle}.table tbody tr:last-child td{border-bottom:none}.table tbody tr:hover{background:var(--surface-alt)}.ticket-number{font-family:var(--mono);font-size:12.5px;color:var(--text-muted)}.ticket-subject{font-weight:560;color:var(--text);display:block}.ticket-subject:hover{color:var(--primary);text-decoration:none}.cell-muted{color:var(--text-muted);font-size:13.5px}.nowrap{white-space:nowrap}.empty-state{padding:56px 20px;text-align:center;color:var(--text-muted)}.empty-state h3{margin:0 0 6px;color:var(--text);font-size:16px}.badge{display:inline-flex;align-items:center;gap:5px;padding:3px 9px;border-radius:999px;font-size:12px;font-weight:580;border:1px solid transparent;white-space:nowrap}.badge:before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}.badge-open{background:var(--success-soft);color:var(--success);border-color:#a7f3d0}.badge-pending{background:var(--warning-soft);color:var(--warning);border-color:#fde68a}.badge-closed{background:#f1f5f9;color:var(--text-muted);border-color:var(--border-strong)}.badge-plain:before{display:none}.badge-low{background:#f1f5f9;color:var(--text-muted)}.badge-normal{background:var(--primary-soft);color:var(--primary-dark)}.badge-high{background:var(--warning-soft);color:var(--warning)}.badge-urgent{background:var(--danger-soft);color:var(--danger)}.filters{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.filters .input,.filters .select{width:auto;min-width:200px}.filter-tabs{display:flex;gap:4px;flex-wrap:wrap}.filter-tabs a{padding:6px 13px;border-radius:999px;font-size:13px;font-weight:540;color:var(--text-muted);border:1px solid var(--border);background:var(--surface)}.filter-tabs a:hover{text-decoration:none;background:var(--surface-alt)}.filter-tabs a.active{background:var(--text);color:#fff;border-color:var(--text)}.filter-tabs .count{opacity:.65;margin-left:4px}.ticket-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:20px;align-items:start}.meta-list{margin:0}.meta-list dt{font-size:11.5px;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted);font-weight:620;margin-bottom:3px}.meta-list dd{margin:0 0 14px;font-size:14px;word-break:break-word}.meta-list dd:last-child{margin-bottom:0}.thread{display:flex;flex-direction:column;gap:16px;padding:20px}.message{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);overflow:hidden;max-width:88%}.message-support{align-self:flex-start;border-left:3px solid var(--primary)}.message-customer{align-self:flex-end;border-left:3px solid var(--customer);background:var(--surface-alt)}.message-system{align-self:center;max-width:100%;border-left:3px solid var(--border-strong)}.message-head{display:flex;align-items:center;gap:10px;padding:10px 16px;border-bottom:1px solid var(--border);background:var(--surface-alt);flex-wrap:wrap}.message-customer .message-head{background:var(--customer-soft)}.message-support .message-head{background:var(--primary-soft)}.avatar{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-size:11.5px;font-weight:680;color:#fff;flex-shrink:0}.message-support .avatar{background:var(--primary)}.message-customer .avatar{background:var(--customer)}.message-system .avatar{background:var(--text-muted)}.message-who{font-weight:620;font-size:13.5px}.message-email{color:var(--text-muted);font-size:12.5px;font-family:var(--mono)}.message-time{margin-left:auto;color:var(--text-muted);font-size:12.5px;white-space:nowrap}.message-body{padding:14px 16px;font-size:14.5px;word-wrap:break-word;overflow-wrap:anywhere}.message-body p:first-child{margin-top:0}.message-body p:last-child{margin-bottom:0}.message-body blockquote{margin:10px 0;padding:2px 0 2px 12px;border-left:3px solid var(--border-strong);color:var(--text-muted)}.message-body img{max-width:100%;height:auto;border-radius:var(--radius-sm)}.message-body table{border-collapse:collapse;max-width:100%}.message-body td,.message-body th{border:1px solid var(--border);padding:5px 8px}.message-body pre{overflow-x:auto;background:var(--surface-alt);padding:10px;border-radius:var(--radius-sm)}.message-flag{display:flex;gap:8px;padding:9px 16px;background:var(--warning-soft);border-bottom:1px solid #fde68a;color:#92400e;font-size:13px}.message-status{padding:7px 16px;border-top:1px solid var(--border);font-size:12.5px;color:var(--text-muted);display:flex;align-items:center;gap:6px}.message-status.is-failed{background:var(--danger-soft);color:#991b1b;border-top-color:#fecaca}.attachments{display:flex;flex-wrap:wrap;gap:10px;padding:0 16px 14px}.attachment{display:flex;align-items:center;gap:10px;padding:8px 12px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);max-width:280px}.attachment-icon{width:30px;height:30px;border-radius:var(--radius-sm);background:var(--surface-alt);display:grid;place-items:center;font-size:10px;font-weight:700;color:var(--text-muted);text-transform:uppercase;flex-shrink:0}.attachment-meta{min-width:0}.attachment-name{display:block;font-size:13px;font-weight:550;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.attachment-size{font-size:11.5px;color:var(--text-muted)}.attachment-thumb{border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;background:var(--surface-alt);display:block;max-width:200px}.attachment-thumb img{display:block;max-width:200px;max-height:150px;object-fit:cover}.attachment-thumb .attachment-caption{padding:6px 9px;font-size:11.5px;color:var(--text-muted);border-top:1px solid var(--border);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;background:var(--surface)}.reply-box{border-top:1px solid var(--border);padding:18px 20px;background:var(--surface-alt)}.reply-closed{padding:20px;text-align:center;color:var(--text-muted);background:var(--surface-alt);border-top:1px solid var(--border)}.file-list{margin-top:8px;display:flex;flex-wrap:wrap;gap:6px}.file-chip{font-size:12px;background:var(--surface);border:1px solid var(--border);border-radius:999px;padding:3px 10px;color:var(--text-muted)}.auth-wrap{min-height:100vh;display:grid;place-items:center;padding:24px}.auth-card{width:100%;max-width:400px}.auth-head{text-align:center;margin-bottom:22px}.auth-head h1{font-size:20px;margin:12px 0 4px}.auth-head p{color:var(--text-muted);margin:0;font-size:14px}.auth-demo{margin-top:16px;padding:11px 14px;background:var(--surface-alt);border:1px dashed var(--border-strong);border-radius:var(--radius-sm);font-size:12.5px;color:var(--text-muted);text-align:center}.auth-demo code{font-family:var(--mono);color:var(--text)}.pagination-wrap{padding:14px 20px;border-top:1px solid var(--border)}.pagination-wrap nav{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:13.5px}.pagination-wrap svg{width:16px;height:16px}.checkbox-row{display:flex;align-items:center;gap:8px;font-size:14px}.live-indicator{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--text-muted)}.live-dot{width:7px;height:7px;border-radius:50%;background:var(--success);animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.3}}.message-new{animation:slide-in .3s ease}@keyframes slide-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}@media(max-width:900px){.ticket-layout,.form-row{grid-template-columns:1fr}.message{max-width:100%}.topbar-inner{gap:12px}.topbar-user{display:none}}