:root{--bg:#0f1117;--bg-card:#1a1d27;--bg-hover:#242736;--bg-input:#242736;--border:#2e3142;--text:#e4e5e9;--text-muted:#8b8d9a;--accent:#6366f1;--accent-hover:#818cf8;--green:#22c55e;--red:#ef4444;--orange:#f59e0b;--blue:#3b82f6;--radius:8px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-hover)}.app-layout{display:flex;min-height:100vh}.sidebar{width:240px;background:var(--bg-card);border-right:1px solid var(--border);padding:20px 0;position:fixed;top:0;left:0;height:100vh;overflow-y:auto;z-index:100}.sidebar-logo{padding:0 20px 20px;border-bottom:1px solid var(--border);margin-bottom:12px;font-size:18px;font-weight:700;color:var(--accent)}.sidebar-nav a{display:flex;align-items:center;gap:10px;padding:10px 20px;color:var(--text-muted);font-size:14px;transition:all .15s}.sidebar-nav a.active,.sidebar-nav a:hover{background:var(--bg-hover);color:var(--text)}.sidebar-nav a.active{border-left:3px solid var(--accent);color:var(--accent)}.main-content{margin-left:240px;flex:1 1;padding:24px 32px;min-height:100vh}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.page-header h1{font-size:24px;font-weight:700}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.kpi-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));grid-gap:16px;gap:16px;margin-bottom:24px}.kpi-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.kpi-card .label{font-size:13px;color:var(--text-muted);margin-bottom:4px}.kpi-card .value{font-size:28px;font-weight:700}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:14px}th{text-align:left;color:var(--text-muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.5px}td,th{padding:10px 12px;border-bottom:1px solid var(--border);white-space:nowrap}tr:hover td{background:var(--bg-hover)}.badge{display:inline-block;padding:2px 8px;border-radius:4px;font-size:12px;font-weight:600}.badge-green{background:rgba(34,197,94,.15);color:var(--green)}.badge-red{background:rgba(239,68,68,.15);color:var(--red)}.badge-orange{background:rgba(245,158,11,.15);color:var(--orange)}.badge-blue{background:rgba(59,130,246,.15);color:var(--blue)}.badge-gray{background:rgba(139,141,154,.15);color:var(--text-muted)}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border:none;border-radius:var(--radius);font-size:14px;font-weight:500;cursor:pointer;transition:all .15s}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover:not(:disabled){background:var(--accent-hover)}.btn-green{background:rgba(34,197,94,.15);color:var(--green)}.btn-green:hover:not(:disabled){background:rgba(34,197,94,.25)}.btn-red{background:rgba(239,68,68,.15);color:var(--red)}.btn-red:hover:not(:disabled){background:rgba(239,68,68,.25)}.btn-sm{padding:4px 10px;font-size:13px}input,select,textarea{background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);padding:8px 12px;font-size:14px;width:100%}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent)}.input-group{display:flex;gap:12px;margin-bottom:16px}.input-group input,.input-group select{flex:1 1}label{display:block;font-size:13px;color:var(--text-muted);margin-bottom:4px}.filters{display:flex;gap:12px;margin-bottom:16px;flex-wrap:wrap;align-items:center}.filters input,.filters select{width:auto;min-width:160px}.message-list{display:flex;flex-direction:column;gap:12px;max-height:400px;overflow-y:auto;padding:12px}.message{padding:10px 14px;border-radius:12px;max-width:70%;font-size:14px}.message-user{align-self:flex-end;background:var(--bg-hover)}.message-support{align-self:flex-start;background:rgba(99,102,241,.15)}.message-meta{font-size:11px;color:var(--text-muted);margin-top:4px}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);grid-gap:16px;gap:16px}.form-group{display:flex;flex-direction:column}.form-group.full{grid-column:1/-1}.login-container{display:flex;align-items:center;justify-content:center;min-height:100vh}.login-card{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:40px;width:100%;max-width:400px}.login-card h1{text-align:center;margin-bottom:8px;font-size:22px}.login-card .subtitle{text-align:center;color:var(--text-muted);font-size:14px;margin-bottom:28px}.login-card .form-group{margin-bottom:16px}.login-card .btn{width:100%;justify-content:center;padding:12px;font-size:15px}.error-msg{color:var(--red);font-size:14px;margin-bottom:12px;text-align:center}.mt-4{margin-top:16px}.mb-4{margin-bottom:16px}.gap-2{gap:8px}.flex{display:flex}.items-center{align-items:center}.justify-between{justify-content:space-between}.text-muted{color:var(--text-muted)}.text-sm{font-size:13px}.font-mono{font-family:monospace}.loading{display:flex;align-items:center;justify-content:center;padding:60px;color:var(--text-muted)}