*{box-sizing:border-box;}
:root{
  --brand:#4f46e5; --brand2:#7c3aed; --brand-ink:#eef2ff;
  --ink:#181528; --sub:#6b7280; --muted:#9ca3af;
  --line:#e9e9f1; --bg:#f6f6fb; --surface:#ffffff;
  --red:#e11d48; --red-bg:#fff1f2;
  --green:#16a34a; --green-bg:#f0fdf4;
  --amber:#d97706; --amber-bg:#fffbeb;
  --slate-bg:#f1f1f6;
  --radius:14px; --radius-sm:9px;
  --shadow:0 1px 2px rgba(24,21,40,.05), 0 8px 24px -12px rgba(24,21,40,.12);
}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,sans-serif;background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;}
button{font-family:inherit;}
a{color:var(--brand);}

#app{height:100vh;display:flex;flex-direction:column;}

.topbar{height:58px;flex:0 0 auto;background:var(--surface);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 20px;}
.brand{font-weight:700;font-size:15px;display:flex;align-items:center;gap:9px;letter-spacing:-.01em;}
.brand-mark{width:28px;height:28px;border-radius:9px;background:linear-gradient(135deg,var(--brand),var(--brand2));display:inline-block;}
.who{display:flex;align-items:center;gap:14px;font-size:13px;}
.who .link{color:var(--sub);text-decoration:none;font-weight:500;display:flex;align-items:center;gap:5px;}
.who .link:hover{color:var(--brand);}
.who-avatar{width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:#fff;cursor:pointer;}

button.ghost{background:var(--surface);border:1px solid var(--line);color:var(--sub);padding:7px 13px;border-radius:var(--radius-sm);cursor:pointer;font-size:12.5px;font-weight:600;transition:all .12s ease;}
button.ghost:hover{background:var(--slate-bg);color:var(--ink);border-color:#d8d8e4;}
button.primary{background:linear-gradient(135deg,var(--brand),var(--brand2));border:none;color:#fff;padding:8px 16px;border-radius:var(--radius-sm);cursor:pointer;font-size:12.5px;font-weight:600;box-shadow:0 2px 6px -1px rgba(79,70,229,.4);transition:transform .12s ease,box-shadow .12s ease;}
button.primary:hover{transform:translateY(-1px);box-shadow:0 4px 10px -1px rgba(79,70,229,.5);}
button.primary:disabled{background:#c7c7d6;box-shadow:none;cursor:default;transform:none;}
button.danger{background:var(--red-bg);color:var(--red);border:1px solid #fecdd3;padding:7px 13px;border-radius:var(--radius-sm);cursor:pointer;font-size:12.5px;font-weight:600;}

.body{flex:1;display:flex;min-height:0;}
.sidebar{width:330px;flex:0 0 auto;background:var(--surface);border-right:1px solid var(--line);display:flex;flex-direction:column;}
.tabs{display:flex;gap:4px;padding:10px 10px 0;overflow-x:auto;}
.tabs .tab{padding:8px 12px;border:none;background:none;cursor:pointer;font-size:12.5px;font-weight:600;color:var(--sub);border-radius:var(--radius-sm) var(--radius-sm) 0 0;white-space:nowrap;border-bottom:2px solid transparent;}
.tabs .tab.active{color:var(--brand);border-bottom-color:var(--brand);background:var(--brand-ink);}
.filter-bar{display:flex;flex-direction:column;gap:6px;padding:8px 10px;border-bottom:1px solid var(--line);background:var(--bg);}
.filter-bar select,.filter-bar input[type=date]{width:100%;box-sizing:border-box;padding:6px 8px;border:1px solid var(--line);border-radius:8px;font-size:12px;background:var(--surface);color:var(--ink);}
.filter-bar select:disabled{color:var(--muted);background:var(--slate-bg);}
.filter-dates{display:flex;gap:6px;}
.filter-dates input{flex:1;min-width:0;}
.filter-bar button{align-self:flex-start;font-size:11px;padding:4px 10px;}
.pagination-bar{display:flex;align-items:center;justify-content:center;gap:12px;padding:8px;border-top:1px solid var(--line);font-size:12px;color:var(--sub);}
.pagination-bar button{padding:4px 10px;}
.chat-list{flex:1;overflow-y:auto;padding:6px;}
.chat-item{width:100%;padding:10px 12px;border-radius:var(--radius-sm);cursor:pointer;position:relative;display:flex;align-items:flex-start;gap:10px;margin-bottom:2px;box-sizing:border-box;}
.chat-item:hover{background:var(--slate-bg);}
.chat-item.selected{background:var(--brand-ink);}
.chat-item.pending_takeover::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:3px;background:var(--red);}
.chat-item .avatar{width:34px;height:34px;border-radius:50%;flex:0 0 34px;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:#fff;overflow:hidden;}
.chat-item .avatar img{width:100%;height:100%;border-radius:50%;object-fit:cover;display:block;}
.chat-item .body{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;gap:2px;}
.chat-item .row1{display:flex;align-items:baseline;gap:6px;}
.chat-item .row1 .name{font-size:13px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0;flex:1 1 auto;}
.chat-item .row1 .time{font-weight:400;color:var(--muted);font-size:10.5px;flex:0 0 auto;white-space:nowrap;}
.chat-item .row2{font-size:12px;color:var(--sub);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.chat-item .row3{display:flex;gap:6px;align-items:center;flex-wrap:wrap;}
.badge{display:inline-flex;align-items:center;gap:4px;font-size:10px;font-weight:700;padding:2px 7px;border-radius:20px;letter-spacing:.02em;text-transform:uppercase;flex:0 0 auto;}
.badge::before{content:"";width:5px;height:5px;border-radius:50%;background:currentColor;flex:0 0 auto;}
.badge.bot{background:var(--brand-ink);color:var(--brand);}
.badge.pending_takeover{background:var(--red-bg);color:var(--red);}
.badge.live{background:var(--green-bg);color:var(--green);}
.badge.solved{background:var(--slate-bg);color:var(--muted);}
.owner-chip{font-size:11px;color:var(--sub);font-weight:500;}
.empty-list{padding:40px 20px;text-align:center;color:var(--muted);font-size:13px;}

.chat-panel{flex:1;display:flex;flex-direction:column;min-width:0;}
.empty{margin:auto;color:var(--muted);font-size:13.5px;display:flex;flex-direction:column;align-items:center;gap:10px;}
.empty .icon{width:56px;height:56px;border-radius:50%;background:var(--slate-bg);display:flex;align-items:center;justify-content:center;}
.chat-view{flex:1;display:flex;flex-direction:column;min-height:0;}
.chat-meta{padding:14px 20px;background:var(--surface);border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;}
.meta-visitor{font-weight:700;font-size:14.5px;letter-spacing:-.01em;}
.meta-sub{font-size:12px;color:var(--sub);margin-top:3px;display:flex;gap:6px;flex-wrap:wrap;}
.meta-sub .chip{background:var(--slate-bg);border-radius:20px;padding:2px 9px;}
.meta-actions{display:flex;gap:8px;}

.messages{flex:1;overflow-y:auto;padding:18px 20px;display:flex;flex-direction:column;gap:14px;background:var(--bg);}
.msg-row{display:flex;gap:9px;max-width:70%;align-items:flex-end;}
.msg-row.visitor{align-self:flex-start;}
.msg-row.ai,.msg-row.cs{align-self:flex-end;flex-direction:row-reverse;}
.msg-row img.avatar,.msg-row .avatar{width:28px;height:28px;border-radius:50%;flex:0 0 auto;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;color:#fff;}
.msg{padding:10px 13px;border-radius:15px;font-size:13.3px;line-height:1.45;white-space:pre-wrap;word-break:break-word;box-shadow:0 1px 2px rgba(24,21,40,.04);}
.msg-row.visitor .msg{background:#fff;border:1px solid var(--line);border-bottom-left-radius:4px;}
.msg-row.ai .msg{background:var(--brand-ink);color:#3730a3;border-bottom-right-radius:4px;}
.msg-row.cs .msg{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;border-bottom-right-radius:4px;}
.msg a{color:inherit;}
.msg.system{align-self:center;background:none;box-shadow:none;color:var(--muted);font-size:11.5px;font-style:italic;}
.system-row{align-self:center;color:var(--muted);font-size:11.5px;font-style:italic;text-align:center;}
.who-label{font-size:10.5px;color:var(--muted);margin-bottom:3px;font-weight:600;}

.typing-row{align-self:flex-end;flex-direction:row-reverse;display:flex;gap:9px;align-items:flex-end;}
.typing-bubble{padding:11px 14px;border-radius:15px;background:var(--brand-ink);display:flex;gap:4px;border-bottom-right-radius:4px;}
.typing-bubble span{width:6px;height:6px;border-radius:50%;background:#a5a3e0;display:inline-block;animation:dash-bounce 1.2s infinite;}
.typing-bubble span:nth-child(2){animation-delay:.15s;}.typing-bubble span:nth-child(3){animation-delay:.3s;}
@keyframes dash-bounce{0%,60%,100%{transform:translateY(0);opacity:.5;}30%{transform:translateY(-4px);opacity:1;}}

.send-form{display:flex;gap:10px;padding:14px;border-top:1px solid var(--line);background:var(--surface);align-items:center;}
.send-form input{flex:1;padding:11px 15px;border:1px solid var(--line);background:var(--bg);border-radius:24px;font-size:13.3px;outline:none;}
.send-form input:focus{border-color:var(--brand);background:#fff;}
.send-form input:disabled{color:var(--muted);}
.send-form button{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;border:none;border-radius:50%;width:40px;height:40px;cursor:pointer;flex:0 0 auto;display:flex;align-items:center;justify-content:center;}
.send-form button:disabled{background:#d1d1de;cursor:default;}

/* Auth pages */
.auth-shell{min-height:100vh;display:flex;align-items:center;justify-content:center;background:radial-gradient(circle at 20% 20%,#4338ca,#0f0c29 65%);padding:20px;}
.auth-card{background:var(--surface);padding:36px 32px;border-radius:20px;width:320px;box-shadow:0 30px 60px -20px rgba(0,0,0,.5);}
.auth-mark{width:44px;height:44px;border-radius:13px;background:linear-gradient(135deg,var(--brand),var(--brand2));margin-bottom:16px;}
.auth-card h1{font-size:19px;margin:0 0 4px;letter-spacing:-.02em;}
.auth-card p.sub{margin:0 0 20px;color:var(--sub);font-size:13px;}
.auth-card label{display:block;font-size:11.5px;font-weight:600;color:var(--sub);margin:14px 0 5px;text-transform:uppercase;letter-spacing:.03em;}
.auth-card input{width:100%;box-sizing:border-box;padding:10px 12px;border:1px solid var(--line);border-radius:10px;font-size:14px;outline:none;background:var(--bg);}
.auth-card input:focus{border-color:var(--brand);background:#fff;}
.auth-card button{width:100%;margin-top:22px;padding:11px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;border:none;border-radius:10px;font-size:13.5px;font-weight:600;cursor:pointer;}
.auth-card .error{color:var(--red);font-size:12px;margin-top:12px;min-height:14px;}

/* Simple pages: settings / users */
.page-wrap{max-width:640px;margin:36px auto;padding:0 20px;}
.page-card{background:var(--surface);padding:26px 28px;border-radius:var(--radius);box-shadow:var(--shadow);}
.page-card h1{font-size:17px;margin:0 0 4px;letter-spacing:-.01em;}
.page-card p.hint{margin:0 0 20px;color:var(--sub);font-size:12.5px;}
.back-link{display:inline-flex;align-items:center;gap:5px;margin-bottom:16px;font-size:13px;color:var(--sub);text-decoration:none;font-weight:500;}
.back-link:hover{color:var(--brand);}
.field{margin-bottom:16px;}
.field label{display:block;font-size:11.5px;font-weight:600;color:var(--sub);margin-bottom:5px;text-transform:uppercase;letter-spacing:.03em;}
.field input,.field select{width:100%;box-sizing:border-box;padding:10px 12px;border:1px solid var(--line);border-radius:10px;font-size:13.5px;outline:none;background:var(--bg);}
.field input:focus,.field select:focus{border-color:var(--brand);background:#fff;}
.field .row{display:flex;gap:10px;}
.field-hint{font-size:11.5px;color:var(--muted);margin-top:5px;}
table{width:100%;border-collapse:collapse;margin-top:8px;font-size:13px;}
th{text-align:left;padding:8px;color:var(--sub);font-size:11px;text-transform:uppercase;letter-spacing:.03em;border-bottom:1px solid var(--line);}
td{padding:10px 8px;border-bottom:1px solid var(--line);}
tr:last-child td{border-bottom:none;}
.avatar-sm{width:26px;height:26px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:10.5px;font-weight:700;color:#fff;vertical-align:middle;margin-right:8px;}
.role-pill{font-size:10.5px;font-weight:700;padding:2px 8px;border-radius:20px;text-transform:uppercase;}
.role-pill.superadmin{background:#fef3c7;color:#92400e;}
.role-pill.cs{background:var(--brand-ink);color:var(--brand);}
.status-dot{width:7px;height:7px;border-radius:50%;display:inline-block;margin-right:5px;}
.status-dot.on{background:var(--green);}
.status-dot.off{background:var(--muted);}

/* Overview / reports */
.kpi-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin:18px 0;}
.kpi-tile{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);padding:14px 16px;}
.kpi-tile .num{font-size:24px;font-weight:700;letter-spacing:-.02em;}
.kpi-tile .label{font-size:11.5px;color:var(--sub);margin-top:2px;text-transform:uppercase;letter-spacing:.03em;}
.trend-chart{display:flex;align-items:flex-end;gap:4px;height:100px;margin:14px 0 6px;padding:0 4px;}
.trend-bar{flex:1;background:linear-gradient(180deg,var(--brand),var(--brand2));border-radius:4px 4px 0 0;min-height:2px;position:relative;}
.trend-bar:hover{opacity:.85;}
.trend-labels{display:flex;gap:4px;padding:0 4px;font-size:10px;color:var(--muted);}
.trend-labels span{flex:1;text-align:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.report-toolbar{display:flex;gap:10px;align-items:flex-end;margin-bottom:6px;flex-wrap:wrap;}
.report-toolbar .field{margin-bottom:0;min-width:160px;}

/* Modal */
.modal-backdrop{position:fixed;inset:0;background:rgba(15,12,41,.45);display:flex;align-items:center;justify-content:center;z-index:1000;backdrop-filter:blur(2px);}
.modal{background:var(--surface);border-radius:var(--radius);padding:26px 28px;width:340px;box-shadow:0 30px 60px -20px rgba(0,0,0,.4);}
.modal h2{font-size:16px;margin:0 0 18px;}
.modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:20px;}