:root{--brand:#2563eb;--dark:#1e3a8a;--ink:#0f172a;--muted:#64748b;--line:#e2e8f0;--soft:#f8fafc;--good:#059669;--warn:#d97706;--bad:#dc2626}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--soft)}
a{color:var(--brand);text-decoration:none}
.hidden{display:none!important}
button{font-family:inherit}
.btn{background:var(--brand);color:#fff;border:none;padding:10px 16px;border-radius:9px;font-weight:600;font-size:14px;cursor:pointer}
.btn:hover{filter:brightness(1.05)}
.btn.ghost{background:#fff;color:var(--brand);border:1px solid var(--brand)}
.btn.sm{padding:6px 12px;font-size:13px}
.btn.danger{background:#fff;color:var(--bad);border:1px solid #fecaca}
.btn:disabled{opacity:.5;cursor:not-allowed}
input,select,textarea{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:9px;font-size:14px;font-family:inherit;background:#fff}
label{display:block;font-size:13px;font-weight:600;margin:12px 0 5px;color:var(--ink)}
.muted{color:var(--muted)}
.err{color:var(--bad);font-size:13px;margin-top:8px}
.ok{color:var(--good);font-size:13px;margin-top:8px}

/* Auth */
.auth{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}
.auth .box{background:#fff;border:1px solid var(--line);border-radius:16px;padding:32px;width:100%;max-width:400px;box-shadow:0 10px 40px rgba(15,23,42,.06)}
.auth .logo{font-weight:800;font-size:20px;color:var(--dark);margin-bottom:4px}
.auth h2{margin:0 0 4px;font-size:22px}
.auth .sw{text-align:center;margin-top:16px;font-size:13px;color:var(--muted)}

/* Shell */
.shell{display:flex;min-height:100vh}
.side{width:230px;background:#0f172a;color:#cbd5e1;padding:20px 14px;display:flex;flex-direction:column;flex-shrink:0}
.side .logo{font-weight:800;color:#fff;font-size:18px;padding:6px 10px 18px;display:flex;gap:8px;align-items:center}
.side .logo .dot{width:11px;height:11px;border-radius:3px 3px 3px 0;background:var(--brand)}
.side a{display:block;color:#cbd5e1;padding:10px 12px;border-radius:9px;font-size:14px;margin-bottom:3px;cursor:pointer}
.side a:hover{background:#1e293b}
.side a.active{background:var(--brand);color:#fff}
.side .spacer{flex:1}
.side .who{font-size:12px;color:#94a3b8;padding:10px 12px;border-top:1px solid #1e293b;margin-top:10px}
.main{flex:1;padding:28px 34px;overflow:auto}
.main h1{font-size:24px;margin:0 0 4px}
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}

.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:22px}
.panel{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px}
.stat .n{font-size:28px;font-weight:800;color:var(--brand)}
.stat .l{font-size:13px;color:var(--muted)}
.badge{display:inline-block;font-size:11px;font-weight:700;padding:2px 9px;border-radius:7px;text-transform:uppercase;letter-spacing:.03em}
.b-trial{background:#fef3c7;color:#92400e}.b-active{background:#dcfce7;color:#166534}
.b-pending{background:#e0e7ff;color:#3730a3}.b-expired{background:#fee2e2;color:#991b1b}

table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}
th{font-size:12px;text-transform:uppercase;color:var(--muted);letter-spacing:.03em}

/* Inbox */
.inbox{display:grid;grid-template-columns:300px 1fr;gap:0;height:calc(100vh - 150px);border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff}
.conv-list{border-right:1px solid var(--line);overflow:auto}
.conv-item{padding:12px 14px;border-bottom:1px solid var(--line);cursor:pointer}
.conv-item:hover{background:var(--soft)}.conv-item.active{background:#eff6ff}
.conv-item .nm{font-weight:600;font-size:14px}
.conv-item .pv{font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chat{display:flex;flex-direction:column;height:100%}
.chat-head{padding:12px 16px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}
.msgs{flex:1;overflow:auto;padding:16px;background:var(--soft)}
.msg{max-width:75%;margin:8px 0;padding:9px 13px;border-radius:12px;font-size:14px;line-height:1.4}
.msg.visitor{background:#fff;border:1px solid var(--line);border-bottom-left-radius:4px}
.msg.agent{background:var(--brand);color:#fff;margin-left:auto;border-bottom-right-radius:4px}
.msg.system{background:transparent;color:var(--muted);font-size:12px;text-align:center;max-width:100%;font-style:italic}
.msg .meta{font-size:10px;opacity:.7;margin-top:3px}
.compose{display:flex;gap:8px;padding:12px;border-top:1px solid var(--line)}
.dot-on{width:8px;height:8px;border-radius:50%;background:var(--good);display:inline-block;margin-right:5px}
.dot-off{width:8px;height:8px;border-radius:50%;background:#cbd5e1;display:inline-block;margin-right:5px}

/* Widget builder */
.builder{display:grid;grid-template-columns:1fr 360px;gap:22px}
.preview{background:linear-gradient(135deg,#f1f5f9,#e2e8f0);border:1px solid var(--line);border-radius:14px;height:460px;position:relative;overflow:hidden}
.pv-launcher{position:absolute;bottom:20px;padding:12px 18px;border-radius:30px;color:#fff;font-weight:600;box-shadow:0 6px 20px rgba(0,0,0,.2);font-size:14px}
.pv-window{position:absolute;bottom:20px;width:300px;height:380px;background:#fff;border-radius:14px;box-shadow:0 12px 40px rgba(0,0,0,.2);overflow:hidden;display:flex;flex-direction:column}
.pv-head{padding:16px;color:#fff;font-weight:700}
.pv-body{flex:1;padding:14px;background:var(--soft)}
.pv-greet{background:#fff;border:1px solid var(--line);border-radius:12px;border-bottom-left-radius:4px;padding:10px 12px;font-size:13px;max-width:85%}
.snippet{background:#0f172a;color:#e2e8f0;padding:14px;border-radius:10px;font-family:ui-monospace,monospace;font-size:12px;word-break:break-all;white-space:pre-wrap;position:relative}
/* Language toggle */
.langtoggle{display:flex;gap:4px;justify-content:center;margin-bottom:14px}
.langtoggle.dark{margin:0 0 10px}
.langtoggle button{border:1px solid var(--line);background:#fff;color:var(--muted);border-radius:7px;padding:4px 12px;font-size:12px;font-weight:700;cursor:pointer}
.langtoggle button.on{background:var(--brand);color:#fff;border-color:var(--brand)}
.langtoggle.dark button{background:#1e293b;border-color:#334155;color:#94a3b8}
.langtoggle.dark button.on{background:var(--brand);color:#fff;border-color:var(--brand)}

/* RTL logical fixes */
.msg.agent{margin-inline-start:auto;margin-left:unset}
[dir="rtl"] .msg.agent{border-bottom-right-radius:12px;border-bottom-left-radius:4px}
[dir="rtl"] .msg.visitor{border-bottom-left-radius:12px;border-bottom-right-radius:4px}
.fa-fw{width:1.1em;text-align:center}

@media(max-width:900px){.cards{grid-template-columns:1fr}.builder,.inbox{grid-template-columns:1fr}.side{width:70px}.side .logo span:last-child,.side a span{display:none}}