@import url('https://fonts.googleapis.com/css2?family=Hind+Siliguri:wght@400;500;600;700&display=swap');
:root{--bg:#f4f7fb;--surface:#fff;--surface2:#f8fafc;--text:#172033;--muted:#667085;--line:#e4e9f1;--primary:#2563eb;--primary2:#4f46e5;--success:#12b76a;--warning:#f79009;--danger:#ef4444;--shadow:0 18px 50px rgba(26,39,72,.09);--sidebar:#101828;--sidebarText:#d0d5dd;--input:#fff}
html[data-theme="dark"]{--bg:#0b1120;--surface:#111827;--surface2:#172033;--text:#f3f4f6;--muted:#98a2b3;--line:#263247;--primary:#60a5fa;--primary2:#818cf8;--shadow:0 18px 50px rgba(0,0,0,.28);--sidebar:#070c16;--sidebarText:#cbd5e1;--input:#0d1525}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:"Hind Siliguri","Noto Sans Bengali",system-ui,sans-serif;font-size:15px}.hidden{display:none!important}a{text-decoration:none;color:inherit}button,input,textarea,select{font:inherit}button{cursor:pointer}.login-page{min-height:100vh;display:grid;grid-template-columns:1.05fr .95fr;background:var(--bg)}.login-hero{padding:70px;display:flex;flex-direction:column;justify-content:center;background:linear-gradient(145deg,#101828,#1d2939);color:white;position:relative;overflow:hidden}.login-hero:after{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:#2563eb42;right:-170px;top:-150px}.hero-mark{width:62px;height:62px;border-radius:20px;background:linear-gradient(135deg,#25d366,#128c7e);display:grid;place-items:center;font-size:30px;box-shadow:0 18px 40px #0004}.login-hero h1{font-size:44px;line-height:1.15;margin:28px 0 14px;max-width:620px}.login-hero p{color:#cbd5e1;font-size:18px;max-width:580px}.hero-list{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:32px;max-width:620px}.hero-item{padding:15px;border:1px solid #ffffff20;border-radius:16px;background:#ffffff0b}.login-side{display:grid;place-items:center;padding:32px}.login-card{width:min(430px,100%);background:var(--surface);border:1px solid var(--line);border-radius:25px;padding:32px;box-shadow:var(--shadow)}.login-card h2{font-size:28px;margin:0 0 7px}.error-box{background:#fef2f2;color:#b42318;border:1px solid #fecaca;border-radius:12px;padding:11px 13px;margin:15px 0}.field{margin-bottom:16px}.field label{display:block;font-weight:600;margin-bottom:7px}.field small,.muted{color:var(--muted)}input,textarea,select{width:100%;border:1px solid var(--line);border-radius:12px;background:var(--input);color:var(--text);padding:12px 13px;outline:none;transition:.18s}input:focus,textarea:focus,select:focus{border-color:var(--primary);box-shadow:0 0 0 3px color-mix(in srgb,var(--primary) 16%,transparent)}textarea{min-height:105px;resize:vertical}.btn{border:0;border-radius:12px;padding:11px 16px;font-weight:600;background:linear-gradient(135deg,var(--primary),var(--primary2));color:white;display:inline-flex;align-items:center;justify-content:center;gap:7px}.btn.block{width:100%}.btn.secondary{background:var(--surface2);color:var(--text);border:1px solid var(--line)}.btn.danger{background:#dc2626}.btn.success{background:#079455}.btn.small{padding:8px 11px;font-size:13px}.theme-fab{position:fixed;right:20px;top:20px;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--text);z-index:80}.app-shell{min-height:100vh}.sidebar{position:fixed;left:0;top:0;bottom:0;width:260px;background:var(--sidebar);color:var(--sidebarText);padding:20px 14px;z-index:50;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:11px;padding:7px 8px 22px}.brand-logo{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,#25d366,#128c7e);color:white;font-size:22px}.brand b{display:block;color:white;font-size:17px}.brand span{font-size:12px;color:#98a2b3}.nav{display:flex;flex-direction:column;gap:5px}.nav-link{border:0;background:transparent;color:var(--sidebarText);padding:11px 12px;border-radius:11px;text-align:left;display:flex;gap:11px;align-items:center}.nav-link:hover,.nav-link.active{background:#ffffff12;color:white}.nav-link .icon{width:22px;text-align:center}.sidebar-bottom{margin-top:auto;border-top:1px solid #ffffff14;padding-top:14px}.main{margin-left:260px;min-height:100vh}.topbar{height:72px;padding:0 28px;background:var(--surface);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:30}.top-title b{display:block;font-size:19px}.top-title span{color:var(--muted);font-size:13px}.top-actions{display:flex;gap:9px;align-items:center}.icon-btn{width:40px;height:40px;border:1px solid var(--line);border-radius:11px;background:var(--surface2);color:var(--text)}.menu-btn{display:none}.content{padding:26px;max-width:1500px;margin:auto}.page-section{display:none}.page-section.active{display:block}.page-head{display:flex;justify-content:space-between;gap:15px;align-items:flex-start;margin-bottom:22px}.page-head h1{margin:0;font-size:27px}.page-head p{margin:5px 0 0;color:var(--muted)}.grid{display:grid;gap:18px}.stats-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.stat-card,.card{background:var(--surface);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}.stat-card{padding:19px}.stat-top{display:flex;justify-content:space-between}.stat-icon{width:44px;height:44px;border-radius:13px;display:grid;place-items:center;background:color-mix(in srgb,var(--primary) 12%,var(--surface2));color:var(--primary);font-size:20px}.stat-value{font-size:27px;font-weight:700;margin-top:17px}.stat-label{color:var(--muted)}.card{padding:20px}.card-head{display:flex;justify-content:space-between;gap:13px;align-items:flex-start;margin-bottom:17px}.card-head h3{margin:0;font-size:19px}.card-head p{margin:4px 0 0;color:var(--muted)}.status-badge{display:inline-flex;align-items:center;gap:7px;border-radius:999px;padding:7px 11px;background:var(--surface2);border:1px solid var(--line);font-size:13px}.status-dot{width:8px;height:8px;border-radius:50%;background:var(--muted)}.status-badge.connected .status-dot{background:var(--success);box-shadow:0 0 0 4px color-mix(in srgb,var(--success) 17%,transparent)}.status-badge.waiting_qr .status-dot{background:var(--warning)}.status-badge.connecting .status-dot{background:var(--primary)}.two-col{grid-template-columns:minmax(0,1.15fr) minmax(330px,.85fr)}.action-row{display:flex;gap:10px;flex-wrap:wrap}.info-list{display:grid;gap:10px}.info-row{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px solid var(--line)}.info-row:last-child{border-bottom:0}.info-row span{color:var(--muted)}.link-layout{grid-template-columns:minmax(350px,.9fr) minmax(0,1.1fr)}.qr-wrap{min-height:420px;display:grid;place-items:center;text-align:center;background:linear-gradient(145deg,var(--surface2),var(--surface));border:1px dashed var(--line);border-radius:18px;padding:24px}.qr-image{width:290px;max-width:100%;border-radius:16px;background:white;padding:12px;box-shadow:0 16px 35px #0002}.qr-placeholder{max-width:340px}.qr-placeholder .big-icon{font-size:54px}.steps{display:grid;gap:13px}.step{display:flex;gap:13px;padding:14px;border:1px solid var(--line);border-radius:15px;background:var(--surface2)}.step-no{width:34px;height:34px;min-width:34px;border-radius:50%;display:grid;place-items:center;background:var(--primary);color:white;font-weight:700}.step b{display:block;margin-bottom:3px}.notice{border-left:4px solid var(--primary);background:color-mix(in srgb,var(--primary) 8%,var(--surface));padding:13px 15px;border-radius:10px}.notice.warning{border-color:var(--warning)}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.full{grid-column:1/-1}.code{font-family:ui-monospace,SFMono-Regular,monospace;background:#0f172a;color:#dbeafe;border-radius:14px;padding:15px;overflow:auto;white-space:pre-wrap;word-break:break-word;font-size:13px}.docs-block{margin-bottom:18px}.docs-block h3{margin-bottom:8px}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:14px}table{width:100%;border-collapse:collapse;min-width:880px}th,td{padding:12px 13px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}th{background:var(--surface2);font-size:13px;color:var(--muted);font-weight:600}tr:last-child td{border-bottom:0}.badge{display:inline-flex;padding:5px 9px;border-radius:999px;font-size:12px;background:var(--surface2);border:1px solid var(--line)}.badge.green{color:#067647;background:#ecfdf3;border-color:#abefc6}.badge.red{color:#b42318;background:#fef3f2;border-color:#fecdca}.badge.blue{color:#175cd3;background:#eff8ff;border-color:#b2ddff}.toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.toolbar input,.toolbar select{width:auto;min-width:170px}.modal{position:fixed;inset:0;background:#101828b8;display:none;place-items:center;padding:18px;z-index:100}.modal.show{display:grid}.dialog{width:min(760px,100%);max-height:94vh;overflow:auto;background:var(--surface);border-radius:22px;border:1px solid var(--line);box-shadow:0 30px 80px #0005;padding:22px}.modal-head{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:18px}.modal-head h3{margin:0}.close-btn{border:0;background:var(--surface2);color:var(--text);width:38px;height:38px;border-radius:10px}.input-group{display:flex;gap:8px}.input-group input{flex:1}.toast{position:fixed;right:22px;bottom:22px;padding:13px 17px;border-radius:13px;background:#101828;color:white;z-index:150;display:none;box-shadow:0 15px 35px #0004}.monitor-list{display:grid;gap:9px;max-height:640px;overflow:auto}.log-item{border:1px solid var(--line);background:var(--surface2);border-radius:14px;padding:13px;display:grid;grid-template-columns:140px 110px 1fr auto;gap:12px;align-items:start}.log-message{word-break:break-word}.direction{font-size:12px;font-weight:600}.direction.incoming{color:#067647}.direction.outgoing{color:#175cd3}.direction.system{color:#b54708}.empty{text-align:center;padding:42px;color:var(--muted)}.live-dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--success);animation:pulse 1.6s infinite}@keyframes pulse{50%{box-shadow:0 0 0 7px transparent}0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--success) 35%,transparent)}}
@media(max-width:1050px){.stats-grid{grid-template-columns:repeat(2,1fr)}.two-col,.link-layout{grid-template-columns:1fr}.sidebar{transform:translateX(-100%);transition:.2s}.sidebar.open{transform:translateX(0)}.main{margin-left:0}.menu-btn{display:inline-grid;place-items:center}.topbar{padding:0 16px}.content{padding:18px}.login-page{grid-template-columns:1fr}.login-hero{display:none}.log-item{grid-template-columns:110px 90px 1fr}}
@media(max-width:650px){.stats-grid,.form-grid{grid-template-columns:1fr}.full{grid-column:auto}.content{padding:13px}.page-head{flex-direction:column}.top-title span{display:none}.qr-wrap{min-height:350px}.qr-image{width:245px}.login-side{padding:18px}.login-card{padding:24px}.log-item{grid-template-columns:1fr;gap:4px}.toolbar input,.toolbar select{width:100%}.action-row .btn{flex:1}.hero-list{grid-template-columns:1fr}}