:root{--green: #2e7d32;--green-dark: #1b5e20;--green-soft: #e8f5e9;--black: #141414;--white: #ffffff;--gray-100: #f5f5f5;--gray-200: #e0e0e0;--gray-600: #616161;--red: #c62828;--amber: #ef6c00;--blue: #1565c0}*{box-sizing:border-box}body{margin:0;font-family:Hind Siliguri,Noto Sans Bengali,system-ui,sans-serif;color:var(--black);background:var(--gray-100)}a{color:var(--green-dark)}button{font-family:inherit;cursor:pointer}input,select,textarea{font-family:inherit;font-size:14px;padding:8px 10px;border:1px solid var(--gray-200);border-radius:8px}.btn{background:var(--green);color:#fff;border:none;border-radius:8px;padding:9px 18px;font-size:14px;font-weight:600}.btn:hover{background:var(--green-dark)}.btn-ghost{background:#fff;color:var(--black);border:1px solid var(--gray-200);border-radius:8px;padding:8px 16px;font-size:14px}.btn-danger{background:var(--red);color:#fff;border:none;border-radius:8px;padding:8px 16px}.card{background:#fff;border-radius:12px;padding:16px;box-shadow:0 1px 3px #00000014}.chip{display:inline-block;font-size:12px;padding:3px 10px;border-radius:20px;font-weight:600}.chip-green{background:var(--green-soft);color:var(--green-dark)}.chip-amber{background:#fff3e0;color:var(--amber)}.chip-red{background:#ffebee;color:var(--red)}.chip-blue{background:#e3f2fd;color:var(--blue)}.chip-gray{background:var(--gray-100);color:var(--gray-600)}.layout{display:flex;min-height:100vh}.sidebar{width:220px;background:var(--green-dark);color:#fff;padding:20px 12px;position:sticky;top:0;height:100vh}.sidebar h2{font-size:18px;margin:0 0 4px 12px}.sidebar .sub{font-size:12px;opacity:.7;margin:0 0 20px 12px}.sidebar nav a{display:block;color:#fff;text-decoration:none;padding:10px 12px;border-radius:8px;font-size:14px;opacity:.85}.sidebar nav a:hover,.sidebar nav a.active{background:#ffffff26;opacity:1}.main{flex:1;padding:24px;max-width:1200px}.page-title{font-size:22px;margin:0 0 16px}.grid{display:grid;gap:16px}.grid-4{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}.grid-2{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}.kpi .num{font-size:26px;font-weight:700}.kpi .label{font-size:13px;color:var(--gray-600)}table.tbl{width:100%;border-collapse:collapse;background:#fff;border-radius:12px;overflow:hidden;font-size:14px}.tbl th,.tbl td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--gray-100)}.tbl th{background:var(--green-soft);color:var(--green-dark);font-weight:600}.tbl tr:hover td{background:#fafafa}.inbox-wrap{display:flex;gap:16px;height:calc(100vh - 120px)}.conv-list{width:300px;background:#fff;border-radius:12px;overflow-y:auto}.conv-item{padding:12px;border-bottom:1px solid var(--gray-100);cursor:pointer}.conv-item:hover,.conv-item.active{background:var(--green-soft)}.chat-pane{flex:1;background:#fff;border-radius:12px;display:flex;flex-direction:column}.chat-msgs{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:8px}.msg{max-width:70%;padding:8px 12px;border-radius:12px;font-size:14px}.msg-in{background:var(--gray-100);align-self:flex-start}.msg-out{background:var(--green);color:#fff;align-self:flex-end}.msg-ai{background:var(--green-soft);align-self:flex-end;border:1px dashed var(--green)}.chat-input{display:flex;gap:8px;padding:12px;border-top:1px solid var(--gray-100)}.chat-input input{flex:1}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--green-dark)}.login-card{background:#fff;border-radius:16px;padding:32px;width:360px}.login-card h1{color:var(--green-dark);margin:0 0 4px}.login-card p{color:var(--gray-600);font-size:13px;margin:0 0 20px}.login-card input{width:100%;margin-bottom:12px}.login-card .btn{width:100%}.err{color:var(--red);font-size:13px;margin-top:8px}.empty{text-align:center;color:var(--gray-600);padding:40px 20px}@media(max-width:768px){.sidebar{width:100%;height:auto;position:static}.layout{flex-direction:column}.inbox-wrap{flex-direction:column;height:auto}.conv-list{width:100%;max-height:300px}}