:root{--green:#087f6a;--green2:#13a88a;--ink:#17232d;--muted:#72808c;--line:#e6ebee;--soft:#f4f7f8;--white:#fff;--danger:#df5b5b;--shadow:0 12px 32px rgba(24,50,59,.08)}*{box-sizing:border-box}html,body{height:100%;margin:0}body{font-family:Inter,"Segoe UI",sans-serif;color:var(--ink);background:var(--soft)}button,input,textarea{font:inherit}.app{height:100%;display:grid;grid-template-columns:76px 1fr}.rail{background:#102d2c;color:#fff;display:flex;flex-direction:column;align-items:center;padding:18px 10px;gap:25px}.logo{width:42px;height:42px;border-radius:13px;background:linear-gradient(145deg,#23c69e,#07816b);display:grid;place-items:center;font-weight:900;font-size:20px}.rail nav{display:flex;flex-direction:column;gap:9px;width:100%}.rail-btn{border:0;background:transparent;color:#9bb5b1;border-radius:12px;min-height:54px;cursor:pointer;font-size:21px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px}.rail-btn span{font-size:9px}.rail-btn:hover,.rail-btn.active{background:#1e4945;color:#fff}.avatar{margin-top:auto;border:2px solid #6ed8bf;background:#dff7ef;color:#096957;width:40px;height:40px;border-radius:50%;font-weight:800}.workspace,.view{min-width:0;height:100%}.view{display:none}.view.active{display:block}.inbox-layout{height:100%;display:grid;grid-template-columns:330px minmax(400px,1fr) 310px;background:#fff}.conversation-panel,.customer-panel{border-right:1px solid var(--line);min-width:0}.customer-panel{border:0;border-left:1px solid var(--line);padding:22px;overflow:auto}.panel-head,.chat-head{height:78px;display:flex;align-items:center;justify-content:space-between;padding:0 20px;border-bottom:1px solid var(--line)}small{color:var(--green);font-weight:800;letter-spacing:.08em;font-size:10px}h1,h2,p{margin:0}.panel-head h1{font-size:20px;margin-top:4px}.icon-btn{border:1px solid 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