:root{--navy:#073b64;--blue:#0877c9;--red:#e52d40;--bg:#eef3f6;--line:#dce5eb;--muted:#6e7d88}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,sans-serif;background:var(--bg);color:#172a39}button,input,select,textarea{font:inherit}.shell{width:min(1120px,calc(100% - 28px));margin:24px auto;background:#fff;border-radius:24px;overflow:hidden;box-shadow:0 20px 60px #17364b22}.top{background:var(--navy);color:#fff;padding:20px 26px;display:flex;align-items:center;justify-content:space-between}.brand{font-weight:900;font-size:20px}.brand small{display:block;font-size:9px;letter-spacing:.2em;color:#afd2e4}.online{color:#82e5a8;font-size:12px}.panel{padding:28px}.card{max-width:520px;margin:7vh auto;padding:32px;border:1px solid var(--line);border-radius:20px}.card h1{font-size:38px;margin:10px 0}.field{display:grid;gap:7px;margin:16px 0}.field label{font-size:12px;font-weight:800}.field input,.field select,.composer input{border:1px solid var(--line);border-radius:11px;padding:13px;background:#f8fafb}.primary{border:0;border-radius:11px;padding:14px 18px;background:var(--red);color:#fff;font-weight:800}.hidden{display:none!important}.chat-layout{display:grid;grid-template-columns:280px 1fr;min-height:650px}.sidebar{background:#f8fafb;border-right:1px solid var(--line);padding:20px}.tabs{display:grid;grid-template-columns:1fr 1fr;gap:7px}.tabs button,.status-actions button{border:1px solid var(--line);background:#fff;border-radius:9px;padding:9px}.tabs button.active{background:var(--navy);color:#fff}.case-item{width:100%;border:1px solid var(--line);background:#fff;border-radius:11px;padding:12px;text-align:left;margin:7px 0}.case-item b,.case-item small{display:block}.case-item small{color:var(--muted);margin-top:3px}.workspace{display:flex;flex-direction:column;min-width:0}.chat-head{padding:18px 22px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}.messages{flex:1;padding:22px;overflow:auto;background:#f5f8fa}.msg{max-width:72%;padding:11px 13px;border-radius:15px;background:#fff;margin:8px 0}.msg.me{margin-left:auto;background:var(--blue);color:#fff}.msg.system{margin-inline:auto;text-align:center;background:transparent;color:var(--muted);font-size:12px}.composer{display:flex;gap:8px;padding:14px;border-top:1px solid var(--line)}.composer input{flex:1}.call-buttons{display:flex;gap:7px}.call-buttons button{border:0;border-radius:9px;padding:10px;background:var(--blue);color:#fff}.call-buttons button:last-child{background:var(--red)}.status-actions{display:flex;gap:5px;flex-wrap:wrap;margin:12px 0}.call-screen{min-height:100vh;background:#052d4c;color:#fff;display:grid;place-items:center;text-align:center}.video-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:12px;width:min(1000px,94vw)}video{width:100%;border-radius:16px;background:#001}.call-controls{position:fixed;bottom:25px;display:flex;gap:12px}.call-controls button{border:0;border-radius:50px;padding:14px 20px}.danger{background:var(--red);color:#fff}@media(max-width:720px){.shell{width:100%;margin:0;border-radius:0}.chat-layout{grid-template-columns:1fr}.sidebar{max-height:250px;overflow:auto;border-right:0;border-bottom:1px solid var(--line)}.panel{padding:16px}.msg{max-width:88%}}