:root{--bg:#f4f5f7;--panel:#ffffff;--border:#e3e6ea;--text:#1b1f24;--muted:#6b7280;--primary:#1877f2;--primary-dark:#145dbf;--green:#16a34a;--amber:#d97706;--red:#dc2626;--shadow:0 1px 3px rgba(0,0,0,0.06)}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:14px;-webkit-font-smoothing:antialiased}a{color:var(--primary);text-decoration:none}button{font:inherit;cursor:pointer;border:none;border-radius:8px;padding:9px 14px;background:var(--primary);color:#fff;transition:background .15s ease}button:hover{background:var(--primary-dark)}button:disabled{opacity:.55;cursor:not-allowed}button.secondary{background:#eef1f5;color:var(--text)}button.secondary:hover{background:#e2e6ec}button.danger{background:var(--red)}input,select,textarea{font:inherit;width:100%;padding:9px 11px;border:1px solid var(--border);border-radius:8px;background:#fff;color:var(--text)}input:focus,select:focus,textarea:focus{outline:2px solid #bcd4fb;border-color:var(--primary)}.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow);padding:18px}.muted{color:var(--muted)}.row,.spread{display:flex;align-items:center;gap:10px}.spread{justify-content:space-between}.stack{display:flex;flex-direction:column;gap:12px}.grid{display:grid;grid-gap:14px;gap:14px}.login-wrap{min-height:100vh;display:grid;place-items:center;padding:20px}.login-card{width:100%;max-width:360px}.login-card h1{margin:0 0 4px;font-size:20px}.shell{display:grid;grid-template-columns:232px 1fr;min-height:100vh}.sidebar{background:#0f1b2d;color:#c7d0db;padding:18px 14px;display:flex;flex-direction:column;gap:4px}.sidebar .brand{color:#fff;font-weight:700;font-size:16px;padding:6px 10px 14px}.sidebar a{color:#c7d0db;padding:9px 12px;border-radius:8px;display:flex;align-items:center;justify-content:space-between;gap:8px}.sidebar a:hover{background:#1b2a40;color:#fff}.sidebar a.active{background:var(--primary);color:#fff}.sidebar .spacer{flex:1 1}.badge{background:var(--red);color:#fff;border-radius:999px;font-size:11px;padding:1px 7px;min-width:18px;text-align:center}.main{padding:22px 26px;max-width:1100px}.page-title{font-size:20px;font-weight:700;margin:0 0 16px}.stats{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:14px;gap:14px}.stat .n{font-size:26px;font-weight:700}.stat .l{color:var(--muted);margin-top:2px}.pill{font-size:11px;font-weight:600;padding:2px 9px;border-radius:999px}.pill.NEW{background:#e0edff;color:#1d4ed8}.pill.PENDING{background:#fef3c7;color:#b45309}.pill.REPLIED{background:#dcfce7;color:#15803d}.pill.CLOSED{background:#eceff3;color:#4b5563}.avatar{width:36px;height:36px;border-radius:50%;object-fit:cover;background:#dde3ea;flex:none}.inbox{display:grid;grid-template-columns:340px 1fr;grid-gap:14px;gap:14px;height:calc(100vh - 90px)}.conv-list{overflow-y:auto;display:flex;flex-direction:column;gap:8px;padding-right:4px}.conv{background:#fff;border:1px solid var(--border);border-radius:10px;padding:11px 12px;cursor:pointer;display:flex;gap:10px;align-items:flex-start}.conv:hover{border-color:#c3cdd9}.conv.active{border-color:var(--primary);box-shadow:0 0 0 1px var(--primary) inset}.conv .name{font-weight:600}.conv .snippet{color:var(--muted);font-size:12.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:220px}.conv .meta-row{margin-top:4px;gap:6px;display:flex;align-items:center;flex-wrap:wrap}.thread{display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);border-radius:12px;overflow:hidden}.thread-head{padding:12px 16px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:10px}.messages{flex:1 1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:8px}.bubble{max-width:70%;padding:9px 12px;border-radius:14px;font-size:13.5px;line-height:1.4}.bubble.INBOUND{align-self:flex-start;background:#eef1f5}.bubble.OUTBOUND{align-self:flex-end;background:var(--primary);color:#fff}.bubble .time{display:block;font-size:10.5px;opacity:.7;margin-top:3px}.composer{border-top:1px solid var(--border);padding:12px;display:flex;gap:8px}.composer textarea{resize:none;height:44px}.filters{display:flex;gap:8px;margin-bottom:12px;flex-wrap:wrap}.filters select{width:auto;min-width:150px}.empty{display:grid;place-items:center;height:100%;color:var(--muted);text-align:center}.toast{position:fixed;right:18px;bottom:18px;background:#0f1b2d;color:#fff;padding:12px 16px;border-radius:10px;box-shadow:0 6px 20px rgba(0,0,0,.25);max-width:320px;z-index:50}