*{box-sizing:border-box;margin:0}body{font-family:system-ui,-apple-system,sans-serif;background:#f2f5f2;color:#16281f;font-size:14px}.dim{color:#6d8271;font-size:12px}.center{display:grid;place-items:center;height:100%}.err{color:#b3261e;margin-top:8px}button{cursor:pointer;border:none;border-radius:8px;background:#0e7a46;color:#fff;padding:8px 16px;font-size:14px}button.link{background:none;color:#0e7a46;padding:0;font-size:12px}input{border:1px solid #d7e3d7;border-radius:8px;padding:9px 12px;font-size:14px;width:100%}.login{max-width:320px;margin:18vh auto;display:grid;gap:16px}.login form{display:grid;gap:10px}.layout{display:grid;grid-template-columns:280px 1fr;height:100vh}aside{border-right:1px solid #d7e3d7;background:#fff;overflow-y:auto}aside header{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;border-bottom:1px solid #d7e3d7;position:sticky;top:0;background:#fff}aside .row{padding:10px 16px;border-bottom:1px solid #eef3ee;cursor:pointer;display:grid;gap:2px}aside .row.on{background:#e2f3e6}aside p{padding:16px}main{display:grid;height:100vh}.chat{display:grid;grid-template-rows:auto 1fr auto;height:100vh}.chat header{display:flex;justify-content:space-between;align-items:center;padding:12px 20px;background:#fff;border-bottom:1px solid #d7e3d7}.toggle{display:flex;gap:6px;align-items:center;font-size:13px;color:#48604f}.msgs{overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:6px;background:#e8e2d8}.bubble{max-width:70%;padding:8px 12px;border-radius:10px;background:#fff;align-self:flex-start;position:relative;font-size:13.5px;line-height:1.45;box-shadow:0 1px 1px #00000012}.bubble.out{background:#d9fdd3;align-self:flex-end}.bubble .who{color:#0e7a46;font-size:11px;font-weight:600}.bubble time{display:block;font-size:10px;color:#6d8271;text-align:right;margin-top:2px}.composer{display:flex;gap:8px;padding:12px 20px;background:#fff;border-top:1px solid #d7e3d7}