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messageIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.msg-row.mine{flex-direction:row-reverse;margin-left:auto}.msg-avatar{background:var(--av-grad,var(--accent-gradient));color:#fff;border-radius:12px;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;font-size:12px;font-weight:900;display:inline-flex}.msg-avatar.placeholder{visibility:hidden}.msg{gap:3px;min-width:0;display:grid}.msg-sender{color:var(--ink-3);margin-left:4px;font-size:12px;font-weight:800}.msg-body{color:var(--ink);background:#ffffffeb;border:1px solid #ffffffd6;border-radius:8px 22px 22px;padding:10px 14px;box-shadow:0 10px 24px #0f172a14}.msg-row.mine .msg-body{color:#fff;background:var(--accent-gradient);border-color:#0000;border-radius:22px 8px 22px 22px;box-shadow:0 12px 28px #2563eb38}.msg-body-text{white-space:pre-wrap;overflow-wrap:anywhere;font-size:15px;line-height:1.45}.msg-ts{color:var(--ink-3);text-align:right;padding:0 5px;font-size:10px;font-weight:800}.msg-row:not(.mine) .msg-ts{text-align:left}.msg-row.mine .msg-ts{color:#ffffffc7}.msg-image{object-fit:cover;border-radius:20px;max-width:260px;max-height:320px;display:block}.msg-file-link{border-radius:var(--pill);color:var(--accent);background:var(--accent-soft);align-items:center;gap:7px;padding:8px 12px;font-weight:900;text-decoration:none;display:inline-flex}.typing-indicator{color:var(--ink-3);align-items:center;gap:8px;padding:4px 20px 8px;font-size:12px;font-weight:800;display:flex}.typing-dots{gap:3px;display:inline-flex}.typing-dots span{border-radius:var(--pill);background:var(--accent);width:5px;height:5px;animation:1s infinite typingDot}.typing-dots span:nth-child(2){animation-delay:.12s}.typing-dots span:nth-child(3){animation-delay:.24s}@keyframes typingDot{0%,70%,to{opacity:.4;transform:translateY(0)}35%{opacity:1;transform:translateY(-4px)}}.composer{padding:12px 18px calc(12px + var(--safe-bottom));-webkit-backdrop-filter:blur(20px)saturate(150%);background:#ffffffc7;border-top:1px solid #0f172a14;align-items:flex-end;gap:10px;display:flex}.file-input-hidden{display:none}.composer-textarea{resize:none;border-radius:24px;min-height:48px;max-height:128px;padding:13px 16px;line-height:1.4}.send-btn{background:var(--accent-gradient);color:#fff;width:48px;height:48px;box-shadow:var(--shadow-pop);border-radius:17px}.send-btn:disabled,.attach-btn:disabled{opacity:.38;cursor:default;box-shadow:none}.empty-state,.invite-card{text-align:center;color:var(--ink-3);place-items:center;gap:14px;padding:36px;display:grid}.empty-icon{width:78px;height:78px;color:var(--accent);background:var(--accent-soft);border-radius:28px;place-items:center;display:grid}.invite-actions{gap:10px;margin-top:8px;display:flex}@media (width<=900px){.login{padding:18px}.login:before{display:none}.login-card{max-width:480px}.layout{isolation:isolate;position:relative}.topbar{z-index:50;position:relative}.topbar-chat{display:none}.sidebar{z-index:20;width:100%;min-width:100%;transition:transform var(--t-slow);position:absolute;inset:0;transform:translate(0)}.sidebar.mobile-hidden{transform:translate(-105%)}.chat{z-index:10;transition:transform var(--t-slow);position:absolute;inset:0;transform:translate(0)}.chat.mobile-hidden{pointer-events:none;transform:translate(105%)}.chat-back-btn{display:inline-flex}.room-delete-btn,.chat-delete-btn{opacity:1}}@media (width<=520px){body{background:var(--bg)}.login{align-items:stretch;padding:0}.login-card{max-width:none;min-height:100dvh;box-shadow:none;padding:calc(28px + var(--safe-top)) 20px calc(24px + 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