:root{--text:#6b6375;--text-h:#08060d;--bg:#fff;--border:#e5e4e7;--code-bg:#f4f3ec;--accent:#aa3bff;--accent-bg:#aa3bff1a;--accent-border:#aa3bff80;--social-bg:#f4f3ec80;--shadow:#0000001a 0 10px 15px -3px, #0000000d 0 4px 6px -2px;--sans:system-ui, "Segoe UI", Roboto, sans-serif;--heading:system-ui, "Segoe UI", Roboto, sans-serif;--mono:ui-monospace, Consolas, monospace;font:18px/145% var(--sans);letter-spacing:.18px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial}}@media (width<=1024px){:root{font-size:16px}}@media 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select:focus{border-color:#667eea}.login-button{background:var(--primary-gradient);color:#fff;cursor:pointer;border:none;border-radius:12px;width:100%;margin-top:10px;padding:14px;font-size:1.1rem;font-weight:700;transition:transform .2s,opacity .2s}.login-button:hover{opacity:.9;transform:translateY(-2px)}.chat-room.read-only{opacity:.85}.chat-input input:disabled{cursor:not-allowed;color:#a0aec0;background-color:#f7fafc}.chat-input button:disabled{cursor:not-allowed;opacity:.7;background:#cbd5e0}.single-chat-view{justify-content:center;align-items:flex-start;min-height:600px;display:flex}.single-chat-view .chat-room{width:100%;max-width:800px;height:650px}.chat-grid{grid-template-rows:repeat(3,500px);grid-template-columns:repeat(2,1fr);gap:25px;display:grid}.chat-room{background:var(--card-bg);border-radius:20px;flex-direction:column;transition:transform .2s;display:flex;overflow:hidden;box-shadow:0 10px 25px #0000001a}.chat-room:hover{transform:translateY(-5px)}.chat-header{background:var(--primary-gradient);color:#fff;justify-content:space-between;align-items:center;padding:15px 20px;display:flex}.chat-header h3{margin:0;font-size:1.25rem}.online-status{background:#fff3;border-radius:20px;padding:4px 12px;font-size:.85rem}.messages-container{background-color:#f8fafc;flex-direction:column;flex:1;gap:15px;padding:20px;display:flex;overflow-y:auto}.message-wrapper{flex-direction:column;max-width:80%;display:flex}.message-wrapper.me{align-self:flex-end;align-items:flex-end}.message-wrapper.other{align-self:flex-start;align-items:flex-start}.message-info{margin-bottom:4px;font-size:.75rem}.sender{color:var(--text-primary);margin-right:8px;font-weight:700}.time{color:var(--text-secondary)}.message-bubble{word-break:break-all;border-radius:15px;padding:10px 16px;font-size:.95rem;line-height:1.4}.me .message-bubble{color:#fff;background:#667eea;border-bottom-right-radius:2px}.other 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