*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--green: #128C7E;--green-dark: #075E54;--green-light:#25D366;--bg-chat: #ECE5DD;--bubble-out: #DCF8C6;--bubble-in: #FFFFFF;--sidebar-bg: #FFFFFF;--text-main: #111827;--text-muted: #6b7280;--border: #e5e7eb;--radius: 8px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:15px;color:var(--text-main)}html,body,#root{height:100%;overflow:hidden}@supports (-webkit-touch-callout: none){body,#root{height:-webkit-fill-available}}.app{display:flex;height:100vh;height:100dvh;background:var(--bg-chat)}.sidebar{width:360px;min-width:280px;display:flex;flex-direction:column;background:var(--sidebar-bg);border-right:1px solid var(--border);overflow:hidden}.sidebar-header{display:flex;align-items:center;gap:10px;padding:14px 18px;padding-top:max(14px,calc(14px + 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.15s}.back-btn:hover{background:#ffffff26}::-webkit-scrollbar{width:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#c4c4c4;border-radius:3px}@media (max-width: 768px){.app{position:relative;overflow:hidden}.sidebar{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;min-width:unset;z-index:10;transition:transform .25s ease;transform:translate(0)}.main{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;z-index:20;transition:transform .25s ease;transform:translate(100%)}.app.show-chat .sidebar{transform:translate(-100%)}.app.show-chat .main{transform:translate(0)}.back-btn{display:flex}.bubble{max-width:82%}.input-bar{padding:8px 10px}.conv-item{padding:14px}.empty-state{display:none}}