:root{--primary-color:#6366f1;--primary-hover:#4f46e5;--bg-color:#0f172a;--surface-color:#1e293b;--text-main:#f8fafc;--text-muted:#94a3b8;--border-color:#334155;--accent-color:#10b981;--font-family:"Inter", system-ui, -apple-system, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--bg-color);color:var(--text-main);flex-direction:column;min-height:100vh;display:flex}#root{flex:1;width:100%;display:flex}.app-container{flex:1;width:100%;height:100vh;display:flex}.glass-panel{-webkit-backdrop-filter:blur(12px);background:#1e293bb3;border:1px solid #ffffff1a;border-radius:16px;box-shadow:0 8px 32px #0000005e}.form-container{flex-direction:column;gap:1.5rem;width:100%;max-width:400px;margin:auto;padding:2rem;display:flex}.form-title{text-align:center;margin-bottom:1rem;font-size:2rem;font-weight:700}.input-group{flex-direction:column;gap:.5rem;display:flex}.input-group label{color:var(--text-muted);font-size:.875rem}.input-field{border:1px solid var(--border-color);color:var(--text-main);background:#0f172a99;border-radius:8px;padding:.75rem 1rem;font-size:1rem;transition:all .2s}.input-field:focus{border-color:var(--primary-color);outline:none;box-shadow:0 0 0 2px #6366f133}.btn{cursor:pointer;border:none;border-radius:8px;padding:.75rem 1.5rem;font-size:1rem;font-weight:600;transition:all .2s}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-primary:hover{background-color:var(--primary-hover);transform:translateY(-1px)}.btn-secondary{color:var(--primary-color);border:1px solid var(--primary-color);background-color:#0000}.btn-secondary:hover{background-color:#6366f11a}.chat-layout{width:100%;height:100%;display:flex}.sidebar{border-right:1px solid var(--border-color);background-color:var(--surface-color);flex-direction:column;width:300px;display:flex}.sidebar-header{border-bottom:1px solid var(--border-color);padding:1.5rem}.user-list{flex:1;overflow-y:auto}.user-item{cursor:pointer;border-bottom:1px solid #ffffff0d;align-items:center;gap:1rem;padding:1rem 1.5rem;transition:background .2s;display:flex}.user-item:hover{background-color:#ffffff0d}.user-item.active{border-left:3px solid var(--primary-color);background-color:#6366f11a}.chat-area{background-color:var(--bg-color);flex-direction:column;flex:1;display:flex}.chat-header{background-color:var(--surface-color);border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;padding:1rem 1.5rem;display:flex}.message-list{flex-direction:column;flex:1;gap:1rem;padding:1.5rem;display:flex;overflow-y:auto}.message{word-break:break-word;border-radius:12px;max-width:70%;padding:.75rem 1rem;position:relative}.message.sent{background-color:var(--primary-color);color:#fff;border-bottom-right-radius:4px;align-self:flex-end}.message.received{background-color:var(--surface-color);color:var(--text-main);border-bottom-left-radius:4px;align-self:flex-start}.chat-input-area{background-color:var(--surface-color);border-top:1px solid var(--border-color);align-items:center;gap:1rem;padding:1rem 1.5rem;display:flex}.chat-input-area input{background:var(--bg-color);border:1px solid var(--border-color);color:var(--text-main);border-radius:24px;flex:1;padding:.75rem 1.5rem}.chat-input-area input:focus{border-color:var(--primary-color);outline:none}.icon-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;padding:.5rem;transition:all .2s;display:flex}.icon-btn:hover{color:var(--primary-color);background-color:#6366f11a}.mode-card{text-align:center;cursor:pointer;padding:3rem 2rem;transition:all .3s}.mode-card:hover{border-color:var(--primary-color);transform:translateY(-5px)}