.visually-hidden{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{font-size:62.5%}body{background:var(--bg);color:var(--text);min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:1.6rem;line-height:1.5}:root{--bg:#0f0f0f;--bg-2:#1a1a1a;--bg-3:#242424;--border:#2e2e2e;--text:#e8e8e8;--text-muted:#888;--accent:#1a6fd4;--accent-hover:#155db8;--accent-light:#90b8f8;--avatar-bg:#2a3f5f;--avatar-border:#3d5a8a;--danger:#e05252;--danger-bg:#2a1515;--success:#4caf80;--warning:#f0a040;--radius:.8rem;--sidebar-w:26rem;--header-h:5.6rem;--input-h:6.4rem;--transition:.15s ease}h1{font-size:2.4rem;font-weight:600}h2{font-size:2rem;font-weight:600}h3{font-size:1.6rem;font-weight:500}p{color:var(--text-muted);font-size:1.4rem}::-webkit-scrollbar{width:.4rem}::-webkit-scrollbar-track{background:0 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1.6rem;display:flex}.sidebar__username{text-overflow:ellipsis;white-space:nowrap;flex:1;font-size:1.4rem;font-weight:500;overflow:hidden}.room-item{cursor:pointer;color:var(--text-muted);transition:background var(--transition), color var(--transition);-webkit-user-select:none;user-select:none;border-radius:0;align-items:center;gap:1rem;padding:.8rem 1.6rem;font-size:1.4rem;display:flex;position:relative}.room-item:hover,.room-item--active{background:var(--bg-3);color:var(--text)}.room-item--active:before{content:"";background:var(--accent);border-radius:0 99px 99px 0;width:.3rem;height:2.4rem;position:absolute;left:0}.room-item__hash{color:var(--text);font-size:1.6rem}.chat{background:var(--bg);flex-direction:column;flex:1;min-width:0;height:100%;display:flex}.chat__header{height:var(--header-h);border-bottom:1px solid var(--border);flex-shrink:0;align-items:center;gap:1rem;padding:0 2rem;display:flex}.chat__room-name{font-size:1.6rem;font-weight:600}.chat__messages{flex-direction:column;flex:1;gap:.2rem;padding:2rem;display:flex;overflow-y:auto}.chat__empty,.chat__no-room{text-align:center;color:var(--text-muted);margin:auto;font-size:1.4rem}.message{border-radius:var(--radius);flex-direction:column;max-width:800px;padding:.4rem 1rem;display:flex}.message--first{background:var(--bg-2);border-left:1px solid var(--accent-light);margin-top:1.6rem;padding-left:.8rem}.message__header{align-items:baseline;gap:.8rem;margin-bottom:.2rem;display:flex}.message__sender{color:var(--accent-light);font-size:1.4rem;font-weight:600}.message__time{color:var(--text-muted);font-size:1.1rem}.message__content{color:var(--text);word-break:break-word;white-space:pre-wrap;font-size:1.5rem;line-height:1.6}.chat__input-area{border-top:1px solid var(--border);flex-shrink:0;padding:1.2rem 2rem}.input-form{background:var(--bg-3);border:1px solid var(--border);border-radius:var(--radius);transition:border-color var(--transition);align-items:center;gap:1rem;padding:0 1.2rem;display:flex}.input-form:focus-within{border-color:var(--accent)}.input-form__field{color:var(--text);resize:none;background:0 0;border:none;outline:none;flex:1;padding:1.2rem 0;font-family:inherit;font-size:1.5rem}.input-form__field::placeholder{color:var(--text-muted)}.input-form__btn{cursor:pointer;color:var(--text-muted);transition:color var(--transition);background:0 0;border:none;align-items:center;padding:.4rem;font-size:2rem;display:flex}.input-form__btn:hover{color:var(--accent)}.avatar{background:var(--avatar-bg);border:1px solid var(--avatar-border);width:3.2rem;height:3.2rem;color:var(--text);text-transform:uppercase;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:1.2rem;font-weight:600;display:flex}.btn{border-radius:var(--radius);cursor:pointer;transition:background var(--transition), color var(--transition), opacity var(--transition);border:none;justify-content:center;align-items:center;gap:.6rem;padding:.8rem 1.6rem;font-family:inherit;font-size:1.4rem;font-weight:500;display:inline-flex}.btn:disabled{opacity:.5;cursor:not-allowed}.btn--primary{background:var(--accent);color:#fff}.btn--primary:hover:not(:disabled){background:var(--accent-hover)}.btn--ghost{color:var(--text-muted);background:0 0}.btn--ghost:hover:not(:disabled){color:var(--text);background:var(--bg-3)}.btn--danger{color:var(--danger);background:0 0}.btn--danger:hover:not(:disabled){background:var(--danger-bg)}.btn--icon{color:var(--text-muted);background:0 0;border-radius:.6rem;padding:.6rem}.btn--icon:hover{color:var(--text);background:var(--bg-3)}.btn--sm{padding:.4rem 1rem;font-size:1.2rem}.btn--full{width:100%}.form{flex-direction:column;gap:1.6rem;display:flex}.form__group{flex-direction:column;gap:.6rem;display:flex}.form__label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;font-size:1.3rem;font-weight:500}.form__input{background:var(--bg-3);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);transition:border-color var(--transition);outline:none;width:100%;padding:1rem 1.2rem;font-family:inherit;font-size:1.5rem}.form__input:focus{border-color:var(--accent)}.form__input::placeholder{color:var(--text-muted)}.form__error{color:var(--danger);margin-top:.2rem;font-size:1.2rem}.auth-page{background:var(--bg);justify-content:center;align-items:center;gap:4rem;min-height:100vh;padding:2rem;display:flex}.auth-card{background:var(--bg-2);border:1px solid var(--border);border-radius:1.2rem;flex-direction:column;flex-shrink:0;gap:2.4rem;width:100%;max-width:40rem;padding:3.2rem;display:flex}.auth-visual{flex:1;max-width:52rem;height:48rem;display:none;overflow:hidden}@media (width>=960px){.auth-visual{display:block}}.auth-card__title{font-size:2.4rem;font-weight:700}.auth-card__sub{color:var(--text-muted);font-size:1.4rem}.auth-card__switch{text-align:center;color:var(--text-muted);font-size:1.3rem}.auth-card__switch button{color:var(--accent-light);cursor:pointer;background:0 0;border:none;padding:0;font-family:inherit;font-size:1.3rem}.modal-overlay{z-index:100;background:#0009;justify-content:center;align-items:center;padding:2rem;display:flex;position:fixed;inset:0}.modal{background:var(--bg-2);border:1px solid var(--border);border-radius:1.2rem;flex-direction:column;gap:2rem;width:100%;max-width:38rem;padding:2.4rem;display:flex}.modal__header{justify-content:space-between;align-items:center;display:flex}.modal__title{font-size:1.8rem;font-weight:600}.toast-container{z-index:200;flex-direction:column;gap:.8rem;display:flex;position:fixed;bottom:2rem;right:2rem}.toast{background:var(--bg-2);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);min-width:24rem;max-width:36rem;padding:1.2rem 1.6rem;font-size:1.4rem;animation:.2s slideIn}.toast--error{border-color:var(--danger)}.toast--info{border-color:var(--accent)}@keyframes slideIn{0%{opacity:0;transform:translateY(1rem)}to{opacity:1;transform:translateY(0)}}.conn-status{color:var(--text-muted);align-items:center;gap:.4rem;margin-left:auto;font-size:1.2rem;display:flex}.conn-status__dot{background:var(--text-muted);border-radius:50%;width:.6rem;height:.6rem}.conn-status--connected .conn-status__dot{background:var(--success)}.conn-status--connecting .conn-status__dot{background:var(--warning)}.conn-status--disconnected .conn-status__dot{background:var(--danger)}.divider{background:var(--border);height:1px;margin:.4rem 0}.sidebar-toggle{color:var(--text);cursor:pointer;background:0 0;border:none;padding:.4rem;font-size:2rem;display:none}@media (width<=768px){.sidebar-toggle{align-items:center;display:flex}.sidebar{z-index:50;position:fixed;top:0;bottom:0;left:0;transform:translate(-100%)}.sidebar--open{transform:translate(0)}.sidebar-overlay{z-index:40;background:#00000080;display:none;position:fixed;inset:0}.sidebar-overlay--visible{display:block}.chat__header{padding:0 1.2rem}.chat__messages{padding:1.2rem}.chat__input-area{padding:.8rem 1.2rem}}