:root{--wb-bg: #0b141a;--wb-panel: #111b21;--wb-panel-2: #202c33;--wb-panel-3: #2a3942;--wb-border: #233138;--wb-text: #e9edef;--wb-text-muted: #8696a0;--wb-accent: #00a884;--wb-accent-2: #06cf9c;--wb-bubble-out: #005c4b;--wb-bubble-in: #202c33;--wb-danger: #f15c6d;--wb-warn: #ffb648}*{box-sizing:border-box}html,body,#root{height:100%;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--wb-bg);color:var(--wb-text);-webkit-font-smoothing:antialiased}button{font-family:inherit;cursor:pointer}input,textarea{font-family:inherit}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-thumb{background:var(--wb-panel-3);border-radius:4px}::-webkit-scrollbar-track{background:transparent}.app-shell{display:grid;grid-template-columns:minmax(280px,380px) 1fr;height:100vh;background:var(--wb-bg)}@media(max-width:768px){.app-shell{grid-template-columns:1fr}.app-shell.show-chat .sidebar{display:none}.app-shell:not(.show-chat) .chat-area{display:none}}.sidebar{background:var(--wb-panel);border-right:1px solid var(--wb-border);display:flex;flex-direction:column;min-width:0}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:var(--wb-panel-2);border-bottom:1px solid var(--wb-border)}.sidebar-header .me{display:flex;align-items:center;gap:10px;min-width:0}.avatar{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,var(--wb-accent) 0%,var(--wb-accent-2) 100%);color:#04231d;font-weight:600;display:flex;align-items:center;justify-content:center;flex-shrink:0}.icon-btn{background:transparent;border:0;color:var(--wb-text-muted);width:36px;height:36px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;transition:background .12s ease}.icon-btn:hover{background:var(--wb-panel-3);color:var(--wb-text)}.search-row{padding:8px 12px;background:var(--wb-panel)}.search-input{width:100%;background:var(--wb-panel-2);border:0;color:var(--wb-text);padding:9px 14px 9px 38px;border-radius:8px;font-size:14px;outline:none}.search-wrap{position:relative}.search-wrap svg.search-icon{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--wb-text-muted)}.conv-list{flex:1;overflow-y:auto}.conv-item{display:flex;gap:12px;padding:12px 16px;cursor:pointer;border-bottom:1px solid var(--wb-border);align-items:center;transition:background .12s ease}.conv-item:hover{background:var(--wb-panel-2)}.conv-item.active{background:var(--wb-panel-3)}.conv-meta{flex:1;min-width:0}.conv-name{font-weight:500;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conv-sub{color:var(--wb-text-muted);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:flex;gap:6px;align-items:center}.chat-area{display:flex;flex-direction:column;min-width:0;background-color:var(--wb-bg);background-image:radial-gradient(circle at 20% 20%,rgba(0,168,132,.06) 0,transparent 40%),radial-gradient(circle at 80% 60%,rgba(0,168,132,.04) 0,transparent 40%)}.chat-empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:32px;color:var(--wb-text-muted)}.chat-empty h2{margin:16px 0 8px;color:var(--wb-text);font-weight:300;font-size:28px}.chat-empty p{max-width:420px;line-height:1.5}.chat-header{display:flex;align-items:center;gap:12px;padding:10px 16px;background:var(--wb-panel-2);border-bottom:1px solid var(--wb-border)}.chat-header .info{flex:1;min-width:0}.chat-header .name{font-weight:500;font-size:16px}.chat-header .sub{font-size:12px;color:var(--wb-text-muted);display:flex;align-items:center;gap:4px}.messages{flex:1;overflow-y:auto;padding:16px 8%;display:flex;flex-direction:column;gap:4px}.bubble-row{display:flex}.bubble-row.out{justify-content:flex-end}.bubble-row.in{justify-content:flex-start}.bubble{max-width:min(70%,560px);padding:6px 10px 8px;border-radius:8px;position:relative;box-shadow:0 1px .5px #0b141a21;white-space:pre-wrap;word-wrap:break-word;line-height:1.4;font-size:14.2px}.bubble.out{background:var(--wb-bubble-out);border-top-right-radius:0}.bubble.in{background:var(--wb-bubble-in);border-top-left-radius:0}.bubble.failed{background:#f15c6d2e;border:1px solid rgba(241,92,109,.5)}.bubble-meta{display:flex;align-items:center;justify-content:flex-end;gap:4px;font-size:11px;color:var(--wb-text-muted);margin-top:4px}.composer{background:var(--wb-panel-2);display:flex;gap:10px;padding:10px 16px;align-items:flex-end;border-top:1px solid var(--wb-border)}.composer textarea{flex:1;background:var(--wb-panel-3);color:var(--wb-text);border:0;border-radius:8px;padding:10px 14px;resize:none;outline:none;font-size:14.5px;max-height:160px;min-height:42px;line-height:1.4}.composer button.send{background:var(--wb-accent);color:#04231d;border:0;width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:18px;transition:transform .12s ease,background .12s ease}.composer button.send:hover{background:var(--wb-accent-2)}.composer button.send:disabled{opacity:.4;cursor:not-allowed}.encryption-banner{margin:14px auto;padding:10px 14px;background:#ffb64814;color:var(--wb-warn);font-size:12.5px;border-radius:10px;display:inline-flex;align-items:center;gap:8px;align-self:center}.auth-shell{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:linear-gradient(180deg,var(--wb-bg) 0%,#0a1f1a 100%)}.auth-card{width:100%;max-width:420px;background:var(--wb-panel);border:1px solid var(--wb-border);border-radius:16px;padding:32px;box-shadow:0 12px 40px #00000073}.auth-brand{display:flex;align-items:center;gap:10px;margin-bottom:6px;color:var(--wb-accent);font-weight:600;font-size:22px}.auth-card h1{margin:8px 0 4px;font-size:22px;font-weight:600}.auth-card .subtitle{margin:0 0 20px;color:var(--wb-text-muted);font-size:13.5px;line-height:1.5}.auth-card label{display:block;font-size:12.5px;text-transform:uppercase;letter-spacing:.04em;color:var(--wb-text-muted);margin:14px 0 6px}.auth-card input{width:100%;padding:11px 14px;background:var(--wb-panel-2);color:var(--wb-text);border:1px solid var(--wb-border);border-radius:8px;font-size:14.5px;outline:none;transition:border-color .12s ease}.auth-card input:focus{border-color:var(--wb-accent)}.btn-primary{width:100%;margin-top:22px;padding:12px;background:var(--wb-accent);color:#04231d;border:0;border-radius:8px;font-weight:600;font-size:15px;transition:background .12s ease,opacity .12s ease}.btn-primary:hover{background:var(--wb-accent-2)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.auth-switch{text-align:center;margin-top:18px;font-size:13.5px;color:var(--wb-text-muted)}.auth-switch a{color:var(--wb-accent);text-decoration:none;font-weight:500}.auth-error{margin-top:14px;padding:10px 12px;background:#f15c6d1f;border:1px solid rgba(241,92,109,.4);color:var(--wb-danger);border-radius:8px;font-size:13px}.spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,.2);border-top-color:var(--wb-text);border-radius:50%;animation:spin .8s linear infinite;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}.full-spinner{min-height:100vh;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:12px;color:var(--wb-text-muted);font-size:14px}.user-search-result{display:flex;gap:12px;padding:12px 16px;cursor:pointer;align-items:center}.user-search-result:hover{background:var(--wb-panel-2)}.empty-list{padding:24px 16px;text-align:center;color:var(--wb-text-muted);font-size:13.5px}.encrypted-pill{display:inline-flex;align-items:center;gap:4px;font-size:11px;color:var(--wb-accent);background:#00a8841f;padding:2px 8px;border-radius:999px}.connection-status{font-size:11px;color:var(--wb-text-muted);display:inline-flex;align-items:center;gap:4px}.connection-status .dot{width:8px;height:8px;border-radius:50%;background:var(--wb-text-muted)}.connection-status.online .dot{background:var(--wb-accent)}.connection-status.offline .dot{background:var(--wb-danger)}.demo-section{margin-top:26px}.demo-divider{display:flex;align-items:center;gap:12px;margin:10px 0 14px;color:var(--wb-text-muted);font-size:12px}.demo-divider:before,.demo-divider:after{content:"";flex:1;height:1px;background:var(--wb-border)}.demo-hint{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--wb-text-muted);margin-bottom:10px}.demo-buttons{display:grid;grid-template-columns:1fr 1fr;gap:10px}.demo-btn{display:flex;align-items:center;gap:10px;padding:10px 12px;background:var(--wb-panel-2);border:1px solid var(--wb-border);color:var(--wb-text);border-radius:10px;transition:background .12s ease,border-color .12s ease,transform .12s ease}.demo-btn:hover:not(:disabled){background:var(--wb-panel-3);border-color:var(--wb-accent)}.demo-btn:disabled{opacity:.55;cursor:not-allowed}.demo-avatar{width:32px;height:32px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;color:#04231d;font-weight:700;flex-shrink:0}