:root{--accent: #3a6ea5;--accent-hover: #325f8f;--bg: #0f141a;--panel: #161c24;--panel-2: #1d2530;--border: #263041;--text: #e6ebf2;--muted: #8a97a8;--danger: #d64545;--success: #2f9e57;color-scheme:dark}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:15px}input,button{font-family:inherit;font-size:inherit}.input{width:100%;padding:10px 12px;background:var(--panel-2);border:1px solid var(--border);border-radius:8px;color:var(--text);outline:none}.input:focus{border-color:var(--accent)}.btn{width:100%;padding:10px 14px;background:var(--accent);border:none;border-radius:8px;color:#fff;cursor:pointer;font-weight:600}.btn:hover{background:var(--accent-hover)}.btn:disabled{opacity:.5;cursor:default}.btn.small{width:auto;padding:8px 12px}.btn.danger{background:var(--danger)}.btn.success{background:var(--success)}.btn-link{background:none;border:none;color:var(--muted);cursor:pointer;padding:8px 0;text-align:left}.btn-link:hover{color:var(--text)}.field{display:block;margin-bottom:14px}.field-label{display:block;margin-bottom:6px;color:var(--muted);font-size:13px}.hint{color:var(--muted);margin:0 0 14px}.error{color:var(--danger);margin-top:12px}.error.small{font-size:13px;margin:8px 12px}.center-screen{height:100%;display:flex;align-items:center;justify-content:center}.auth-card{width:360px;max-width:calc(100vw - 32px);background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:28px}.auth-title{margin:0 0 20px;text-align:center;letter-spacing:.5px}.spinner{width:34px;height:34px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.app{display:grid;grid-template-columns:320px 1fr;height:100%}.sidebar{background:var(--panel);border-right:1px solid var(--border);display:flex;flex-direction:column;min-height:0}.sidebar-head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--border)}.me{display:flex;align-items:center;gap:8px;min-width:0}.me strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.dot{width:9px;height:9px;border-radius:50%;flex:none}.dot.ok{background:var(--success)}.dot.off{background:var(--muted)}.new-chat{display:flex;gap:8px;padding:12px 16px}.toolbar{display:flex;gap:8px;padding:0 16px 12px}.toolbar .btn{flex:1}.chat-head-sub{color:var(--muted);font-size:12px;margin-top:2px}.composer.readonly{justify-content:center;color:var(--muted);font-size:14px}.modal.wide{width:460px;max-width:calc(100vw - 32px);text-align:left}.modal.wide .modal-title{text-align:left}textarea.input{resize:vertical;font-family:inherit}.channel-list{list-style:none;margin:4px 0 12px;padding:0;max-height:260px;overflow-y:auto}.channel-row{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 0;border-bottom:1px solid var(--border)}.chat-list{list-style:none;margin:0;padding:0;overflow-y:auto;flex:1;min-height:0}.chat-item{position:relative;padding:12px 16px;border-bottom:1px solid var(--border);cursor:pointer}.chat-item:hover{background:var(--panel-2)}.chat-item.active{background:var(--panel-2);box-shadow:inset 3px 0 0 var(--accent)}.chat-item-title{font-weight:600;margin-bottom:3px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chat-item-preview{color:var(--muted);font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.badge{position:absolute;top:12px;right:16px;min-width:20px;height:20px;padding:0 6px;border-radius:10px;background:var(--accent);color:#fff;font-size:12px;display:flex;align-items:center;justify-content:center}.empty{padding:20px 16px;color:var(--muted)}.content{min-width:0;display:flex}.placeholder{margin:auto;color:var(--muted)}.chat{display:flex;flex-direction:column;width:100%;min-height:0}.chat-head{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--border)}.chat-head-title{font-weight:600}.messages{flex:1;overflow-y:auto;padding:18px;display:flex;flex-direction:column;gap:8px;min-height:0}.bubble{max-width:68%;padding:9px 13px;border-radius:14px;line-height:1.35;word-wrap:break-word}.bubble.mine{align-self:flex-end;background:var(--accent);color:#fff;border-bottom-right-radius:4px}.bubble.theirs{align-self:flex-start;background:var(--panel-2);border-bottom-left-radius:4px}.bubble.sending{opacity:.6}.bubble.image{padding:4px;max-width:320px}.msg-image{display:block;max-width:100%;border-radius:10px;cursor:pointer}.bubble.image .caption{padding:6px 8px 2px;font-size:14px}.load-older{align-self:center;color:var(--muted);font-size:12px;padding:6px}.tick{margin-left:6px;opacity:.7}.typing{align-self:flex-start;color:var(--muted);font-size:13px;font-style:italic}.composer{display:flex;gap:10px;padding:14px 18px;border-top:1px solid var(--border)}.composer .btn{width:auto}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:20}.modal{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:24px;width:300px;text-align:center}.modal-title{font-size:18px;font-weight:700;margin:0 0 4px}.modal-sub{color:var(--muted);margin:0 0 20px}.modal-actions{display:flex;gap:12px}.modal-actions .btn{width:50%}.call{position:fixed;top:0;right:0;bottom:0;left:0;background:#000;z-index:30}.remote-video{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;object-fit:contain;background:#000}.local-video{position:absolute;top:20px;right:20px;width:160px;height:220px;object-fit:cover;border-radius:10px;border:1px solid rgba(255,255,255,.2);background:#111;transform:scaleX(-1)}.local-video.hidden{display:none}.call-status{position:absolute;top:24px;left:24px;color:#fff;font-size:18px;text-shadow:0 1px 3px rgba(0,0,0,.7)}.call-controls{position:absolute;bottom:40px;left:0;right:0;display:flex;justify-content:center;gap:18px}.call-btn{width:60px;height:60px;border-radius:50%;border:none;background:#ffffff2e;color:#fff;font-size:24px;cursor:pointer}.call-btn:hover{background:#ffffff47}.call-btn.off{background:#fff}.call-btn.end{background:var(--danger)}@media (max-width: 720px){.app{grid-template-columns:1fr}}