:root{--bg: #0f1115;--panel: #161a22;--panel-2: #1f2430;--border: #2a3040;--text: #e6e8ee;--muted: #8a92a5;--accent: #4f8cff;--accent-2: #3a6fd1;--danger: #e05353;--bubble-me: #2f6feb;--bubble-other: #232836;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color-scheme:dark}*{box-sizing:border-box}html,body,#root{height:100%;margin:0;background:var(--bg);color:var(--text)}button{font:inherit;color:inherit;background:var(--accent);border:none;border-radius:8px;padding:10px 14px;cursor:pointer}button:hover{background:var(--accent-2)}button:disabled{opacity:.5;cursor:not-allowed}button.secondary{background:var(--panel-2)}button.secondary:hover{background:var(--border)}button.danger{background:var(--danger)}input,textarea{font:inherit;color:inherit;background:var(--panel-2);border:1px solid var(--border);border-radius:8px;padding:10px 12px;outline:none}input:focus,textarea:focus{border-color:var(--accent)}.login{min-height:100%;display:grid;place-items:center;padding:24px}.login-card{width:100%;max-width:360px;background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:24px;display:flex;flex-direction:column;gap:12px}.login-title{font-size:22px;font-weight:600;margin:0 0 8px}.error{color:var(--danger);font-size:13px}.link-btn{background:none;color:var(--accent);padding:0;text-align:left}.link-btn:hover{background:none;text-decoration:underline}.app-shell{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-header{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;border-bottom:1px solid var(--border)}.sidebar-title{font-size:17px;font-weight:600}.chat-list{flex:1;overflow-y:auto;min-height:0}.chat-row{display:flex;gap:12px;padding:12px 16px;cursor:pointer;border-bottom:1px solid var(--border);align-items:center}.chat-row:hover,.chat-row.active{background:var(--panel-2)}.avatar{width:42px;height:42px;border-radius:50%;background:var(--accent-2);display:grid;place-items:center;font-weight:600;flex-shrink:0}.chat-row-main{flex:1;min-width:0}.chat-row-name{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chat-row-preview{color:var(--muted);font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chat-row-time{color:var(--muted);font-size:12px;align-self:flex-start;margin-top:2px}.chat-pane{display:flex;flex-direction:column;min-height:0}.chat-header{display:flex;justify-content:space-between;align-items:center;padding:12px 20px;border-bottom:1px solid var(--border);background:var(--panel)}.chat-header-title{font-weight:600}.chat-header-actions{display:flex;gap:8px}.icon-btn{background:var(--panel-2);padding:8px 10px;border-radius:8px;font-size:16px}.messages{flex:1;overflow-y:auto;display:flex;flex-direction:column-reverse;padding:16px 20px;gap:6px;min-height:0}.message{max-width:70%;padding:8px 12px;border-radius:12px;background:var(--bubble-other);align-self:flex-start;word-wrap:break-word}.message.me{background:var(--bubble-me);align-self:flex-end}.message-text{white-space:pre-wrap;word-break:break-word}.message-time{font-size:11px;color:var(--muted);margin-top:4px}.message.me .message-time{color:#cfe0ff}.composer{display:flex;gap:8px;padding:12px 16px;border-top:1px solid var(--border);background:var(--panel);align-items:center}.composer input[type=text]{flex:1}.message-attachments{display:flex;flex-direction:column;gap:6px;margin-bottom:6px}.attach{display:block;max-width:280px;border-radius:8px;overflow:hidden}.attach-loading,.attach-error{width:200px;height:80px;display:grid;place-items:center;background:#ffffff0f;color:var(--muted);font-size:12px}.attach-image{display:block;max-width:280px;max-height:280px;width:auto;height:auto;object-fit:cover}.attach-video{max-width:320px;max-height:280px;border-radius:8px;background:#000}.attach-audio{max-width:280px}.attach-file{display:flex;align-items:center;gap:10px;padding:10px 12px;background:#ffffff0f;color:var(--text);text-decoration:none}.message.me .attach-file{background:#ffffff2e}.attach-file-icon{font-size:22px}.attach-file-meta{display:flex;flex-direction:column;font-size:13px;min-width:0}.attach-file-name{font-weight:500}.attach-file-size{color:var(--muted);font-size:11px}.message.me .attach-file-size{color:#cfe0ff}.pending-bar{display:flex;flex-wrap:wrap;gap:6px;padding:8px 16px;border-top:1px solid var(--border);background:var(--panel)}.pending-chip{display:inline-flex;align-items:center;gap:6px;padding:6px 8px 6px 10px;background:var(--panel-2);border:1px solid var(--border);border-radius:16px;font-size:12px;max-width:220px}.pending-chip.pending-error{border-color:var(--danger)}.pending-icon{font-size:14px}.pending-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:140px}.pending-err{color:var(--danger);font-weight:700}.pending-remove{background:transparent;color:var(--muted);padding:0 4px;font-size:16px;line-height:1;border-radius:50%}.pending-remove:hover{background:var(--border);color:var(--text)}.empty{display:grid;place-items:center;height:100%;color:var(--muted)}.spinner{display:inline-block;width:16px;height:16px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.incoming-call{position:fixed;top:20px;right:20px;width:320px;background:var(--panel);border:1px solid var(--accent);border-radius:12px;padding:16px;display:flex;flex-direction:column;gap:12px;box-shadow:0 10px 30px #00000080;z-index:100}.incoming-call-actions{display:flex;gap:8px}.incoming-call-actions button{flex:1}.call{height:100%;background:#000;display:flex;flex-direction:column}.call-grid{flex:1;display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:2px;padding:2px;min-height:0;overflow:hidden}.call-tile{background:#111;position:relative;overflow:hidden;border-radius:8px;aspect-ratio:16 / 9}.call-tile video{width:100%;height:100%;object-fit:cover}.call-placeholder{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;background:#222;color:#fff;font-size:36px;font-weight:600}.call-name{position:absolute;left:8px;bottom:8px;background:#0000008c;padding:4px 8px;border-radius:4px;font-size:12px}.call-controls{display:flex;justify-content:center;gap:16px;padding:20px;background:#000}.call-controls button{width:56px;height:56px;border-radius:50%;font-size:22px;padding:0;background:#333}.call-controls button.off{background:#5a1d1d}.call-controls button.hangup{background:var(--danger)}.sidebar-header-actions{display:flex;gap:6px;align-items:center}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000008c;display:grid;place-items:center;z-index:200;padding:16px}.modal{width:100%;max-width:380px;background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:20px;display:flex;flex-direction:column;gap:12px}.modal-title{font-size:18px;font-weight:600}.modal-subtitle{color:var(--muted);font-size:13px}.modal-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:4px}.mode-switch{display:flex;gap:6px}.mode-switch button{flex:1}.chat-header-members{color:var(--muted);font-size:12px;margin-top:2px}.user-list{display:flex;flex-direction:column;gap:4px;max-height:300px;overflow-y:auto;padding:4px 2px}.user-list-row{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:8px;cursor:pointer;background:var(--panel-2);transition:background .1s}.user-list-row:hover{background:var(--border)}.user-list-row.selected{background:#4f8cff26;outline:1px solid var(--accent)}.user-list-row input{accent-color:var(--accent)}.user-list-meta{display:flex;flex-direction:column;min-width:0;flex:1}.user-list-name{font-weight:500}.user-list-email{color:var(--muted);font-size:12px}.chat-overlay{position:fixed;top:0;left:0;bottom:0;width:380px;max-width:100vw;background:#0f1115f7;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-right:1px solid var(--border);z-index:50;display:flex;flex-direction:column;box-shadow:4px 0 16px #00000080;animation:slideInLeft .2s ease-out}@keyframes slideInLeft{0%{transform:translate(-100%)}to{transform:translate(0)}}.chat-overlay-header{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;border-bottom:1px solid var(--border);font-weight:600}.chat-overlay-body{flex:1;display:flex;flex-direction:column;min-height:0;overflow:hidden}.chat-overlay .chat-header{display:none}.call-tile-screen{outline:2px solid #4caf50;outline-offset:-2px}.call-grid.has-screen{flex-direction:column;flex-wrap:nowrap;gap:0;padding:0}.call-grid.has-screen .call-main{flex:1;display:flex;min-height:0}.call-grid.has-screen .call-main .call-tile{flex:1;width:100%;min-height:0;border:0;outline:none}.call-grid.has-screen .call-main .call-tile video{width:100%;height:100%;object-fit:contain;background:#000}.call-grid.has-screen .call-filmstrip{display:flex;gap:6px;padding:6px;overflow-x:auto;flex-shrink:0;background:#0006}.call-grid.has-screen .call-filmstrip .call-tile{width:160px;height:110px;flex-shrink:0}