:root{--bg-primary: #0f0f12;--bg-secondary: #18181d;--bg-tertiary: #222228;--bg-chat: #16161a;--border: #2a2a32;--text: #e4e4e7;--text-muted: #71717a;--accent: #22c55e;--accent-hover: #16a34a;--danger: #ef4444;--radius: 12px;--radius-sm: 8px;--font: "Outfit", system-ui, sans-serif;--font-mono: "JetBrains Mono", monospace}*{box-sizing:border-box}html,body,#root{min-height:100vh;height:100%}body{margin:0;font-family:var(--font);background:var(--bg-primary);color:var(--text);-webkit-font-smoothing:antialiased}input,button,textarea{font-family:var(--font)}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.app{display:flex;height:100vh;max-height:100vh;overflow:hidden}.sidebar{width:320px;min-width:280px;background:var(--bg-secondary);border-right:1px solid var(--border);display:flex;flex-direction:column}.sidebar-header{padding:16px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:12px}.sidebar-title{font-size:1.25rem;font-weight:700;letter-spacing:-.02em}.sidebar-user-row{display:flex;align-items:center;gap:10px}.sidebar-user-row:hover{background:var(--bg-tertiary)}.sidebar-user-avatar,.sidebar-user-avatar-letter{width:36px;height:36px;border-radius:50%;flex-shrink:0}.sidebar-user-avatar{object-fit:cover}.sidebar-user-avatar-letter{background:var(--bg-tertiary);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:1rem}.sidebar-search{padding:10px 16px;border-bottom:1px solid var(--border)}.chat-search-input{width:100%;padding:10px 12px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);font-size:.9rem}.chat-search-input::placeholder{color:var(--text-muted)}.chat-search-input:focus{outline:none;border-color:var(--accent)}.chat-list{flex:1;overflow-y:auto}.chat-item{display:flex;align-items:center;gap:12px;padding:14px 16px;cursor:pointer;border-bottom:1px solid var(--border);transition:background .15s}.chat-item:hover{background:var(--bg-tertiary)}.chat-item.active{background:var(--bg-tertiary);border-left:3px solid var(--accent)}.chat-avatar{width:48px;height:48px;border-radius:50%;background:var(--bg-tertiary);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:1.1rem;flex-shrink:0}.chat-avatar.private{background:linear-gradient(135deg,#3b82f6,#8b5cf6)}.chat-avatar.group{background:linear-gradient(135deg,#22c55e,#14b8a6)}.chat-avatar.channel{background:linear-gradient(135deg,#f59e0b,#ef4444)}.chat-avatar-img.chat-avatar{padding:0;overflow:hidden}.chat-avatar-img.chat-avatar img{width:100%;height:100%;object-fit:cover}.chat-info{flex:1;min-width:0}.chat-name{font-weight:600;font-size:.95rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-preview{font-size:.8rem;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px}.chat-main{flex:1;display:flex;flex-direction:column;background:var(--bg-chat);min-width:0}.chat-header{padding:14px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:12px;background:var(--bg-secondary)}.chat-header-title{font-weight:600;font-size:1rem}.chat-type-badge{font-size:.7rem;padding:2px 8px;border-radius:999px;background:var(--bg-tertiary);color:var(--text-muted)}.chat-header-avatar,.chat-header-avatar-letter{width:40px;height:40px;border-radius:50%;flex-shrink:0;object-fit:cover}.chat-header-avatar-letter{background:var(--bg-tertiary);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:1.1rem}.chat-header-edit{margin-left:auto}.messages{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:12px}.message{display:flex;flex-direction:column;max-width:75%;align-self:flex-start}.message.own{align-self:flex-end;align-items:flex-end}.message-bubble{padding:10px 14px;border-radius:var(--radius);background:var(--bg-tertiary);border:1px solid var(--border);word-break:break-word}.message.own .message-bubble{background:#1a3d2a;border-color:#22c55e4d}.message-author{font-size:.75rem;color:var(--accent);margin-bottom:4px}.message-content{font-size:.95rem;line-height:1.45}.message-time{font-size:.7rem;color:var(--text-muted);margin-top:4px}.message-attachment{margin-top:8px;border-radius:var(--radius-sm);overflow:hidden}.message-attachment img{max-width:280px;max-height:240px;display:block;border-radius:var(--radius-sm)}.chat-image-clickable{cursor:pointer}.message-attachment video{max-width:320px;max-height:240px;border-radius:var(--radius-sm)}.message-attachment a{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;background:var(--bg-secondary);border-radius:var(--radius-sm);font-size:.85rem;color:var(--text);text-decoration:none}.message-attachment a:hover{background:var(--border)}.input-area{padding:16px 20px;border-top:1px solid var(--border);background:var(--bg-secondary)}.input-row{display:flex;align-items:flex-end;gap:10px}.input-wrap{flex:1;display:flex;align-items:flex-end;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius);padding:8px 12px;min-height:44px}.input-wrap:focus-within{border-color:var(--accent);box-shadow:0 0 0 2px #22c55e33}.input-wrap textarea{flex:1;border:none;background:none;color:var(--text);font-size:.95rem;resize:none;min-height:26px;max-height:120px;outline:none}.input-wrap textarea::placeholder{color:var(--text-muted)}.btn{padding:10px 18px;border:none;border-radius:var(--radius-sm);font-weight:500;font-size:.9rem;cursor:pointer;transition:background .15s;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-secondary{background:var(--bg-tertiary);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{background:var(--border)}.btn-icon{width:44px;height:44px;padding:0;border-radius:var(--radius);background:var(--bg-tertiary);color:var(--text);border:1px solid var(--border)}.btn-icon:hover{background:var(--border);color:var(--accent)}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:radial-gradient(ellipse at 50% 0%,rgba(34,197,94,.12) 0%,transparent 50%),var(--bg-primary)}.auth-card{width:100%;max-width:400px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:16px;padding:32px}.auth-title{font-size:1.5rem;font-weight:700;margin-bottom:8px}.auth-subtitle{color:var(--text-muted);font-size:.9rem;margin-bottom:24px}.auth-form .field{margin-bottom:16px}.auth-form label{display:block;font-size:.85rem;font-weight:500;margin-bottom:6px;color:var(--text-muted)}.auth-form input{width:100%;padding:12px 14px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);font-size:1rem}.auth-form input:focus{outline:none;border-color:var(--accent)}.auth-form .btn-primary{width:100%;padding:14px;margin-top:8px}.auth-toggle{text-align:center;margin-top:20px;font-size:.9rem;color:var(--text-muted)}.empty-chat{flex:1;display:flex;align-items:center;justify-content:center;color:var(--text-muted);font-size:1rem}.modal-overlay{position:fixed;inset:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:100;padding:24px}.modal{background:var(--bg-secondary);border:1px solid var(--border);border-radius:16px;padding:24px;width:100%;max-width:400px}.modal h3{margin:0 0 16px;font-size:1.2rem}.modal .field{margin-bottom:14px}.modal .field label{display:block;font-size:.85rem;color:var(--text-muted);margin-bottom:4px}.modal .field input{width:100%;padding:10px 12px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text)}.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:20px}.profile-avatar-row{display:flex;justify-content:center;margin-bottom:16px}.profile-avatar-wrap{width:96px;height:96px;border-radius:50%;overflow:hidden;background:var(--bg-tertiary);border:2px dashed var(--border);display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;transition:border-color .2s}.profile-avatar-wrap:hover{border-color:var(--accent)}.profile-avatar-img{width:100%;height:100%;object-fit:cover}.profile-avatar-letter{font-size:2.5rem;font-weight:600;color:var(--text-muted)}.profile-avatar-hint{font-size:.7rem;color:var(--text-muted);margin-top:4px}.user-list-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:var(--radius-sm);cursor:pointer;transition:background .15s}.user-list-item:hover{background:var(--bg-tertiary)}.file-preview{font-size:.8rem;color:var(--text-muted);margin-top:6px;display:flex;align-items:center;gap:6px}.file-preview button{background:none;border:none;color:var(--danger);cursor:pointer;padding:0;font-size:.9rem}.lightbox-overlay{position:fixed;inset:0;background:#000000e6;display:flex;align-items:center;justify-content:center;z-index:1000;padding:24px}.lightbox-close{position:absolute;top:16px;right:16px;width:44px;height:44px;border:none;border-radius:50%;background:var(--bg-tertiary);color:var(--text);font-size:1.25rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .15s}.lightbox-close:hover{background:var(--border)}.lightbox-image{max-width:100%;max-height:100%;object-fit:contain;border-radius:var(--radius)}.error-msg{color:var(--danger);font-size:.85rem;margin-top:8px}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}