.login-container{display:flex;align-items:center;justify-content:center;height:100vh;background:linear-gradient(135deg,var(--bg-deep) 0%,#1a1040 50%,var(--bg-deep) 100%)}.login-card{background:var(--bg-card);border:1px solid var(--border);border-radius:20px;padding:48px 40px;width:100%;max-width:420px;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px)}.login-logo{text-align:center;margin-bottom:32px}.logo-circle{width:72px;height:72px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-light));display:inline-flex;align-items:center;justify-content:center;font-size:32px;font-weight:700;color:#fff;margin-bottom:16px}.login-logo h1{font-size:24px;font-weight:700;color:var(--text-primary);margin-bottom:8px}.login-subtitle{font-size:14px;color:var(--text-muted);line-height:1.5}.login-error{background:#ef44441f;border:1px solid rgba(239,68,68,.3);color:#fca5a5;padding:10px 14px;border-radius:10px;font-size:13px;margin-bottom:16px}.login-form{display:flex;flex-direction:column;gap:12px}.login-form label{font-size:13px;color:var(--text-secondary);font-weight:500}.login-form input{width:100%;padding:14px 16px;background:var(--bg-surface);border:1px solid var(--border);border-radius:12px;color:var(--text-primary);font-size:16px;outline:none;transition:border-color .2s}.login-form input:focus{border-color:var(--primary)}.login-form input::placeholder{color:var(--text-muted)}.login-btn{width:100%;padding:14px;background:linear-gradient(135deg,var(--primary),var(--primary-light));border:none;border-radius:12px;color:#fff;font-size:15px;font-weight:600;cursor:pointer;transition:opacity .2s;margin-top:4px}.login-btn:hover{opacity:.9}.login-btn:disabled{opacity:.5;cursor:not-allowed}.login-btn-secondary{width:100%;padding:12px;background:transparent;border:1px solid var(--border);border-radius:12px;color:var(--text-secondary);font-size:14px;cursor:pointer;transition:background .2s}.login-btn-secondary:hover{background:#ffffff0d}.qr-section{display:flex;flex-direction:column;align-items:center;gap:16px}.qr-wrapper{background:#fff;padding:16px;border-radius:16px;display:inline-block}.qr-hint{font-size:13px;color:var(--text-muted);text-align:center;line-height:1.6}.qr-hint strong{color:var(--text-secondary)}.qr-status{text-align:center;color:var(--text-secondary);padding:40px 0;font-size:15px}.avatar{border-radius:50%;object-fit:cover;flex-shrink:0}.avatar-placeholder{background:linear-gradient(135deg,var(--primary),var(--primary-light));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;-webkit-user-select:none;user-select:none}.chat-list-item{display:flex;align-items:center;gap:12px;padding:12px 16px;cursor:pointer;transition:background .15s;border-bottom:1px solid var(--border)}.chat-list-item:hover{background:#6c5ce714}.chat-list-item.active{background:#6c5ce726;border-left:3px solid var(--primary)}.chat-list-item-content{flex:1;min-width:0}.chat-list-item-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:2px}.chat-list-item-name{font-size:15px;font-weight:600;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-list-item-time{font-size:12px;color:var(--text-muted);flex-shrink:0;margin-left:8px}.chat-list-item-message{font-size:13px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.message-row{display:flex;justify-content:flex-start;padding:2px 0}.message-row.own{justify-content:flex-end}.message-bubble{max-width:65%;padding:8px 12px;border-radius:12px 12px 12px 4px;background:var(--bg-card);border:1px solid var(--border);position:relative;word-wrap:break-word;overflow-wrap:break-word}.message-bubble.own{background:#6c5ce733;border-color:#6c5ce74d;border-radius:12px 12px 4px}.message-bubble.deleted{opacity:.6;font-style:italic}.deleted-text{color:var(--text-muted);font-size:13px}.forwarded-label{display:block;font-size:11px;font-style:italic;color:var(--text-muted);margin-bottom:2px}.sender-name{display:block;font-size:12px;font-weight:600;color:var(--primary-light);margin-bottom:2px}.reply-preview{background:#ffffff0f;border-left:3px solid var(--primary);padding:4px 8px;border-radius:0 6px 6px 0;margin-bottom:6px;font-size:12px}.reply-sender{display:block;color:var(--primary-light);font-weight:600;margin-bottom:1px}.reply-text{color:var(--text-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.message-text{font-size:14px;line-height:1.45;color:var(--text-primary);white-space:pre-wrap}.message-image{max-width:100%;max-height:300px;border-radius:8px;margin-bottom:4px;cursor:pointer}.message-video{max-width:100%;max-height:300px;border-radius:8px;margin-bottom:4px}.message-voice{display:flex;align-items:center;gap:8px}.message-voice audio{max-width:250px}.voice-icon,.file-icon,.location-icon{font-size:18px}.message-file{display:flex;align-items:center;gap:8px}.message-file a{color:var(--primary-light);text-decoration:none;font-size:14px}.message-file a:hover{text-decoration:underline}.message-location{display:flex;align-items:center;gap:6px;font-size:14px;color:var(--text-secondary)}.message-meta{display:flex;align-items:center;justify-content:flex-end;gap:4px;margin-top:2px}.edited-label{font-size:11px;font-style:italic;color:var(--text-muted)}.message-time{font-size:11px;color:var(--text-muted)}.message-status{font-size:12px;color:var(--primary-light)}.chat-page{display:flex;height:100vh;max-width:1400px;margin:0 auto;border-left:1px solid var(--border);border-right:1px solid var(--border)}.sidebar{width:380px;min-width:320px;border-right:1px solid var(--border);display:flex;flex-direction:column;background:var(--bg-surface)}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--border);background:var(--bg-card)}.sidebar-user{display:flex;align-items:center;gap:10px}.sidebar-username{font-size:16px;font-weight:600;color:var(--text-primary)}.logout-btn{background:none;border:none;color:var(--text-muted);font-size:20px;cursor:pointer;padding:6px 10px;border-radius:8px;transition:background .15s,color .15s}.logout-btn:hover{background:#ef44441f;color:var(--danger)}.sidebar-search{padding:10px 12px;border-bottom:1px solid var(--border)}.sidebar-search input{width:100%;padding:10px 14px;background:var(--bg-deep);border:1px solid var(--border);border-radius:10px;color:var(--text-primary);font-size:14px;outline:none;transition:border-color .2s}.sidebar-search input:focus{border-color:var(--primary)}.sidebar-search input::placeholder{color:var(--text-muted)}.chat-list{flex:1;overflow-y:auto}.chat-list-loading,.chat-list-empty{padding:32px;text-align:center;color:var(--text-muted);font-size:14px}.chat-area{flex:1;display:flex;flex-direction:column;background:var(--bg-deep);min-width:0}.chat-empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--text-muted)}.chat-empty-icon{font-size:72px;margin-bottom:16px;opacity:.5}.chat-empty h2{font-size:24px;font-weight:600;color:var(--text-secondary);margin-bottom:8px}.chat-empty p{font-size:15px}.chat-header{display:flex;align-items:center;gap:12px;padding:12px 20px;background:var(--bg-card);border-bottom:1px solid var(--border);flex-shrink:0}.back-btn{display:none;background:none;border:none;color:var(--text-primary);font-size:22px;cursor:pointer;padding:4px 8px;border-radius:8px}.back-btn:hover{background:#ffffff14}.chat-header-info{display:flex;flex-direction:column}.chat-header-name{font-size:16px;font-weight:600;color:var(--text-primary)}.chat-header-members{font-size:12px;color:var(--text-muted)}.messages-container{flex:1;overflow-y:auto;padding:16px 20px;display:flex;flex-direction:column;gap:4px}.messages-loading,.messages-empty{flex:1;display:flex;align-items:center;justify-content:center;color:var(--text-muted);font-size:14px}.message-input-container{display:flex;align-items:flex-end;gap:10px;padding:12px 20px;background:var(--bg-card);border-top:1px solid var(--border);flex-shrink:0}.message-input{flex:1;padding:12px 16px;background:var(--bg-surface);border:1px solid var(--border);border-radius:12px;color:var(--text-primary);font-size:15px;font-family:inherit;outline:none;resize:none;max-height:120px;line-height:1.4;transition:border-color .2s}.message-input:focus{border-color:var(--primary)}.message-input::placeholder{color:var(--text-muted)}.send-btn{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-light));border:none;color:#fff;font-size:20px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:opacity .2s,transform .15s;flex-shrink:0}.send-btn:hover{opacity:.9;transform:scale(1.05)}.send-btn:disabled{opacity:.4;cursor:not-allowed;transform:none}@media(max-width:768px){.sidebar{width:100%;min-width:0}.chat-area{position:fixed;top:0;left:0;right:0;bottom:0;z-index:10;display:none}.chat-area:has(.chat-header){display:flex}.back-btn{display:block}.chat-empty{display:none}}*{margin:0;padding:0;box-sizing:border-box}:root{--primary: #6C5CE7;--primary-dark: #5A4BD1;--primary-light: #A78BFA;--bg-deep: #0F0E1A;--bg-surface: #1A1930;--bg-card: #242340;--text-primary: #F0F0F5;--text-secondary: #B8B5D0;--text-muted: #6E6B8A;--border: rgba(255, 255, 255, .08);--danger: #EF4444;--success: #22C55E}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background:var(--bg-deep);color:var(--text-primary);overflow:hidden;height:100vh}#root{height:100vh}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#ffffff26;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#ffffff40}