.auth-container{display:flex;align-items:center;justify-content:center;min-height:100vh;background:#f4f5f7}.auth-card{background:#fff;padding:2rem;border-radius:8px;box-shadow:0 2px 8px #0000001a;width:100%;max-width:360px}.auth-card h1{margin:0 0 .5rem;font-size:1.5rem;text-align:center;color:#4f46e5}.auth-card h2{margin:0 0 1.5rem;font-size:1.1rem;text-align:center;color:#374151;font-weight:500}.auth-card input{width:100%;padding:.75rem;margin-bottom:.75rem;border:1px solid #d1d5db;border-radius:6px;font-size:.95rem;box-sizing:border-box}.auth-card button{width:100%;padding:.75rem;background:#4f46e5;color:#fff;border:none;border-radius:6px;font-size:1rem;cursor:pointer}.auth-card button:hover{background:#4338ca}.auth-error{background:#fee2e2;color:#991b1b;padding:.6rem;border-radius:6px;margin-bottom:1rem;font-size:.9rem}.auth-link{text-align:center;margin-top:1rem;font-size:.9rem;color:#4b5563}.auth-link a{color:#4f46e5;text-decoration:none}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:100}.modal{background:var(--surface);color:var(--text);border-radius:12px;width:min(420px,90vw);max-height:80vh;overflow:auto;padding:1.25rem;box-shadow:0 10px 30px #0003}.modal h3{margin:0 0 .75rem}.modal input[type=text]{width:100%;margin:.5rem 0;padding:.6rem .75rem;border:1px solid var(--border);border-radius:8px;background:var(--bg);color:var(--text)}.modal .toggle{display:flex;align-items:center;gap:.5rem;margin-bottom:.5rem;cursor:pointer}.user-list{list-style:none;margin:.5rem 0 1rem;padding:0;max-height:220px;overflow-y:auto;border:1px solid var(--border);border-radius:8px}.user-list li{display:flex;flex-direction:column;padding:.6rem .75rem;border-bottom:1px solid var(--border);cursor:pointer}.user-list li:last-child{border-bottom:none}.user-list li.selected{background:var(--primary-light)}.user-list .name{font-weight:600}.user-list .email{font-size:.8rem;opacity:.75}.modal-actions{display:flex;justify-content:flex-end;gap:.5rem}.modal-actions button{padding:.5rem 1rem;border-radius:8px;border:none;cursor:pointer}.modal-actions .primary{background:var(--primary);color:#fff}.modal-actions .secondary{background:var(--border);color:var(--text)}.hint{font-size:.85rem;opacity:.7}*{box-sizing:border-box}:root{--wa-bg: #111b21;--wa-panel: #202c33;--wa-panel-light: #2a3942;--wa-teal: #00a884;--wa-teal-dark: #008069;--wa-text: #e9edef;--wa-text-secondary: #8696a0;--wa-bubble-in: #202c33;--wa-bubble-out: #005c4b;--wa-input-bg: #2a3942;--wa-border: rgba(134, 150, 160, .15);--wa-danger: #ef5350;--wa-shadow: 0 4px 12px rgba(0, 0, 0, .25)}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background:#0b141a;color:var(--wa-text)}#root{height:100vh;width:100vw}.loading-screen{display:flex;align-items:center;justify-content:center;height:100vh;background:var(--wa-bg);color:var(--wa-text-secondary)}.auth-page{display:flex;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,#00a884,#008069);padding:20px}.auth-card{background:#fff;padding:40px;border-radius:8px;box-shadow:var(--wa-shadow);width:100%;max-width:400px;color:#111b21}.auth-card h1{margin:0 0 8px;font-size:28px;color:#111b21}.auth-card h2{margin:0 0 24px;font-size:18px;font-weight:400;color:#667781}.auth-error{background:#ffe6e6;color:#c62828;padding:10px 14px;border-radius:6px;margin-bottom:16px;font-size:14px}.auth-card input{width:100%;padding:14px 16px;margin-bottom:14px;border:1px solid #e9edef;border-radius:8px;font-size:15px;outline:none;transition:border-color .2s}.auth-card input:focus{border-color:var(--wa-teal)}.auth-card button[type=submit]{width:100%;padding:14px;margin-top:8px;background:var(--wa-teal);color:#fff;border:none;border-radius:24px;font-size:16px;font-weight:500;cursor:pointer;transition:background .2s}.auth-card button[type=submit]:hover:not(:disabled){background:var(--wa-teal-dark)}.auth-card button[type=submit]:disabled{opacity:.7;cursor:not-allowed}.auth-card .link{background:none;border:none;color:var(--wa-teal);cursor:pointer;font-size:14px;padding:0;text-decoration:underline}.auth-card p{margin-top:20px;text-align:center;color:#667781;font-size:14px}.chat-layout{display:flex;height:100vh;width:100vw;background:var(--wa-bg)}.chat-sidebar{width:360px;min-width:300px;background:var(--wa-panel);display:flex;flex-direction:column;border-right:1px solid var(--wa-border)}.sidebar-header{padding:10px 16px;background:var(--wa-panel);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--wa-border)}.user-info{display:flex;align-items:center;gap:12px;cursor:pointer;flex:1;min-width:0}.user-info .avatar,.avatar{width:40px;height:40px;border-radius:50%;background:var(--wa-teal);display:flex;align-items:center;justify-content:center;font-weight:500;color:#fff;flex-shrink:0;overflow:hidden}.avatar img{width:100%;height:100%;object-fit:cover}.user-name{font-weight:500;color:var(--wa-text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-status{font-size:12px;color:var(--wa-text-secondary)}.header-actions{display:flex;gap:8px}.icon-btn{width:40px;height:40px;border-radius:50%;border:none;background:transparent;color:var(--wa-text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s,color .2s}.icon-btn:hover{background:#8696a026;color:var(--wa-text)}.sidebar-tabs{display:flex;padding:8px 16px;gap:8px;border-bottom:1px solid var(--wa-border)}.sidebar-tabs .tab{flex:1;padding:8px;background:transparent;border:none;border-radius:18px;color:var(--wa-text-secondary);cursor:pointer;font-size:14px;transition:background .2s,color .2s}.sidebar-tabs .tab:hover,.sidebar-tabs .tab.active{background:#8696a026;color:var(--wa-teal)}.conversation-list{flex:1;overflow-y:auto}.conversation-item{padding:12px 16px;cursor:pointer;display:flex;align-items:center;gap:12px;transition:background .15s}.conversation-item:hover,.conversation-item.active{background:var(--wa-panel-light)}.conversation-info{flex:1;min-width:0}.conversation-name-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:4px}.conversation-name{font-weight:500;color:var(--wa-text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conversation-time{font-size:12px;color:var(--wa-text-secondary);flex-shrink:0}.conversation-preview{font-size:14px;color:var(--wa-text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.unread-badge{background:var(--wa-teal);color:#fff;border-radius:12px;padding:2px 8px;font-size:12px;font-weight:600;min-width:20px;text-align:center}.sidebar-footer{padding:10px 16px;border-top:1px solid var(--wa-border);display:flex;justify-content:space-between;align-items:center}.settings-btn{display:flex;align-items:center;gap:8px;background:transparent;border:none;color:var(--wa-text-secondary);cursor:pointer;font-size:14px;padding:8px 12px;border-radius:6px;transition:background .2s,color .2s}.settings-btn:hover{background:#8696a026;color:var(--wa-text)}.logout-btn{background:transparent;border:none;color:var(--wa-danger);cursor:pointer;font-size:14px;padding:8px 12px;border-radius:6px;transition:background .2s}.logout-btn:hover{background:#ef53501a}.chat-main{flex:1;display:flex;flex-direction:column;background:url("data:image/svg+xml,%3Csvg width='8' height='8' viewBox='0 0 8 8' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23202c33' fill-opacity='0.35'%3E%3Cpath d='M0 0h4v4H0zM4 4h4v4H4z'/%3E%3C/g%3E%3C/svg%3E"),var(--wa-bg);min-width:0}.chat-header{padding:10px 16px;background:var(--wa-panel);border-bottom:1px solid var(--wa-border);display:flex;align-items:center}.header-contact{display:flex;align-items:center;gap:12px}.header-contact h3{margin:0;font-size:16px;font-weight:500;color:var(--wa-text)}.header-status{font-size:13px;color:var(--wa-text-secondary)}.message-list{flex:1;overflow-y:auto;padding:20px 8%;display:flex;flex-direction:column;gap:2px}.message-list.loading{align-items:center;justify-content:center;color:var(--wa-text-secondary)}.empty-messages{text-align:center;color:var(--wa-text-secondary);margin:auto}.message{max-width:65%;padding:6px 7px 8px 9px;border-radius:7.5px;position:relative;word-wrap:break-word;font-size:14.2px;line-height:19px;margin-bottom:4px;align-self:flex-start;background:var(--wa-bubble-in);color:var(--wa-text)}.message.me{align-self:flex-end;background:var(--wa-bubble-out)}.message-sender{font-size:12.5px;font-weight:600;color:var(--wa-teal);margin-bottom:2px}.message-content{white-space:pre-wrap}.message-meta{display:flex;justify-content:flex-end;align-items:center;gap:4px;margin-top:2px;font-size:11px;color:var(--wa-text-secondary)}.message.me .message-meta{color:#99beb7}.message-input{display:flex;align-items:center;padding:10px 16px;gap:12px;background:var(--wa-panel)}.message-input input{flex:1;padding:12px 16px;border:none;border-radius:8px;background:var(--wa-input-bg);color:var(--wa-text);font-size:15px;outline:none}.message-input input::placeholder{color:var(--wa-text-secondary)}.message-input button{width:40px;height:40px;border-radius:50%;border:none;background:var(--wa-teal);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s}.message-input button:hover:not(:disabled){background:var(--wa-teal-dark)}.message-input button:disabled{opacity:.5;cursor:not-allowed}.empty-chat{flex:1;display:flex;align-items:center;justify-content:center;text-align:center;color:var(--wa-text-secondary)}.empty-chat-content h2{margin:0 0 12px;font-size:32px;color:var(--wa-text)}.empty-chat-content p{margin:0 0 24px;font-size:16px}.empty-chat-content button{padding:12px 24px;border-radius:24px;border:none;background:var(--wa-teal);color:#fff;font-size:15px;cursor:pointer}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0b141ad9;display:flex;align-items:center;justify-content:center;z-index:100}.modal{background:var(--wa-panel);padding:24px;border-radius:8px;width:480px;max-width:90%;color:var(--wa-text);box-shadow:var(--wa-shadow)}.modal h3{margin:0 0 16px;font-weight:500}.modal input,.modal textarea{width:100%;padding:12px 14px;margin-bottom:12px;border:none;border-radius:8px;background:var(--wa-input-bg);color:var(--wa-text);font-size:15px;outline:none}.modal input::placeholder,.modal textarea::placeholder{color:var(--wa-text-secondary)}.modal .user-list{max-height:240px;overflow-y:auto;border-radius:8px;margin-bottom:12px;background:var(--wa-bg)}.modal .user-item{padding:12px;cursor:pointer;display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--wa-border)}.modal .user-item:hover,.modal 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h2{margin:0;font-weight:500;font-size:18px}.back-btn{background:transparent;border:none;color:var(--wa-text-secondary);cursor:pointer;padding:8px;border-radius:50%;display:flex;align-items:center;justify-content:center}.back-btn:hover{background:#8696a026}.contact-list{flex:1;overflow-y:auto}.contact-item{padding:12px 16px;display:flex;align-items:center;gap:12px;cursor:pointer;transition:background .15s}.contact-item:hover{background:var(--wa-panel-light)}.contact-info .name{font-weight:500;color:var(--wa-text)}.contact-info .email{font-size:13px;color:var(--wa-text-secondary)}.contact-actions{display:flex;gap:8px}.contact-actions button{background:transparent;border:none;color:var(--wa-teal);cursor:pointer;padding:6px 10px;border-radius:4px;font-size:13px}.contact-actions button:hover{background:#00a8841a}.settings-layout{display:flex;height:100vh;width:100vw;background:var(--wa-bg)}.settings-sidebar{width:360px;min-width:300px;background:var(--wa-panel);border-right:1px solid var(--wa-border);display:flex;flex-direction:column}.settings-content{flex:1;padding:30px 8%;overflow-y:auto}.settings-content h3{margin:0 0 24px;font-weight:500;color:var(--wa-text)}.settings-section{background:var(--wa-panel);border-radius:8px;padding:24px;margin-bottom:24px}.settings-section h4{margin:0 0 16px;font-weight:500;color:var(--wa-teal)}.settings-field{margin-bottom:16px}.settings-field label{display:block;font-size:13px;color:var(--wa-text-secondary);margin-bottom:6px}.settings-field input,.settings-field textarea{width:100%;padding:12px 14px;border:none;border-radius:8px;background:var(--wa-input-bg);color:var(--wa-text);font-size:15px;outline:none}.settings-field textarea{resize:vertical;min-height:80px}.avatar-upload{display:flex;align-items:center;gap:16px;margin-bottom:20px}.avatar-upload .avatar{width:80px;height:80px;font-size:28px}.avatar-upload button{padding:10px 16px;border:none;border-radius:6px;background:var(--wa-panel-light);color:var(--wa-text);cursor:pointer}.avatar-upload button:hover{background:#8696a033}.save-btn{padding:12px 24px;border:none;border-radius:6px;background:var(--wa-teal);color:#fff;font-size:15px;cursor:pointer}.save-btn:hover{background:var(--wa-teal-dark)}.save-btn:disabled{opacity:.6;cursor:not-allowed}.success-msg{background:#00a88426;color:var(--wa-teal);padding:10px 14px;border-radius:6px;margin-bottom:16px}@media (max-width: 900px){.chat-sidebar,.contacts-sidebar,.settings-sidebar{width:100%;border-right:none}}