*{margin:0;padding:0;box-sizing:border-box}:root{--primary: #6C63FF;--primary-dark: #5A52D5;--bg: #f8f9fa;--surface: #ffffff;--text: #1a1a2e;--text-secondary: #6c757d;--border: #e9ecef;--success: #28a745;--danger: #dc3545}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;-webkit-font-smoothing:antialiased}#app{max-width:600px;margin:0 auto;min-height:100vh;display:flex;flex-direction:column}.landing{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;padding:32px;text-align:center}.landing-icon{width:80px;height:80px;background:var(--primary);border-radius:20px;display:flex;align-items:center;justify-content:center;margin-bottom:24px}.landing-icon svg{width:48px;height:48px;fill:#fff}.landing h1{font-size:28px;font-weight:700;margin-bottom:8px}.landing .subtitle{color:var(--text-secondary);margin-bottom:32px;font-size:16px}.owner-info{display:flex;align-items:center;gap:12px;background:var(--surface);padding:16px 24px;border-radius:16px;margin-bottom:24px;box-shadow:0 2px 8px #0000000f}.owner-avatar{width:48px;height:48px;border-radius:50%;background:var(--primary);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;font-size:20px}.owner-avatar img{width:100%;height:100%;border-radius:50%;object-fit:cover}.input-group{width:100%;margin-bottom:16px}.input-group input{width:100%;padding:14px 20px;border:2px solid var(--border);border-radius:12px;font-size:16px;font-family:inherit;outline:none;transition:border-color .2s}.input-group input:focus{border-color:var(--primary)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 32px;border:none;border-radius:12px;font-size:16px;font-weight:600;font-family:inherit;cursor:pointer;transition:all .2s;width:100%}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.notification-banner{background:var(--success);color:#fff;padding:16px;text-align:center;font-weight:500}.chat-container{display:flex;flex-direction:column;height:100vh}.chat-header{background:var(--primary);color:#fff;padding:16px 20px;display:flex;align-items:center;gap:12px}.chat-header-avatar{width:40px;height:40px;border-radius:50%;background:#fff3;display:flex;align-items:center;justify-content:center;font-weight:600}.chat-header-avatar img{width:100%;height:100%;border-radius:50%;object-fit:cover}.chat-header-info h2{font-size:18px;font-weight:600}.chat-header-info .status{font-size:13px;opacity:.8}.chat-messages{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:8px}.message{max-width:80%;padding:10px 16px;border-radius:16px;font-size:15px;line-height:1.4;word-wrap:break-word}.message-scanner{align-self:flex-end;background:var(--primary);color:#fff;border-bottom-right-radius:4px}.message-owner{align-self:flex-start;background:var(--surface);border:1px solid var(--border);border-bottom-left-radius:4px}.message-time{font-size:11px;opacity:.7;margin-top:4px;text-align:right}.typing-indicator{align-self:flex-start;color:var(--text-secondary);font-size:13px;font-style:italic;padding:4px 0}.chat-input{padding:12px 16px;background:var(--surface);border-top:1px solid var(--border);display:flex;gap:8px;align-items:center}.chat-input input{flex:1;padding:12px 16px;border:2px solid var(--border);border-radius:24px;font-size:15px;font-family:inherit;outline:none}.chat-input input:focus{border-color:var(--primary)}.chat-input button{width:44px;height:44px;border:none;border-radius:50%;background:var(--primary);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0}.chat-input button:hover{background:var(--primary-dark)}.loading{display:flex;align-items:center;justify-content:center;min-height:100vh}.spinner{width:40px;height:40px;border:4px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.error-page{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;padding:32px;text-align:center}.error-page h1{font-size:48px;color:var(--danger)}.error-page p{color:var(--text-secondary);margin-top:8px}