:root{--primary-color:#007bff;--primary-hover:#0056b3;--background-color:#f8f9fa;--modal-bg-color:#fff;--border-color:#dee2e6;--user-bubble-color:#007bff;--user-text-color:#fff;--operator-bubble-color:#e9ecef;--operator-text-color:#212529;--shadow-light:0 4px 12px rgba(0,0,0,.15);--safe-area-bottom:env(safe-area-inset-bottom,0)}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.container{padding:20px;max-width:1200px;margin:0 auto}.container h1{font-size:clamp(24px,5vw,32px)}.chat-button{position:fixed;bottom:max(20px,var(--safe-area-bottom));right:20px;width:56px;height:56px;border-radius:50%;background-color:var(--primary-color);color:var(--user-text-color);border:none;cursor:pointer;box-shadow:0 4px 16px rgba(0,123,255,.4);display:flex;align-items:center;justify-content:center;z-index:1000;transition:all .3s cubic-bezier(.4,0,.2,1);-webkit-tap-highlight-color:transparent;touch-action:manipulation}.chat-button:hover,.chat-button:focus{background-color:var(--primary-hover);transform:scale(1.05)}.chat-button:active{transform:scale(.95)}.chat-button:focus-visible{outline:3px solid rgba(0,123,255,.5);outline-offset:2px}.chat-button-badge{position:absolute;top:-4px;right:-4px;background-color:#dc3545;color:var(--user-text-color);font-size:11px;font-weight:bold;border-radius:50%;padding:2px 6px;min-width:20px;text-align:center;line-height:1.2;animation:pulse 2s infinite}@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}.chat-modal{display:none;position:fixed;inset:0;z-index:10000;background-color:rgba(0,0,0,0);transition:background-color .3s ease}.chat-modal.active{display:block;background-color:rgba(0,0,0,.4)}.chat-container{position:absolute;bottom:20px;right:20px;width:380px;max-width:calc(100vw - 40px);height:600px;max-height:calc(100vh - 40px);background-color:var(--modal-bg-color);border-radius:16px;box-shadow:0 8px 32px rgba(0,0,0,.2);display:flex;flex-direction:column;overflow:hidden;transform:translateY(20px) scale(.95);opacity:0;transition:all .3s cubic-bezier(.4,0,.2,1)}.chat-modal.active .chat-container{transform:translateY(0) scale(1);opacity:1}@media (max-width:576px){.chat-button{width:60px;height:60px;bottom:max(16px,var(--safe-area-bottom));right:16px}.chat-container{width:100%;height:100%;max-width:100%;max-height:100%;bottom:0;right:0;border-radius:0}.chat-modal.active{background-color:var(--background-color)}}.chat-header{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;background:linear-gradient(135deg,var(--primary-color),var(--primary-hover));color:var(--user-text-color);border-radius:16px 16px 0 0;min-height:70px}@media (max-width:576px){.chat-header{border-radius:0;padding-top:max(16px,env(safe-area-inset-top,0))}}.chat-header-info h3{margin:0 0 4px 0;font-size:18px;font-weight:600}.chat-status{font-size:13px;opacity:.9;display:flex;align-items:center;gap:6px}.chat-status::before{content:'';width:8px;height:8px;border-radius:50%;background-color:#4caf50;animation:pulse 2s infinite}.chat-close{background:rgba(255,255,255,.2);border:none;color:var(--user-text-color);cursor:pointer;width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:all .2s;-webkit-tap-highlight-color:transparent}.chat-close:hover,.chat-close:focus{background:rgba(255,255,255,.3)}.chat-close:focus-visible{outline:2px solid #fff;outline-offset:2px}.chat-verification{padding:24px 20px;flex-grow:1;display:flex;flex-direction:column;justify-content:center;align-items:center;overflow-y:auto}.verification-content{width:100%;max-width:320px}.verification-content h4{margin:0 0 8px 0;font-size:22px;color:#212529}.verification-content>p{margin:0 0 24px 0;color:#6c757d;font-size:15px}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:8px;font-size:14px;font-weight:500;color:#495057}.form-group input{width:100%;padding:12px 16px;border:2px solid var(--border-color);border-radius:8px;font-size:16px;transition:all .2s;-webkit-appearance:none}.form-group input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px rgba(0,123,255,.1)}.error-message{display:block;color:#dc3545;font-size:13px;margin-top:6px;min-height:18px}.btn-primary{width:100%;padding:14px;background-color:var(--primary-color);color:var(--user-text-color);border:none;border-radius:8px;cursor:pointer;font-size:16px;font-weight:600;transition:all .2s;-webkit-tap-highlight-color:transparent;touch-action:manipulation}.btn-primary:hover:not(:disabled) {background-color:var(--primary-hover);transform:translateY(-1px);box-shadow:0 4px 12px rgba(0,123,255,.3)}.btn-primary:active:not(:disabled) {transform:translateY(0)}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.btn-primary:focus-visible{outline:3px solid rgba(0,123,255,.5);outline-offset:2px}.chat-area{display:flex;flex-direction:column;flex-grow:1;overflow:hidden}.chat-messages{flex-grow:1;padding:16px;overflow-y:auto;overflow-x:hidden;background-color:var(--background-color);-webkit-overflow-scrolling:touch}.chat-messages::-webkit-scrollbar{width:6px}.chat-messages::-webkit-scrollbar-track{background:transparent}.chat-messages::-webkit-scrollbar-thumb{background:#cbd5e0;border-radius:3px}.message-bubble{display:flex;margin-bottom:12px;animation:slideIn .3s ease}@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}.message-content{max-width:75%;padding:10px 14px;border-radius:18px;line-height:1.5;font-size:15px;word-wrap:break-word;word-break:break-word}.message-user{justify-content:flex-end}.message-user .message-content{background-color:var(--user-bubble-color);color:var(--user-text-color);border-bottom-right-radius:4px}.message-operator{justify-content:flex-start}.message-operator .message-content{background-color:var(--operator-bubble-color);color:var(--operator-text-color);border-bottom-left-radius:4px}.message-time{font-size:11px;opacity:.7;margin-top:4px;display:block}.typing-indicator{display:flex;align-items:center;padding:8px 16px;font-size:13px;color:#6c757d}.typing-indicator span{display:inline-block;width:8px;height:8px;border-radius:50%;background-color:#6c757d;margin:0 2px;animation:bounce 1.4s infinite ease-in-out}.typing-indicator span:nth-child(1) {animation-delay:-.32s}.typing-indicator span:nth-child(2) {animation-delay:-.16s}@keyframes bounce {
    0%, 80%, 100% { transform: scale(0); opacity: 0.5; }
    40% { transform: scale(1); opacity: 1; }
}.chat-input{display:flex;align-items:flex-end;gap:12px;padding:12px 16px;padding-bottom:max(12px,var(--safe-area-bottom));border-top:1px solid var(--border-color);background-color:var(--modal-bg-color)}.chat-input textarea{flex-grow:1;resize:none;padding:10px 14px;border:2px solid var(--border-color);border-radius:20px;font-size:15px;font-family:inherit;max-height:120px;min-height:40px;line-height:1.4;transition:border-color .2s;-webkit-appearance:none}.chat-input textarea:focus{outline:none;border-color:var(--primary-color)}.btn-send{width:40px;height:40px;min-width:40px;background-color:var(--primary-color);color:var(--user-text-color);border:none;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;flex-shrink:0;-webkit-tap-highlight-color:transparent}.btn-send:hover:not(:disabled) {background-color:var(--primary-hover);transform:scale(1.05)}.btn-send:active:not(:disabled) {transform:scale(.95)}.btn-send:disabled{opacity:.5;cursor:not-allowed}.btn-send:focus-visible{outline:3px solid rgba(0,123,255,.5);outline-offset:2px}.system-message{text-align:center;padding:12px;color:#6c757d;font-size:13px;line-height:1.4}.loading-dots::after{content:'';animation:dots 1.5s steps(4,end) infinite}@keyframes dots {
    0%, 20% { content: ''; }
    40% { content: '.'; }
    60% { content: '..'; }
    80%, 100% { content: '...'; }
}@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}:focus:not(:focus-visible) {outline:none}@media (prefers-contrast:high){.chat-button,.btn-primary,.btn-send{border:2px solid currentColor}}