{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.chat-widget {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 400px;
    height: 600px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1), 0 0 0 1px rgba(255, 255, 255, 0.2);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: slideUp 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    z-index: 9999;
}

.chat-widget.hidden {
    display: none;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.chat-header {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    padding: 20px;
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.chat-header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.1); }
}

.chat-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 4px;
    position: relative;
    z-index: 1;
}

.chat-status {
    font-size: 14px;
    opacity: 0.9;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    position: relative;
    z-index: 1;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: #10b981;
    border-radius: 50%;
    animation: blink 2s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0.3; }
}

.chat-close {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    color: white;
    font-size: 20px;
    cursor: pointer;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s ease;
    z-index: 2;
}

.chat-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.chat-messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
    scroll-behavior: smooth;
}

.chat-messages::-webkit-scrollbar {
    width: 4px;
}

.chat-messages::-webkit-scrollbar-track {
    background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 2px;
}

.message {
    max-width: 80%;
    animation: messageSlide 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes messageSlide {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.user {
    align-self: flex-end;
}

.message.ai {
    align-self: flex-start;
}

.message-content {
    padding: 12px 16px;
    border-radius: 18px;
    font-size: 14px;
    line-height: 1.4;
    word-wrap: break-word;
}

.message.user .message-content {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
    border-bottom-right-radius: 6px;
}

.message.ai .message-content {
    background: #f3f4f6;
    color: #374151;
    border-bottom-left-radius: 6px;
}

.typing-indicator {
    display: none;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: #f3f4f6;
    border-radius: 18px;
    border-bottom-left-radius: 6px;
    max-width: 80px;
}

.typing-indicator.show {
    display: flex;
    animation: messageSlide 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.typing-dots {
    display: flex;
    gap: 4px;
}

.typing-dot {
    width: 6px;
    height: 6px;
    background: #9ca3af;
    border-radius: 50%;
    animation: typingBounce 1.4s infinite ease-in-out both;
}

.typing-dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes typingBounce {
    0%, 80%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

.chat-input-container {
    padding: 20px;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    background: rgba(255, 255, 255, 0.8);
}

.chat-input-wrapper {
    display: flex;
    gap: 12px;
    align-items: flex-end;
}

.chat-input {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid #e5e7eb;
    border-radius: 24px;
    font-size: 14px;
    resize: none;
    outline: none;
    transition: all 0.2s ease;
    max-height: 100px;
    min-height: 44px;
    font-family: inherit;
}

.chat-input:focus {
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.send-button {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    font-size: 18px;
}

.send-button:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
}

.send-button:active {
    transform: scale(0.95);
}

.send-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.welcome-message {
    text-align: center;
    color: #6b7280;
    font-size: 14px;
    margin-bottom: 20px;
    opacity: 0;
    animation: fadeIn 1s ease-in-out 0.5s forwards;
}

@keyframes fadeIn {
    to { opacity: 1; }
}

.chat-toggle {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
    transition: all 0.3s ease;
    z-index: 9998;
}

.chat-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 35px rgba(99, 102, 241, 0.4);
}

.chat-toggle.hidden {
    display: none;
}

/* Mobile responsiveness */
@media (max-width: 480px) {
    .chat-widget {
        width: 100vw;
        height: 100vh;
        bottom: 0;
        right: 0;
        border-radius: 0;
    }
    
    .chat-messages {
        padding: 15px;
    }
    
    .chat-input-container {
        padding: 15px;
    }
    
    .chat-toggle {
        bottom: 15px;
        right: 15px;
        width: 55px;
        height: 55px;
        font-size: 22px;
    }
}