@import url('https://fonts.googleapis.com/css2?family=Segoe+UI:wght@400;500;600&display=swap');
.chatbot-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.chatbot-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    max-width: 800px;
    height: 600px;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chatbot-header {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.close-btn {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease;
}

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

.chat-messages {
    flex: 1;
    padding: 1rem;
    overflow-y: auto;
    background: #f8f9fa;
}

.message {
    max-width: 80%;
    margin-bottom: 1rem;
    padding: 0.8rem 1rem;
    border-radius: 18px;
    animation: slideIn 0.3s ease-out;
}

.user-message {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    margin-left: auto;
    border-bottom-right-radius: 5px;
}

.bot-message {
    background: white;
    border: 1px solid #e0e0e0;
    margin-right: auto;
    border-bottom-left-radius: 5px;
}

.chat-input-container {
    padding: 1rem;
    background: white;
    border-top: 1px solid #e0e0e0;
    display: flex;
    gap: 0.5rem;
}

.chat-input {
    flex: 1;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 25px;
    outline: none;
    font-size: 1rem;
}

.send-btn {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    border: none;
    border-radius: 50%;
    width: 45px;
    height: 45px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease;
}

.send-btn:hover {
    transform: scale(1.05);
}

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

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.typing-indicator {
    display: none;
    padding: 0.8rem 1rem;
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: 18px;
    border-bottom-left-radius: 5px;
    max-width: 80px;
    margin-bottom: 1rem;
}

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

.typing-dots span {
    width: 8px;
    height: 8px;
    background: #999;
    border-radius: 50%;
    animation: typing 1.4s infinite;
}

.typing-dots span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dots span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing {
    0%, 60%, 100% {
        transform: translateY(0);
    }
    30% {
        transform: translateY(-10px);
    }
}

.disclaimer {
    background: #fff3cd;
    border: 1px solid #ffeaa7;
    padding: 1rem;
    margin: 1rem;
    border-radius: 10px;
    font-size: 0.9rem;
    color: #856404;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .nav-links {
        display: none;
    }

    .chatbot-container {
        width: 95%;
        height: 90vh;
    }
}