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

body {
    font-family: sans-serif;
    background: linear-gradient(135deg, #000000 0%, #303030 100%);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.chat-container {
    width: 90%;
    max-width: 600px;
    height: 80vh;
    background: #242424;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat-header {
    background: linear-gradient(135deg, #6b6b6b, #525252);
    color: white;
    padding: 20px;
    text-align: center;
}

.chat-header h1 {
    font-size: 2em;
    margin-bottom: 5px;
}

.chat-header p {
    opacity: 0.9;
    font-size: 0.9em;
}

.chat-messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    background: #363636;
}

.message {
    margin-bottom: 15px;
    display: flex;
    animation: slideIn 0.3s ease-out;
}

.bot-message {
    justify-content: flex-start;
}

.user-message {
    justify-content: flex-end;
}

.message-content {
    max-width: 80%;
    padding: 12px 16px;
    border-radius: 18px;
    font-size: 14px;
    line-height: 1.4;
}

.bot-message .message-content {
    background: #737373;
    color: #ffffff;
    border-bottom-left-radius: 6px;
}

.user-message .message-content {
    background: #ffffff;
    color: #737373;
    border-bottom-right-radius: 6px;
}

.chat-input-container {
    padding: 20px;
    background: white;
    display: flex;
    gap: 10px;
    border-top: 1px solid #eee;
}

#userInput {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 25px;
    font-size: 14px;
    outline: none;
    transition: border-color 0.3s;
}

#userInput:focus {
    border-color: #4ecdc4;
}

#sendButton {
    padding: 12px 24px;
    background: linear-gradient(135deg, #ff6b6b, #4ecdc4);
    color: white;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    font-weight: bold;
    transition: transform 0.2s;
}

#sendButton:hover {
    transform: translateY(-2px);
}

#sendButton:active {
    transform: translateY(0);
}

.typing-indicator {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    background: #e3f2fd;
    border-radius: 18px;
    border-bottom-left-radius: 6px;
    max-width: 80px;
}

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

.typing-dots span {
    width: 8px;
    height: 8px;
    background: #1565c0;
    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 slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes typing {
    0%, 60%, 100% {
        transform: translateY(0);
        opacity: 0.3;
    }
    30% {
        transform: translateY(-10px);
        opacity: 1;
    }
}

/* Scrollbar styling */
.chat-messages::-webkit-scrollbar {
    width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
    background: #f1f1f1;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

.chat-footer {
    padding: 20px;
    background: white;
    display: flex;
    gap: 10px;
    border-top: 1px solid #eee;
}