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

body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    padding: 10px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header {
    width: 100%;
    height: 120px;
    overflow: hidden;
    background-color: #ddd;
}

.header img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

h1 {
    text-align: center;
    padding: 20px;
    font-size: 24px;
    color: #333;
}

.buy-link {
    display: block;
    text-align: center;
    margin: 0 20px 20px;
}

.buy-link img {
    max-width: 100%;
    height: auto;
    cursor: pointer;
    transition: opacity 0.3s;
}

.buy-link img:hover {
    opacity: 0.8;
}

.chat-window {
    height: 400px;
    overflow-y: auto;
    padding: 15px;
    margin: 0 20px;
    background-color: #fafafa;
    border: 1px solid #ddd;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
}

.message {
    margin-bottom: 12px;
    padding: 8px 12px;
    background-color: white;
    border-radius: 6px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
    animation: fadeIn 0.3s;
}

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

.message-nick {
    font-weight: bold;
    color: #0066cc;
    margin-right: 8px;
}

.message-text {
    color: #333;
    word-wrap: break-word;
}

.input-container {
    display: flex;
    gap: 10px;
    padding: 20px;
    background-color: #f9f9f9;
}

#nickInput {
    flex: 0 0 120px;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
}

#messageInput {
    flex: 1;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
}

#sendButton {
    flex: 0 0 50px;
    background-color: #0066cc;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s;
}

#sendButton:hover {
    background-color: #0052a3;
}

#sendButton:active {
    transform: scale(0.95);
}

input:focus {
    outline: none;
    border-color: #0066cc;
}

/* Адаптивность для планшетов */
@media (max-width: 768px) {
    h1 {
        font-size: 20px;
        padding: 15px;
    }

    .chat-window {
        height: 350px;
        margin: 0 15px;
    }

    #nickInput {
        flex: 0 0 100px;
    }

    .input-container {
        padding: 15px;
    }
}

/* Адаптивность для мобильных */
@media (max-width: 480px) {
    body {
        padding: 5px;
    }

    .header {
        height: 80px;
    }

    h1 {
        font-size: 18px;
        padding: 10px;
    }

    .chat-window {
        height: 300px;
        margin: 0 10px;
        padding: 10px;
    }

    .message {
        margin-bottom: 10px;
        padding: 6px 10px;
    }

    #nickInput {
        flex: 0 0 80px;
        font-size: 13px;
        padding: 8px;
    }

    #messageInput {
        font-size: 13px;
        padding: 8px;
    }

    #sendButton {
        flex: 0 0 45px;
    }

    .input-container {
        padding: 10px;
        gap: 8px;
    }
}