body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #000;
    color: #fff;
    padding: 10px 20px;
    height: 60px;
    flex-shrink: 0;
}

.logo {
    height: 40px;
}

.user-info {
    display: flex;
    align-items: center;
}

.user-info span {
    margin-right: 10px;
}

.logout-btn {
    background-color: #d32f2f;
    color: #fff;
    border: none;
    padding: 5px 10px;
    cursor: pointer;
    border-radius: 3px;
}

.container {
    flex: 1;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: calc(100vh - 60px);
    background-color: #f4f4f4;
}

.mess-title {
    flex-shrink: 0;
    background-color: #fff;
    padding: 15px;
    border-radius: 0 0 10px 10px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    text-align: center;
    margin-bottom: 0;
}

.mess-title h2 {
    margin: 0;
    font-size: 18px;
}

.centered-content {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 10px;
}

.message-box {
    background-color: #fff;
    padding: 15px;
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    margin-bottom: 0;
}

#input-form input {
    width: 100%;
    padding: 12px;
    margin: 10px 0;
    border: 1px solid #ddd;
    border-radius: 5px;
    box-sizing: border-box;
    font-size: 16px;
}

#input-form button {
    width: 100%;
    padding: 12px;
    background-color: #000;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
}

#allocation-message {
    font-size: 14px;
    line-height: 1.3;
    border-bottom: 1px solid #000;
    padding-bottom: 10px;
    margin-top: 10px;
    word-wrap: break-word;
    hyphens: auto;
}

.footer {
    flex-shrink: 0;
    text-align: center;
    padding: 10px;
    background-color: #fff;
    border-radius: 10px 10px 0 0;
    box-shadow: 0 -2px 5px rgba(0, 0, 0, 0.1);
    margin: 0;
    width: 100%;
}

.footer p {
    margin: 0;
    font-size: 14px;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .user-info {
        display: none;
    }

    .logo {
        height: 35px;
    }

    header {
        padding: 10px;
    }

    main {
        height: calc(100vh - 50px); /* Adjust for smaller header on mobile */
    }

    .mess-title {
        padding: 10px;
        font-size: 16px;
    }

    .centered-content {
        padding: 5px;
    }

    .message-box {
        padding: 15px;
        margin: 0;
    }

    .footer {
        padding: 10px;
        border-radius: 10px 10px 0 0;
    }

    #allocation-message {
        font-size: 20px;
        text-align: center;
        line-height: 1.2;
        font-weight: bold;
        font-family: sans-serif;

    }
}