body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    margin: 0;
    background-color: #bae8e8;
}

header,
nav,
aside,
main,
footer {
    padding: 5px;
    border: 1px solid #0f6db5;
}

header {
    background-color: #bae8e8;
    text-align: center;
    border-bottom: none;
}

nav {
    background-color: #bae8e8;
    text-align: center;
    border-right: 2px solid #0f6db5;
}

aside {
    background-color: #bae8e8;
    width: 200px;
    flex-shrink: 0;
    padding: 10px;
    border-top: none;
}

footer {
    border-color: #0f6db5;
    border-top: 1px solid;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

main {
    flex-grow: 1;
    background-color: #bae8e8;
    padding: 20px;
    font-family: 'Open Sans', Arial, sans-serif;
    font-size: 18px;
    line-height: 1.6;
    color: #333;
    border-radius: 1px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    overflow: auto;
    margin-left: 221px;
    margin-top: -39px;
    border-bottom: none;
    border-top: none;
}

.overlay {
    text-align: center;
    background-color: #faf3f3;
    font-weight: bold;
}

main h1,
main h2 {
    color: #0f6db5;
    margin-bottom: 15px;
    font-size: 25px
}

main,
p,
h1,
h2,
li {
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
    color: inherit;
}

main p {
    font-size: 20px;
    margin-bottom: 15px;
    text-align: justify;
}

h2 {
    text-align: left;
}

.TitleHeader {
    font-family: 'Arial', sans-serif;
    font-size: 2.5em;
    color: #000000;
    text-align: center;
    background-color: #bae8e8;
    border: 2px #000000;
    border-radius: 2px;
    padding: 2px;
    letter-spacing: 40px;
}


@media (max-width: 768px) {
    .TitleHeader {
        font-size: 2em;
        letter-spacing: 15px;
    }

    body {
        display: flex;
        flex-direction: column;
    }

    header {
        order: 1;
    }

    nav {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        align-items: center;
        order: 2;
        gap: 5px;
        padding: 10px;
    }

    nav button {
        flex: 1 1 calc(20% - 10px);
        margin: 5px;
        max-width: 120px;
        font-size: 12px;
        padding: 5px;
        border: none;
        border-radius: 5px;
        background-color: #0f6db5;
        color: white;
        cursor: pointer;
        transition: all 0.3s ease;
    }

    nav button:hover {
        background-color: #074f85;
        transform: scale(1.05);
    }

    aside {
        display: flex;
        flex-wrap: wrap;
        justify-content: left;
        align-items: center;
        order: 3;
        width: 100%;
        padding: 10px;
        border: none;
    }

    .wrapper {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        justify-content: center;
        align-items: center;
        width: 100%;
    }

    aside button {
        font-family: 'Arial', sans-serif;
        font-weight: bold;
        text-align: center;
        padding: 6px 8px;
        letter-spacing: 0.5px;
        font-size: 12px;
        flex: 1 1 auto;
        width: 80px;
        height: 30px;
        margin: 5px;
        border: none;
        border-radius: 5px;
        background-color: #0f6db5;
        color: rgb(0, 0, 0);
        cursor: pointer;
        transition: all 0.3s ease;
    }

    main {
        order: 4;
        margin: 0;
        width: 100%;
        font-size: 14px;
        line-height: 1.4;
        padding: 10px;
    }

    main h1,
    main h2 {
        font-size: 18px;
        margin-bottom: 10px;
    }

    main p {
        font-size: 14px;
        margin-bottom: 10px;
        text-align: justify;
    }

    footer {
        order: 5;
        padding: 1px 0;
        text-align: center;
    }

    main table {
        font-size: 14px;
    }

    main table th,
    main table td {
        padding: 6px;
        font-size: 12px;
    }

    h1 {
        text-align: left;
    }
}

@media (max-width: 480px) {
    .TitleHeader {
        font-size: 1.5em;
        letter-spacing: 10px;
    }

    nav {
        flex-wrap: wrap;
        gap: 3px;
    }

    nav button {
        flex: 1 1 calc(30% - 5px);
        font-size: 10px;
        padding: 4px;
    }

    .wrapper {
        gap: 3px;
    }

    aside button {
        font-family: 'Arial', sans-serif;
        font-weight: bold;
        text-align: center;
        padding: 4px 6px;
        letter-spacing: 0.3px;
        font-size: 10px;
        width: 60px;
        height: 25px;
    }

    main {
        font-size: 12px;
        line-height: 1.3;
        padding: 8px;
        width: 100%;
    }

    main h1,
    main h2 {
        font-size: 16px;
        margin-bottom: 8px;
    }

    main p {
        font-size: 12px;
        margin-bottom: 8px;
    }

    footer {
        font-size: 14px;
    }

    main table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }

    main table th,
    main table td {
        padding: 5px;
        font-size: 11px;
    }
}

main table {
    width: 200%;
    border-collapse: collapse;
    margin: 10px 0;
    font-size: 16px;
    text-align: left;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* borders twn pinakwn */
main table th,
main table td {
    padding: 12px 15px;
    border: 1px solid #0f6db5;
}

/* headers twn pinakwn me links/exhibitions */
main table th {
    background-color: #0f6db5;
    color: #ffffff;
    font-size: 18px;
    text-align: center;
}

/* GIA TO LOGIN FORM APO MANAGEMENT - MAIN */
.login-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    padding: 20px;
    border: 1px solid #0f6db5;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.login-container label,
.login-container input {
    width: 100%;
    max-width: 400px;
    margin-bottom: 15px;
}

input[type="text"],
input[type="password"] {
    padding: 10px;
    font-size: 16px;
    border: 1px solid #0f6db5;
    border-radius: 5px;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

input[type="text"]:focus,
input[type="password"]:focus {
    border-color: #0f6db5;
    outline: none;
    box-shadow: 0 0 5px rgba(15, 109, 181, 0.5);
}

input[type="button"] {
    padding: 10px 20px;
    font-size: 16px;
    border: none;
    border-radius: 5px;
    background-color: #0f6db5;
    cursor: pointer;
    transition: transform 0.2s, background-color 0.2s;
}

input[type="button"]:hover {
    transform: scale(1.1);
    background-color: #0f6db5;
}