body {
    font-family: 'Cairo', sans-serif;
    margin: 0;
    background: #F9F5FF;
    /* Even lighter shade of purple */
    color: #111;
    line-height: 2.0;
}

header {
    background: #455a64;
    /* Elegant dark header */
    color: white;
    padding: 20px;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

header img {
    height: 90px;
    /* Bigger logo */
    background: white;
    /* White background behind logo */
    padding: 8px;
    border-radius: 8px;
}

header h1 {
    margin: 0;
    font-size: 28px;
}

header h2 {
    margin: 8px 0 0;
    font-size: 20px;
    font-weight: 400;
}

main {
    max-width: 900px;
    margin: 30px auto;
    padding: 20px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

section {
    margin-bottom: 30px;
}

h3 {
    color: #222;
    margin-bottom: 10px;
    font-weight: 700;
    font-size: 22px;
}

.keywords span {
    display: inline-block;
    background: #cfd8dc;
    /* Light blue */
    color: #111;
    /* Dark text for readability */
    margin: 4px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 16px;
}

.info {
    background: #ffffffff;
    padding: 10px;
    border-radius: 8px;
    margin-bottom: 15px;
    text-align: right;
}

.info p {
    margin: 5px 0;
    font-size: 20px;
    font-weight: 600;
}

nav {
    background: #cfd8dc;
    /* Lighter Purple */
    padding: 15px;
    border-radius: 8px;
    margin-top: 20px;
}

nav a {
    display: block;
    color: #222;
    /* Dark text for contrast */
    text-decoration: none;
    margin: 8px 0;
    font-weight: 600;
    background: white;
    padding: 10px;
    border-radius: 6px;
    transition: all 0.3s ease;
    text-align: center;
    font-size: 18px;
    shape-margin: 100%;
}

nav a:hover {
    background: #455a64;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

footer {
    text-align: center;
    padding: 20px;
    font-size: 14px;
    color: #444;
}

.abstract {
    font-size: 18px;
    text-align: justify;
    text-justify: inter-word;
    padding-left: 20px;
    padding-right: 20px;
}

.ttitle {
    text-align: center;
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 10px;
}

.tsubtitle {
    margin-top: 0px;
    padding-top: 0px;
    text-align: center;
    font-size: 20px;
    font-weight: bold;
}

.title-component {
    background: #cfd8dc;
    padding: 5px;
    border-radius: 8px;
    margin-bottom: 15px;
    margin-left: 50px;
    margin-right: 50px;
}

/* Mobile Responsive Styles */
@media screen and (max-width: 768px) {
    header {
        flex-direction: column;
        gap: 10px;
        padding: 15px 10px;
    }

    header img {
        height: 70px;
    }

    header h1 {
        font-size: 22px;
        text-align: center;
    }

    header h2 {
        font-size: 16px;
        text-align: center;
    }

    main {
        margin: 15px 10px;
        padding: 15px;
        border-radius: 8px;
    }

    h3 {
        font-size: 20px;
    }

    .abstract {
        font-size: 16px;
        padding-left: 10px;
        padding-right: 10px;
    }

    .ttitle {
        font-size: 20px;
        padding: 0 10px;
    }

    .tsubtitle {
        font-size: 18px;
        padding: 0 10px;
    }

    .title-component {
        margin-left: 10px;
        margin-right: 10px;
        padding: 10px;
    }

    .info p {
        font-size: 18px;
    }

    .keywords span {
        font-size: 14px;
        margin: 2px;
        padding: 4px 8px;
    }

    nav a {
        font-size: 16px;
        padding: 12px;
        margin: 6px 0;
    }

    footer {
        padding: 15px 10px;
        font-size: 12px;
    }
}

/* Small Mobile Devices */
@media screen and (max-width: 480px) {
    header {
        padding: 10px 5px;
    }

    header img {
        height: 60px;
    }

    header h1 {
        font-size: 18px;
        line-height: 1.3;
    }

    header h2 {
        font-size: 14px;
    }

    main {
        margin: 10px 5px;
        padding: 10px;
    }

    h3 {
        font-size: 18px;
    }

    .abstract {
        font-size: 15px;
        padding-left: 5px;
        padding-right: 5px;
        line-height: 1.8;
    }

    .ttitle {
        font-size: 18px;
        padding: 0 5px;
    }

    .tsubtitle {
        font-size: 16px;
        padding: 0 5px;
    }

    .title-component {
        margin-left: 5px;
        margin-right: 5px;
    }

    .info p {
        font-size: 16px;
    }

    .keywords span {
        font-size: 13px;
        padding: 3px 6px;
    }

    nav a {
        font-size: 15px;
        padding: 10px;
    }

    nav {
        padding: 10px;
    }

    footer {
        font-size: 11px;
    }
}