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

body {
    font-family: Verdana, sans-serif;
    color: #333;
    background-color: #f4f4f4;
    line-height: 1.6;
}

/* Header */
header {
    background: #111;
    color: #fff;
    padding: 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

header .symposium-home {
    color: #fff;
    text-decoration: none;
    font-size: 0.7em;
    position: absolute;
    left: 1rem;
    top: 1.5rem;
}

header h1 {
    margin: 0;
}

section {
    margin: 10px;
}

/* Navigation Bar */

nav ul {
    list-style: none;
    background-color: #682626;
    text-align: center;
    padding: 0.5rem 0;
    margin: 0;
}

nav ul li {
    display: inline;
}

nav ul li a {
    color: white;
    padding: 0.5rem 1rem;
    text-decoration: none;
}

nav ul li a:hover {
    background-color: #555;
}

/* Main Content Area */
.container {
    width: 80%;
    margin: auto;
    overflow: hidden;
}

#main h2 {
    text-align: center;
}

#main p {
    text-align: justify;
}

#programme h2 {
    text-align: center;
}

#programme p {
    text-align: center;
}

#call p {
    text-align: justify;
}

#call ul {
    list-style: none;
    padding-left: 0;
}

#call li {
    position: relative;
    padding-left: 1.5em;
}

#call ul li:before {
    content: '✓ '; 
    position: absolute;
    left: 0;
    width: 1em;
    height: 1em;
}

#call h2 {
    text-align: center;
}

#dates p {
    text-align: center;
}

#dates h2 {
    text-align: center;
}

#submission p {
    text-align: justify;
}

#submission h2 {
    text-align: center;
}

#organisation h2 {
    text-align: center;
}

#organisation h1 {
    text-align: center;
}

#organisation p {
    text-align: center;
}

#contacts h2 {
    text-align: center;
}

#contacts p {
    text-align: center;
}

/* Footer */
footer {
    background: #333;
    color: #fff;
    text-align: center;
    padding: 1rem 0;
}

/* Responsive Design */
@media (max-width: 600px) {
    nav ul li {
        display: block;
        text-align: left;
    }

    .container {
        width: 100%;
    }

    header {
        flex-direction: column;
        text-align: center;
    }

    header .symposium-home {
        position: static;
        margin-bottom: 1rem;
    }
}