/*
 * Stylesheet for Dr. Samuel Dare Olusegun's research portfolio
 * Designed to be clean and professional with maritime tones.
 */

/* Reset some basic elements */
body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #ffffff;
}

/* Hero section */
.hero {
    position: relative;
    height: 300px;
    background-image: url('images/header.jpg');
    background-size: cover;
    background-position: center;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.hero .overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    padding: 0 20px;
}

.hero-content h1 {
    margin: 0;
    font-size: 2.5rem;
    font-weight: 700;
}

.hero-content p {
    margin-top: 10px;
    font-size: 1.2rem;
    font-weight: 300;
}

/* Navigation */
.navbar {
    display: flex;
    justify-content: center;
    background: #004f8b;
    padding: 10px 0;
    gap: 30px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    letter-spacing: 0.5px;
    transition: color 0.3s ease;
}

.navbar a:hover {
    color: #fed766;
}

/* Sections */
section {
    padding: 40px 20px;
    max-width: 900px;
    margin: 0 auto;
}

section h2 {
    margin-top: 0;
    color: #004f8b;
}

.research-item {
    margin-bottom: 30px;
    background: #f7f7f7;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.research-item h3 {
    margin-top: 0;
    color: #004f8b;
}

.contact ul {
    list-style: none;
    padding: 0;
}

.contact li {
    margin-bottom: 8px;
}

.contact a {
    color: #004f8b;
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact a:hover {
    text-decoration: underline;
}

/* Footer */
.footer {
    background: #004f8b;
    color: #fff;
    text-align: center;
    padding: 20px 0;
    margin-top: 40px;
    font-size: 0.9rem;
}