:root {
    --primary-color: #3498db;
    --secondary-color: #2c3e50;
    --text-color: #333;
    --bg-color: #f8f9fa;
    --card-bg: #fff;
    --footer-bg: #eaeaea;
}

.dark-mode {
    --primary-color: #2980b9;
    --secondary-color: #34495e;
    --text-color: #f8f9fa;
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --footer-bg: #2c2c2c;
}

body {
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: background-color 0.3s, color 0.3s;
}

.navbar {
    background-color: var(--primary-color) !important;
}

a {
    text-decoration: none !important;
}

.card {
    background-color: var(--card-bg);
    border: none;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s, background-color 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.2);
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.section-title {
    position: relative;
    margin-bottom: 40px;
    color: var(--primary-color);
}

.section-title:after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background-color: var(--primary-color);
    margin-top: 10px;
}

#hero {
    background-image: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://www.claudeusercontent.com/api/placeholder/1920/600');
    background-size: cover;
    background-position: center;
    color: white;
    padding: 80px 0;
}

footer {
    background-color: var(--footer-bg);
}

.timeline {
    position: relative;
    padding: 20px 0;
}

.timeline-item {
    position: relative;
    padding: 20px 30px;
    border-left: 3px solid var(--primary-color);
    margin-bottom: 30px;
    background-color: var(--card-bg);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

.timeline-date {
    display: inline-block;
    padding: 5px 10px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 4px;
    margin-bottom: 10px;
}

.team-member {
    text-align: center;
    margin-bottom: 30px;
}

.team-member img {
    width: 150px;
    height: 150px;
    object-fit: cover;
    border-radius: 50%;
    margin-bottom: 15px;
}

#darkModeToggle {
    cursor: pointer;
}
.nav-link {
    color: white !important;
}