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

body {
    font-family: Arial, sans-serif;
    background-color: #fff;
    margin: 0;
    padding: 0;
}
header, footer {
    background-color: #00695c;
    color: white;
    padding: 1rem;
    text-align: center;
}
nav a {
    margin-left: 1.5rem;
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
}
.container {
    padding: 2rem;
    max-width: 1100px;
    margin: 0 auto;
}
h1 {
    text-align: center;
    margin-bottom: 2rem;
    color: #333;
}
.filters {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 2rem;
}
.filters select, .filters input[type="date"] {
    padding: 0.5rem;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-size: 1rem;
}
.timeline {
    border-left: 3px solid #00695c;
    margin-left: 20px;
    padding-left: 20px;
    position: relative;
}
.event {
    position: relative;
    margin-bottom: 2rem;
}
.event::before {
    content: '';
    position: absolute;
    left: -31px;
    top: 10px;
    width: 20px;
    height: 20px;
    background-color: #00695c;
    border-radius: 50%;
}
.event h3 {
    margin-top: 0;
    color: #00695c;
}
.event .date {
    font-weight: bold;
    color: #444;
}
.event img {
    max-width: 100%;
    border-radius: 8px;
    margin-top: 1rem;
}
.event p {
    color: #555;
}