body {
    font-family: Arial, sans-serif;
    background: #f4f6f9;
    margin: 0;
    padding: 40px;
}

.container {
    max-width: 800px;
    margin: auto;
}

h1 {
    color: #1e293b;
}

.subtitle {
    color: #64748b;
    margin-bottom: 30px;
}

.event-card {
    background: white;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.event-card h3 {
    margin-top: 0;
}

button {
    background: #2563eb;
    color: white;
    border: none;
    padding: 10px 16px;
    border-radius: 8px;
    cursor: pointer;
}

button:hover {
    background: #1d4ed8;
}

input {
    padding: 8px;
    margin-right: 8px;
    margin-top: 10px;
}

.hidden {
    display: none;
}

button {
    margin-right: 10px;
}