/* Global Styles */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f4f7f6;
    color: #333;
}

/* Header Banner */
header {
    background-color: #2c3e50;
    color: #fff;
    text-align: center;
    padding: 3rem 1rem;
}

header h1 {
    margin: 0;
    font-size: 2.5rem;
}

/* Layout Container */
.container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 1rem;
}

/* Content Cards */
.card {
    background: #fff;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

/* Footer */
footer {
    text-align: center;
    padding: 1.5rem;
    background-color: #2c3e50;
    color: #fff;
    margin-top: 3rem;
}