body {
    margin: 0;
    font-family: "Segoe UI", Arial, sans-serif;
    background-color: #f4f6f9;
    color: #333;
}

/* HEADER */
.header {
    background-color: #198754;
    color: white;
    padding: 18px;
}

.header-content {
    text-align: center;
}

.header-content h2 {
    margin: 0;
    font-weight: bold;
}

.header-content span {
    font-size: 14px;
    opacity: 0.9;
}

/* CONTAINER */
.container {
    max-width: 1100px;
    margin: auto;
    padding: 40px 20px;
}

/* HOME */
.home {
    text-align: center;
}

.title {
    font-size: 32px;
    font-weight: bold;
    margin-bottom: 5px;
}

.subtitle {
    font-size: 20px;
    color: #198754;
    margin-bottom: 20px;
}

.description {
    font-size: 16px;
    max-width: 800px;
    margin: auto;
    line-height: 1.7;
}

/* MENU BUTTON */
.menu {
    margin-top: 40px;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
}

.btn {
    padding: 14px 22px;
    border-radius: 6px;
    color: white;
    text-decoration: none;
    font-weight: 500;
    min-width: 230px;
    text-align: center;
}

.btn-green { background-color: #198754; }
.btn-blue { background-color: #0d6efd; }
.btn-yellow { background-color: #ffc107; color: #000; }
.btn-red { background-color: #dc3545; }

/* ALERT */
.alert {
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 20px;
}

.alert-success { background: #d1e7dd; color: #0f5132; }
.alert-danger { background: #f8d7da; color: #842029; }
.alert-warning { background: #fff3cd; color: #664d03; }

/* FOOTER */
.footer {
    margin-top: 80px;
    padding: 15px;
    background-color: #e9ecef;
    text-align: center;
    font-size: 14px;
    color: #555;
}