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

.container {
    width: 90%;
    max-width: 1100px;
    margin: auto;
}

.header {
    background: #1e88e5;
    padding: 15px 0;
    color: #fff;
}

.header a {
    color: #fff;
    text-decoration: none;
    margin-right: 15px;
}

.logo {
    display: inline-block;
    margin-right: 20px;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px,1fr));
    gap: 15px;
    margin-top: 20px;
}

.card {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    text-decoration: none;
    color: #333;
    box-shadow: 0 2px 6px rgba(0,0,0,0.08);
    transition: 0.3s;
}

.card:hover {
    transform: translateY(-5px);
}

.footer {
    margin-top: 40px;
    padding: 20px 0;
    text-align: center;
    background: #eee;
}
.form-box {
    background: #fff;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 3px 12px rgba(0,0,0,0.08);
    margin-top: 20px;
}

.form-box label {
    font-weight: bold;
    display: block;
    margin-bottom: 10px;
}

.form-box input,
.form-box select {
    width: 100%;
    padding: 10px;
    margin-bottom: 12px;
    border-radius: 6px;
    border: 1px solid #ccc;
    font-size: 15px;
}

.form-box button {
    background: #1e88e5;
    color: #fff;
    padding: 10px 18px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 15px;
}

.form-box button:hover {
    background: #1565c0;
}

.result-box {
    margin-top: 20px;
    padding: 20px;
    background: #e8f5e9;
    border-left: 5px solid #2e7d32;
    border-radius: 6px;
    font-size: 18px;
}

.content-box {
    background: #fff;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 3px 12px rgba(0,0,0,0.06);
    margin-top: 30px;
    line-height: 1.7;
}

.btn-reset {
    background: #e53935;
    color: #fff;
    border: none;
    padding: 10px 18px;
    border-radius: 6px;
    cursor: pointer;
}

.btn-reset:hover {
    background: #c62828;
}

.result-box {
    opacity: 0;
    transform: translateY(10px);
    animation: fadeInUp 0.4s ease forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.breadcrumb {
    margin: 10px 0 20px;
    font-size: 14px;
    color: #666;
}

.breadcrumb a {
    color: #1e88e5;
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.related-kalkulator {
    margin-top: 40px;
}

.grid-links {
    list-style: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 10px;
}

.grid-links li a {
    display: block;
    padding: 10px 14px;
    background: #f8f9fa;
    border-radius: 6px;
    text-decoration: none;
    font-size: 14px;
    transition: 0.2s;
}

.grid-links li a:hover {
    background: #007bff;
    color: #fff;
}