* {
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background: #eef2f7;
    margin: 0;
    padding: 35px 15px;
}

.container {
    max-width: 800px;
    margin: auto;
    padding: 35px;
    background: white;
    border-radius: 14px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    color: #243b53;
    margin-bottom: 10px;
}

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

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

label {
    color: #334155;
    font-size: 14px;
    font-weight: bold;
    margin-bottom: 8px;
}

input, select {
    width: 100%;
    padding: 12px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    font-size: 15px;
    background: white;
    outline: none;
}

input:focus, select:focus {
    border-color: #2563eb;
}

button {
    width: 100%;
    padding: 14px;
    margin-top: 25px;
    background: #2563eb;
    color: white;
    border: none;
    border-radius: 7px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
}

button:hover {
    background: #1d4ed8;
}

.result {
    margin-top: 25px;
    padding: 18px;
    background: #e0f2fe;
    color: #075985;
    text-align: center;
    border-radius: 8px;
}

.result p {
    font-size: 22px;
    font-weight: bold;
    margin-bottom: 5px;
}

.error {
    margin-top: 20px;
    color: #dc2626;
    text-align: center;
}

.disclaimer {
    margin-top: 25px;
    color: #64748b;
    font-size: 12px;
    text-align: center;
}

@media (max-width: 550px) {
    .form-grid {
        grid-template-columns: 1fr;
    }

    .container {
        padding: 22px;
    }
}