:root {
    --primary-blue: #002D72; 
    --accent-red: #BA0C2F;    
    --field-green: #2ecc71;
    --light-gray: #f4f7f6;
    --dark-text: #333;
    --white: #ffffff;
}

body {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--light-gray);
    color: var(--dark-text);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 40px 20px;
    margin: 0;
}

h2 {
    color: var(--primary-blue);
    text-transform: uppercase;
    letter-spacing: 1px;
    border-bottom: 4px solid var(--accent-red);
    padding-bottom: 10px;
    margin-bottom: 30px;
}

form {
    background: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 500px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
}

form p {
    margin: 0;
    display: flex;
    flex-direction: column;
    font-weight: bold;
    color: #555;
    font-size: 0.9rem;
    text-transform: uppercase;
}

input[type="text"],
input[type="number"] {
    margin-top: 5px;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

input[type="text"]:focus,
input[type="number"]:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 5px rgba(0, 45, 114, 0.2);
}

input[type="submit"] {
    background-color: var(--primary-blue);
    color: white;
    border: none;
    padding: 15px;
    font-size: 1.1rem;
    font-weight: bold;
    border-radius: 4px;
    cursor: pointer;
    text-transform: uppercase;
    transition: background 0.3s ease;
    margin-top: 10px;
}

input[type="submit"]:hover {
    background-color: #001A44;
}

a {
    margin-top: 20px;
    text-decoration: none;
    color: var(--primary-blue);
    font-weight: 600;
    transition: color 0.2s;
}

a:hover {
    color: var(--accent-red);
}

h3 {
    color: var(--field-green);
    background: #e8f8f0;
    padding: 15px;
    border-radius: 4px;
    border-left: 5px solid var(--field-green);
}

.error {
    color: var(--accent-red);
    background: #fdf2f2;
    padding: 10px;
    border-radius: 4px;
    border-left: 5px solid var(--accent-red);
    list-style: none;
}