* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f3f4f6;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

header h1 {
    color: #111827;
    font-size: 2rem;
    text-align: center;
    margin-bottom: 25px;
    font-weight: 600;
}

.menu_logowania {
    background-color: #ffffff;
    padding: 30px 40px;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.menu_logowania:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.menu_logowania form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.menu_logowania label {
    font-size: 14px;
    color: #374151;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.menu_logowania input[type="text"],
.menu_logowania input[type="password"] {
    padding: 12px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 14px;
    width: 100%;
    transition: border-color 0.2s;
}

.menu_logowania input[type="text"]:focus,
.menu_logowania input[type="password"]:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.menu_logowania input[type="submit"] {
    padding: 12px;
    border: none;
    border-radius: 6px;
    background-color: #3b82f6;
    color: #ffffff;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
}

.menu_logowania input[type="submit"]:hover {
    background-color: #2563eb;
    transform: scale(1.03);
}

.menu_logowania .wynik {
    color: #ef4444;
    font-size: 14px;
    text-align: center;
    margin-top: 5px;
}

footer {
    text-align: center;
    margin-top: 30px;
    font-size: 13px;
    color: #6b7280;
}

@media (max-width: 450px) {
    .menu_logowania {
        padding: 20px;
        max-width: 90%;
    }

    header h1 {
        font-size: 1.5rem;
    }
}