* {
    box-sizing: border-box;
}

body {
    background: #f5efe7;
    font-family: Arial, sans-serif;
    min-height: 100vh;

    display: flex;
    justify-content: center;
    align-items: center;
}

.card {
    width: 420px;
    background: #ffffff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

h2 {
    text-align: center;
    color: #5c4033;
    margin-bottom: 20px;
}

label {
    font-weight: bold;
    color: #333;
}

input, select {
    width: 100%;
    padding: 10px;
    margin-top: 6px;
    margin-bottom: 15px;
    border-radius: 6px;
    border: 1px solid #ccc;
}

.btn {
    width: 100%;
    padding: 10px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
}

.btn-show {
    background: #8d6e63;
    color: white;
    margin-bottom: 10px;
}

.btn-register {
    background: #1e88e5;
    color: white;
}

.login-link {
    text-align: center;
    margin-top: 15px;
}

.login-link a {
    color: #1e88e5;
    text-decoration: none;
    font-weight: bold;
}

.error {
    background: #ffebee;
    padding: 10px;
    border-radius: 6px;
    color: #c62828;
    margin-bottom: 15px;
}