* {
    box-sizing: border-box;
}

body {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background: #f0f2f5;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

form {
    background: white;
    padding: 2rem 3rem;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
}

h1 {
    text-align: center;
    margin-top: 0;
    margin-bottom: 1.5rem;
    color: #333;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #555;
}

p.password-hint {
    font-weight: 600;
    display: block;
    padding: 0;
    margin-top: -10px;
}

input[type="text"],
input[type="email"],
input[type="password"] {
    width: 100%;
    padding: 0.6rem 0.8rem;
    margin-bottom: 1.2rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus {
    border-color: #007bff;
    outline: none;
    box-shadow: 0 0 5px rgba(0, 123, 255, 0.5);
}

button {
    width: 100%;
    padding: 0.75rem;
    background-color: #007bff;
    border: none;
    border-radius: 4px;
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #0056b3;
}

a {
    display: inline-block;
    margin-bottom: 1.2rem;
    color: #007bff;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

a:hover {
    color: #0056b3;
    text-decoration: underline;
}

.error-message {
    background-color: #ffe6e6;
    border: 1px solid #ff4d4d;
    color: #b30000;
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
    border-radius: 4px;
    font-weight: 600;
    text-align: center;
}