body {
    font-family: "Segoe UI", sans-serif;
    background: #f4f6f9;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    background: #fff;
    padding: 2em;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
}

h2 {
    text-align: center;
    margin-bottom: 1em;
}

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

label {
    margin-top: 10px;
    font-weight: 600;
}

input {
    padding: 10px;
    margin-top: 5px;
    border: 1px solid #ccc;
    border-radius: 8px;
}

button {
    margin-top: 20px;
    padding: 12px;
    background: #007bff;
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1em;
    transition: background 0.3s ease;
}

button:hover {
    background: #0056b3;
}

.error {
    background: #ffe6e6;
    border: 1px solid #ff4d4d;
    color: #cc0000;
    padding: 10px;
    border-radius: 8px;
    margin-bottom: 1em;
}

.register-link {
    text-align: center;
    margin-top: 15px;
    font-size: 0.9em;
}

.register-link a {
    color: #007bff;
    text-decoration: none;
    font-weight: 600;
}

.register-link a:hover {
    text-decoration: underline;
}