body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: #f0f2f5;
    margin: 0;
}

.login-card {
    background: white;
    padding: 2.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    width: 100%;
    max-width: 360px;
    box-sizing: border-box;
}

.login-card h2 {
    margin-top: 0;
    margin-bottom: 1.5rem;
    color: #333;
    font-size: 24px;
    font-weight: 700;
    text-align: center;
}

.error-message {
    background-color: #ffeef0;
    color: #ea4e5c;
    padding: 10px;
    border-radius: 4px;
    font-size: 13px;
    margin-bottom: 1rem;
    border: 1px solid rgba(234, 78, 92, 0.2);
    text-align: center;
}

input {
    display: block;
    width: 100%;
    margin-bottom: 1.2rem;
    padding: 0.75rem;
    border: 1px solid rgba(55, 53, 47, 0.16);
    border-radius: 4px;
    font-size: 14px;
    box-sizing: border-box;
    transition: border-color 0.2s;
}

input:focus {
    outline: none;
    border-color: #007bff;
}

button {
    width: 100%;
    padding: 0.75rem;
    background: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 15px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.2s;
}

button:hover {
    background: #0056b3;
}