body {
    font-family: 'Poppins', sans-serif;
    background-color: #e0e5ec;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.login-container {
    background: linear-gradient(145deg, #1b2a49, #14223a);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 5px 5px 15px rgba(0, 0, 0, 0.3), -5px -5px 15px rgba(255, 255, 255, 0.1);
    text-align: center;
    width: 350px;
    color: white;
}

h2 {
    color: #ffffff;
    margin-bottom: 20px;
    font-size: 22px;
}

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

label {
    font-weight: bold;
    color: #d1d1d1;
    text-align: left;
}

input {
    padding: 12px;
    border: none;
    border-radius: 8px;
    background-color: #f4f4f4;
    color: #1b2a49;
    font-size: 16px;
    box-shadow: inset 3px 3px 6px rgba(0, 0, 0, 0.2), inset -3px -3px 6px rgba(255, 255, 255, 0.1);
}

input:focus {
    outline: none;
    border: 2px solid #ffffff;
}

button {
    background: linear-gradient(145deg, #243b55, #1b2a49);
    color: white;
    border: none;
    padding: 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    transition: background 0.3s, transform 0.2s;
    box-shadow: 3px 3px 10px rgba(0, 0, 0, 0.3), -3px -3px 10px rgba(255, 255, 255, 0.1);
}

button:hover {
    background: linear-gradient(145deg, #14223a, #0f172a);
    transform: scale(1.05);
}

p.error {
    color: #ff4d4d;
    font-weight: bold;
    margin-top: 10px;
}