form {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
    border: none;
    border-radius: 4px;
    background: #1a1a1a;
    box-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

label {
    display: block;
    margin-bottom: 0.5em;
    font-weight: 600;
    text-transform: uppercase;
}

input[type="text"],
input[type="password"],
input[type="email"] {
    width: 100%;
    padding: 8px;
    margin-bottom: 1em;
    border: 1px solid #444;
    background: #222;
    border-radius: 4px;
    outline: none;
}

input[type="text"]:focus,
input[type="password"]:focus,
input[type="email"]:focus {
    box-shadow: 0 0 0 2px rgba(255,67,67,0.5);
    border-color: #ff4343;
}

button, input[type="submit"] {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 4px;
    background: linear-gradient(135deg, #ff6b6b, #c91b1b);
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, filter 0.2s ease;
}

button:hover, input[type="submit"]:hover {
    transform: translateY(-2px);
    filter: brightness(1.1);
}