body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: #121212; /* Dark background, not pure black for a slightly softer look */
    color: #e0e0e0; /* Light text color for any text directly on body */
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    background-color: #1e1e1e; /* Darker container for a sleek look */
    padding: 30px 40px;
    border-radius: 10px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5); /* Adjusted shadow for dark theme */
    width: 100%;
    max-width: 500px;
}

.logo-container {
    text-align: center;
    margin-bottom: 25px;
}

.logo-container img {
    width: 90%;
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto 15px;
}

.logo-separator {
    border: none;
    height: 1px;
    background-color: #444; /* Darker separator for dark theme */
    margin-top: 0;
}

h1 {
    text-align: center;
    color: #ffffff; /* White title for contrast on dark container */
    margin-bottom: 25px;
    font-size: 24px;
}

label {
    display: block;
    margin-bottom: 8px;
    color: #bbbbbb; /* Lighter gray for labels on dark container */
    font-weight: 500;
}

input[type="text"],
input[type="email"],
textarea {
    width: calc(100% - 22px); /* Adjusted for padding + border */
    padding: 12px;
    margin-bottom: 20px;
    border: 1px solid #555; /* Darker border */
    border-radius: 5px;
    box-sizing: border-box;
    font-size: 16px;
    background-color: #2c2c2c; /* Dark input background */
    color: #e0e0e0; /* Light text in inputs */
}

input[type="text"]::placeholder,
input[type="email"]::placeholder,
textarea::placeholder {
    color: #777; /* Placeholder text color */
}

textarea {
    resize: vertical;
}

fieldset {
    border: 1px solid #555; /* Darker border for fieldset */
    border-radius: 5px;
    padding: 15px;
    margin-bottom: 20px;
}

legend {
    padding: 0 10px;
    font-weight: 500;
    color: #bbbbbb; /* Lighter gray for legend */
}

fieldset div {
    margin-bottom: 10px;
}

fieldset div:last-child {
    margin-bottom: 0;
}

input[type="checkbox"] {
    margin-right: 8px;
    vertical-align: middle;
    accent-color: #007bff; /* Modern way to color checkboxes, can be changed */
}

fieldset div label {
    display: inline;
    margin-bottom: 0;
    font-weight: normal;
    color: #bbbbbb; /* Ensure checkbox labels are also light gray */
}

button[type="submit"] {
    background-color: #000000; /* Black button */
    color: white;
    padding: 12px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    display: block;
    width: 100%;
    transition: background-color 0.3s ease, transform 0.1s ease;
}

button[type="submit"]:hover {
    background-color: #222222; /* Slightly lighter black on hover */
}

button[type="submit"]:active {
    transform: scale(0.98);
}

/* Responsive adjustments */
@media (max-width: 600px) {
    .container {
        margin: 20px;
        padding: 20px;
    }

    h1 {
        font-size: 20px;
    }
}