body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    background-color: #eef1f5; /* Light grayish blue background */
    color: #333;
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 960px;
    margin: 20px auto;
    background-color: #ffffff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

header {
    text-align: center;
    padding-bottom: 20px;
    border-bottom: 1px solid #dde3ea;
    margin-bottom: 25px;
}

header h1 {
    color: #005a9c; /* A deep, trustworthy blue */
    font-size: 2.2em;
    margin: 0;
}

main {
    text-align: center;
    flex-grow: 1;
}

main p {
    font-size: 1.1em;
    color: #555;
    margin-bottom: 20px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.action-button {
    background-color: #007acc; /* A vibrant, actionable blue */
    color: white;
    border: none;
    padding: 14px 28px;
    font-size: 1.1em;
    font-weight: bold;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.25s ease-in-out, transform 0.15s ease;
    text-decoration: none; /* In case it's an <a> tag styled as button */
    display: inline-block; /* For proper padding and margin */
}

.action-button:hover {
    background-color: #005a9c; /* Darker shade on hover */
    transform: translateY(-2px);
}

.action-button:active {
    background-color: #004375; /* Even darker on click */
    transform: translateY(0);
}

footer {
    text-align: center;
    padding-top: 20px;
    margin-top: 30px;
    border-top: 1px solid #dde3ea;
    font-size: 0.9em;
    color: #777;
}