body {
    background-color: black;
    background-image: url('../images/background.jpg');
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    border: 10px solid #e53e17;
    margin: 0;
    height: calc(100vh - 20px);
    height: calc(100dvh - 20px);
}

.center-wrap {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 0 1rem;
    box-sizing: border-box;
}

.content {
    width: 100%;
    max-width: 420px;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.center-wrap img {
    width: 100%;
    height: auto;
    display: block;
}

.signup-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 50px;
    background-color: #e53e17;
    color: black;
    font-size: 18px;
    font-weight: 700;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    text-decoration: none;
    border: none;
    outline: 1px solid #000;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.12s ease, box-shadow 0.2s ease;
}

.signup-button:hover {
    background-color: #cf3415;
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.25);
}

.signup-button:active {
    transform: translateY(0);
    box-shadow: none;
}