/* Full Page Setup */
body {
    margin: 0;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: black;
}

/* Stage */
.stage {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

/* Website Background (Initially Hidden) */
.background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    z-index: -1;
    opacity: 0; /* Initially Hidden */
    transition: opacity 1s ease-in-out;
}

/* Curtains (Smooth Animation) */
.curtain {
    position: absolute;
    top: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(to bottom, #b22222, #8b0000);
    box-shadow: inset 0 0 40px rgba(0, 0, 0, 0.8);
    transition: transform 1.5s ease-in-out;
    background-image: url('https://cdn.pixabay.com/photo/2017/01/31/21/23/theatre-2028759_1280.jpg');
    background-size: cover;
    background-repeat: no-repeat;
}

.left {
    left: 0;
    transform: translateX(0);
    border-right: 5px solid gold;
}

.right {
    right: 0;
    transform: translateX(0);
    border-left: 5px solid gold;
}

/* Golden Door Knob */
.door-knob {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: radial-gradient(circle, gold, #daa520);
    border: 4px solid #c99900;
    border-radius: 50%;
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.8);
    cursor: pointer;
    transition: transform 0.2s ease-in-out;
}

.door-knob:hover {
    transform: translate(-50%, -50%) scale(1.1);
}