* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

#container {
    position: relative;
    width: 100%;
    height: 100%;
}

#background-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    transition: background-image 1s ease;
}

.background-1 {
    background-image: url('res/start_1.png');
}

.background-2 {
    background-image: url('res/start_2.png');
}

#qrcode {
  display: none;
  position: absolute;
  top: 60%;
  left: 50%;  
  transform: translate(-60%, -50%);
  width: 600pt;
  height: 600pt;
  background-color: #fff;
  box-shadow: 0 0 10px rgba(0,0,0,0.2);
}

#play-button {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    padding: 12px 40px;
    font-size: 18px;
    border: none;
    border-radius: 30px;
    background-color: rgba(255, 255, 255, 0.25);
    color: white;
    backdrop-filter: blur(5px);
    cursor: pointer;
    transition: opacity 0.6s ease, transform 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    font-weight: bold;
    letter-spacing: 2px;
}

#play-button:hover {
    transform: translateX(-50%) scale(1.05);
    background-color: rgba(255, 255, 255, 0.35);
}

#play-button.hidden {
    opacity: 0;
    pointer-events: none;
}

#ceremony-video {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 100;
}