/* Fullscreen achtergrond */
body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    background: url('background.png') no-repeat center center fixed;
    background-size: cover;
    position: relative;
    color: white;
}

body::before {
    content: "";
    position: fixed;
    top:0; left:0;
    width:100%; height:100%;
    background: rgba(0,0,0,0.6);
    z-index:0;
}

/* HOME knop rechtsboven */
#homeBtn {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: #006eff;
    color: rgb(255, 255, 255);
    padding: 10px 20px;
    font-size: 16px;
    border-radius: 30px;
    text-decoration: none;
    box-shadow: 0 3px 8px rgba(0,0,0,0.3);
    transition: transform 0.2s, background-color 0.2s;
}

#homeBtn:hover {
    background-color: #003c8b;
    transform: scale(1.05);
}

/* UI Corner */
#uiCorner {
    background: rgba(20, 20, 20, 0.863);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    box-shadow: 0 8px 20px rgba(0,0,0,0.3);
    z-index: 2;
}

/* Startknop */
#startBtn {
    background-color: #006eff;
    color: white;
    border: none;
    padding: 15px 40px;
    font-size: 20px;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    transition: transform 0.2s, background-color 0.2s;
}

#startBtn:hover {
    background-color: #003c8b;
    transform: scale(1.05);
    
}

/* Knoppen en sliders */
button, input[type=range] {
    margin: 10px;
    font-size: 16px;
    
}

/* Progress bar container onderaan */
#progressContainer {
    position: fixed;
    bottom: 30px;
    left: 10%;
    width: 80%;
    height: 20px;
    background: transparent;
}

/* Progress line (dunne wit) */
#progressLine {
    position: relative;
    width: 100%;
    height: 4px;
    background: white;
    border-radius: 2px;
}

/* Progress fill (rood) */
#progressFill {
    height: 100%;
    background: #006eff;
    width: 0%;
    border-radius: 2px;
    position: absolute;
    top: 0;
    left: 0;
}

/* Marker cirkels */
.marker {
    position: absolute;
    top: 50%;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: white;
    transform: translate(-50%, -50%);
    border: 2px solid #555;
}

/* Marker actief */
.marker.active {
    background: #006eff;
    border-color: #006eff;
}