/* --- BASIS & LAYOUT --- */
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: #ececec;
}

.viewer-box {
    position: relative;
    width: 100%;
    max-width: 1200px;
    height: 800px;
    margin: 20px auto;
    background-color: #f5f5f7;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.5);
}

#wrapper-2 {
    width: 100%;
    height: 100%;
    position: relative;
    box-shadow: inset 0 0 40px rgba(0, 0, 0, 0.03);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* --- UI LAYER --- */
.ui-layer { 
    position: absolute; 
    bottom: 30px; 
    left: 50%; 
    transform: translateX(-50%);
    width: 80%; 
    max-width: 800px;
    background: rgba(255, 255, 255, 0.75);
    padding: 24px; /* Etwas mehr Padding, da Text oben fehlt */
    border-radius: 20px; 
    backdrop-filter: blur(15px); 
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.4);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    z-index: 10;
}

/* --- SLIDER CONTAINER --- */
.slider-container {
    position: relative;
    width: 100%;
    display: flex;
    align-items: center;
}

/* Mittellinie entfernt, da Slider jetzt linear von 0 startet */

/* --- DER SLIDER (RANGE INPUT) --- */
#slider-2 {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 3px;
    outline: none;
    cursor: pointer;
    position: relative;
    z-index: 2;
    background: rgba(0, 0, 0, 0.1); /* Schlichter grauer Hintergrund */
    transition: all 0.2s ease;
}

/* Knopf (Chrome, Safari, Edge) */
#slider-2::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #ffffff;
    border: 1px solid rgba(0, 0, 0, 0.1);
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.15);
    cursor: pointer;
    transition: transform 0.2s cubic-bezier(0.2, 0, 0.2, 1);
}

#slider-2::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* Knopf (Firefox) */
#slider-2::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border: none;
    border-radius: 50%;
    background: #ffffff;
    border: 1px solid rgba(0, 0, 0, 0.1);
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.15);
    cursor: pointer;
}

/* --- FULLSCREEN BUTTON --- */
#fullscreen-btn {
    position: absolute; 
    top: 20px; 
    right: 20px;
    background: rgba(255, 255, 255, 0.8); 
    border: 1px solid rgba(0, 0, 0, 0.05);
    color: #1d1d1f;
    padding: 10px 16px; 
    border-radius: 10px; 
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    backdrop-filter: blur(8px);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 10;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

#fullscreen-btn:hover { 
    background: #ffffff;
    transform: scale(1.05);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}