body { 
    margin: 0; 
    overflow: hidden; 
    background-color: #000000; /* Pure Black */
    font-family: 'Inter', sans-serif; 
}

#canvas-container { 
    position: absolute; 
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%; 
    z-index: 1; 
}

#video-input { 
    position: absolute; 
    top: 0; 
    left: 0; 
    opacity: 0; 
    pointer-events: none; 
    z-index: -1; 
}

/* Glassmorphism UI */
.glass-panel {
    background: rgba(20, 20, 20, 0.6);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.btn-option { 
    transition: all 0.3s ease; 
    flex-shrink: 0; 
}

.btn-option:hover { 
    background: rgba(255, 255, 255, 0.1); 
    transform: translateY(-2px); 
}

.btn-option.active {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.1);
}

#loading-screen { 
    z-index: 50; 
    background: #000; 
}

/* Input Focus */
input:focus { 
    outline: none; 
    border-color: #ff3366; 
}

/* Custom Scrollbar */
::-webkit-scrollbar { 
    width: 6px; 
    height: 6px; 
}
::-webkit-scrollbar-track { 
    background: rgba(0,0,0,0.1); 
    border-radius: 10px; 
}
::-webkit-scrollbar-thumb { 
    background: rgba(255,255,255,0.2); 
    border-radius: 10px; 
}

/* Guide Styles */
.guide-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
    font-size: 11px;
    color: #ccc;
}
.guide-icon {
    width: 20px;
    height: 20px;
    background: rgba(255,255,255,0.1);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ff3366;
}