body {
    background: linear-gradient(135deg, #1a1a1a 0%, #0a0a0a 100%);
}

.player-card {
    border-radius: 15px !important;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    position: sticky;
    top: 20px;
}

.playlist {
    max-height: calc(100vh - 40px);
    padding-bottom: 20px;
}

.btn-outline-light:hover {
    background-color: rgba(255,255,255,0.1);
}

.list-group-item {
    background-color: transparent !important;
    color: white !important;
    border-color: #333 !important;
    cursor: pointer;
    transition: all 0.2s;
}

.list-group-item:hover {
    background-color: rgba(255,255,255,0.05) !important;
}

.list-group-item.active {
    background-color: rgba(255,255,255,0.1) !important;
    border-color: #666 !important;
}

.sticky-column {
    position: -webkit-sticky;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.scrollable-column {
    height: 100vh;
    overflow-y: auto;
}

#progress-container {
    transition: all 0.2s;
}

#progress-container:hover {
    height: 10px !important;
}

#progress-bar {
    transition: width 0.1s linear;
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    .sticky-column {
        height: auto;
        position: relative;
    }
    
    .scrollable-column {
        height: 50vh;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #1a1a1a;
}

::-webkit-scrollbar-thumb {
    background: #333;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #444;
}