/**
 * Controls Panel - Main control interface
 */

#controls {
    position: fixed;
    bottom: 20px;
    left: 20px;
    background-color: var(--color-control-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    z-index: var(--z-controls);
    width: clamp(280px, 40vw, 450px);
    max-height: min(85vh, 650px);
    overflow-y: auto;
    overflow-x: hidden;
    transition: opacity var(--transition-slow), transform var(--transition-slow), left var(--transition-slow);
    box-shadow: var(--shadow-lg);
    font-size: var(--font-size-base);
}

/* When MIDI mode is active, shift controls to accommodate MIDI panel */
#controls.midi-mode-active {
    left: 20px;
}

#controls.controls-hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateY(20px);
}

#controls.controls-visible {
    opacity: 1;
    pointer-events: all;
    transform: translateY(0);
}

/* Improved Scrollbar */
#controls::-webkit-scrollbar {
    width: 6px;
}

#controls::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
}

#controls::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

#controls::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.35);
}

/* Control Hint */
#control-hint {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.5);
    font-size: var(--font-size-sm);
    padding: 5px 10px;
    border-radius: var(--radius-md);
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    transition: opacity 0.5s ease;
    z-index: var(--z-ruler);
}

#control-hint.visible {
    opacity: 1;
    animation: fade-in-out 3s forwards;
}

@keyframes fade-in-out {
    0% { opacity: 0; }
    20% { opacity: 1; }
    80% { opacity: 1; }
    100% { opacity: 0; }
}