/* styles.css */
:root {
    --panel-width: 300px; /* Slightly narrower panel */
    --toggle-button-color: #1e90ff; /* Dodger blue */
    --toggle-button-hover: #104e8b; /* Darker blue */
    --panel-background: rgba(30, 33, 39, 0.97); /* Dark grey, slightly less transparent */
    --text-color: #c8c8c8; /* Lighter grey text */
    --text-color-light: #ffffff;
    --control-bg: #3a3f4b;
    --control-border: #2c313a;
    --overlay-bg: rgba(15, 17, 21, 0.9); /* Darker overlay, slightly more transparent */
    --highlight-color: #61afef; /* Light blue highlight */
    --player-height: 70px; /* Height of the bottom player bar */
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
    background-color: #1a1d23; /* Very dark background */
    color: var(--text-color);
    margin: 0;
    padding: 0;
    overflow: hidden; /* Prevent scrollbars */
    position: relative;
    min-height: 100vh;
}

/* Visualizer Container - Full Screen Background */
#visualizer-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: #000000;
    z-index: 1; /* Base layer */
}
#visualizer-container canvas {
     display: block; /* Prevent extra space below canvas */
     width: 100%;
     height: 100%;
}


/* Fixed Toggle Buttons Styling */
.panel-toggle-btn {
    position: fixed;
    top: 20px;
    z-index: 1002; /* Above panels */
    background-color: rgba(30, 33, 39, 0.7); /* Semi-transparent background */
    color: var(--text-color-light);
    border: 1px solid var(--control-border);
    padding: 8px 15px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9em;
    transition: background-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}
.panel-toggle-btn:hover {
    background-color: var(--control-bg);
    transform: scale(1.05);
    box-shadow: 0 4px 10px rgba(0,0,0,0.4);
}
.panel-toggle-btn i { font-size: 1.1em; color: var(--highlight-color);}
.panel-toggle-btn .toggle-text { display: inline; margin-left: 4px; }

/* Position individual toggles */
.top-left { left: 20px; }
.top-right { right: 20px; }


/* Side Panel Base Styles */
.side-panel {
    position: fixed;
    top: 0;
    height: 100vh;
    width: var(--panel-width);
    background-color: var(--panel-background);
    box-shadow: 0 0 25px rgba(0, 0, 0, 0.6);
    z-index: 1001; /* Below toggles */
    transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    padding: 20px;
    padding-top: 70px; /* Space for fixed toggle buttons */
    box-sizing: border-box;
    overflow-y: auto; /* Enable scroll within panel */
    color: var(--text-color);
}
.side-panel h2 {
    margin-top: 0;
    margin-bottom: 25px;
    border-bottom: 1px solid var(--control-bg);
    padding-bottom: 10px;
    color: var(--text-color-light);
    font-size: 1.2em; /* Adjusted size */
    display: flex;
    align-items: center;
    gap: 10px;
}
.side-panel h2 i { color: var(--highlight-color); }

/* Panel Positioning & Sliding */
.left-panel {
    left: 0;
    transform: translateX(calc(-1 * var(--panel-width))); /* Start hidden left */
}
.left-panel.open { transform: translateX(0); /* Slide in */ }
.right-panel {
    right: 0;
    transform: translateX(var(--panel-width)); /* Start hidden right */
}
.right-panel.open { transform: translateX(0); /* Slide in */ }

/* Close Button inside panels */
.close-panel-btn {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.8em;
    line-height: 1;
    cursor: pointer;
    transition: color 0.2s ease, transform 0.2s ease;
}
.close-panel-btn:hover { color: var(--text-color-light); transform: scale(1.1); }


/* Filter Controls Styling (inside panel) */
#controls-container { margin-bottom: 15px; display: grid; gap: 20px; } /* Increased gap */

.filter-row {
    display: flex; /* Use flexbox for vertical layout */
    flex-direction: column; /* Stack label and slider */
    align-items: stretch; /* Stretch items horizontally */
    gap: 5px; /* Small gap between header and slider */
    padding: 10px;
    background-color: var(--control-bg);
    border-radius: 4px;
    border: 1px solid var(--control-border);
}

.filter-row-header { /* Container for label and value */
     display: flex;
     justify-content: space-between;
     align-items: baseline;
     margin-bottom: 5px; /* Space below header */
}

.attribute-label {
    font-weight: bold;
    font-size: 0.9em;
    text-transform: uppercase;
    color: var(--text-color);
    /* Remove text overflow handling if multiline is okay */
}

.value-display {
    font-size: 0.85em;
    color: var(--text-color);
    font-family: monospace;
    /* Adjust alignment if needed */
}


.slider-wrapper {
    position: relative;
    height: 20px; /* Slider height */
    display: flex;
    align-items: center;
    background-color: #5c6370; /* Track background */
    border-radius: 3px;
    padding: 0 5px; /* Padding inside wrapper */
    width: 100%; /* Ensure wrapper takes full width */
    box-sizing: border-box;
}

/* Style individual range inputs */
.filter-row input[type="range"] {
    -webkit-appearance: none; /* Override default look */
    appearance: none;
    width: 100%; /* Take full width relative to wrapper */
    height: 6px; /* Track height */
    background: transparent; /* Hide original track */
    cursor: pointer;
    margin: 0;
    position: absolute; /* Position sliders on top of each other */
    left: 5px; /* Align with padding */
    right: 5px;
    pointer-events: none; /* Make track non-interactive */
}
.filter-row input[type="range"]:focus{ outline: none; }

/* Thumb (the draggable handle) */
.filter-row input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 10px; /* Thumb width */
    height: 20px; /* Thumb height */
    background: var(--highlight-color);
    border-radius: 3px;
    cursor: pointer;
    margin-top: -7px; /* Center thumb vertically on the visual track */
    pointer-events: auto; /* Make thumb interactive */
    position: relative; /* Needed for z-index */
    z-index: 1;
}
.filter-row input[type="range"]::-moz-range-thumb {
    width: 10px;
    height: 20px;
    background: var(--highlight-color);
    border-radius: 3px;
    border: none;
    cursor: pointer;
    pointer-events: auto;
    z-index: 1;
}
/* Ensure min slider thumb can be clicked over max slider track */
.filter-row input[type="range"].min-slider::-webkit-slider-thumb { z-index: 2; }
.filter-row input[type="range"].min-slider::-moz-range-thumb { z-index: 2; }

#filter-count { font-size: 0.9em; color: #888; margin-top: 15px; text-align: center; }


/* Visual Controls Styling */
#visual-controls-container { display: grid; gap: 20px; }
.control-group { background-color: var(--control-bg); padding: 12px; border-radius: 4px; border: 1px solid var(--control-border); }
.control-group label { display: block; margin-bottom: 8px; font-size: 0.9em; font-weight: bold; }
.control-group select, .control-group input[type="range"] { width: 100%; padding: 8px; background-color: #dcdcdc; border: 1px solid #aaa; border-radius: 4px; font-size: 0.9em; box-sizing: border-box; color: #333; }
.control-group input[type="range"] { padding: 0; height: 8px; accent-color: var(--highlight-color); cursor: pointer; }
#intensity-value { display: inline-block; margin-left: 10px; font-weight: bold; font-family: monospace;}


/* Player Overlay (Bottom) */
#player-overlay {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: var(--player-height);
    background-color: var(--overlay-bg);
    padding: 0 20px; /* Horizontal padding only */
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 1000; /* Above viz, below panels */
    box-shadow: 0 -3px 15px rgba(0,0,0,0.4);
    color: var(--text-color);
}

/* Album Art */
#player-overlay #albumArt {
    width: calc(var(--player-height) - 20px); /* Square, with padding */
    height: calc(var(--player-height) - 20px);
    border-radius: 4px;
    object-fit: cover;
    margin-right: 15px;
    background-color: #333; /* Placeholder color */
    flex-shrink: 0; /* Prevent shrinking */
}

/* Track Info */
#player-overlay #trackInfo {
    flex-grow: 1; /* Takes up available space */
    margin-right: 15px;
    overflow: hidden; /* Hide overflow */
    white-space: nowrap; /* Prevent wrapping */
    text-overflow: ellipsis; /* Add ... if too long */
}
#player-overlay #trackInfo a {
    color: var(--text-color-light);
    text-decoration: none;
    font-size: 1em; /* Adjusted size */
}
#player-overlay #trackInfo a:hover { text-decoration: underline; }
#player-overlay #current-track-title { font-weight: normal; /* Remove bold? */ }

/* Player Controls (Center) */
#player-overlay #player-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px; /* Space between buttons */
    flex-shrink: 0; /* Prevent shrinking */
}
#player-overlay #player-controls button {
    background: none; border: none; color: #ccc; font-size: 1.4em;
    cursor: pointer; transition: color 0.2s ease, transform 0.2s ease;
    padding: 8px; line-height: 1;
}
#player-overlay #player-controls button:hover { color: var(--text-color-light); transform: scale(1.1); }
#player-overlay #player-controls button:disabled { color: #555; cursor: not-allowed; transform: none; }
#player-overlay #player-controls #playPauseBtn { font-size: 2.2em; } /* Larger Play/Pause */


/* Volume Control (Right) */
#player-overlay #volume-control {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 150px; /* Ensure space */
    flex-shrink: 0; /* Prevent shrinking */
}
#player-overlay #volume-control i { color: #aaa; font-size: 1em; }
#player-overlay #volume-control input[type="range"] {
    width: 100px; height: 5px; cursor: pointer; accent-color: var(--highlight-color);
    -webkit-appearance: none; appearance: none; background-color: #555;
    border-radius: 3px; outline: none;
}
#player-overlay #volume-control input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none; appearance: none; width: 14px; height: 14px;
    background: var(--highlight-color); border-radius: 50%; cursor: pointer;
}
#player-overlay #volume-control input[type="range"]::-moz-range-thumb {
    width: 14px; height: 14px; background: var(--highlight-color);
    border-radius: 50%; border: none; cursor: pointer;
}

/* Media Queries for smaller screens */
@media (max-width: 768px) {
    :root { --panel-width: 280px; --player-height: 65px; } /* Adjust sizes */
    .panel-toggle-btn { padding: 8px 12px; font-size: 0.8em; top: 10px; gap: 5px;}
    .top-left { left: 10px; }
    .top-right { right: 10px; }
    .panel-toggle-btn .toggle-text { display: none; } /* Hide text on small screens */

    .side-panel { padding-top: 60px; } /* Adjust padding */
    .close-panel-btn { font-size: 1.5em; top: 12px; right: 12px; }

    .filter-row { grid-template-columns: 70px 1fr 60px; gap: 8px;}
    .attribute-label { font-size: 0.75em; }
    .value-display { font-size: 0.75em; min-width: 55px; }

    #player-overlay { height: var(--player-height); padding: 0 10px; justify-content: center; } /* Center content */
    #player-overlay #albumArt { display: none; } /* Hide album art */
    #player-overlay #trackInfo { flex-grow: 0; margin-right: 15px;} /* Don't grow */
    #player-overlay #volume-control { display: none; } /* Hide volume on small screens */
    #player-overlay #player-controls { gap: 15px; }
    #player-overlay #player-controls button { font-size: 1.3em; }
    #player-overlay #player-controls #playPauseBtn { font-size: 1.9em; }

}
@media (max-width: 480px) { /* Even smaller screens */
     #player-overlay #trackInfo { display: none; } /* Hide track info */
     #player-overlay #player-controls { gap: 20px; } /* More space for controls */
}