/* --- Existing :root and general styles --- */
:root {
    --primary-color: #00bcd4; /* Teal accent */
    --secondary-color: #ff4081; /* Pink accent */
    --highlight-color: #ffeb3b; /* Yellow for waveform/gradient top */
    --background-color: #212121; /* Dark grey */
    --surface-color: #333333; /* Slightly lighter grey */
    --text-color: #e0e0e0;
    --text-muted-color: #bdbdbd; /* Used for playlist count */
    --control-height: 45px;
    --border-radius: 8px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: var(--background-color); color: var(--text-color); display: flex; justify-content: center; align-items: center; min-height: 100vh; padding: 20px; }

/* --- Music Player Container --- */
body { align-items: center; }
.music-player { background-color: var(--surface-color); border-radius: var(--border-radius); box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4); overflow: hidden; width: 100%; max-width: 650px; display: flex; flex-direction: column; }

/* --- Player Header --- */
.player-header { display: flex; justify-content: space-between; align-items: center; padding: 10px 15px; background-color: #2a2a2a; border-bottom: 1px solid #444; gap: 12px; }

/* Download Icon Link Styling */
a#download-link { line-height: 1; flex-shrink: 0; margin-right: 8px; color: inherit; text-decoration: none; }

/* Title - Container for scrolling titles */
.title-container {
    position: relative;
    overflow: hidden;
    flex-grow: 1;
    white-space: nowrap;
}

/* Title styling */
#current-track-title {
    font-size: 1.1em; 
    color: #fff; 
    text-shadow: 0 1px 3px rgba(0,0,0,0.5);
    display: inline-block;
    position: relative;
}

/* Scrolling animation class */
.scrolling-title {
    animation: marquee var(--scroll-duration, 10s) linear infinite;
    padding-right: 50px; /* Space after text before it repeats */
    position: absolute;
    left: 0;
    top: 0;
    white-space: nowrap;
    will-change: transform; /* Optimize animation performance */
}

/* Pause animation on hover */
.title-container:hover .scrolling-title {
    animation-play-state: paused;
}

@keyframes marquee {
    0% { transform: translateX(0); }
    85% { transform: translateX(var(--scroll-distance, -100%)); }
    95% { transform: translateX(var(--scroll-distance, -100%)); } /* Hold for pause */
    96% { transform: translateX(0); } /* Instant reset */
    100% { transform: translateX(0); }
}

/* Container for header controls */
.header-controls { display: flex; align-items: center; gap: 15px; flex-shrink: 0; }

/* Shared style for header icons */
.header-icon { color: var(--text-muted-color); font-size: 1.1em; transition: color 0.2s ease; display: block; }
.header-icon:hover { color: var(--primary-color); }

/* Specific link styling */
a.github-icon-link {
    text-decoration: none;
    line-height: 1;
}
/* Use brand color for GitHub icon */
.fa-github:hover {
     color: #ffffff; /* White for GitHub hover, or keep primary */
}


/* Style for button containing icon */
.icon-button { background: none; border: none; padding: 0; margin: 0; cursor: pointer; line-height: 1; }

#viz-style-selector { background-color: rgba(0, 0, 0, 0.5); color: var(--text-muted-color); border: 1px solid #444; border-radius: 4px; padding: 3px 5px; font-size: 0.8em; cursor: pointer; }
#viz-style-selector:hover { color: var(--text-color); border-color: #666; }

/* --- Visualization --- */
.visualization-container { position: relative; background-color: #1a1a1a; height: 180px; width: 100%; }
#visualizer-canvas { position: absolute; top: 0; left: 0; width: 100%; height: 100%; opacity: 0.9; }

/* --- Controls --- */
.controls { display: flex; align-items: center; padding: 10px 15px; background-color: #2a2a2a; height: var(--control-height); gap: 10px; flex-wrap: nowrap; }
.controls button { background: none; border: none; color: var(--text-muted-color); font-size: 1.2em; cursor: pointer; padding: 5px; transition: color 0.2s ease, transform 0.1s ease, background-color 0.2s ease; width: 35px; height: 35px; display: flex; justify-content: center; align-items: center; border-radius: 50%; flex-shrink: 0; }
.controls button:hover:not(:disabled) { color: var(--text-color); background-color: rgba(255, 255, 255, 0.1); }
.controls button:active:not(:disabled) { transform: scale(0.9); }
.controls button:disabled { color: #666; cursor: not-allowed; }
#play-pause-btn i.fa-pause { color: var(--primary-color); }
#time-indicator { font-size: 0.9em; color: var(--text-muted-color); min-width: 90px; text-align: center; white-space: nowrap; flex-shrink: 0; }
input[type="range"] { -webkit-appearance: none; appearance: none; height: 6px; background: #555; border-radius: 3px; cursor: pointer; margin: 0 5px; transition: opacity 0.2s ease; }
input[type="range"]:disabled { opacity: 0.5; cursor: not-allowed; }
input[type="range"]::-webkit-slider-runnable-track { height: 6px; background: #555; border-radius: 3px; }
input[type="range"]::-moz-range-track { height: 6px; background: #555; border-radius: 3px; }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; appearance: none; width: 16px; height: 16px; background: var(--primary-color); border-radius: 50%; margin-top: -5px; transition: background-color 0.2s ease; }
input[type="range"]::-moz-range-thumb { width: 16px; height: 16px; background: var(--primary-color); border: none; border-radius: 50%; cursor: pointer; }
input[type="range"]:hover::-webkit-slider-thumb { background: var(--secondary-color); }
input[type="range"]:hover::-moz-range-thumb { background: var(--secondary-color); }
#seek-bar { flex-grow: 1; min-width: 100px; }
#volume-bar { width: 80px; flex-shrink: 0; }

/* Play mode button styling */
#play-mode-btn .fa-repeat { color: var(--primary-color); }
#play-mode-btn.mode-repeat-one .fa-repeat { color: var(--secondary-color); }
#play-mode-btn.mode-randomize .fa-random { color: var(--highlight-color); }

/* --- Playlist --- */
.playlist-container { padding: 15px; max-height: 300px; overflow-y: auto; background-color: var(--surface-color); }

/* Playlist header with source toggle */
.playlist-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px; border-bottom: 1px solid #444; padding-bottom: 8px; }
.playlist-container h3 { margin-bottom: 0; font-weight: 500; color: var(--text-muted-color); }

/* Header controls group */
.header-controls-group { display: flex; gap: 15px; align-items: center; }

/* Source toggle buttons */
.source-toggle { display: flex; gap: 8px; }

/* View toggle buttons */
.view-toggle { display: flex; gap: 4px; border-left: 1px solid #555; padding-left: 15px; }
.view-btn { background-color: #404040; color: var(--text-muted-color); border: 1px solid #555; border-radius: 4px; padding: 6px 10px; font-size: 0.9em; cursor: pointer; transition: all 0.2s ease; display: flex; align-items: center; justify-content: center; min-width: 36px; }
.view-btn:hover { background-color: #555; color: var(--text-color); border-color: #666; }
.view-btn.active { background-color: var(--primary-color); color: #111; border-color: var(--primary-color); }
.view-btn.active:hover { opacity: 0.9; }
.view-btn i { font-size: 1em; }
.source-btn { background-color: #404040; color: var(--text-muted-color); border: 1px solid #555; border-radius: var(--border-radius); padding: 6px 12px; font-size: 0.85em; cursor: pointer; transition: all 0.2s ease; display: flex; align-items: center; gap: 6px; }
.source-btn:hover { background-color: #555; color: var(--text-color); border-color: #666; }
.source-btn.active { background-color: var(--primary-color); color: #111; border-color: var(--primary-color); font-weight: 600; }
.source-btn.active:hover { background-color: var(--primary-color); opacity: 0.9; }
.source-btn i { font-size: 1em; }
.source-btn.download-btn { background-color: var(--secondary-color); border-color: var(--secondary-color); color: #fff; }
.source-btn.download-btn:hover { opacity: 0.9; background-color: var(--secondary-color); }

/* Grid view layout */
.playlist-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(90px, 1fr)); gap: 15px; }

/* Common playlist item styles */
.playlist-item { background-color: #404040; border-radius: var(--border-radius); cursor: pointer; transition: background-color 0.2s ease, transform 0.1s ease; overflow: hidden; }
.playlist-item:hover { background-color: #555; }
.playlist-item-count { font-size: 0.75em; color: var(--text-muted-color); display: block; margin-top: auto; }

/* Grid view specific styles */
.playlist-grid .playlist-item { padding: 10px; text-align: center; display: flex; flex-direction: column; justify-content: space-between; min-height: 105px; }
.playlist-grid .playlist-item:hover { transform: translateY(-2px); }
.playlist-grid .playlist-item i { font-size: 2.5em; display: block; margin-bottom: 8px; color: var(--primary-color); }
.playlist-grid .playlist-item.active { background-color: var(--primary-color); color: #111; font-weight: 500; transform: translateY(0); }
.playlist-grid .playlist-item.active i { color: #111; }
.playlist-grid .playlist-item.active .playlist-item-title { color: #111; font-weight: 600; }
.playlist-grid .playlist-item.active .playlist-item-count { color: #444; }

/* List view layout */
.playlist-list { display: flex; flex-direction: column; gap: 2px; }
.playlist-list .playlist-item { display: grid !important; grid-template-columns: 35px 2fr 1.5fr 80px 80px 70px; gap: 10px; align-items: center; padding: 6px 10px !important; min-height: auto !important; border-radius: 4px; text-align: left; flex-direction: row !important; }
.playlist-list .playlist-item:hover { transform: none !important; }
.playlist-list .playlist-item i { font-size: 1.2em !important; margin: 0 !important; justify-self: center; color: var(--primary-color); display: inline-block !important; }
.playlist-list .playlist-item-title-container { margin: 0 !important; }
.playlist-list .playlist-item-title { font-size: 0.9em; }
.playlist-list .playlist-item-artist { font-size: 0.85em; color: var(--text-muted-color); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.playlist-list .playlist-item-duration, .playlist-list .playlist-item-bitrate, .playlist-list .playlist-item-plays { font-size: 0.85em; color: var(--text-muted-color); text-align: center; }
.playlist-list .playlist-item-count { display: none !important; }
.playlist-list .playlist-item.active { background-color: var(--primary-color); color: #111; font-weight: 500; transform: none !important; }
.playlist-list .playlist-item.active i { color: #111; }
.playlist-list .playlist-item.active .playlist-item-title { color: #111; font-weight: 600; }
.playlist-list .playlist-item.active .playlist-item-artist,
.playlist-list .playlist-item.active .playlist-item-duration,
.playlist-list .playlist-item.active .playlist-item-bitrate,
.playlist-list .playlist-item.active .playlist-item-plays { color: #444; font-weight: 600; }

/* Playlist item title container */
.playlist-item-title-container {
    position: relative;
    overflow: hidden;
    width: 100%;
    margin-bottom: 4px;
}

.playlist-item-title { 
    font-size: 0.85em; 
    color: var(--text-color); 
    display: inline-block;
    white-space: nowrap;
    position: relative;
}

/* Scrolling animation for playlist items */
.playlist-item-title.scrolling-title {
    animation: scroll-playlist-title var(--scroll-duration, 8s) linear infinite;
    animation-play-state: running; /* Always scroll if needed */
    padding-right: 20px; /* Space after text before it repeats */
    will-change: transform; /* Optimize animation performance */
}

.playlist-item:hover .playlist-item-title.scrolling-title {
    animation-play-state: paused;
}

@keyframes scroll-playlist-title {
    0% { transform: translateX(0); }
    85% { transform: translateX(var(--scroll-distance, -100%)); }
    95% { transform: translateX(var(--scroll-distance, -100%)); } /* Hold for pause */
    96% { transform: translateX(0); } /* Instant reset */
    100% { transform: translateX(0); }
}

.playlist-item-loading, .loading-error { grid-column: 1 / -1; text-align: center; color: var(--text-muted-color); padding: 20px; }
.loading-error { color: var(--secondary-color); }

/* --- Modal Styles --- */
.modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.7); display: flex; justify-content: center; align-items: center; z-index: 1000; opacity: 0; visibility: hidden; transition: opacity 0.3s ease, visibility 0s linear 0.3s; }
.modal-overlay:not(.hidden) { opacity: 1; visibility: visible; transition: opacity 0.3s ease; }
.modal-content { position: relative; max-height: 90vh; overflow-y: auto; transform: scale(0.9); transition: transform 0.3s ease; }
.modal-overlay:not(.hidden) .modal-content { transform: scale(1); }
.modal-close-btn { position: absolute; top: 10px; right: 15px; font-size: 2em; color: var(--text-muted-color); background: none; border: none; cursor: pointer; line-height: 1; padding: 0; }
.modal-close-btn:hover { color: var(--text-color); }

/* --- Styles for Stats Content --- */
.stats-container { background-color: var(--surface-color); border-radius: var(--border-radius); box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4); padding: 25px 35px; width: 90%; max-width: 900px; margin: 0; color: var(--text-color); }
.stats-container h1, .stats-container h2 { color: var(--primary-color); border-bottom: 1px solid #555; padding-bottom: 10px; margin-bottom: 20px; }
.stats-container h1 { font-size: 1.8em; }
.stats-container h2 { font-size: 1.4em; margin-top: 30px; }
.stats-summary { background-color: #404040; padding: 15px 20px; border-radius: var(--border-radius); margin-bottom: 30px; }
.stats-summary p { font-size: 1.1em; margin: 5px 0; }
.stats-summary strong { color: var(--secondary-color); }
/* Table styles - Note: Table itself is removed from HTML, keeping styles just in case */
#stats-table { width: 100%; border-collapse: collapse; margin-top: 10px; }
#stats-table th, #stats-table td { border-bottom: 1px solid #444; padding: 10px 8px; text-align: left; }
#stats-table th { color: var(--text-muted-color); font-size: 0.9em; text-transform: uppercase; }
#stats-table td { font-size: 0.95em; }
#stats-table td:nth-child(2), #stats-table td:nth-child(3) { text-align: right; font-feature-settings: "tnum"; }
.stats-chart-container { margin-top: 20px; background-color: #404040; padding: 20px; border-radius: var(--border-radius); }

/* --- YouTube Download Modal Styles --- */
.youtube-container { background-color: var(--surface-color); border-radius: var(--border-radius); box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4); padding: 25px 35px; width: 90%; max-width: 600px; margin: 0; color: var(--text-color); }
.youtube-container h1 { color: var(--primary-color); border-bottom: 1px solid #555; padding-bottom: 15px; margin-bottom: 25px; font-size: 1.8em; display: flex; align-items: center; gap: 12px; }
.youtube-container h1 i { color: #ff0000; }
.youtube-container h3 { color: var(--primary-color); margin-bottom: 15px; }

/* Input Section */
.youtube-input-section { margin-bottom: 25px; }
.youtube-input-section label { display: block; margin-bottom: 8px; color: var(--text-muted-color); font-size: 0.9em; }
.youtube-input-section input[type="text"] { width: 100%; padding: 12px; background-color: #404040; border: 1px solid #555; border-radius: var(--border-radius); color: var(--text-color); font-size: 1em; margin-bottom: 12px; }
.youtube-input-section input[type="text"]:focus { outline: none; border-color: var(--primary-color); }
.youtube-input-section input[type="text"]::placeholder { color: #888; }
.youtube-input-section textarea { width: 100%; padding: 12px; background-color: #404040; border: 1px solid #555; border-radius: var(--border-radius); color: var(--text-color); font-size: 0.95em; margin-bottom: 12px; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; resize: vertical; min-height: 120px; }
.youtube-input-section textarea:focus { outline: none; border-color: var(--primary-color); }
.youtube-input-section textarea::placeholder { color: #888; }
.checkbox-label { display: flex; align-items: center; gap: 10px; margin-top: 15px; cursor: pointer; font-size: 0.95em; }
.checkbox-label input[type="checkbox"] { width: 18px; height: 18px; cursor: pointer; }
.checkbox-note { display: block; margin-left: 28px; color: #888; font-size: 0.85em; font-style: italic; }

/* Action Buttons */
.youtube-action-btn { background-color: var(--primary-color); color: #111; border: none; border-radius: var(--border-radius); padding: 12px 24px; font-size: 1em; font-weight: 600; cursor: pointer; transition: all 0.2s ease; display: inline-flex; align-items: center; gap: 8px; width: 100%; justify-content: center; }
.youtube-action-btn:hover { opacity: 0.9; transform: translateY(-1px); }
.youtube-action-btn:active { transform: translateY(0); }
.youtube-action-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.download-btn-primary { background-color: var(--secondary-color); color: #fff; margin-top: 15px; }

/* Info Section */
.youtube-info-section { background-color: #404040; padding: 20px; border-radius: var(--border-radius); margin-bottom: 20px; }
.youtube-info-content { margin-bottom: 15px; }
.youtube-info-content p { margin: 8px 0; line-height: 1.6; }
.youtube-info-content strong { color: var(--primary-color); }
.youtube-info-content .playlist-badge { display: inline-block; background-color: var(--secondary-color); color: #fff; padding: 4px 10px; border-radius: 12px; font-size: 0.85em; font-weight: 600; margin-left: 8px; }

/* Options */
.youtube-options { margin-top: 20px; }
.youtube-options label { display: block; margin-bottom: 8px; color: var(--text-muted-color); font-size: 0.9em; }
.youtube-options input[type="text"] { width: 100%; padding: 10px; background-color: #333; border: 1px solid #555; border-radius: var(--border-radius); color: var(--text-color); font-size: 0.95em; }
.youtube-options input[type="text"]:focus { outline: none; border-color: var(--primary-color); }

/* Progress Section */
.youtube-progress-section { background-color: #404040; padding: 20px; border-radius: var(--border-radius); margin-bottom: 20px; }
.progress-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px; }
.progress-header h3 { margin: 0; color: var(--primary-color); }
#progress-status { color: var(--text-muted-color); font-size: 0.9em; }
.progress-bar-container { width: 100%; height: 30px; background-color: #333; border-radius: 15px; overflow: hidden; margin-bottom: 15px; }
.progress-bar { height: 100%; background: linear-gradient(90deg, var(--primary-color), var(--secondary-color)); border-radius: 15px; transition: width 0.3s ease; width: 0%; display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 600; font-size: 0.85em; }
.progress-details { color: var(--text-muted-color); font-size: 0.9em; line-height: 1.6; }

/* Results Section */
.youtube-results-section { background-color: #404040; padding: 20px; border-radius: var(--border-radius); margin-bottom: 20px; }
.download-results { margin-bottom: 20px; }
.download-results p { margin: 8px 0; line-height: 1.6; }
.download-results strong { color: var(--primary-color); }
.result-success { color: #4caf50; }
.result-warning { color: #ff9800; }
.result-error { color: var(--secondary-color); }

/* --- Utility --- */
.hidden { display: none !important; }

/* --- Scrollbar Styling --- */
.playlist-container::-webkit-scrollbar, body::-webkit-scrollbar, .modal-content::-webkit-scrollbar { width: 8px; }
.playlist-container::-webkit-scrollbar-track, body::-webkit-scrollbar-track, .modal-content::-webkit-scrollbar-track { background: #2a2a2a; border-radius: 4px; }
.playlist-container::-webkit-scrollbar-thumb, body::-webkit-scrollbar-thumb, .modal-content::-webkit-scrollbar-thumb { background-color: #555; border-radius: 4px; border: 2px solid #2a2a2a; }
.playlist-container::-webkit-scrollbar-thumb:hover, body::-webkit-scrollbar-thumb:hover, .modal-content::-webkit-scrollbar-thumb:hover { background-color: #777; }