/* استایل‌های اصلی BG Player */
.at-cursor-beat { background: rgba(0, 100, 200, 0.85) !important; width: 2px !important; box-shadow: 0 0 2px rgba(0, 100, 200, 0.5) !important; }
.at-cursor-bar { background: transparent !important; }
.at-highlight * { fill: #0078ff !important; stroke: #0078ff !important; }
.at-selection { background: rgba(0, 120, 255, 0.15) !important; }

.bg-player-ui { background: #1e2b36; border-radius: 12px; margin: 20px 0; box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15); overflow: hidden; }
.bg-controls-primary { display: flex; align-items: center; gap: 12px; padding: 12px 20px; background: #2c3e50; flex-wrap: wrap; }
.bg-play-pause-btn, .bg-stop-btn { background: #0d1b24; border: none; color: #fff; padding: 8px 18px; border-radius: 30px; cursor: pointer; min-width: 50px; font-size: 16px; transition: all 0.2s ease; }
.bg-play-pause-btn:hover, .bg-stop-btn:hover { background: #1e2b36; transform: scale(0.96); }
.bg-volume-wrap, .bg-speed-wrap { display: flex; align-items: center; gap: 8px; background: #0d1b24; padding: 5px 15px; border-radius: 30px; }
.bg-volume-wrap span, .bg-speed-wrap span { color: #fff; font-size: 13px; }
.bg-volume-slider, .bg-speed-slider { width: 90px; cursor: pointer; }
.bg-time-display { background: #0d1b24; padding: 5px 15px; border-radius: 30px; color: #fff; font-family: monospace; font-size: 13px; }

.bg-main-layout { display: flex; flex-direction: row; gap: 15px; padding: 15px; background: #243342; }
.bg-tracks-sidebar { width: 240px; min-width: 200px; background: #1e2b36; border-radius: 10px; overflow: hidden; align-self: flex-start; }
.bg-tracks-header { background: #0d1b24; padding: 12px; color: #fff; text-align: center; font-weight: bold; font-size: 14px; }
.bg-tracks-info-note { background: #3d5a6c; padding: 8px; color: #ffd966; text-align: center; font-size: 11px; }
.bg-tracks-list { list-style: none; margin: 0; padding: 0; max-height: 450px; overflow-y: auto; }
.bg-track-item { display: flex; align-items: center; gap: 12px; padding: 12px; border-bottom: 1px solid #3d5a6c; cursor: pointer; transition: all 0.2s; }
.bg-track-item:hover { background: #2c3e50; }
.bg-track-number { width: 40px; height: 40px; background: #0d1b24; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 16px; font-weight: bold; color: #fff; }
.bg-track-number.selected { background: #27ae60; box-shadow: 0 0 0 2px #fff; }
.bg-track-info { flex: 1; }
.bg-track-title { color: #fff; font-size: 13px; margin-bottom: 5px; word-break: break-word; }
.bg-track-note-text { color: #aaa; font-size: 10px; }
.bg-track-actions { display: flex; gap: 8px; margin-top: 5px; }
.bg-track-solo, .bg-track-mute { background: transparent; border: 1px solid #3d5a6c; color: #fff; cursor: pointer; font-size: 10px; padding: 3px 8px; border-radius: 15px; transition: all 0.2s; }
.bg-track-solo:hover { background: #27ae60; border-color: #27ae60; }
.bg-track-mute:hover { background: #e67e22; border-color: #e67e22; }

.bg-player-viewer-wrapper { flex: 1; background: #f9f9f9; border-radius: 10px; overflow: hidden; }
.bg-player-viewer { min-height: 500px; padding: 15px; overflow-x: hidden !important; overflow-y: auto; }
.bg-player-viewer svg { max-width: 100%; height: auto; }

.bg-trigger { background: #2c3e50; color: #fff; border: none; padding: 8px 22px; border-radius: 30px; cursor: pointer; margin: 10px 0; font-size: 14px; font-weight: 500; transition: all 0.2s; }
.bg-trigger:hover { background: #1e2b36; transform: scale(0.97); }

.bg-loader { text-align: center; padding: 45px; color: #2c3e50; font-size: 14px; }
.bg-loader::before { content: ""; display: inline-block; width: 26px; height: 26px; border: 3px solid #2c3e50; border-top-color: transparent; border-radius: 50%; animation: bg-spin 0.7s linear infinite; margin-right: 10px; vertical-align: middle; }
@keyframes bg-spin { to { transform: rotate(360deg); } }
.bg-error { color: #d32f2f; text-align: center; padding: 30px; background: #ffebee; border-radius: 10px; margin: 15px; }

@media (max-width: 768px) {
    .bg-main-layout { flex-direction: column; }
    .bg-tracks-sidebar { width: 100%; }
    .bg-controls-primary { justify-content: center; }
    .bg-volume-slider, .bg-speed-slider { width: 70px; }
}