/* ===== КОНТЕЙНЕР ТРЕКОВ ===== */
.tracks-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin: var(--space-xl) 0;
}

/* ===== КАРТОЧКИ ТРЕКОВ (ГОЛОС / МЕЛОДИЯ) ===== */
.track-box {
    background: var(--glass-bg);
    backdrop-filter: blur(15px);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.track-box:hover {
    background: var(--glass-bg-strong);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.7);
}

.track-box-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    cursor: pointer;
    padding: var(--space-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
}

.track-box-header:hover {
    background: rgba(229, 57, 53, 0.05);
}

.track-box.collapsed .track-box-header {
    margin-bottom: 0;
}

.track-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.1rem;
    box-shadow: var(--primary-shadow);
    transition: all var(--transition-base);
}

.track-box-header:hover .track-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: var(--primary-shadow-hover);
}

.track-title {
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    flex: 1;
}

.track-toggle {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    color: var(--text-secondary);
}

.track-toggle:hover {
    background: rgba(0, 0, 0, 0.05);
    color: var(--text-primary);
}

.track-box-content {
    overflow: hidden;
    transition: max-height var(--transition-slow), opacity var(--transition-base);
    max-height: 300px;
    opacity: 1;
}

.track-box.collapsed .track-box-content {
    max-height: 0;
    opacity: 0;
    visibility: hidden;
}

/* ===== ТЕКУЩИЙ ТРЕК ===== */
.current-track {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    margin: var(--space-lg) 0 var(--space-md);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-xs);
}

.current-track:hover {
    background: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.track-name {
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.current-track:hover .track-name {
    color: var(--primary-color);
}

.track-actions {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    flex-shrink: 0;
}

.track-favorite,
.track-select {
    background: none;
    border: none;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.track-favorite:hover,
.track-select:hover {
    background: rgba(229, 57, 53, 0.1);
    color: var(--primary-color);
    transform: scale(1.1);
}

.track-favorite i.fas {
    color: var(--primary-color);
}

/* ===== VOLUME SLIDER ===== */
.volume-slider-container {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) 0;
}

.volume-slider-container i {
    color: var(--text-secondary);
    opacity: 0.7;
    font-size: var(--font-size-sm);
    transition: all var(--transition-base);
}

.volume-slider-container:hover i {
    opacity: 1;
    color: var(--primary-color);
}

.modern-slider {
    -webkit-appearance: none;
    height: 6px;
    flex: 1;
    background: rgba(0, 0, 0, 0.1);
    border-radius: var(--radius-full);
    outline: none;
    position: relative;
}

.modern-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: var(--radius-full);
    background: white;
    cursor: pointer;
    border: 3px solid var(--primary-color);
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.25);
    transition: all var(--transition-base);
}

.modern-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 4px 12px rgba(229, 57, 53, 0.4);
}

.modern-slider::-webkit-slider-thumb:active {
    transform: scale(1.1);
}

/* ===== MEDITATION TIPS ===== */
.meditation-tips {
    margin-top: var(--space-lg);
}

.tip {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    background: rgba(229, 57, 53, 0.08);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-sm);
    transition: all var(--transition-base);
}

.tip:hover {
    background: rgba(229, 57, 53, 0.12);
    transform: translateX(4px);
}

.tip i {
    color: var(--primary-color);
    font-size: var(--font-size-lg);
}

.tip span {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ===== ПАНЕЛЬ УПРАВЛЕНИЯ ===== */
.player-controls-panel {
    margin-top: var(--space-2xl);
    padding: var(--space-xl);
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.25);
}

.control-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

.control-btn {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border: none;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.1));
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: var(--shadow-xs);
}

.control-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.3), rgba(255, 255, 255, 0.2));
}

.control-btn i {
    font-size: var(--font-size-lg);
}

.favorites-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    box-shadow: var(--primary-shadow);
}

.favorites-btn:hover {
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    color: white;
    box-shadow: var(--primary-shadow-hover);
}

/* ===== LOADING STATE (pre-download) ===== */
.player-main-btn.loading {
    pointer-events: none;
    opacity: 0.7;
}

.player-main-btn.loading i {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .modern-player-card {
        padding: var(--space-xl);
        border-radius: var(--radius-xl);
    }
    
    .player-control-row {
        gap: var(--space-md);
        padding: var(--space-xl);
        min-height: 100px;
    }
    
    .player-main-btn {
        width: 64px;
        height: 64px;
        min-width: 64px;
    }
    
    .meditation-visual-btn {
        width: 48px;
        height: 48px;
        min-width: 48px;
        font-size: 1rem;
    }
    
    .visualization-container {
        height: 80px;
        padding: 0 var(--space-lg);
    }
}

@media (max-width: 480px) {
    .modern-player-card {
        padding: var(--space-lg);
    }
    
    .player-control-row {
        gap: var(--space-sm);
        padding: var(--space-lg);
        min-height: 90px;
    }
    
    .player-main-btn {
        width: 56px;
        height: 56px;
        min-width: 56px;
    }
    
    .player-main-btn i {
        font-size: 1.3rem;
    }
    
    .meditation-visual-btn {
        width: 44px;
        height: 44px;
        min-width: 44px;
        font-size: 0.9rem;
    }
    
    .visualization-container {
        height: 70px;
        padding: 0 var(--space-md);
    }
    
    .sound-wave {
        gap: 4px;
    }
    
    .wave-bar {
        width: 3px;
    }
    
    .control-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .control-btn {
        justify-content: center;
        width: 100%;
    }
}