/**
 * WP Modern Blog — Okuma İlerleme Çubuğu
 *
 * Scroll pozisyonuna göre #reading-progress div'indeki
 * --progress CSS değişkenini günceller.
 */
( function () {
	'use strict';

	function init() {
		const bar = document.getElementById( 'reading-progress' );
		if ( ! bar ) return;

		let ticking = false;

		function update() {
			const scrollTop =
				window.pageYOffset || document.documentElement.scrollTop;
			const docHeight =
				document.documentElement.scrollHeight - window.innerHeight;
			const progress =
				docHeight > 0
					? Math.min( 100, ( scrollTop / docHeight ) * 100 )
					: 0;

			bar.style.setProperty( '--progress', progress + '%' );
			ticking = false;
		}

		window.addEventListener(
			'scroll',
			function () {
				if ( ! ticking ) {
					requestAnimationFrame( update );
					ticking = true;
				}
			},
			{ passive: true }
		);

		// İlk render
		update();
	}

	if ( document.readyState !== 'loading' ) init();
	else document.addEventListener( 'DOMContentLoaded', init );
} )();