From 52f112568c6aba907a7f739dbd1d9b90e562773d Mon Sep 17 00:00:00 2001
From: Lorenzo Iovino <thisloke@proton.me>
Date: Fri, 9 Jan 2026 16:40:37 +0100
Subject: [PATCH] feat: optimize performance and fix CLS issues

---
 src/components/Footer.astro  |  2 --
 src/components/Hero.astro    | 12 +++++++-----
 src/components/Navbar.astro  | 11 ++++++++++-
 src/layouts/BaseLayout.astro | 32 +++++++++++++++++++++++++++++++-
 src/pages/blog.astro         | 15 ++++++++++-----
 src/pages/blog/[slug].astro  |  8 +++++---
 src/styles/global.css        | 25 +++++++++++++++++++++++++
 7 files changed, 88 insertions(+), 17 deletions(-)

diff --git a/src/components/Footer.astro b/src/components/Footer.astro
index a8725fd..aa1fe87 100644
--- a/src/components/Footer.astro
+++ b/src/components/Footer.astro
@@ -1,7 +1,5 @@
 ---
 import { Image } from "astro:assets";
-import astroIcon from "../assets/astro.svg";
-import tailwindIcon from "../assets/tailwind.svg";
 import githubIcon from "../assets/github.svg";
 ---
 
diff --git a/src/components/Hero.astro b/src/components/Hero.astro
index 7e71fc2..2fccaf0 100644
--- a/src/components/Hero.astro
+++ b/src/components/Hero.astro
@@ -10,24 +10,26 @@ import githubIcon from "../assets/github.svg";
 		<div class="mx-auto max-w-5xl">
 			<div
 				class="relative overflow-hidden rounded-3xl bg-white dark:bg-gray-800 shadow-soft-lg hover:shadow-soft-lg transition-all duration-300"
+				style="min-height: 300px;"
 			>
 				<div class="relative flex flex-col md:flex-row items-center md:items-end">
 					<!-- Photo Section -->
 					<div class="w-full md:w-auto flex-shrink-0 order-2 md:order-none">
-						<div class="relative overflow-hidden md:rounded-l-3xl flex justify-center md:block">
+						<div
+							class="relative overflow-hidden md:rounded-l-3xl flex justify-center md:block md:w-[300px]"
+						>
 							<Image
 								src={mePhoto}
 								alt="Photo of Lorenzo Iovino"
-								class="w-48 h-auto md:w-full object-cover object-center"
+								class="w-48 h-48 md:w-[300px] md:h-[300px] object-cover object-center"
 								width={300}
 								height={300}
 								quality={90}
 								format="webp"
 								loading="eager"
 								fetchpriority="high"
+								decoding="sync"
 							/>
-							<div class="absolute inset-0 to-transparent md:bg-gradient-to-r"></div>
-							<div class="absolute inset-0 to-transparent md:bg-gradient-to-r"></div>
 						</div>
 					</div>
 
@@ -36,7 +38,7 @@ import githubIcon from "../assets/github.svg";
 						<div class="space-y-4 md:space-y-6">
 							<!-- Greeting -->
 							<div class="text-center md:text-left">
-								<h1 class="mb-3 text-gray-900 dark:text-gray-100">
+								<h1 class="mb-3 text-gray-900 dark:text-gray-100" style="min-height: 2.5rem;">
 									Hey, I'm <span class="text-gray-900 dark:text-gray-100 font-extrabold"
 										>Lorenzo</span
 									>!
diff --git a/src/components/Navbar.astro b/src/components/Navbar.astro
index c32b23b..4758422 100644
--- a/src/components/Navbar.astro
+++ b/src/components/Navbar.astro
@@ -134,6 +134,7 @@ const currentPath = Astro.url.pathname;
 	<div
 		id="mobile-menu"
 		class="hidden md:hidden bg-secondary dark:bg-gray-800 transition-colors duration-200"
+		style="max-height: 0; overflow: hidden; transition: max-height 0.3s ease-in-out;"
 	>
 		<div class="px-4 py-3 space-y-3">
 			<a
@@ -176,7 +177,15 @@ const currentPath = Astro.url.pathname;
 	const mobileMenu = document.getElementById("mobile-menu");
 
 	mobileMenuButton?.addEventListener("click", () => {
-		mobileMenu?.classList.toggle("hidden");
+		if (mobileMenu?.classList.contains("hidden")) {
+			mobileMenu.classList.remove("hidden");
+			mobileMenu.style.maxHeight = "500px";
+		} else if (mobileMenu) {
+			mobileMenu.style.maxHeight = "0";
+			setTimeout(() => {
+				mobileMenu?.classList.add("hidden");
+			}, 300);
+		}
 	});
 
 	// Theme toggle functionality
diff --git a/src/layouts/BaseLayout.astro b/src/layouts/BaseLayout.astro
index 8eb5d39..7797e89 100644
--- a/src/layouts/BaseLayout.astro
+++ b/src/layouts/BaseLayout.astro
@@ -170,13 +170,32 @@ const fullCanonicalUrl = canonicalUrl || `${siteUrl}${Astro.url.pathname}`;
 
 		<link rel="preconnect" href="https://fonts.googleapis.com" />
 		<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
+		<link
+			rel="preload"
+			as="font"
+			type="font/woff2"
+			href="https://fonts.gstatic.com/s/inter/v13/UcCO3FwrK3iLTeHuS_fvQtMwCp50KnMw2boKoduKmMEVuLyfAZ9hiA.woff2"
+			crossorigin
+		/>
 
 		<style>
+			/* Fallback font ottimizzato per ridurre layout shift */
+			@font-face {
+				font-family: "Inter-fallback";
+				font-style: normal;
+				font-weight: 400 800;
+				src: local("Arial");
+				ascent-override: 90%;
+				descent-override: 22%;
+				line-gap-override: 0%;
+				size-adjust: 107%;
+			}
+
 			@font-face {
 				font-family: "Inter";
 				font-style: normal;
 				font-weight: 400 800;
-				font-display: swap;
+				font-display: optional;
 				src: url(https://fonts.gstatic.com/s/inter/v13/UcCO3FwrK3iLTeHuS_fvQtMwCp50KnMw2boKoduKmMEVuLyfAZ9hiA.woff2)
 					format("woff2");
 				unicode-range:
@@ -184,6 +203,17 @@ const fullCanonicalUrl = canonicalUrl || `${siteUrl}${Astro.url.pathname}`;
 					U+0329, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF,
 					U+FFFD;
 			}
+
+			/* Previeni flash of unstyled content */
+			body {
+				font-family:
+					"Inter",
+					"Inter-fallback",
+					-apple-system,
+					BlinkMacSystemFont,
+					"Segoe UI",
+					sans-serif;
+			}
 		</style>
 
 		<link rel="icon" type="image/x-icon" href="/favicon.ico" />
diff --git a/src/pages/blog.astro b/src/pages/blog.astro
index 1de05d2..fdfb2bf 100644
--- a/src/pages/blog.astro
+++ b/src/pages/blog.astro
@@ -108,7 +108,7 @@ const initialPosts: BlogPost[] = sortedPosts.slice(0, 6);
 
 			<div id="posts-container" class="space-y-8">
 				{
-					initialPosts.map((post: BlogPost) => (
+					initialPosts.map((post: BlogPost, index: number) => (
 						<article class="bg-white dark:bg-gray-800 rounded-2xl shadow-soft-lg overflow-hidden hover:shadow-soft-lg transition-all duration-300">
 							<div class="block">
 								{post.data.heroImage && (
@@ -118,10 +118,12 @@ const initialPosts: BlogPost[] = sortedPosts.slice(0, 6);
 												src={post.data.heroImage}
 												alt={post.data.title}
 												class="w-full h-full object-cover hover:scale-105 transition-transform duration-300"
-												width={1200}
-												height={630}
-												quality={70}
+												width={760}
+												height={570}
+												quality={80}
 												format="webp"
+												loading={index === 0 ? "eager" : "lazy"}
+												fetchpriority={index === 0 ? "high" : undefined}
 											/>
 											<div class="absolute inset-0 bg-gradient-to-t from-black/50 to-transparent" />
 										</div>
@@ -159,7 +161,7 @@ const initialPosts: BlogPost[] = sortedPosts.slice(0, 6);
 										<p class="text-gray-700 dark:text-gray-300 text-lg leading-relaxed mb-4">
 											{post.data.description}
 										</p>
-										<div class="flex items-center text-secondary-800 dark:text-primary font-medium">
+										<div class="flex items-center text-secondary-700 dark:text-primary font-medium">
 											Read more
 											<svg
 												xmlns="http://www.w3.org/2000/svg"
@@ -220,6 +222,9 @@ const initialPosts: BlogPost[] = sortedPosts.slice(0, 6);
 						src="${post.data.heroImage}"
 						alt="${post.data.title}"
 						class="w-full h-full object-cover hover:scale-105 transition-transform duration-300"
+						loading="lazy"
+						width="760"
+						height="570"
 					/>
 					<div class="absolute inset-0 bg-gradient-to-t from-black/50 to-transparent"></div>
 				</div>
diff --git a/src/pages/blog/[slug].astro b/src/pages/blog/[slug].astro
index cf89ca6..ebcb2c6 100644
--- a/src/pages/blog/[slug].astro
+++ b/src/pages/blog/[slug].astro
@@ -82,10 +82,12 @@ const heroImageSrc = entry.data.heroImage?.src || mePhoto.src;
 								src={entry.data.heroImage}
 								alt={entry.data.title}
 								class="w-full h-full object-cover"
-								width={1200}
-								height={630}
-								quality={70}
+								width={824}
+								height={618}
+								quality={80}
 								format="webp"
+								loading="eager"
+								fetchpriority="high"
 							/>
 						</div>
 					</div>
diff --git a/src/styles/global.css b/src/styles/global.css
index 5a63683..009718d 100644
--- a/src/styles/global.css
+++ b/src/styles/global.css
@@ -8,6 +8,15 @@
 		-webkit-font-smoothing: antialiased;
 		-moz-osx-font-smoothing: grayscale;
 		text-rendering: optimizeLegibility;
+		font-family:
+			"Inter",
+			-apple-system,
+			BlinkMacSystemFont,
+			"Segoe UI",
+			Roboto,
+			"Helvetica Neue",
+			Arial,
+			sans-serif;
 	}
 
 	/* Typography base */
@@ -17,6 +26,9 @@
 			"kern" 1,
 			"liga" 1,
 			"calt" 1;
+		/* Previene layout shift durante il caricamento del font */
+		font-synthesis: none;
+		-webkit-text-size-adjust: 100%;
 	}
 
 	/* Headings ottimizzati */
@@ -32,6 +44,8 @@
 			"liga" 1,
 			"calt" 1,
 			"ss01" 1;
+		/* Contenimento del layout per prevenire shift */
+		contain: layout style paint;
 	}
 
 	h1 {
@@ -85,4 +99,15 @@
 	.text-pretty {
 		text-wrap: pretty;
 	}
+
+	/* Previeni layout shift per elementi con contenuto dinamico */
+	.prevent-shift {
+		contain: layout style paint;
+		content-visibility: auto;
+	}
+
+	/* Ottimizza rendering immagini */
+	img {
+		contain: size layout paint;
+	}
 }