diff --git a/src/Components/Footer/Footer.tsx b/src/Components/Footer/Footer.tsx
index f35d635..ec925d3 100644
--- a/src/Components/Footer/Footer.tsx
+++ b/src/Components/Footer/Footer.tsx
@@ -5,6 +5,11 @@ import { motion } from "framer-motion";
 const Footer = () => {
   const { t, i18n } = useTranslation();
 
+  // Browsers report region variants (e.g. "en-US", "pt-BR"), not just the
+  // bare "en"/"pt" i18next is configured with - matching on that exactly
+  // would pick the wrong sized text class for most real visitors.
+  const currentLang = i18n.language?.startsWith("pt") ? "pt" : "en";
+
   return (
     <footer className="flex flex-col space-y-8 justify-center items-center mt-10 mb-8 px-6 pt-10">
       <div className="w-full max-w-xs h-px bg-gradient-to-r from-transparent via-white/10 to-transparent" />
@@ -38,7 +43,7 @@ const Footer = () => {
         <a
           href="/tos"
           className={
-            i18n.language === "en"
+            currentLang === "en"
               ? "footer-text hover:text-gold-light transition-colors"
               : "footer-text-pt hover:text-gold-light transition-colors"
           }
@@ -48,7 +53,7 @@ const Footer = () => {
         <a
           href="/privacy"
           className={
-            i18n.language === "en"
+            currentLang === "en"
               ? "footer-text hover:text-gold-light transition-colors"
               : "footer-text-pt hover:text-gold-light transition-colors"
           }
@@ -59,7 +64,7 @@ const Footer = () => {
 
       <p
         className={
-          i18n.language === "en"
+          currentLang === "en"
             ? "footer-text text-center"
             : "footer-text-pt text-center"
         }
diff --git a/src/Components/Navbar/Navbar.tsx b/src/Components/Navbar/Navbar.tsx
index 55e4d15..38c2643 100644
--- a/src/Components/Navbar/Navbar.tsx
+++ b/src/Components/Navbar/Navbar.tsx
@@ -31,26 +31,52 @@ const Navbar = () => {
   ];
 
   useEffect(() => {
-    const handleScroll = () => {
+    // Each section's offset, measured once (and on resize) instead of on
+    // every scroll tick - getBoundingClientRect() forces a synchronous
+    // layout recalc, and calling it on every native scroll event (which
+    // fires far more often than the display's refresh rate during a fast
+    // swipe or a smooth-scroll animation) is what made scrolling feel
+    // sluggish: layout was being thrashed dozens of times a second.
+    let sectionTops: { path: string; top: number }[] = [];
+
+    const measureSections = () => {
+      sectionTops = navigation.map((item) => {
+        const el = document.getElementById(item.path);
+        const top = el
+          ? el.getBoundingClientRect().top + window.scrollY
+          : Infinity;
+        return { path: item.path, top };
+      });
+    };
+
+    let ticking = false;
+
+    const updateFromScroll = () => {
       setColorChange(window.scrollY >= 100);
 
       // The active section is whichever nav target's start we've scrolled
       // past most recently - not just "is it in the viewport", since a
       // short section could otherwise never register as active at all.
       let current = navigation[0].path;
-      for (const item of navigation) {
-        const el = document.getElementById(item.path);
-        if (!el) continue;
-        const top = el.getBoundingClientRect().top + window.scrollY;
+      for (const { path, top } of sectionTops) {
         if (window.scrollY + NAVBAR_HEIGHT + 40 >= top) {
-          current = item.path;
+          current = path;
         }
       }
       setActiveSection(current);
+      ticking = false;
     };
 
-    handleScroll();
+    const handleScroll = () => {
+      if (ticking) return;
+      ticking = true;
+      requestAnimationFrame(updateFromScroll);
+    };
+
+    measureSections();
+    updateFromScroll();
     window.addEventListener("scroll", handleScroll, { passive: true });
+    window.addEventListener("resize", measureSections);
 
     const scrollPath = sessionStorage.getItem("scrollPath");
     if (scrollPath) {
@@ -60,6 +86,7 @@ const Navbar = () => {
 
     return () => {
       window.removeEventListener("scroll", handleScroll);
+      window.removeEventListener("resize", measureSections);
     };
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, []);
@@ -109,12 +136,26 @@ const Navbar = () => {
     >
       <div className={colorChange ? "px-4" : ""}>
         <div
-          className={`relative mx-auto flex items-center justify-between transition-all duration-500 ${
+          className={`relative mx-auto flex items-center justify-between transition-[max-width,margin,padding] duration-500 ${
             colorChange
-              ? "mt-3 max-w-3xl rounded-full glass-nav shadow-glass-lg px-5 py-2.5"
+              ? "mt-3 max-w-3xl px-5 py-2.5"
               : "max-w-screen-xl px-4 py-3 md:px-8 md:py-5"
           }`}
         >
+          {/*
+            The glass material is its own layer, separate from the box
+            above whose size/margin is animating. backdrop-filter can't be
+            smoothly interpolated between "none" and "blur(20px)" - toggling
+            it on the same element that's also resizing is what produced a
+            seam along the bottom edge mid-transition. Here it's always
+            present and only crossfades via opacity, which is safe.
+          */}
+          <div
+            className={`absolute inset-0 -z-10 rounded-full glass-nav shadow-glass-lg transition-opacity duration-500 ${
+              colorChange ? "opacity-100" : "opacity-0"
+            }`}
+          />
+
           <motion.a
             href="Top"
             whileTap={{ scale: 0.92 }}
diff --git a/src/Components/Pages/Hero/Hero.tsx b/src/Components/Pages/Hero/Hero.tsx
index bf2ccda..5c4f2d9 100644
--- a/src/Components/Pages/Hero/Hero.tsx
+++ b/src/Components/Pages/Hero/Hero.tsx
@@ -7,6 +7,11 @@ const Hero = () => {
   const { t, i18n } = useTranslation();
   const prefersReducedMotion = useReducedMotion();
 
+  // Browsers report region variants (e.g. "en-US", "pt-BR"), not just the
+  // bare "en"/"pt" i18next is configured with - matching on that exactly
+  // would pick the wrong sized text class for most real visitors.
+  const currentLang = i18n.language?.startsWith("pt") ? "pt" : "en";
+
   const handleNavigation = (path: string) => {
     const element = document.getElementById(path);
     const navbarHeight = 110;
@@ -51,13 +56,13 @@ const Hero = () => {
           />
           <div>
             <motion.h1
-              className={i18n.language === "en" ? "hero-text" : "hero-text-pt"}
+              className={currentLang === "en" ? "hero-text" : "hero-text-pt"}
               {...rise(0.05)}
             >
               {t("hero.heading.part1")}
             </motion.h1>
             <motion.h1
-              className={i18n.language === "en" ? "hero-text" : "hero-text-pt"}
+              className={currentLang === "en" ? "hero-text" : "hero-text-pt"}
               {...rise(0.1)}
             >
               <span className="gold-text">{t("hero.heading.part2")}</span>
@@ -69,7 +74,7 @@ const Hero = () => {
           <motion.div className="mx-5 lg:mx-0" {...rise(0.15)}>
             <h2
               className={
-                i18n.language === "en"
+                currentLang === "en"
                   ? "hero-sub-text mt-4 md:mt-10"
                   : "hero-sub-text-pt mt-4 md:mt-10"
               }
@@ -78,7 +83,7 @@ const Hero = () => {
             </h2>
             <h2
               className={
-                i18n.language === "en" ? "hero-sub-text" : "hero-sub-text-pt"
+                currentLang === "en" ? "hero-sub-text" : "hero-sub-text-pt"
               }
             >
               {t("hero.subheading.part2")}
diff --git a/src/index.css b/src/index.css
index a01314b..e8bf19f 100644
--- a/src/index.css
+++ b/src/index.css
@@ -121,7 +121,7 @@ body {
   background: rgba(10, 10, 13, 0.55);
   backdrop-filter: blur(20px) saturate(180%);
   -webkit-backdrop-filter: blur(20px) saturate(180%);
-  border-bottom: 1px solid rgba(250, 204, 151, 0.1);
+  border: 1px solid rgba(250, 204, 151, 0.1);
 }
 
 /* Heavier material for full takeover surfaces (mobile menu sheet) — a