/* Universal Reset - Keep at top */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* Base Elements */
html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    font-size: 16px;
}

body {
    background-color: #ffffff;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.5;
    min-height: 100vh;
    overflow-x: hidden;
    contain: paint layout style;
    position: relative;
    backface-visibility: hidden;
}

/* Container Styles */
.container {
    width: 100%;
    max-width: 1536px;
    margin-left: auto;
    margin-right: auto;
    /* Mobile-first padding */
    padding-left: 1rem;
    padding-right: 1rem;
}

/* Media Queries - Correctly Ordered from Small to Large */
@media (min-width: 640px) {
    .container {
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }
}

@media (min-width: 768px) {
    .container {
        padding-left: 2rem;
        padding-right: 2rem;
    }
    
    /* Nav-link adjustments for desktop */
    .nav-link {
        min-width: 100px;
    }
}

@media (min-width: 1024px) {
    .container {
        padding-left: 2.5rem;
        padding-right: 2.5rem;
    }
    
    .form-heading {
        font-size: 2.5rem;
    }

    .form-input,
    .form-button {
        width: 50%;
        font-size: 1.25rem;
    }
}

@media (min-width: 1280px) {
    .container {
        padding-left: 3rem;
        padding-right: 3rem;
    }
}

@media (min-width: 1536px) {
    .container {
        padding-left: 4rem;
        padding-right: 4rem;
    }
}

/* Component Styles */
.hamburger {
    position: relative;
    z-index: 10;
    padding: 0.25rem;
}

.hamburger span {
    display: block;
    height: 0.125rem;
    background-color: #000000;
    margin-bottom: 0.25rem;
    transition: all 0.3s ease;
}

.hamburger span:last-child {
    margin-bottom: 0;
}

.hamburger:hover span:nth-child(2) {
    transform: scale(1.1);
}

/* Layout Components */
.home-container {
    width: 100%;
    max-width: calc(96rem + 2vw);
    margin: 0 auto; /* Changed from dynamic to static */
    padding: 1rem; /* Static first */
    min-height: 50vh; /* Reserve space */
    contain: layout paint style;
}

@media (min-width: 768px) {
    .home-container {
        padding: 1.5rem;
    }
}

/* Card System - CLS Optimized */
.card-set {
    height: 12rem;
    gap: 1.667rem;
    margin-bottom: 1.667rem;
    padding: 0.833rem;
    display: flex;
    contain: content; /* Isolate card rendering */
}

.col-img {
    width: 40%;
    aspect-ratio: 1/1; /* Critical for CLS */
    background: #f3f4f6; /* Fallback color */
}

.col-img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

/* Footer Grid - Prevent Wrapping Shifts */
#footer {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    background-color: #FEDE5C;
    contain: layout; /* Prevent footer-induced shifts */
}

/* Ad Containers - Strict Sizing */
.ad-container {
    overflow: hidden;
    min-height: 90px;
    aspect-ratio: 728/90;
}

.ad-card-side {
    width: 200px;
    height: 200px;
    margin: 0.5rem auto;
    contain: strict;
}

.ad-wide-skyscraper {
    width: 160px;
    height: 600px;
    margin: 15px auto;
    contain: strict;
}