/* CSS Reset and Base Styles */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    /* Optimize font loading */
    font-display: swap;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
    /* Improve text rendering */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    /* Optimize scrolling performance */
    -webkit-overflow-scrolling: touch;
}

/* Design System - Color Palette */
:root {
    /* Primary Colors */
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-primary-light: #dbeafe;
    
    /* Secondary Colors */
    --color-secondary: #64748b;
    --color-secondary-light: #f1f5f9;
    
    /* Accent Colors */
    --color-accent: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    
    /* Neutral Colors */
    --color-text: #1e293b;
    --color-text-light: #64748b;
    --color-background: #ffffff;
    --color-background-alt: #f8fafc;
    --color-border: #e2e8f0;
    
    /* Typography */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Spacing (8px base unit) */
    --space-1: 0.5rem;   /* 8px */
    --space-2: 1rem;     /* 16px */
    --space-3: 1.5rem;   /* 24px */
    --space-4: 2rem;     /* 32px */
    --space-6: 3rem;     /* 48px */
    --space-8: 4rem;     /* 64px */
    --space-12: 6rem;    /* 96px */
    
    /* Layout */
    --container-max-width: 1200px;
    --border-radius: 0.5rem;
    --border-radius-lg: 0.75rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

/* Container and Grid System */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-2);
    width: 100%;
    box-sizing: border-box;
    overflow-x: hidden; /* Prevent horizontal overflow */
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    margin-bottom: var(--space-2);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--space-2);
}

/* Button Components */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: 44px; /* Accessibility: minimum touch target */
}

.btn--primary {
    background-color: var(--color-primary);
    color: white;
}

.btn--primary:hover {
    background-color: var(--color-primary-hover);
}

.btn--secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn--secondary:hover {
    background-color: var(--color-primary);
    color: white;
}

/* Header Styles */
.header {
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    transition: box-shadow 0.2s ease;
}

.header--scrolled {
    box-shadow: var(--shadow-md);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-2);
    padding-bottom: var(--space-2);
}

.header__brand {
    display: flex;
    flex-direction: column;
}

.header__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin-bottom: 0;
}

.header__attribution {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-bottom: 0;
}

.header__nav {
    display: none;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--space-4);
}

.nav-link {
    text-decoration: none;
    color: var(--color-text);
    font-weight: var(--font-weight-medium);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--border-radius);
    transition: all 0.2s ease;
}

.nav-link:hover,
.nav-link--active {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--color-background) 0%, var(--color-background-alt) 100%);
    padding: var(--space-8) 0;
}

.hero__content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero__title {
    font-size: var(--font-size-4xl);
    color: var(--color-text);
    margin-bottom: var(--space-3);
}

.hero__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    margin-bottom: var(--space-6);
}

.hero__models {
    display: grid;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.model-card {
    background: white;
    padding: var(--space-4);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    text-align: left;
}

.model-card__title {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    margin-bottom: var(--space-2);
}

.model-card__description {
    color: var(--color-text-light);
    margin-bottom: var(--space-3);
}

.model-card__specs {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.spec-tag {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

.hero__cta {
    display: flex;
    gap: var(--space-3);
    justify-content: center;
    flex-wrap: wrap;
}

/* Main Content Sections */
.main {
    padding: var(--space-8) 0;
    width: 100%;
    overflow-x: hidden; /* Prevent horizontal scroll */
}

.section {
    padding: var(--space-8) 0;
    width: 100%;
    box-sizing: border-box;
}

.section:nth-child(even) {
    background-color: var(--color-background-alt);
}

.section__title {
    text-align: center;
    margin-bottom: var(--space-4);
    color: var(--color-text);
    word-wrap: break-word;
}

.section__description {
    text-align: center;
    color: var(--color-text-light);
    font-style: italic;
    word-wrap: break-word;
}

/* Footer */
.footer {
    background-color: var(--color-text);
    color: white;
    padding: var(--space-4) 0;
    text-align: center;
}

.footer__text {
    margin-bottom: 0;
    font-size: var(--font-size-sm);
}

/* Responsive Design */
@media (min-width: 640px) {
    .container {
        padding: 0 var(--space-4);
    }
    
    .hero__models {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero__cta {
        flex-wrap: nowrap;
    }
}

@media (min-width: 768px) {
    .header__nav {
        display: block;
    }
    
    .hero__title {
        font-size: var(--font-size-4xl);
    }
    
    .hero__subtitle {
        font-size: var(--font-size-xl);
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--space-6);
    }
    
    .hero {
        padding: var(--space-12) 0;
    }
    
    .section {
        padding: var(--space-12) 0;
    }
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for keyboard navigation */
.btn:focus,
.nav-link:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --color-text: #000000;
        --color-background: #ffffff;
        --color-border: #000000;
    }
}

/* Enhanced keyboard navigation styles */
.keyboard-navigation .btn:focus,
.keyboard-navigation .nav-link:focus {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

/* Screen reader only class */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Hardware Requirements Section */
.hardware-cards {
    display: grid;
    gap: var(--space-4);
    margin-bottom: var(--space-8);
    width: 100%;
}

.hardware-card {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    overflow: visible; /* Changed from hidden to visible to prevent content cutoff */
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    min-height: fit-content;
    width: 100%;
}

.hardware-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.hardware-card__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start; /* Changed to flex-start for better alignment */
    padding: var(--space-4);
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-secondary-light) 100%);
    border-bottom: 1px solid var(--color-border);
    flex-wrap: wrap; /* Allow wrapping on smaller screens */
    gap: var(--space-2);
}

.hardware-card__title {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    margin-bottom: 0;
    flex: 1;
    min-width: 0; /* Prevent text overflow */
}

.hardware-card__badge {
    padding: var(--space-1) var(--space-2);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap; /* Prevent badge text wrapping */
    flex-shrink: 0;
}

.hardware-card__badge--recommended {
    background-color: var(--color-accent);
    color: white;
}

.hardware-card__badge--enterprise {
    background-color: var(--color-warning);
    color: white;
}

.hardware-card__content {
    padding: var(--space-4);
    width: 100%;
    box-sizing: border-box;
}

.hardware-specs {
    margin-bottom: var(--space-4);
    width: 100%;
}

.spec-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start; /* Changed to flex-start for better text alignment */
    padding: var(--space-2) 0;
    border-bottom: 1px solid var(--color-border);
    gap: var(--space-2); /* Add gap between label and value */
    flex-wrap: wrap; /* Allow wrapping on very small screens */
}

.spec-item:last-child {
    border-bottom: none;
}

.spec-item__label {
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    flex: 1;
    min-width: 0; /* Prevent overflow */
    word-wrap: break-word;
}

.spec-item__value {
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    text-align: right;
    flex-shrink: 0;
    word-wrap: break-word;
}

.performance-info {
    width: 100%;
    box-sizing: border-box;
}

.performance-info__title {
    font-size: var(--font-size-lg);
    color: var(--color-text);
    margin-bottom: var(--space-2);
    word-wrap: break-word;
}

.performance-list {
    list-style: none;
    padding: 0;
    width: 100%;
}

.performance-list li {
    padding: var(--space-1) 0;
    color: var(--color-text-light);
    position: relative;
    padding-left: var(--space-3);
    word-wrap: break-word;
    line-height: 1.5;
}

.performance-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
    top: var(--space-1);
}

/* Compatibility Checker */
.compatibility-checker {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--space-6);
    margin-bottom: var(--space-8);
    width: 100%;
    box-sizing: border-box;
    overflow: visible; /* Ensure content is not clipped */
}

.compatibility-checker__title {
    font-size: var(--font-size-2xl);
    color: var(--color-text);
    text-align: center;
    margin-bottom: var(--space-2);
    word-wrap: break-word;
}

.compatibility-checker__description {
    text-align: center;
    color: var(--color-text-light);
    margin-bottom: var(--space-6);
    word-wrap: break-word;
}

.hardware-form {
    max-width: 800px;
    margin: 0 auto;
}

.form-grid {
    display: grid;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-label {
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    margin-bottom: var(--space-1);
    font-size: var(--font-size-sm);
}

.form-select {
    padding: var(--space-2) var(--space-3);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    background-color: white;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    min-height: 44px;
}

.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-select:invalid {
    border-color: var(--color-error);
}

.compatibility-checker__submit {
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
    display: block;
}

/* Compatibility Results */
.compatibility-results {
    margin-top: var(--space-6);
    padding: var(--space-4);
    background: var(--color-background-alt);
    border-radius: var(--border-radius-lg);
    border-left: 4px solid var(--color-primary);
}

.results-content {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.result-card {
    background: white;
    padding: var(--space-4);
    border-radius: var(--border-radius);
    margin-bottom: var(--space-3);
    box-shadow: var(--shadow-sm);
}

.result-card:last-child {
    margin-bottom: 0;
}

.result-card__header {
    display: flex;
    align-items: center;
    margin-bottom: var(--space-2);
}

.result-card__title {
    font-size: var(--font-size-lg);
    margin-bottom: 0;
    margin-right: var(--space-2);
}

.result-status {
    padding: var(--space-1) var(--space-2);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
}

.result-status--compatible {
    background-color: var(--color-accent);
    color: white;
}

.result-status--limited {
    background-color: var(--color-warning);
    color: white;
}

.result-status--incompatible {
    background-color: var(--color-error);
    color: white;
}

.result-card__content {
    color: var(--color-text-light);
}

.result-recommendations {
    margin-top: var(--space-4);
}

.result-recommendations__title {
    font-size: var(--font-size-lg);
    color: var(--color-text);
    margin-bottom: var(--space-2);
}

.recommendation-list {
    list-style: none;
    padding: 0;
}

.recommendation-list li {
    padding: var(--space-1) 0;
    padding-left: var(--space-3);
    position: relative;
    color: var(--color-text-light);
}

.recommendation-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: var(--font-weight-bold);
}

/* CPU Guidance Section */
.cpu-guidance {
    background: linear-gradient(135deg, var(--color-background-alt) 0%, white 100%);
    border-radius: var(--border-radius-lg);
    padding: var(--space-6);
    box-shadow: var(--shadow-md);
    width: 100%;
    box-sizing: border-box;
    overflow: visible; /* Ensure content is not clipped */
}

.cpu-guidance__title {
    font-size: var(--font-size-2xl);
    color: var(--color-text);
    text-align: center;
    margin-bottom: var(--space-4);
    word-wrap: break-word;
}

.cpu-guidance__content {
    max-width: 1000px;
    margin: 0 auto;
    width: 100%;
}

.cpu-guidance__info {
    margin-bottom: var(--space-6);
}

.cpu-guidance__info h4 {
    color: var(--color-text);
    margin-bottom: var(--space-2);
}

.cpu-guidance__list {
    list-style: none;
    padding: 0;
}

.cpu-guidance__list li {
    padding: var(--space-2) 0;
    padding-left: var(--space-3);
    position: relative;
    color: var(--color-text-light);
    border-bottom: 1px solid var(--color-border);
}

.cpu-guidance__list li:last-child {
    border-bottom: none;
}

.cpu-guidance__list li::before {
    content: "⚠";
    position: absolute;
    left: 0;
    color: var(--color-warning);
}

.cpu-guidance__recommendations {
    margin-bottom: var(--space-6);
}

.cpu-guidance__recommendations h4 {
    color: var(--color-text);
    margin-bottom: var(--space-3);
}

.tip-cards {
    display: grid;
    gap: var(--space-3);
}

.tip-card {
    background: white;
    padding: var(--space-3);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--color-accent);
}

.tip-card__title {
    font-size: var(--font-size-base);
    color: var(--color-text);
    margin-bottom: var(--space-1);
}

.tip-card__content {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-bottom: 0;
}

.cpu-guidance__tools h4 {
    color: var(--color-text);
    margin-bottom: var(--space-3);
}

.tool-recommendations {
    display: grid;
    gap: var(--space-2);
}

.tool-rec {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2);
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.tool-rec__name {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
}

.tool-rec__rating {
    color: var(--color-warning);
    font-size: var(--font-size-sm);
}

.tool-rec__note {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    text-align: right;
}

/* Additional styles for compatibility results */
.results-header {
    text-align: center;
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-2);
    border-bottom: 2px solid var(--color-primary);
    width: 100%;
    box-sizing: border-box;
}

.results-header h3 {
    color: var(--color-primary);
    margin-bottom: 0;
    word-wrap: break-word;
}

.tool-recommendations-inline {
    margin-top: var(--space-2);
    padding-top: var(--space-2);
    border-top: 1px solid var(--color-border);
}

.tool-rec-inline {
    display: inline-block;
    margin-right: var(--space-2);
    padding: var(--space-1);
    background: var(--color-background-alt);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

.tool-rec-inline:last-child {
    margin-right: 0;
}

/* Responsive Design for Hardware Section */
@media (min-width: 640px) {
    .form-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tip-cards {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    
    .hardware-card__header {
        flex-wrap: nowrap; /* Prevent wrapping on larger screens */
    }
}

@media (min-width: 768px) {
    .hardware-cards {
        grid-template-columns: repeat(2, 1fr);
        align-items: start; /* Align cards to top to prevent height issues */
    }
    
    .form-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .spec-item {
        flex-wrap: nowrap; /* Prevent wrapping on larger screens */
    }
}

@media (min-width: 1024px) {
    .form-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .hardware-cards {
        gap: var(--space-6); /* Increase gap on larger screens */
    }
}

/* Additional responsive fixes for very small screens */
@media (max-width: 480px) {
    .hardware-card__header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-2);
    }
    
    .hardware-card__badge {
        align-self: flex-end;
    }
    
    .spec-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-1);
    }
    
    .spec-item__value {
        text-align: left;
    }
    
    .compatibility-checker {
        padding: var(--space-4);
    }
}/* Tool
 Comparison Section */
.tool-comparison {
    margin-bottom: var(--space-8);
}

.comparison-table-wrapper {
    overflow-x: auto;
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--space-6);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 800px;
}

.comparison-table th,
.comparison-table td {
    padding: var(--space-3);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.comparison-table th {
    background-color: var(--color-background-alt);
    font-weight: var(--font-weight-semibold);
    position: sticky;
    top: 0;
    z-index: 10;
}

.feature-column {
    width: 200px;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
}

.tool-column {
    width: 200px;
    text-align: center;
}

.tool-column--featured {
    background-color: var(--color-primary-light);
}

.tool-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
}

.tool-name {
    font-size: var(--font-size-lg);
    margin-bottom: 0;
    color: var(--color-text);
}

.tool-badge {
    padding: var(--space-1) var(--space-2);
    border-radius: var(--border-radius);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    background-color: var(--color-secondary);
    color: white;
}

.tool-badge--featured {
    background-color: var(--color-primary);
}

.feature-name {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
}

.feature-value {
    text-align: center;
}

.rating {
    font-size: var(--font-size-lg);
    color: var(--color-warning);
    margin-bottom: var(--space-1);
}

.rating-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    display: block;
}

.use-case {
    font-size: var(--font-size-sm);
    color: var(--color-text);
    font-weight: var(--font-weight-medium);
}

/* Tool Recommendation Engine */
.tool-recommendation-engine {
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-secondary-light) 100%);
    border-radius: var(--border-radius-lg);
    padding: var(--space-6);
    margin-bottom: var(--space-8);
}

.recommendation-engine__title {
    text-align: center;
    color: var(--color-primary);
    margin-bottom: var(--space-2);
}

.recommendation-engine__description {
    text-align: center;
    color: var(--color-text-light);
    margin-bottom: var(--space-4);
}

.recommendation-cards {
    display: grid;
    gap: var(--space-4);
}

.recommendation-notice {
    text-align: center;
    padding: var(--space-4);
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.recommendation-notice p {
    margin-bottom: var(--space-3);
    color: var(--color-text-light);
}

/* Quick Tool Selection */
.quick-tool-selection {
    margin-bottom: var(--space-8);
}

.quick-selection__title {
    text-align: center;
    margin-bottom: var(--space-4);
    color: var(--color-text);
}

.tool-cards {
    display: grid;
    gap: var(--space-4);
}

.tool-card {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.tool-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.tool-card--featured {
    border: 2px solid var(--color-primary);
}

.tool-card__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4);
    background: var(--color-background-alt);
    border-bottom: 1px solid var(--color-border);
}

.tool-card--featured .tool-card__header {
    background: var(--color-primary-light);
}

.tool-card__name {
    font-size: var(--font-size-xl);
    color: var(--color-text);
    margin-bottom: 0;
}

.tool-card__badge {
    padding: var(--space-1) var(--space-2);
    border-radius: var(--border-radius);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    background-color: var(--color-accent);
    color: white;
}

.tool-card__content {
    padding: var(--space-4);
}

.tool-card__description {
    color: var(--color-text-light);
    margin-bottom: var(--space-3);
}

.tool-card__features {
    list-style: none;
    padding: 0;
    margin-bottom: var(--space-4);
}

.tool-card__features li {
    padding: var(--space-1) 0;
    padding-left: var(--space-3);
    position: relative;
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
}

.tool-card__features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: var(--font-weight-bold);
}

.tool-card__actions {
    display: flex;
    gap: var(--space-2);
}

.tool-card__actions .btn {
    flex: 1;
    text-align: center;
}

/* Tutorial Section */
.tutorial-nav {
    display: flex;
    justify-content: center;
    margin-bottom: var(--space-6);
    background: var(--color-background-alt);
    border-radius: var(--border-radius-lg);
    padding: var(--space-1);
    box-shadow: var(--shadow-sm);
}

.tutorial-nav__btn {
    flex: 1;
    padding: var(--space-2) var(--space-4);
    border: none;
    background: transparent;
    color: var(--color-text-light);
    font-weight: var(--font-weight-medium);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.2s ease;
}

.tutorial-nav__btn:hover {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.tutorial-nav__btn--active {
    background: var(--color-primary);
    color: white;
}

.tutorial-content {
    display: none;
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.tutorial-content--active {
    display: block;
}

.tutorial-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    color: white;
    padding: var(--space-6);
    text-align: center;
}

.tutorial-title {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-2);
}

.tutorial-subtitle {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    margin-bottom: var(--space-3);
}

.tutorial-meta {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    font-size: var(--font-size-sm);
}

.tutorial-difficulty,
.tutorial-time {
    padding: var(--space-1) var(--space-2);
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
}

.tutorial-steps {
    padding: var(--space-6);
}

.tutorial-step {
    margin-bottom: var(--space-8);
    border-left: 4px solid var(--color-primary-light);
    padding-left: var(--space-4);
}

.tutorial-step:last-child {
    margin-bottom: 0;
}

.step-header {
    display: flex;
    align-items: center;
    margin-bottom: var(--space-3);
}

.step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-primary);
    color: white;
    border-radius: 50%;
    font-weight: var(--font-weight-bold);
    margin-right: var(--space-3);
    flex-shrink: 0;
}

.step-title {
    font-size: var(--font-size-xl);
    color: var(--color-text);
    margin-bottom: 0;
}

.step-content {
    margin-left: 52px; /* Align with step title */
}

.download-links {
    display: grid;
    gap: var(--space-3);
    margin: var(--space-3) 0;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3);
    background: var(--color-primary);
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: background-color 0.2s ease;
}

.download-btn:hover {
    background: var(--color-primary-hover);
}

.download-icon {
    font-size: var(--font-size-xl);
}

.download-text {
    font-weight: var(--font-weight-medium);
}

.step-note,
.step-tip,
.step-success {
    padding: var(--space-3);
    border-radius: var(--border-radius);
    margin: var(--space-3) 0;
}

.step-note {
    background: var(--color-secondary-light);
    border-left: 4px solid var(--color-secondary);
}

.step-tip {
    background: var(--color-primary-light);
    border-left: 4px solid var(--color-primary);
}

.step-success {
    background: #dcfce7;
    border-left: 4px solid var(--color-accent);
}

.platform-instructions {
    margin: var(--space-3) 0;
}

.platform-tab {
    display: flex;
    gap: var(--space-1);
    margin-bottom: var(--space-3);
    background: var(--color-background-alt);
    border-radius: var(--border-radius);
    padding: var(--space-1);
}

.platform-btn {
    flex: 1;
    padding: var(--space-2);
    border: none;
    background: transparent;
    color: var(--color-text-light);
    font-weight: var(--font-weight-medium);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.2s ease;
}

.platform-btn:hover {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.platform-btn--active {
    background: var(--color-primary);
    color: white;
}

.platform-content {
    display: none;
}

.platform-content--active {
    display: block;
}

.instruction-list {
    padding-left: var(--space-4);
}

.instruction-list li {
    margin-bottom: var(--space-2);
    color: var(--color-text);
}

.sub-instruction-list {
    margin-top: var(--space-2);
    padding-left: var(--space-4);
}

.sub-instruction-list li {
    margin-bottom: var(--space-1);
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
}

.code-block {
    background: #1e293b;
    border-radius: var(--border-radius);
    overflow: hidden;
    margin: var(--space-3) 0;
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-2) var(--space-3);
    background: #334155;
    border-bottom: 1px solid #475569;
}

.code-language {
    font-size: var(--font-size-sm);
    color: #94a3b8;
    font-weight: var(--font-weight-medium);
}

.copy-btn {
    padding: var(--space-1) var(--space-2);
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: var(--font-size-xs);
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.copy-btn:hover {
    background: var(--color-primary-hover);
}

.code-content {
    padding: var(--space-3);
    margin: 0;
    color: #e2e8f0;
    font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    font-size: var(--font-size-sm);
    line-height: 1.5;
    overflow-x: auto;
}

.code-content code {
    background: none;
    padding: 0;
    color: inherit;
}

.model-downloads {
    display: grid;
    gap: var(--space-4);
    margin: var(--space-3) 0;
}

.model-download-card {
    background: var(--color-background-alt);
    border-radius: var(--border-radius);
    padding: var(--space-4);
    border: 1px solid var(--color-border);
}

.model-name {
    color: var(--color-primary);
    margin-bottom: var(--space-2);
}

.model-description {
    color: var(--color-text-light);
    margin-bottom: var(--space-3);
}

.model-variants {
    display: grid;
    gap: var(--space-2);
}

.variant-btn {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2);
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    text-decoration: none;
    color: var(--color-text);
    transition: all 0.2s ease;
}

.variant-btn:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.variant-name {
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
}

.variant-size {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    text-align: center;
}

.variant-note {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    text-align: right;
}

.test-examples {
    margin: var(--space-3) 0;
}

.test-example {
    margin-bottom: var(--space-4);
}

.test-title {
    color: var(--color-text);
    margin-bottom: var(--space-2);
}

.example-prompt {
    background: var(--color-accent);
    color: white;
    padding: var(--space-3);
    border-radius: var(--border-radius);
    margin: var(--space-2) 0;
}

.code-example {
    background: var(--color-background-alt);
    padding: var(--space-2);
    border-radius: var(--border-radius);
    font-family: monospace;
    font-size: var(--font-size-sm);
    margin: var(--space-2) 0;
}

.platform-solutions {
    display: grid;
    gap: var(--space-3);
    margin: var(--space-3) 0;
}

.platform-solution {
    background: var(--color-background-alt);
    padding: var(--space-3);
    border-radius: var(--border-radius);
}

.platform-solution h6 {
    color: var(--color-primary);
    margin-bottom: var(--space-2);
}

/* Troubleshooting Section */
.troubleshooting-search {
    max-width: 600px;
    margin: 0 auto var(--space-8);
}

.search-box {
    display: flex;
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.search-input {
    flex: 1;
    padding: var(--space-3);
    border: none;
    font-size: var(--font-size-base);
    outline: none;
}

.search-btn {
    padding: var(--space-3);
    background: var(--color-primary);
    color: white;
    border: none;
    cursor: pointer;
    font-size: var(--font-size-lg);
}

.search-results {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    margin-top: var(--space-2);
    max-height: 300px;
    overflow-y: auto;
}

.faq-section {
    margin-bottom: var(--space-8);
}

.faq-title {
    text-align: center;
    margin-bottom: var(--space-6);
    color: var(--color-text);
}

.faq-accordion {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.faq-category {
    border-bottom: 2px solid var(--color-border);
}

.faq-category:last-child {
    border-bottom: none;
}

.faq-category-title {
    background: var(--color-primary);
    color: white;
    padding: var(--space-3) var(--space-4);
    margin-bottom: 0;
    font-size: var(--font-size-lg);
}

.faq-item {
    border-bottom: 1px solid var(--color-border);
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4);
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.faq-question:hover {
    background: var(--color-background-alt);
}

.faq-question[aria-expanded="true"] {
    background: var(--color-primary-light);
}

.faq-question-text {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
}

.faq-toggle {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    transition: transform 0.2s ease;
}

.faq-question[aria-expanded="true"] .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    display: none;
    padding: 0 var(--space-4) var(--space-4);
    background: var(--color-background-alt);
}

.faq-answer--open {
    display: block;
}

.faq-answer-content {
    color: var(--color-text-light);
    line-height: 1.6;
}

.faq-answer-content ul,
.faq-answer-content ol {
    padding-left: var(--space-4);
    margin: var(--space-2) 0;
}

.faq-answer-content li {
    margin-bottom: var(--space-1);
}

.faq-tip,
.faq-warning {
    padding: var(--space-3);
    border-radius: var(--border-radius);
    margin: var(--space-3) 0;
}

.faq-tip {
    background: var(--color-primary-light);
    border-left: 4px solid var(--color-primary);
}

.faq-warning {
    background: #fef3c7;
    border-left: 4px solid var(--color-warning);
}

.optimization-tips {
    display: grid;
    gap: var(--space-4);
    margin: var(--space-3) 0;
}

.tip-category {
    background: white;
    padding: var(--space-3);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.tip-category h6 {
    color: var(--color-primary);
    margin-bottom: var(--space-2);
}

.context-recommendations {
    display: grid;
    gap: var(--space-3);
    margin: var(--space-3) 0;
}

.context-option {
    background: white;
    padding: var(--space-3);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.context-option h6 {
    color: var(--color-primary);
    margin-bottom: var(--space-1);
}

.context-option p {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    margin-bottom: 0;
}

/* Error Reference */
.error-reference {
    margin-bottom: var(--space-8);
}

.error-reference-title {
    text-align: center;
    margin-bottom: var(--space-6);
    color: var(--color-text);
}

.error-cards {
    display: grid;
    gap: var(--space-4);
}

.error-card {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    border-left: 4px solid var(--color-error);
}

.error-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4);
    background: var(--color-background-alt);
    border-bottom: 1px solid var(--color-border);
}

.error-title {
    font-size: var(--font-size-lg);
    color: var(--color-text);
    margin-bottom: 0;
}

.error-type {
    padding: var(--space-1) var(--space-2);
    background: var(--color-error);
    color: white;
    border-radius: var(--border-radius);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
}

.error-content {
    padding: var(--space-4);
}

.error-description {
    color: var(--color-text-light);
    margin-bottom: var(--space-3);
}

.error-solutions h5 {
    color: var(--color-text);
    margin-bottom: var(--space-2);
}

.error-solutions ul {
    padding-left: var(--space-4);
}

.error-solutions li {
    margin-bottom: var(--space-1);
    color: var(--color-text-light);
}

/* Additional Help */
.additional-help {
    background: linear-gradient(135deg, var(--color-background-alt) 0%, white 100%);
    border-radius: var(--border-radius-lg);
    padding: var(--space-6);
}

.help-title {
    text-align: center;
    margin-bottom: var(--space-6);
    color: var(--color-text);
}

.help-options {
    display: grid;
    gap: var(--space-6);
}

.help-option {
    text-align: center;
}

.help-option-title {
    color: var(--color-primary);
    margin-bottom: var(--space-2);
}

.help-option-description {
    color: var(--color-text-light);
    margin-bottom: var(--space-3);
}

.help-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    align-items: center;
}

.help-link {
    display: inline-block;
    padding: var(--space-2) var(--space-3);
    background: var(--color-primary);
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    transition: background-color 0.2s ease;
}

.help-link:hover {
    background: var(--color-primary-hover);
}

/* Responsive Design for New Sections */
@media (min-width: 640px) {
    .download-links {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
    
    .tool-cards {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
    
    .model-downloads {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
    
    .error-cards {
        grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    }
    
    .help-options {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    
    .help-links {
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
    }
}

@media (min-width: 768px) {
    .tutorial-nav {
        max-width: 600px;
        margin: 0 auto var(--space-6);
    }
    
    .platform-solutions {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    
    .optimization-tips {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    
    .context-recommendations {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .comparison-table-wrapper {
        overflow-x: visible;
    }
    
    .comparison-table {
        min-width: auto;
    }
    
    .tool-cards {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .recommendation-cards {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

/* Copy button feedback */
.copy-btn--copied {
    background: var(--color-accent) !important;
}

.copy-btn--copied::after {
    content: " ✓";
}

/* Search highlighting */
.search-highlight {
    background: yellow;
    padding: 1px 2px;
    border-radius: 2px;
}

/* Loading states */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.loading::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--color-primary);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Inline code styling */
code {
    background: var(--color-background-alt);
    padding: 2px 4px;
    border-radius: 3px;
    font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.9em;
    color: var(--color-primary);
}

/* Strong text in FAQ answers */
.faq-answer-content strong {
    color: var(--color-text);
    font-weight: var(--font-weight-semibold);
}

/* Error Cards for Troubleshooting */
.error-cards {
    display: grid;
    gap: var(--space-4);
    margin-top: var(--space-6);
}

.error-card {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    border-left: 4px solid var(--color-error);
}

.error-card__header {
    background: #fef2f2;
    padding: var(--space-4);
    border-bottom: 1px solid var(--color-border);
}

.error-title {
    font-size: var(--font-size-lg);
    color: var(--color-error);
    margin-bottom: var(--space-1);
    font-weight: var(--font-weight-semibold);
}

.error-code {
    font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    background: var(--color-background-alt);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--border-radius);
    display: inline-block;
}

.error-description {
    padding: var(--space-4);
    color: var(--color-text-light);
}

.error-solutions {
    padding: 0 var(--space-4) var(--space-4);
}

.error-solutions h5 {
    color: var(--color-text);
    margin-bottom: var(--space-2);
}

.error-solutions ul {
    padding-left: var(--space-4);
}

.error-solutions li {
    margin-bottom: var(--space-1);
    color: var(--color-text-light);
}

/* Model Download Cards */
.model-downloads {
    display: grid;
    gap: var(--space-4);
    margin: var(--space-4) 0;
}

.model-download-card {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.model-name {
    background: var(--color-primary-light);
    color: var(--color-primary);
    padding: var(--space-3) var(--space-4);
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
}

.model-description {
    padding: 0 var(--space-4);
    color: var(--color-text-light);
    margin: var(--space-2) 0;
}

.model-variants {
    padding: var(--space-4);
    display: grid;
    gap: var(--space-2);
}

.variant-btn {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3);
    background: var(--color-background-alt);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    text-decoration: none;
    transition: all 0.2s ease;
}

.variant-btn:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.variant-name {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
}

.variant-size {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    text-align: center;
}

.variant-note {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    text-align: right;
    font-style: italic;
}

/* Test Examples */
.test-examples {
    margin: var(--space-4) 0;
}

.test-example {
    background: var(--color-background-alt);
    border-radius: var(--border-radius);
    padding: var(--space-4);
    margin-bottom: var(--space-3);
}

.test-example:last-child {
    margin-bottom: 0;
}

.test-title {
    color: var(--color-primary);
    margin-bottom: var(--space-2);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
}

.example-prompt {
    background: white;
    border: 2px solid var(--color-primary-light);
    border-radius: var(--border-radius);
    padding: var(--space-3);
    margin: var(--space-2) 0;
}

.example-prompt strong {
    color: var(--color-primary);
}

/* Responsive Design for Model Downloads */
@media (min-width: 768px) {
    .model-downloads {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .error-cards {
        grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    }
}

@media (min-width: 1024px) {
    .variant-btn {
        grid-template-columns: 120px 80px 1fr;
    }
}

/* Additional Help Section */
.additional-help {
    margin-top: var(--space-8);
    padding-top: var(--space-6);
    border-top: 2px solid var(--color-border);
}

.help-title {
    text-align: center;
    color: var(--color-text);
    margin-bottom: var(--space-6);
}

.help-options {
    display: grid;
    gap: var(--space-6);
}

.help-option {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--space-6);
    text-align: center;
}

.help-option-title {
    color: var(--color-primary);
    margin-bottom: var(--space-2);
    font-size: var(--font-size-xl);
}

.help-option-description {
    color: var(--color-text-light);
    margin-bottom: var(--space-4);
}

.help-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.help-link {
    display: inline-block;
    padding: var(--space-2) var(--space-3);
    background: var(--color-primary-light);
    color: var(--color-primary);
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: var(--font-weight-medium);
    transition: all 0.2s ease;
}

.help-link:hover {
    background: var(--color-primary);
    color: white;
}

@media (min-width: 768px) {
    .help-options {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .help-links {
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
    }
}/
* Progress Indicators and Navigation Enhancements */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    z-index: 1001;
    transition: width 0.1s ease;
}

.section-indicator {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 8px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.section-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid var(--color-primary);
    background: transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.section-dot:hover {
    transform: scale(1.1);
    border-color: var(--color-primary-hover);
}

.section-dot:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.section-dot::after {
    content: attr(aria-label);
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--color-text);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.section-dot:hover::after,
.section-dot:focus::after {
    opacity: 1;
}

/* Enhanced Accessibility Styles */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--color-primary);
    color: white;
    padding: 8px 16px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 1000;
    transition: top 0.3s ease;
    font-weight: var(--font-weight-medium);
}

.skip-link:focus {
    top: 6px;
}

/* Enhanced focus styles for better keyboard navigation */
.keyboard-navigation *:focus {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: 2px;
}

.keyboard-navigation .btn:focus {
    outline-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.3);
}

.keyboard-navigation .nav-link:focus {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
}

/* High contrast mode improvements */
@media (prefers-contrast: high) {
    :root {
        --color-text: #000000;
        --color-background: #ffffff;
        --color-border: #000000;
        --color-primary: #0000ff;
        --color-accent: #008000;
        --color-error: #ff0000;
        --color-warning: #ff8c00;
    }
    
    .btn {
        border: 2px solid currentColor;
    }
    
    .hardware-card,
    .tool-card,
    .result-card {
        border: 2px solid var(--color-border);
    }
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .scroll-progress {
        transition: none;
    }
    
    .section-indicator {
        transition: none;
    }
    
    .section-dot {
        transition: none;
    }
}

/* Lazy loading styles */
.lazy-loading {
    opacity: 0;
    transition: opacity 0.3s ease;
    background: var(--color-background-alt);
    position: relative;
    overflow: hidden;
}

.lazy-loaded {
    opacity: 1;
}

.lazy-loading::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Enhanced form accessibility */
.form-group {
    position: relative;
}

.form-label {
    display: block;
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    margin-bottom: var(--space-1);
    font-size: var(--font-size-sm);
}

.form-label::after {
    content: " *";
    color: var(--color-error);
    font-weight: var(--font-weight-bold);
}

.form-select:required + .form-label::after,
.form-input:required + .form-label::after {
    content: " *";
}

.form-select:invalid,
.form-input:invalid {
    border-color: var(--color-error);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-select:valid,
.form-input:valid {
    border-color: var(--color-accent);
}

.form-error {
    color: var(--color-error);
    font-size: var(--font-size-sm);
    margin-top: var(--space-1);
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.form-error::before {
    content: "⚠";
    font-weight: var(--font-weight-bold);
}

/* Enhanced button states */
.btn {
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

.btn--loading {
    color: transparent;
}

.btn--loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 2px solid currentColor;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Enhanced copy button states */
.copy-btn {
    position: relative;
    transition: all 0.3s ease;
}

.copy-btn--copied {
    background-color: var(--color-accent) !important;
    transform: scale(0.95);
}

.copy-btn--copied::before {
    content: "✓";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: var(--font-size-lg);
    animation: checkmark 0.3s ease;
}

@keyframes checkmark {
    0% { transform: translate(-50%, -50%) scale(0); }
    50% { transform: translate(-50%, -50%) scale(1.2); }
    100% { transform: translate(-50%, -50%) scale(1); }
}

/* Enhanced modal and overlay styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal-overlay.show {
    opacity: 1;
    visibility: visible;
}

.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 1001;
    max-width: 90vw;
    max-height: 90vh;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal.show {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4);
    border-bottom: 1px solid var(--color-border);
}

.modal-title {
    margin: 0;
    color: var(--color-text);
}

.modal-close {
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    cursor: pointer;
    padding: var(--space-1);
    border-radius: var(--border-radius);
    transition: background-color 0.2s ease;
}

.modal-close:hover {
    background-color: var(--color-background-alt);
}

.modal-body {
    padding: var(--space-4);
}

/* Responsive design for accessibility features */
@media (max-width: 768px) {
    .section-indicator {
        right: 10px;
    }
    
    .section-dot {
        width: 10px;
        height: 10px;
    }
    
    .skip-link {
        left: 4px;
        padding: 6px 12px;
        font-size: var(--font-size-sm);
    }
}

@media (max-width: 480px) {
    .section-indicator {
        display: none;
    }
    
    .scroll-progress {
        height: 2px;
    }
}

/* Print styles for accessibility */
@media print {
    .scroll-progress,
    .section-indicator,
    .skip-link,
    .btn,
    .modal-overlay,
    .modal {
        display: none !important;
    }
    
    .section {
        page-break-inside: avoid;
    }
    
    .hardware-card,
    .tool-card {
        page-break-inside: avoid;
        border: 1px solid #000;
        margin-bottom: var(--space-2);
    }
}/* 
Performance Optimizations */
.header {
    will-change: transform, box-shadow;
    contain: layout style;
}

.scroll-progress {
    will-change: width;
    contain: layout style paint;
}

.section-indicator {
    will-change: opacity;
    contain: layout style;
}

.btn {
    will-change: transform, background-color;
}

.hardware-card:hover,
.tool-card:hover {
    will-change: transform, box-shadow;
}

/* Critical path CSS - Above the fold content */
.hero {
    contain: layout style;
}

.hero__title,
.hero__subtitle {
    contain: layout style paint;
}

/* Optimize animations for 60fps */
@media (prefers-reduced-motion: no-preference) {
    .btn::before {
        will-change: transform;
    }
    
    .lazy-loading::before {
        will-change: transform;
    }
}

/* GPU acceleration for smooth animations */
.modal {
    transform: translate3d(-50%, -50%, 0) scale(0.9);
    backface-visibility: hidden;
    perspective: 1000px;
}

.modal.show {
    transform: translate3d(-50%, -50%, 0) scale(1);
}

/* Optimize repaints */
.compatibility-results {
    contain: layout style;
}

.results-content {
    contain: layout;
}
/*
 Additional fixes for hardware compatibility display issues */
#hardware {
    min-height: fit-content;
    overflow: visible;
}

#hardware .container {
    overflow: visible;
}

.hardware-cards,
.compatibility-checker,
.cpu-guidance {
    position: relative;
    z-index: 1;
}

/* Ensure all text content is properly contained */
.hardware-card *,
.compatibility-checker *,
.cpu-guidance * {
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

/* Fix for very long text that might overflow */
.spec-item__label,
.spec-item__value {
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Ensure proper spacing and visibility */
.hardware-card__content > * {
    margin-bottom: var(--space-2);
}

.hardware-card__content > *:last-child {
    margin-bottom: 0;
}

/* Debug styles - remove these in production */
.hardware-card {
    border: 1px solid transparent; /* Helps with layout debugging */
}

/* Ensure compatibility checker form is properly sized */
.hardware-form {
    width: 100%;
    box-sizing: border-box;
}

.form-grid {
    width: 100%;
}

.form-group {
    width: 100%;
    min-width: 0;
}

/* Ensure buttons don't overflow */
.compatibility-checker__submit {
    max-width: 100%;
    box-sizing: border-box;
}