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

/* iOS Safe Area Support */
html {
    /* Smooth scrolling on iOS */
    -webkit-overflow-scrolling: touch;
}

body {
    /* Ensure content doesn't go under notch/home indicator */
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
}

:root {
    --primary-color: #0A2540;
    --secondary-color: #1A3A5C;
    --accent-color: #2E5C8A;
    --accent-light: #4A8BBE;
    --success-color: #10B981;
    --warning-color: #F59E0B;
    --danger-color: #DC2626;
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --text-light: #64748B;
    --bg-primary: #ffffff;
    --bg-secondary: #F8FAFC;
    --bg-alt: #F1F5F9;
    --border-color: #E2E8F0;
    --hover-color: #1E40AF;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    /* Category Colors */
    --category-governance: #7C3AED;
    --category-implementation: #2563EB;
    --category-skills: #059669;
    --category-ethics: #DC2626;
    --category-infrastructure: #EA580C;
    --category-scale: #CA8A04;
    --category-regulation: #6366F1;
    --category-finance: #0891B2;
    --category-strategy: #DB2777;
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --primary-color: #1E3A5F;
    --secondary-color: #2D4A6F;
    --accent-color: #60A5FA;
    --accent-light: #93C5FD;
    --text-primary: #F1F5F9;
    --text-secondary: #CBD5E1;
    --text-light: #94A3B8;
    --bg-primary: #0F172A;
    --bg-secondary: #1E293B;
    --bg-alt: #334155;
    --border-color: #475569;
    --hover-color: #93C5FD;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 10px 10px -5px rgba(0, 0, 0, 0.5);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography improvements */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.02em;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1rem;
}

strong {
    font-weight: 600;
    color: var(--text-primary);
}

a {
    color: var(--accent-color);
    transition: var(--transition);
}

a:hover {
    color: var(--hover-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem 0;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: white;
}

.logo-image {
    height: 40px;
    width: auto;
    filter: brightness(0) invert(1);
}

[data-theme="dark"] .logo-image {
    filter: brightness(0) invert(1);
}

.logo-text {
    font-size: 1.75rem;
    font-weight: 800;
    color: white;
    letter-spacing: -0.03em;
}

.logo-accent {
    color: #60A5FA;
    font-weight: 800;
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    padding: 0.5rem 0;
}

.nav-link:hover,
.nav-link.active {
    color: white;
    border-bottom: 2px solid #60a5fa;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 0.9375rem;
    letter-spacing: 0.01em;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, #60A5FA 0%, #3B82F6 100%);
    color: white;
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #3B82F6 0%, #2563EB 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: white;
}

.btn-secondary {
    background-color: transparent;
    color: white;
    border-color: rgba(255, 255, 255, 0.8);
}

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

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border-color: var(--border-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

/* Sections */
.section {
    padding: 4rem 0;
}

.section-alt {
    background-color: var(--bg-secondary);
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2rem;
    text-align: center;
    color: var(--text-primary);
}

.section-footer {
    text-align: center;
    margin-top: 2rem;
}

/* Quick Start Grid */
.quick-start-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.quick-start-card {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

.quick-start-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.quick-start-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.quick-start-card p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.card-link {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.card-link:hover {
    color: var(--hover-color);
}

/* Patterns Grid */
.patterns-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.pattern-card {
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 1.75rem;
    transition: var(--transition-slow);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.pattern-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--accent-color);
    opacity: 0;
    transition: var(--transition);
}

.pattern-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
    border-color: var(--accent-color);
}

.pattern-card:hover::before {
    opacity: 1;
}

.pattern-card.anti-pattern {
    border-color: #FEE2E2;
    background: linear-gradient(to bottom, #ffffff 0%, #FEF2F2 100%);
}

.pattern-card.anti-pattern::before {
    background: var(--danger-color);
}

.pattern-card-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 1rem;
}

.pattern-card-title {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    flex: 1;
    line-height: 1.3;
}

.pattern-card-link {
    text-decoration: none;
    color: inherit;
}

.pattern-card-link:hover .pattern-card-title {
    color: var(--accent-color);
}

.pattern-card-category {
    display: inline-block;
    background-color: var(--bg-alt);
    color: var(--text-secondary);
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.pattern-card-description {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    flex: 1;
}

.pattern-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.pattern-card-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
}

.pattern-card-link-btn {
    display: inline-block;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--hover-color) 100%);
    color: white;
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 700;
    padding: 0.625rem 1.25rem;
    border-radius: 8px;
    transition: var(--transition);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.pattern-card-link-btn:hover {
    background: linear-gradient(135deg, var(--hover-color) 0%, var(--primary-color) 100%);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

/* Audience Grid */
.audience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.audience-item {
    text-align: center;
    padding: 2rem;
}

.audience-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.audience-item p {
    color: var(--text-secondary);
}

/* Footer */
.footer {
    background-color: var(--primary-color);
    color: white;
    padding: 2rem 0;
    padding-bottom: calc(2rem + env(safe-area-inset-bottom));
    text-align: center;
}

.footer-subtitle {
    margin-top: 0.5rem;
    opacity: 0.8;
    font-size: 0.875rem;
}

/* Search and Filter Styles */
.search-section {
    background-color: var(--bg-secondary);
    padding: 2rem 0;
}

.search-container {
    max-width: 800px;
    margin: 0 auto;
}

.search-box {
    width: 100%;
    padding: 1rem 1.5rem;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    transition: var(--transition);
}

.search-box:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(15, 52, 96, 0.1);
}

.filters {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.filter-group {
    flex: 1;
    min-width: 200px;
}

.filter-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.filter-select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: white;
    font-size: 0.875rem;
}

/* Pattern Detail Page - Bold & Impactful */
.pattern-detail {
    max-width: 950px;
    margin: 0 auto;
    padding: 2.5rem 0;
}

.breadcrumb {
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.breadcrumb a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb span {
    color: var(--text-primary);
    font-weight: 700;
}

.pattern-detail-header {
    margin-bottom: 3rem;
    padding-bottom: 2.5rem;
    border-bottom: 3px solid var(--accent-color);
}

.pattern-detail-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-primary);
    line-height: 1.15;
    letter-spacing: -0.03em;
}

.pattern-detail-header .hero-subtitle {
    font-size: 1.5rem !important;
    font-weight: 500;
    color: var(--text-secondary) !important;
    margin-bottom: 2rem !important;
    font-style: italic;
}

.pattern-detail-meta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: center;
    margin-bottom: 1.5rem;
}

.pattern-detail-category {
    display: inline-block;
    background-color: var(--accent-color);
    color: white;
    padding: 0.625rem 1.25rem;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.9375rem;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.pattern-detail-complexity {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    font-weight: 600;
}

.pattern-detail-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}

.pattern-detail-tags .tag {
    font-size: 0.875rem;
    padding: 0.375rem 0.75rem;
    font-weight: 500;
}

.pattern-detail-content {
    line-height: 1.85;
    margin-bottom: 3rem;
}

.pattern-summary {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-alt) 100%);
    padding: 2.5rem;
    border-radius: 12px;
    margin-bottom: 3rem;
    border-left: 6px solid var(--accent-color);
    box-shadow: var(--shadow);
}

.pattern-description {
    font-size: 1.375rem;
    color: var(--text-primary);
    margin: 0;
    font-weight: 500;
    line-height: 1.6;
}

.pattern-section {
    margin-bottom: 3.5rem;
}

.pattern-section h2 {
    font-size: 2rem;
    font-weight: 800;
    margin-top: 0;
    margin-bottom: 1.25rem;
    color: var(--text-primary);
    padding-bottom: 0.75rem;
    border-bottom: 3px solid var(--border-color);
    letter-spacing: -0.02em;
}

.pattern-section h3 {
    font-size: 1.625rem;
    font-weight: 700;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.pattern-section p {
    margin-bottom: 1.25rem;
    color: var(--text-secondary);
    font-size: 1.125rem;
    line-height: 1.8;
}

.implementation-steps {
    margin-left: 0;
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
    padding-left: 0;
    list-style: none;
    counter-reset: step-counter;
}

.implementation-steps li {
    margin-bottom: 1.25rem;
    line-height: 1.7;
    font-size: 1.0625rem;
    padding-left: 3.5rem;
    position: relative;
    counter-increment: step-counter;
}

.implementation-steps li::before {
    content: counter(step-counter);
    position: absolute;
    left: 0;
    top: 0;
    width: 2.25rem;
    height: 2.25rem;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9375rem;
}

.pattern-detail-content ul,
.pattern-detail-content ol {
    margin-left: 2rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.pattern-detail-content li {
    margin-bottom: 0.5rem;
}

.related-patterns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.related-pattern-card {
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 1.75rem;
    transition: var(--transition-slow);
}

.related-pattern-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
    transform: translateY(-4px);
}

.related-pattern-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.related-pattern-link h4 {
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
}

.related-pattern-link p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.related-pattern-category {
    display: inline-block;
    background-color: var(--bg-alt);
    color: var(--text-secondary);
    padding: 0.375rem 0.875rem;
    border-radius: 6px;
    font-size: 0.8125rem;
    font-weight: 600;
}

.pattern-detail-actions {
    display: flex;
    gap: 1rem;
    margin-top: 3.5rem;
    padding-top: 2.5rem;
    border-top: 3px solid var(--border-color);
    flex-wrap: wrap;
}

.pattern-detail-actions .btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    padding: 1rem 1.75rem;
}

/* Key Insight Box - Bold & Impactful */
.key-insight-box {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 2rem 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.key-insight-box p {
    margin: 0;
    font-size: 1.375rem;
    font-weight: 700;
    color: white !important;
    line-height: 1.5;
}

/* Example Pattern Showcase (Homepage) */
.example-pattern-showcase {
    background: var(--bg-primary);
    border-radius: 16px;
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 2px solid var(--border-color);
    max-width: 900px;
    margin: 0 auto;
}

.example-pattern-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 2.5rem;
    color: white;
}

.example-pattern-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
    margin-bottom: 1.25rem;
}

.example-pattern-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    color: white;
    letter-spacing: -0.03em;
}

.example-pattern-tagline {
    font-size: 1.25rem;
    font-style: italic;
    opacity: 0.9;
    color: white;
}

.example-pattern-content {
    padding: 2.5rem;
}

.example-pattern-section {
    margin-bottom: 2rem;
}

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

.example-pattern-section h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.example-pattern-section p {
    color: var(--text-secondary);
    line-height: 1.8;
}

.example-steps {
    list-style: none;
    padding: 0;
    counter-reset: step-counter;
}

.example-steps li {
    position: relative;
    padding-left: 3rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.example-steps li::before {
    counter-increment: step-counter;
    content: counter(step-counter);
    position: absolute;
    left: 0;
    top: 0;
    width: 2rem;
    height: 2rem;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--hover-color) 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
}

.example-pattern-section.key-insight {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 2px solid var(--border-color);
}

.example-pattern-section.key-insight .key-insight-box {
    margin-top: 0.75rem;
}

.example-pattern-footer {
    padding: 1.5rem 2.5rem 2.5rem;
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

/* Print styles for pattern pages */
@media print {
    .header,
    .footer,
    .pattern-detail-actions,
    .breadcrumb {
        display: none;
    }
    
    .pattern-detail {
        max-width: 100%;
        padding: 0;
    }
    
    .pattern-detail-content {
        page-break-inside: avoid;
    }
    
    .pattern-section {
        page-break-inside: avoid;
        margin-bottom: 1.5rem;
    }
}

/* ========================================
   RESPONSIVE DESIGN - MOBILE OPTIMIZATION
   ======================================== */

/* Large tablets and small desktops */
@media (max-width: 1024px) {
    .container {
        padding: 0 1.5rem;
    }

    .pattern-detail {
        max-width: 100%;
        padding: 2rem 0;
    }

    .pattern-detail-title {
        font-size: 2.5rem;
    }

    .patterns-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.25rem;
    }
}

/* Tablets */
@media (max-width: 768px) {
    /* Base adjustments */
    body {
        font-size: 15px;
    }

    .container {
        padding: 0 1rem;
    }

    /* Header & Navigation */
    .header {
        padding: 0.75rem 0;
    }

    .header-content {
        flex-direction: column;
        gap: 0.75rem;
    }

    .logo {
        gap: 0.5rem;
    }

    .logo-image {
        height: 32px;
    }

    .logo-text {
        font-size: 1.5rem;
    }

    .nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.5rem 1rem;
    }

    .nav-link {
        padding: 0.5rem 0.75rem;
        font-size: 0.9rem;
    }

    .theme-toggle {
        width: 36px;
        height: 36px;
        font-size: 1.1rem;
    }

    /* Hero Section */
    .hero {
        padding: 2.5rem 0;
    }

    .hero-title {
        font-size: 1.75rem;
        margin-bottom: 0.75rem;
    }

    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 1.5rem;
    }

    .hero-actions {
        flex-direction: column;
        gap: 0.75rem;
    }

    .hero-actions .btn {
        width: 100%;
        justify-content: center;
    }

    /* Sections */
    .section {
        padding: 2.5rem 0;
    }

    .section-title {
        font-size: 1.5rem;
        margin-bottom: 1.5rem;
    }

    /* Buttons - Touch Friendly (min 44px) */
    .btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.9375rem;
        min-height: 44px;
    }

    .btn-primary,
    .btn-secondary,
    .btn-outline {
        width: 100%;
        text-align: center;
        justify-content: center;
    }

    /* Pattern Cards Grid */
    .patterns-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .pattern-card {
        padding: 1.25rem;
    }

    .pattern-card-title {
        font-size: 1.2rem;
    }

    .pattern-card-description {
        font-size: 0.9375rem;
        -webkit-line-clamp: 3;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .pattern-card-footer {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }

    .pattern-card-footer > div {
        display: flex;
        gap: 0.75rem;
        width: 100%;
    }

    .pattern-card-link-btn {
        flex: 1;
        text-align: center;
        padding: 0.75rem 1rem;
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .quick-view-btn {
        flex: 1;
        text-align: center;
        padding: 0.75rem 1rem;
        min-height: 44px;
    }

    .favorite-btn {
        font-size: 1.5rem;
        padding: 0.5rem;
        min-width: 44px;
        min-height: 44px;
    }

    /* Quick Start Grid */
    .quick-start-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .quick-start-card {
        padding: 1.5rem;
    }

    .card-icon {
        font-size: 2.5rem;
    }

    /* Audience Grid */
    .audience-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .audience-item {
        padding: 1.5rem;
    }

    /* Search & Filters */
    .search-section {
        padding: 1.5rem 0;
    }

    .search-box {
        padding: 1rem;
        font-size: 16px; /* Prevents iOS zoom */
    }

    .filters {
        flex-direction: column;
        gap: 0.75rem;
    }

    .filter-group {
        min-width: 100%;
    }

    .filter-select {
        padding: 0.875rem;
        font-size: 16px; /* Prevents iOS zoom */
        min-height: 44px;
    }

    .favorites-filter {
        justify-content: center;
        min-height: 44px;
    }

    /* Progress Bar */
    .progress-bar-container {
        padding: 1rem;
    }

    .progress-bar-header {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }

    /* Pattern Detail Page */
    .pattern-detail {
        padding: 1.5rem 0;
    }

    .breadcrumb {
        font-size: 0.8125rem;
        overflow-x: auto;
        white-space: nowrap;
        padding-bottom: 0.5rem;
        margin-bottom: 1rem;
    }

    .pattern-detail-header {
        margin-bottom: 2rem;
        padding-bottom: 1.5rem;
    }

    .pattern-detail-title {
        font-size: 1.75rem;
        margin-bottom: 0.75rem;
    }

    .pattern-detail-header .hero-subtitle {
        font-size: 1.125rem !important;
        margin-bottom: 1.25rem !important;
    }

    .pattern-detail-meta {
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .pattern-detail-category {
        padding: 0.5rem 0.875rem;
        font-size: 0.8125rem;
    }

    .pattern-detail-tags {
        margin-top: 0.75rem;
    }

    .pattern-detail-tags .tag {
        font-size: 0.8125rem;
        padding: 0.3rem 0.6rem;
    }

    /* Pattern Summary */
    .pattern-summary {
        padding: 1.5rem;
        margin-bottom: 2rem;
        border-left-width: 4px;
    }

    .pattern-description {
        font-size: 1.125rem;
    }

    /* Pattern Sections */
    .pattern-section {
        margin-bottom: 2.5rem;
    }

    .pattern-section h2 {
        font-size: 1.5rem;
        margin-bottom: 1rem;
        padding-bottom: 0.5rem;
    }

    .pattern-section p {
        font-size: 1rem;
    }

    /* Implementation Steps */
    .implementation-steps li {
        padding-left: 3rem;
        font-size: 1rem;
        margin-bottom: 1rem;
    }

    .implementation-steps li::before {
        width: 2rem;
        height: 2rem;
        font-size: 0.875rem;
    }

    /* Key Insight Box */
    .key-insight-box {
        padding: 1.5rem;
    }

    .key-insight-box p {
        font-size: 1.125rem;
    }

    /* Example Pattern Showcase */
    .example-pattern-showcase {
        border-radius: 12px;
    }

    .example-pattern-header {
        padding: 1.5rem;
    }

    .example-pattern-title {
        font-size: 1.5rem;
    }

    .example-pattern-tagline {
        font-size: 1.1rem;
    }

    .example-pattern-content {
        padding: 1.5rem;
    }

    .example-pattern-section h4 {
        font-size: 1rem;
    }

    .example-steps li {
        padding-left: 2.5rem;
    }

    .example-steps li::before {
        width: 1.75rem;
        height: 1.75rem;
        font-size: 0.8125rem;
    }

    .example-pattern-footer {
        padding: 1.25rem 1.5rem 1.5rem;
        flex-direction: column;
    }

    .example-pattern-footer .btn {
        width: 100%;
        justify-content: center;
    }

    /* Related Patterns */
    .related-patterns {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .related-pattern-card {
        padding: 1.25rem;
    }

    .related-pattern-link h4 {
        font-size: 1.125rem;
    }

    /* Pattern Detail Actions */
    .pattern-detail-actions {
        flex-direction: column;
        gap: 0.75rem;
        margin-top: 2.5rem;
        padding-top: 1.5rem;
    }

    .pattern-detail-actions .btn {
        width: 100%;
        justify-content: center;
    }

    /* Modal */
    .modal-overlay {
        padding: 0.5rem;
        align-items: flex-end;
    }

    .modal {
        max-height: 90vh;
        border-radius: 16px 16px 0 0;
        margin-bottom: 0;
    }

    .modal-header {
        padding: 1.25rem 1rem 1rem;
        position: sticky;
        top: 0;
        background: var(--bg-primary);
        z-index: 1;
    }

    .modal-header h2 {
        font-size: 1.25rem;
    }

    .modal-body {
        padding: 1rem;
    }

    .modal-footer {
        padding: 1rem;
        flex-direction: column;
        gap: 0.75rem;
        position: sticky;
        bottom: 0;
        background: var(--bg-primary);
    }

    .modal-footer .btn {
        width: 100%;
    }

    /* Browse Grid */
    .browse-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .browse-card {
        padding: 1.5rem;
    }

    .browse-card h3 {
        font-size: 1.25rem;
    }

    /* Back to Top Button */
    .back-to-top {
        bottom: 1.25rem;
        right: 1.25rem;
        width: 44px;
        height: 44px;
        font-size: 1.125rem;
    }

    /* Share Buttons */
    .share-buttons {
        justify-content: center;
        width: 100%;
    }

    .share-btn {
        width: 44px;
        height: 44px;
    }

    /* Footer */
    .footer {
        padding: 1.5rem 0;
    }

    .footer p {
        font-size: 0.875rem;
    }

    /* Complexity Dots */
    .complexity-dots {
        font-size: 0.8125rem;
    }

    .complexity-dots .dot {
        width: 7px;
        height: 7px;
    }

    /* Empty State */
    .empty-state {
        padding: 2rem 1rem;
    }

    .empty-state-icon {
        font-size: 3rem;
    }

    .empty-state h3 {
        font-size: 1.25rem;
    }

    .suggestions {
        flex-direction: column;
        align-items: center;
    }

    /* About Content */
    .about-content {
        padding: 0 0.5rem;
    }

    .about-content h2 {
        font-size: 1.5rem;
    }
}

/* Small phones */
@media (max-width: 480px) {
    .container {
        padding: 0 0.875rem;
    }

    .logo {
        gap: 0.375rem;
    }

    .logo-image {
        height: 28px;
    }

    .logo-text {
        font-size: 1.25rem;
    }

    .nav {
        gap: 0.375rem 0.625rem;
    }

    .nav-link {
        font-size: 0.8125rem;
        padding: 0.4rem 0.5rem;
    }

    .hero-title {
        font-size: 1.5rem;
    }

    .hero-subtitle {
        font-size: 0.9375rem;
    }

    .pattern-detail-title {
        font-size: 1.5rem;
    }

    .pattern-detail-header .hero-subtitle {
        font-size: 1rem !important;
    }

    .pattern-summary {
        padding: 1.25rem;
    }

    .pattern-description {
        font-size: 1rem;
    }

    .pattern-section h2 {
        font-size: 1.35rem;
    }

    .key-insight-box {
        padding: 1.25rem;
    }

    .key-insight-box p {
        font-size: 1rem;
    }

    /* Example Pattern Showcase */
    .example-pattern-header {
        padding: 1.25rem;
    }

    .example-pattern-meta {
        gap: 0.5rem;
    }

    .example-pattern-title {
        font-size: 1.25rem;
    }

    .example-pattern-tagline {
        font-size: 1rem;
    }

    .example-pattern-content {
        padding: 1.25rem;
    }

    .example-pattern-section {
        margin-bottom: 1.5rem;
    }

    .example-pattern-section h4 {
        font-size: 0.9375rem;
    }

    .example-steps li {
        padding-left: 2.25rem;
        font-size: 0.9375rem;
    }

    .example-steps li::before {
        width: 1.5rem;
        height: 1.5rem;
        font-size: 0.75rem;
    }

    .example-pattern-footer {
        padding: 1rem 1.25rem 1.25rem;
    }

    .pattern-card {
        padding: 1rem;
    }

    .pattern-card-title {
        font-size: 1.1rem;
    }

    .modal-header h2 {
        font-size: 1.125rem;
    }

    .section-title {
        font-size: 1.35rem;
    }

    /* Tags wrapping */
    .pattern-card-tags {
        display: none; /* Hide tags on very small screens to save space */
    }
}

/* Landscape orientation on mobile */
@media (max-width: 768px) and (orientation: landscape) {
    .hero {
        padding: 1.5rem 0;
    }

    .modal-overlay {
        align-items: center;
    }

    .modal {
        max-height: 85vh;
        border-radius: 12px;
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    /* Remove hover effects that don't work well on touch */
    .pattern-card:hover {
        transform: none;
    }

    .pattern-card:active {
        transform: scale(0.98);
    }

    .browse-card:hover {
        transform: none;
    }

    .browse-card:active {
        transform: scale(0.98);
    }

    .related-pattern-card:hover {
        transform: none;
    }

    .btn:hover {
        transform: none;
    }

    .btn:active {
        transform: scale(0.98);
    }

    /* Better tap targets */
    .pattern-card-link {
        display: block;
        padding: 0.25rem 0;
    }

    /* Scroll momentum */
    .modal-body {
        -webkit-overflow-scrolling: touch;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .pattern-card {
        border-width: 3px;
    }

    .btn {
        border-width: 3px;
    }

    .pattern-type-badge {
        border: 2px solid currentColor;
    }
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .skeleton {
        animation: none;
        background: var(--bg-alt);
    }
}

/* Loading State */
.loading {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Pattern Type Badges */
.pattern-type-badge {
    display: inline-block;
    padding: 0.375rem 0.75rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pattern-type-badge.pattern {
    background-color: #DCFCE7;
    color: #166534;
}

.pattern-type-badge.anti-pattern {
    background-color: #FEE2E2;
    color: #991B1B;
}

/* Category Color Coding */
.category-governance {
    --category-color: #7C3AED;
}

.category-implementation {
    --category-color: #2563EB;
}

.category-skills {
    --category-color: #059669;
}

.category-ethics {
    --category-color: #DC2626;
}

.category-infrastructure {
    --category-color: #EA580C;
}

.category-scale {
    --category-color: #CA8A04;
}

/* Improved readability */
.about-content h2 {
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-size: 1.75rem;
}

.about-content ul,
.about-content ol {
    margin-left: 1.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.about-content li {
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
}

.about-content strong {
    color: var(--text-primary);
}

/* Results count styling */
.results-count {
    font-weight: 600;
    color: var(--text-primary);
}

/* Complexity indicators */
.complexity-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.complexity-indicator.beginner {
    color: var(--success-color);
}

.complexity-indicator.intermediate {
    color: var(--warning-color);
}

.complexity-indicator.advanced {
    color: var(--danger-color);
}

/* ========================================
   Category Color Badges
   ======================================== */
.category-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.875rem;
    font-weight: 500;
    color: white;
}

.category-badge.governance,
.pattern-card-category.governance {
    background-color: var(--category-governance);
    color: white;
}

.category-badge.implementation,
.pattern-card-category.implementation {
    background-color: var(--category-implementation);
    color: white;
}

.category-badge.skills,
.pattern-card-category.skills {
    background-color: var(--category-skills);
    color: white;
}

.category-badge.ethics,
.pattern-card-category.ethics {
    background-color: var(--category-ethics);
    color: white;
}

.category-badge.infrastructure,
.pattern-card-category.infrastructure {
    background-color: var(--category-infrastructure);
    color: white;
}

.category-badge.scale,
.pattern-card-category.scale {
    background-color: var(--category-scale);
    color: white;
}

.category-badge.regulation,
.pattern-card-category.regulation {
    background-color: var(--category-regulation);
    color: white;
}

.category-badge.finance,
.pattern-card-category.finance {
    background-color: var(--category-finance);
    color: white;
}

.category-badge.strategy,
.pattern-card-category.strategy {
    background-color: var(--category-strategy);
    color: white;
}

/* ========================================
   Visual Complexity Dots
   ======================================== */
.complexity-dots {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
}

.complexity-dots .dots {
    display: inline-flex;
    gap: 3px;
}

.complexity-dots .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--border-color);
}

.complexity-dots.beginner .dot:nth-child(1) {
    background-color: var(--success-color);
}

.complexity-dots.intermediate .dot:nth-child(1),
.complexity-dots.intermediate .dot:nth-child(2) {
    background-color: var(--warning-color);
}

.complexity-dots.advanced .dot:nth-child(1),
.complexity-dots.advanced .dot:nth-child(2),
.complexity-dots.advanced .dot:nth-child(3) {
    background-color: var(--danger-color);
}

.complexity-dots .label {
    color: var(--text-secondary);
    font-weight: 500;
}

/* ========================================
   Loading Skeleton Animation
   ======================================== */
.skeleton {
    background: linear-gradient(90deg, var(--bg-alt) 25%, var(--bg-secondary) 50%, var(--bg-alt) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: 4px;
}

@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

.skeleton-card {
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 1.75rem;
}

.skeleton-card .skeleton-title {
    height: 24px;
    width: 70%;
    margin-bottom: 1rem;
}

.skeleton-card .skeleton-badge {
    height: 28px;
    width: 100px;
    margin-bottom: 0.75rem;
}

.skeleton-card .skeleton-text {
    height: 16px;
    width: 100%;
    margin-bottom: 0.5rem;
}

.skeleton-card .skeleton-text:last-child {
    width: 60%;
}

/* ========================================
   Enhanced Empty State
   ======================================== */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 2px dashed var(--border-color);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    opacity: 0.6;
}

.empty-state h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.empty-state .suggestions {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.empty-state .suggestion-chip {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.empty-state .suggestion-chip:hover {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

/* ========================================
   Improved Card Hover Effects
   ======================================== */
.pattern-card {
    transform: translateY(0);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.pattern-card:hover {
    transform: translateY(-6px) scale(1.01);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-color);
}

.pattern-card:hover .pattern-card-category {
    filter: brightness(1.1);
}

/* ========================================
   Dark Mode Toggle Button
   ======================================== */
.theme-toggle {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    padding: 0.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    color: white;
    font-size: 1.25rem;
    width: 40px;
    height: 40px;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
    display: none;
}

[data-theme="light"] .theme-toggle .icon-moon,
.theme-toggle .icon-moon {
    display: block;
}

[data-theme="dark"] .theme-toggle .icon-sun {
    display: block;
}

[data-theme="dark"] .theme-toggle .icon-moon {
    display: none;
}

/* ========================================
   Favorites System
   ======================================== */
.favorite-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 1.25rem;
    padding: 0.25rem;
    transition: var(--transition);
    color: var(--text-light);
    line-height: 1;
}

.favorite-btn:hover {
    transform: scale(1.2);
}

.favorite-btn.active {
    color: #EF4444;
}

.favorite-btn.active::before {
    content: '\2665';
}

.favorite-btn:not(.active)::before {
    content: '\2661';
}

.favorites-count {
    background: #EF4444;
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.125rem 0.5rem;
    border-radius: 10px;
    margin-left: 0.5rem;
}

.favorites-filter {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-alt);
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.favorites-filter:hover,
.favorites-filter.active {
    background: #FEE2E2;
    border-color: #EF4444;
}

.favorites-filter.active {
    color: #EF4444;
}

/* ========================================
   Quick View Modal
   ======================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    padding: 1rem;
}

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

.modal {
    background: var(--bg-primary);
    border-radius: 16px;
    max-width: 700px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    transform: translateY(20px) scale(0.95);
    transition: transform 0.3s ease;
    box-shadow: var(--shadow-xl);
}

.modal-overlay.active .modal {
    transform: translateY(0) scale(1);
}

.modal-header {
    padding: 1.5rem 1.5rem 1rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
}

.modal-header h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
    flex: 1;
}

.modal-close {
    background: transparent;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0.25rem;
    line-height: 1;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1rem 1.5rem 1.5rem;
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

/* ========================================
   Progress Tracking
   ======================================== */
.progress-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.progress-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}

.progress-badge.read {
    background: #DBEAFE;
    color: #1D4ED8;
}

.progress-badge.implemented {
    background: #DCFCE7;
    color: #166534;
}

[data-theme="dark"] .progress-badge.read {
    background: #1E3A5F;
    color: #93C5FD;
}

[data-theme="dark"] .progress-badge.implemented {
    background: #064E3B;
    color: #6EE7B7;
}

.progress-bar-container {
    background: var(--bg-secondary);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.progress-bar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.progress-bar-title {
    font-weight: 600;
    color: var(--text-primary);
}

.progress-bar-stats {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.progress-bar {
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--success-color), var(--accent-color));
    border-radius: 4px;
    transition: width 0.5s ease;
}

/* ========================================
   Share Functionality
   ======================================== */
.share-buttons {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
}

.share-btn:hover {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

.share-btn.copied {
    background: var(--success-color);
    color: white;
    border-color: var(--success-color);
}

/* ========================================
   Back to Top Button
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    bottom: calc(2rem + env(safe-area-inset-bottom));
    right: 2rem;
    right: calc(2rem + env(safe-area-inset-right));
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent-color);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease, background 0.2s ease;
    z-index: 1000;
    -webkit-tap-highlight-color: transparent;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--hover-color);
    transform: translateY(-2px);
}

.back-to-top:active {
    transform: scale(0.95);
}

/* ========================================
   Keyboard Navigation Highlight
   ======================================== */
.pattern-card.keyboard-focused {
    outline: 3px solid var(--accent-color);
    outline-offset: 2px;
}

/* ========================================
   Quick View Button
   ======================================== */
.quick-view-btn {
    background: transparent;
    border: 2px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.quick-view-btn:hover {
    background: var(--bg-alt);
    color: var(--text-primary);
    border-color: var(--text-secondary);
}

/* ========================================
   Dark Mode Specific Adjustments
   ======================================== */
[data-theme="dark"] .pattern-card {
    background: var(--bg-secondary);
}

[data-theme="dark"] .pattern-card.anti-pattern {
    background: linear-gradient(to bottom, var(--bg-secondary) 0%, #2D1F1F 100%);
    border-color: #4A2C2C;
}

[data-theme="dark"] .quick-start-card,
[data-theme="dark"] .browse-card {
    background: var(--bg-secondary);
}

[data-theme="dark"] .search-box,
[data-theme="dark"] .filter-select {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-color: var(--border-color);
}

[data-theme="dark"] .modal {
    background: var(--bg-secondary);
}

[data-theme="dark"] .skeleton {
    background: linear-gradient(90deg, var(--bg-secondary) 25%, var(--bg-alt) 50%, var(--bg-secondary) 75%);
    background-size: 200% 100%;
}

[data-theme="dark"] .empty-state {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .suggestion-chip {
    background: var(--bg-alt);
}

/* Dark mode transitions */
body {
    transition: background-color 0.3s ease, color 0.3s ease;
}

.header, .footer, .pattern-card, .quick-start-card, .browse-card, .search-box, .filter-select, .modal {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}