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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #1e293b;
    background-color: #ffffff;
    overflow-x: hidden;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1rem;
    color: #64748b;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-family: inherit;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 48px;
}

.btn-primary {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px 0 rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    background: white;
    color: #3b82f6;
    border: 2px solid #3b82f6;
}

.btn-secondary:hover {
    background: #3b82f6;
    color: white;
    transform: translateY(-2px);
}

.btn-large {
    padding: 16px 32px;
    font-size: 18px;
    min-height: 56px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    padding: 80px 0 60px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23e2e8f0" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    text-align: center;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    color: #0f172a;
}

.highlight {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.125rem;
    color: #64748b;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 3rem;
    align-items: center;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 400px;
    margin: 0 auto;
}

.stat {
    text-align: center;
    padding: 20px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    color: #3b82f6;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 0.875rem;
    color: #64748b;
    font-weight: 500;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.tool-mockup {
    background: white;
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: transform 0.3s ease;
}

.tool-mockup:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.mockup-svg {
    width: 100%;
    max-width: 300px;
    height: auto;
}

/* Featured Tools Section */
.featured-tools {
    padding: 80px 0;
    background: white;
}

.section-title {
    text-align: center;
    font-size: 2.25rem;
    font-weight: 800;
    color: #0f172a;
    margin-bottom: 1rem;
}

.section-subtitle {
    text-align: center;
    font-size: 1.125rem;
    color: #64748b;
    margin-bottom: 3rem;
}

.tools-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.tool-card {
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    padding: 32px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.tool-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    border-color: #3b82f6;
}

.tool-card:hover::before {
    transform: scaleX(1);
}

.tool-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.tool-icon svg {
    width: 32px;
    height: 32px;
}

.tool-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 12px;
}

.tool-description {
    color: #64748b;
    margin-bottom: 20px;
    line-height: 1.6;
}

.tool-features {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.feature-tag {
    background: #f1f5f9;
    color: #475569;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

.tool-stats {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 20px;
    border-top: 1px solid #e2e8f0;
}

.usage-count {
    font-size: 0.875rem;
    color: #64748b;
    font-weight: 500;
}

.rating {
    display: flex;
    align-items: center;
    gap: 8px;
}

.stars {
    color: #fbbf24;
    font-size: 0.875rem;
}

.rating-text {
    font-size: 0.875rem;
    color: #64748b;
    font-weight: 600;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: white;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="%23374151" opacity="0.3"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>');
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    color: white;
}

.cta-description {
    font-size: 1.125rem;
    color: #cbd5e1;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.trust-elements {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 3rem;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.trust-icon {
    font-size: 2rem;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(59, 130, 246, 0.2);
    border-radius: 12px;
}

.trust-text {
    text-align: left;
}

.trust-text strong {
    display: block;
    color: white;
    font-weight: 600;
    margin-bottom: 4px;
}

.trust-text span {
    color: #cbd5e1;
    font-size: 0.875rem;
}

.social-proof {
    margin-top: 3rem;
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    align-items: center;
}

.testimonial {
    background: rgba(255, 255, 255, 0.05);
    padding: 24px;
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.testimonial p {
    font-style: italic;
    color: #e2e8f0;
    margin-bottom: 16px;
    font-size: 1.125rem;
}

.testimonial-author strong {
    color: white;
    font-weight: 600;
}

.testimonial-author span {
    color: #cbd5e1;
    font-size: 0.875rem;
    margin-left: 8px;
}

.user-count {
    text-align: center;
    padding: 24px;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 12px;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.count-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: #3b82f6;
    margin-bottom: 4px;
}

.count-label {
    color: #cbd5e1;
    font-size: 0.875rem;
    font-weight: 500;
}

/* Footer */
.footer {
    background: #f8fafc;
    padding: 40px 0 20px;
    border-top: 1px solid #e2e8f0;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 24px;
    text-align: center;
}

.footer-brand h3 {
    color: #0f172a;
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.footer-brand p {
    color: #64748b;
    font-size: 0.875rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.footer-links a {
    color: #64748b;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #3b82f6;
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid #e2e8f0;
}

.footer-bottom p {
    color: #94a3b8;
    font-size: 0.875rem;
    margin: 0;
}

/* Responsive Design */
@media (min-width: 640px) {
    .hero-buttons {
        flex-direction: row;
        justify-content: center;
    }
    
    .hero-stats {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .trust-elements {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .social-proof {
        grid-template-columns: 2fr 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr auto;
        text-align: left;
    }
    
    .footer-links {
        justify-content: flex-end;
    }
}

@media (min-width: 768px) {
    .hero {
        padding: 120px 0 80px;
    }
    
    .hero .container {
        grid-template-columns: 1fr 1fr;
        gap: 60px;
        align-items: center;
    }
    
    .hero-content {
        text-align: left;
    }
    
    .hero-title {
        font-size: 3.5rem;
    }
    
    .hero-description {
        margin-left: 0;
        margin-right: 0;
    }
    
    .hero-buttons {
        justify-content: flex-start;
    }
    
    .hero-stats {
        margin: 0;
    }
    
    .section-title {
        font-size: 3rem;
    }
    
    .tools-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .trust-elements {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .cta-title {
        font-size: 3.5rem;
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 40px;
    }
    
    .hero-title {
        font-size: 4rem;
    }
    
    .section-title {
        font-size: 3.5rem;
    }
    
    .cta-title {
        font-size: 4rem;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tool-card {
    animation: fadeInUp 0.6s ease forwards;
}

.tool-card:nth-child(1) { animation-delay: 0.1s; }
.tool-card:nth-child(2) { animation-delay: 0.2s; }
.tool-card:nth-child(3) { animation-delay: 0.3s; }

/* Focus states for accessibility */
.btn:focus,
.tool-card:focus {
    outline: 2px solid #3b82f6;
    outline-offset: 2px;
}

/* Ad Sections */
.ad-section {
    padding: 20px 0;
    background: #f8fafc;
    border-top: 1px solid #e2e8f0;
    border-bottom: 1px solid #e2e8f0;
}

.ad-banner {
    max-width: 728px;
    margin: 0 auto;
    min-height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ad-placeholder {
    background: #f1f5f9;
    border: 2px dashed #cbd5e1;
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    width: 100%;
    min-height: 90px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.ad-placeholder:hover {
    border-color: #94a3b8;
    background: #e2e8f0;
}

.ad-label {
    font-size: 0.75rem;
    color: #64748b;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.ad-content {
    color: #94a3b8;
    font-size: 0.875rem;
    font-style: italic;
}

/* Categories Page Styles */
.page-header {
    background: white;
    border-bottom: 1px solid #e2e8f0;
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo h1 {
    color: #0f172a;
    font-size: 1.5rem;
    font-weight: 800;
    margin: 0;
    text-decoration: none;
}

.logo {
    text-decoration: none;
}

.header-nav {
    display: flex;
    gap: 24px;
}

.header-nav a {
    color: #64748b;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.header-nav a:hover,
.header-nav a.active {
    color: #3b82f6;
}

.page-hero {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    padding: 60px 0 40px;
    text-align: center;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: #0f172a;
    margin-bottom: 1rem;
}

.page-subtitle {
    font-size: 1.125rem;
    color: #64748b;
    max-width: 600px;
    margin: 0 auto;
}

.categories-section {
    padding: 60px 0;
    background: white;
}

.category-group {
    margin-bottom: 60px;
}

.category-header {
    text-align: center;
    margin-bottom: 40px;
    padding: 40px 20px;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border-radius: 16px;
    border: 1px solid #e2e8f0;
}

.category-icon {
    font-size: 3rem;
    margin-bottom: 16px;
    display: block;
}

.category-title {
    font-size: 2rem;
    font-weight: 800;
    color: #0f172a;
    margin-bottom: 8px;
}

.category-description {
    font-size: 1.125rem;
    color: #64748b;
    margin: 0;
}

/* Responsive adjustments for ads */
@media (max-width: 768px) {
    .ad-banner {
        min-height: 50px;
    }
    
    .ad-placeholder {
        min-height: 50px;
        padding: 12px;
    }
    
    .ad-label {
        font-size: 0.625rem;
    }
    
    .ad-content {
        font-size: 0.75rem;
    }
}

@media (max-width: 480px) {
    .ad-section {
        padding: 12px 0;
    }
    
    .ad-banner {
        min-height: 50px;
    }
    
    .ad-placeholder {
        min-height: 50px;
        padding: 8px;
    }
}

/* QR Generator Tool Styles */
.tool-hero {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    padding: 60px 0 40px;
    text-align: center;
}

.tool-hero-content {
    max-width: 600px;
    margin: 0 auto;
}

.tool-icon-large {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.tool-icon-large svg {
    width: 40px;
    height: 40px;
}

.tool-section {
    padding: 60px 0;
    background: white;
}

.tool-container {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

.tool-input-section {
    background: #f8fafc;
    padding: 40px;
    border-radius: 16px;
    border: 1px solid #e2e8f0;
}

.tool-input-section h2 {
    color: #0f172a;
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.tool-input-section p {
    color: #64748b;
    margin-bottom: 32px;
}

.qr-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-group label {
    font-weight: 600;
    color: #374151;
    font-size: 0.875rem;
}

.input-group input {
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: white;
}

.input-group input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.input-group input.valid {
    border-color: #10b981;
}

.input-group input.invalid {
    border-color: #ef4444;
}

.input-hint {
    color: #64748b;
    font-size: 0.75rem;
    margin-top: 4px;
}

.options-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.option-row {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.option-row label {
    font-weight: 600;
    color: #374151;
    font-size: 0.875rem;
}

.option-row select {
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 16px;
    background: white;
    cursor: pointer;
    transition: border-color 0.3s ease;
}

.option-row select:focus {
    outline: none;
    border-color: #3b82f6;
}

.tool-output-section {
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    padding: 40px;
    text-align: center;
}

.qr-result h3 {
    color: #0f172a;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 24px;
}

.qr-display {
    background: white;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
    display: inline-block;
}

.qr-display canvas {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
}

.qr-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.qr-actions .btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
}

.qr-actions .btn svg {
    width: 16px;
    height: 16px;
}

.qr-info {
    background: #f8fafc;
    border-radius: 8px;
    padding: 20px;
    text-align: left;
}

.qr-info p {
    margin-bottom: 8px;
    color: #374151;
    font-size: 0.875rem;
}

.qr-info p:last-child {
    margin-bottom: 0;
}

.qr-info strong {
    color: #0f172a;
    font-weight: 600;
}

.qr-placeholder {
    padding: 60px 20px;
    color: #64748b;
}

.placeholder-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    background: #f1f5f9;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
}

.placeholder-icon svg {
    width: 32px;
    height: 32px;
}

.qr-placeholder h3 {
    color: #374151;
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.qr-placeholder p {
    color: #64748b;
    margin: 0;
}

/* Features Section */
.features-section {
    padding: 60px 0;
    background: #f8fafc;
}

.features-section h2 {
    text-align: center;
    font-size: 2.25rem;
    font-weight: 800;
    color: #0f172a;
    margin-bottom: 40px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.feature-card {
    background: white;
    padding: 32px 24px;
    border-radius: 12px;
    text-align: center;
    border: 1px solid #e2e8f0;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
    display: block;
}

.feature-card h3 {
    color: #0f172a;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.feature-card p {
    color: #64748b;
    margin: 0;
    line-height: 1.6;
}

/* Examples Section */
.examples-section {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid #e2e8f0;
}

.examples-section h4 {
    color: #374151;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.examples-grid {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.example-btn {
    padding: 8px 16px;
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 20px;
    font-size: 0.875rem;
    color: #64748b;
    cursor: pointer;
    transition: all 0.3s ease;
}

.example-btn:hover {
    background: #3b82f6;
    color: white;
    border-color: #3b82f6;
}

/* Messages */
.error-message,
.success-message {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 16px;
}

.error-message {
    background: #fef2f2;
    color: #dc2626;
    border: 1px solid #fecaca;
}

.success-message {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #f0fdf4;
    color: #16a34a;
    border: 1px solid #bbf7d0;
    z-index: 1000;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.error-message svg,
.success-message svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

/* Loading Spinner */
.spinner {
    width: 16px;
    height: 16px;
    margin-right: 8px;
}

.btn-loading {
    display: none;
    align-items: center;
}

/* Responsive Design */
@media (min-width: 768px) {
    .tool-container {
        grid-template-columns: 1fr 1fr;
        gap: 60px;
    }
    
    .options-group {
        grid-template-columns: 1fr 1fr;
    }
    
    .qr-actions {
        flex-direction: row;
    }
}

@media (max-width: 640px) {
    .tool-input-section,
    .tool-output-section {
        padding: 24px;
    }
    
    .options-group {
        grid-template-columns: 1fr;
    }
    
    .qr-actions {
        flex-direction: column;
    }
    
    .examples-grid {
        flex-direction: column;
    }
    
    .example-btn {
        text-align: center;
    }
}

/* Smooth scrolling for older browsers */
@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}