/* 
 * CaboRede.com.br - Premium Network Cables Landing Page
 * Responsive CSS with modern design, performance optimized
 * Color Palette: Neutral base + Deep Blue + Success Green
 */

/* CSS Variables for consistent theming */
:root {
    /* Colors */
    --primary-blue: #1e40af;
    --primary-blue-dark: #1e3a8a;
    --primary-blue-light: #3b82f6;
    --success-green: #10b981;
    --success-green-dark: #059669;
    --neutral-50: #f8fafc;
    --neutral-100: #f1f5f9;
    --neutral-200: #e2e8f0;
    --neutral-300: #cbd5e1;
    --neutral-400: #94a3b8;
    --neutral-500: #64748b;
    --neutral-600: #475569;
    --neutral-700: #334155;
    --neutral-800: #1e293b;
    --neutral-900: #0f172a;
    --charcoal: #2d3748;
    --charcoal-light: #4a5568;
    
    /* Typography */
    --font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
    --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-size-5xl: 3rem;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    
    /* 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);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease-out;
    --transition-normal: 0.3s ease-out;
    --transition-slow: 0.5s ease-out;
    
    /* Container */
    --container-max-width: 1200px;
    --container-padding: 1rem;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    line-height: 1.6;
}

body {
    font-family: var(--font-family);
    font-weight: var(--font-weight-normal);
    color: var(--charcoal);
    background-color: #fff;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Accessibility: Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* Container */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    color: var(--neutral-900);
    margin-bottom: var(--space-4);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

p {
    margin-bottom: var(--space-4);
    color: var(--charcoal-light);
}

a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-blue-dark);
}

a:focus-visible {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
    white-space: nowrap;
}

.btn:focus-visible {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

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

.btn-primary:hover {
    background-color: var(--primary-blue-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background-color: var(--primary-blue);
    color: white;
    transform: translateY(-1px);
}

.btn-large {
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-lg);
}

/* Section Styles */
section {
    padding: var(--space-12) 0;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--space-8);
}

.section-header h2 {
    margin-bottom: var(--space-4);
}

.section-header p {
    font-size: var(--font-size-xl);
    color: var(--charcoal-light);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--neutral-200);
    transition: all var(--transition-normal);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) 0;
}

.logo {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--primary-blue);
    text-decoration: none;
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-link {
    font-weight: var(--font-weight-medium);
    color: var(--charcoal);
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--primary-blue);
}

.cta-header {
    background: var(--primary-blue);
    color: white;
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
}

.cta-header:hover {
    background: var(--primary-blue-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: white;
}

/* Hero Section */
.hero {
    padding: calc(var(--space-20) + var(--space-8)) 0 var(--space-12);
    background: linear-gradient(135deg, var(--neutral-50) 0%, var(--neutral-200) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23e2e8f0' fill-opacity='0.4'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E") repeat;
    opacity: 0.5;
    z-index: 1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-text h1 {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-bold);
    color: var(--neutral-900);
    margin-bottom: var(--space-4);
    line-height: 1.1;
}

.hero-text .subhead {
    font-size: var(--font-size-xl);
    color: var(--charcoal-light);
    margin-bottom: var(--space-6);
    font-weight: var(--font-weight-medium);
}

.trust-badges {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
    margin-bottom: var(--space-6);
}

.badge {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: white;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--neutral-200);
}

.value-props {
    margin-bottom: var(--space-6);
}

.benefits-list {
    list-style: none;
    display: grid;
    gap: var(--space-2);
}

.benefits-list li {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-weight: var(--font-weight-medium);
    color: var(--charcoal);
}

.benefits-list li::before {
    content: '✓';
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: var(--success-green);
    color: white;
    border-radius: 50%;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    flex-shrink: 0;
}

.cta-group {
    display: flex;
    gap: var(--space-4);
    margin-top: var(--space-6);
}

.cta-primary,
.cta-secondary {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: all var(--transition-normal);
    white-space: nowrap;
}

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

.cta-primary:hover {
    background: var(--primary-blue-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: white;
}

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

.cta-secondary:hover {
    background: var(--primary-blue);
    color: white;
    transform: translateY(-2px);
}

.hero-image {
    position: relative;
}

.hero-image img {
    width: 100%;
    height: auto;
    aspect-ratio: 3/2;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    object-fit: cover;
}

/* Benefits Section */
.benefits {
    background: white;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-6);
}

.benefit-card {
    text-align: center;
    padding: var(--space-6);
    background: var(--neutral-50);
    border-radius: var(--radius-xl);
    border: 1px solid var(--neutral-200);
    transition: all var(--transition-normal);
}

.benefit-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-blue-light);
}

.benefit-icon {
    font-size: 3rem;
    margin-bottom: var(--space-4);
    display: block;
}

.benefit-card h3 {
    color: var(--neutral-900);
    margin-bottom: var(--space-3);
}

.benefit-card p {
    color: var(--charcoal-light);
    margin: 0;
}

/* Products Section */
.products {
    background: var(--neutral-50);
}

.product-tabs {
    max-width: 1000px;
    margin: 0 auto;
}

.tab-buttons {
    display: flex;
    justify-content: center;
    gap: var(--space-2);
    margin-bottom: var(--space-12);
    background: white;
    padding: var(--space-2);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
}

.tab-btn {
    padding: var(--space-3) var(--space-6);
    background: transparent;
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--charcoal);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.tab-btn:hover {
    background: var(--neutral-100);
    color: var(--primary-blue);
}

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

.tab-content {
    position: relative;
}

.tab-panel {
    display: none;
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--space-12);
    box-shadow: var(--shadow-md);
}

.tab-panel.active {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: center;
}

.product-info h3 {
    color: var(--neutral-900);
    margin-bottom: var(--space-6);
}

.specs {
    display: grid;
    gap: var(--space-3);
    margin-bottom: var(--space-8);
}

.spec {
    display: flex;
    padding: var(--space-3);
    background: var(--neutral-50);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-blue);
}

.spec strong {
    min-width: 120px;
    color: var(--neutral-900);
}

.product-variants h4 {
    color: var(--neutral-900);
    margin-bottom: var(--space-4);
}

.product-variants ul {
    list-style: none;
    display: grid;
    gap: var(--space-2);
}

.product-variants li {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--charcoal-light);
}

.product-variants li::before {
    content: '•';
    color: var(--primary-blue);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
}

.product-image img {
    width: 100%;
    height: auto;
    aspect-ratio: 4/3;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    object-fit: cover;
}

/* Quality Section */
.quality {
    background: white;
}

.quality-content {
    max-width: 1000px;
    margin: 0 auto;
}

.partner-badge {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    padding: var(--space-6);
    background: linear-gradient(135deg, var(--neutral-50) 0%, white 100%);
    border-radius: var(--radius-xl);
    border: 2px solid var(--neutral-200);
    margin-bottom: var(--space-8);
}

.partner-logo img {
    max-height: 80px;
    width: auto;
}

.partner-text h3 {
    color: var(--neutral-900);
    margin-bottom: var(--space-2);
}

.partner-text p {
    margin-bottom: var(--space-4);
}

.partner-text a {
    font-weight: var(--font-weight-semibold);
}

.trust-seal {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--success-green);
    color: white;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
}

.quality-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-6);
    margin-bottom: var(--space-8);
}

.quality-item {
    text-align: center;
    padding: var(--space-6);
    background: var(--neutral-50);
    border-radius: var(--radius-lg);
    border: 1px solid var(--neutral-200);
    transition: all var(--transition-normal);
}

.quality-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.quality-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-4);
    display: block;
}

.quality-item h4 {
    color: var(--neutral-900);
    margin-bottom: var(--space-3);
}

.quality-item p {
    color: var(--charcoal-light);
    margin: 0;
}

.comparison-section {
    background: var(--neutral-50);
    padding: var(--space-12);
    border-radius: var(--radius-xl);
}

.comparison-section h3 {
    text-align: center;
    margin-bottom: var(--space-8);
}

.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
}

.comparison-item {
    padding: var(--space-6);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.comparison-item h4 {
    text-align: center;
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-3);
    border-bottom: 2px solid var(--neutral-200);
}

.comparison-list {
    list-style: none;
    display: grid;
    gap: var(--space-3);
}

.comparison-list li {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2);
    border-radius: var(--radius-md);
}

.comparison-list.negative li {
    background: #fef2f2;
    color: #991b1b;
}

.comparison-list.positive li {
    background: #f0fdf4;
    color: #166534;
}

/* Use Cases Section */
.use-cases {
    background: var(--neutral-50);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-8);
}

.use-case-card {
    background: white;
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--neutral-200);
    transition: all var(--transition-normal);
    text-align: center;
}

.use-case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-blue-light);
}

.use-case-icon {
    font-size: 3rem;
    margin-bottom: var(--space-4);
    display: block;
}

.use-case-card h3 {
    color: var(--neutral-900);
    margin-bottom: var(--space-3);
}

.use-case-card p {
    color: var(--charcoal-light);
    margin: 0;
}

/* FAQ Section */
.faq {
    background: white;
}

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

.faq-item {
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

.faq-question {
    width: 100%;
    padding: var(--space-6);
    background: var(--neutral-50);
    border: none;
    text-align: left;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--neutral-900);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    transition: all var(--transition-normal);
}

.faq-question:hover {
    background: var(--neutral-100);
}

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

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(180deg);
}

.faq-icon {
    flex-shrink: 0;
    transition: transform var(--transition-normal);
}

.faq-answer {
    padding: 0 var(--space-6) var(--space-6);
    background: white;
    display: none;
    opacity: 1;
    transform: translateY(0);
}

.faq-answer.active {
    display: block !important;
    opacity: 1 !important;
    transform: translateY(0) !important;
    animation: fadeIn 0.3s ease-out;
}

.faq-answer p {
    margin: 0;
    color: var(--charcoal-light);
    line-height: 1.7;
}

/* Ensure FAQ content stays visible */
.faq-answer.active p {
    opacity: 1 !important;
    visibility: visible !important;
}

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

/* Contact CTA Section */
.contact-cta {
    background: var(--neutral-50);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: start;
}

.contact-text h2 {
    margin-bottom: var(--space-4);
}

.contact-text p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-8);
}

.contact-benefits {
    display: grid;
    gap: var(--space-3);
    margin-bottom: var(--space-8);
}

.contact-benefit {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-weight: var(--font-weight-medium);
    color: var(--charcoal);
}

.contact-actions {
    display: flex;
    justify-content: flex-start;
}

.contact-info-card {
    background: white;
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--neutral-200);
}

.contact-info-card h3 {
    color: var(--neutral-900);
    margin-bottom: var(--space-6);
    text-align: center;
}

.contact-details {
    display: grid;
    gap: var(--space-4);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3);
    background: var(--neutral-50);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-blue);
}

.contact-item svg {
    color: var(--primary-blue);
    flex-shrink: 0;
}

.contact-item span {
    font-weight: var(--font-weight-medium);
    color: var(--charcoal);
}

/* Final CTA Section */
.final-cta {
    background: linear-gradient(135deg, var(--neutral-100) 0%, var(--neutral-200) 100%);
    color: var(--neutral-900);
    text-align: center;
}

.final-cta h2 {
    color: var(--neutral-900);
    margin-bottom: var(--space-4);
}

.final-cta p {
    font-size: var(--font-size-xl);
    color: var(--charcoal-light);
    margin-bottom: var(--space-8);
}

.final-cta-buttons {
    display: flex;
    justify-content: center;
    gap: var(--space-6);
    margin-bottom: var(--space-8);
}

.final-cta .cta-primary {
    background: var(--primary-blue);
    color: white;
}

.final-cta .cta-primary:hover {
    background: var(--primary-blue-dark);
    color: white;
}

.final-cta .cta-secondary {
    background: transparent;
    color: var(--primary-blue);
    border-color: var(--primary-blue);
}

.final-cta .cta-secondary:hover {
    background: var(--primary-blue);
    color: white;
}

.delivery-info {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    color: var(--charcoal-light);
    margin: 0;
}

/* Footer */
.footer {
    background: var(--neutral-100);
    color: var(--neutral-900);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

.footer-section h3,
.footer-section h4 {
    color: var(--neutral-900);
    margin-bottom: var(--space-6);
}

.footer-section p {
    color: var(--charcoal-light);
    line-height: 1.7;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--space-3);
}

.footer-section a {
    color: var(--charcoal-light);
    transition: color var(--transition-fast);
}

.footer-section a:hover {
    color: var(--primary-blue);
}

.partner-footer {
    margin-top: var(--space-6);
    padding-top: var(--space-6);
    border-top: 1px solid var(--neutral-300);
}

.partner-footer p {
    margin-bottom: var(--space-2);
    color: var(--charcoal-light);
}

.partner-footer a {
    color: var(--primary-blue-light);
    font-weight: var(--font-weight-semibold);
}

.contact-info p {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
}

.social-links {
    display: flex;
    gap: var(--space-4);
    margin-top: var(--space-6);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--neutral-200);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

.social-links a:hover {
    background: var(--primary-blue);
    transform: translateY(-2px);
}

.footer-bottom {
    padding-top: var(--space-8);
    border-top: 1px solid var(--neutral-300);
    text-align: center;
}

.footer-bottom p {
    color: var(--charcoal-light);
    margin: 0;
}

/* Responsive Design */
@media (min-width: 1400px) {
    .container {
        max-width: 1400px;
    }
    
    .benefits-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-8);
    }
    
    .use-cases-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-8);
    }
    
    .quality-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-8);
    }
}

@media (max-width: 1024px) {
    .container {
        padding: 0 var(--space-6);
    }
    
    .hero-content,
    .tab-panel.active,
    .quote-content {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
    
    .partner-badge {
        flex-direction: column;
        text-align: center;
    }
    
    .comparison-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-8);
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.5rem;
    }
    
    section {
        padding: var(--space-16) 0;
    }
    
    .header-content {
        padding: var(--space-3) 0;
    }
    
    .nav {
        display: none;
    }
    
    .hero {
        padding: calc(var(--space-20) + var(--space-8)) 0 var(--space-16);
        text-align: center;
    }
    
    .hero-text h1 {
        font-size: var(--font-size-4xl);
    }
    
    .trust-badges {
        grid-template-columns: 1fr;
    }
    
    .cta-group {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-primary,
    .cta-secondary {
        width: 100%;
        justify-content: center;
    }
    
    .benefits-grid,
    .quality-grid,
    .use-cases-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
    
    .tab-buttons {
        flex-wrap: wrap;
        gap: var(--space-1);
    }
    
    .tab-btn {
        flex: 1;
        min-width: 120px;
    }
    
    .tab-panel {
        padding: var(--space-8);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
    
    .final-cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .final-cta .cta-primary,
    .final-cta .cta-secondary {
        width: 100%;
        max-width: 300px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-8);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-4);
    }
    
    .hero-text h1 {
        font-size: var(--font-size-3xl);
    }
    
    .section-header h2 {
        font-size: var(--font-size-3xl);
    }
    
    .benefit-card,
    .quality-item,
    .use-case-card {
        padding: var(--space-6);
    }
    
    .tab-panel {
        padding: var(--space-6);
    }
    
    .quote-form-container {
        padding: var(--space-6);
    }
}

/* Print Styles */
@media print {
    .header,
    .cta-group,
    .final-cta,
    .quote-form {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    h1, h2, h3 {
        page-break-after: avoid;
    }
    
    .benefit-card,
    .quality-item,
    .use-case-card,
    .faq-item {
        page-break-inside: avoid;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --neutral-200: #000;
        --neutral-300: #333;
        --primary-blue: #0066cc;
        --primary-blue-dark: #004499;
    }
    
    .btn,
    .cta-primary,
    .cta-secondary {
        border: 2px solid currentColor;
    }
}

/* Dark Mode Support (if needed in future) */
@media (prefers-color-scheme: dark) {
    /* Dark mode styles can be added here if requested */
}

/* Animation Classes for JavaScript */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

.slide-up {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s ease-out;
}

.slide-up.visible {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

.scale-in {
    opacity: 0;
    transform: scale(0.95);
    transition: all 0.5s ease-out;
}

.scale-in.visible {
    opacity: 1 !important;
    transform: scale(1) !important;
}

/* Ensure all animated elements stay visible */
.fade-in,
.slide-up,
.scale-in {
    opacity: 1 !important;
    transform: translateY(0) scale(1) !important;
}

/* Fallback animations for when GSAP doesn't load */
.hero-text h1,
.hero-text .subhead,
.trust-badges .badge,
.benefits-list li,
.cta-group a,
.hero-image {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.hero-text h1.animate,
.hero-text .subhead.animate,
.trust-badges .badge.animate,
.benefits-list li.animate,
.cta-group a.animate,
.hero-image.animate {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

/* Ensure all hero elements stay visible after animation */
.hero-text h1,
.hero-text .subhead,
.trust-badges .badge,
.benefits-list li,
.cta-group a,
.hero-image {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

.benefit-card,
.quality-item,
.use-case-card {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.benefit-card.animate,
.quality-item.animate,
.use-case-card.animate {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

/* Ensure all section elements stay visible after animation */
.benefit-card,
.quality-item,
.use-case-card {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

/* Loading States */
.loading {
    position: relative;
    overflow: hidden;
}

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

@keyframes loading {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

/* Focus Management */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-blue);
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 10000;
}

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

/* Utility Classes */
.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;
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }

.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.grid { display: grid; }

/* Performance Optimizations */
.will-change-transform {
    will-change: transform;
}

.will-change-opacity {
    will-change: opacity;
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    .fade-in,
    .slide-up,
    .scale-in,
    .loading::after {
        animation: none;
        transition: none;
    }
    
    .fade-in,
    .slide-up,
    .scale-in {
        opacity: 1;
        transform: none;
    }
}