/* ========================================
   PDF-XChange Landing Page - Styles
   Modern, Responsive, SEO-Optimized Design
   ======================================== */

/* CSS Custom Properties / Design Tokens */
:root {
    /* Colors */
    --color-primary: #E74C3C;
    --color-primary-dark: #C0392B;
    --color-primary-light: #F5F0EF;
    --color-secondary: #3B82F6;
    --color-secondary-dark: #2563EB;
    --color-success: #22C55E;
    --color-warning: #F59E0B;
    
    /* Neutrals */
    --color-white: #FFFFFF;
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;
    --color-black: #000000;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    
    /* 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;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 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);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    --transition-slower: 500ms ease;
    
    /* Container */
    --container-max: 1280px;
    --container-padding: 1.5rem;
    
    /* Header */
    --header-height: 80px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-gray-700);
    background-color: var(--color-white);
    overflow-x: hidden;
}

/* Skip Link for Accessibility */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-md);
    z-index: 9999;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--space-4);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-gray-900);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }

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

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

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--radius-lg);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn:active {
    transform: translateY(0);
}

.btn svg {
    flex-shrink: 0;
}

/* Primary Button */
.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: var(--color-white);
    box-shadow: var(--shadow-lg);
}

/* Secondary Button */
.btn-secondary {
    background: var(--color-secondary);
    color: var(--color-white);
    border-color: var(--color-secondary);
}

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

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

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

/* White Buttons */
.btn-white {
    background: var(--color-white);
    color: var(--color-primary);
    border-color: var(--color-white);
}

.btn-white:hover {
    background: var(--color-gray-100);
    transform: translateY(-2px);
}

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

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

/* Button Sizes */
.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-base);
    border-radius: var(--radius-xl);
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-xs);
}

.btn-block {
    width: 100%;
}

/* ========================================
   HEADER & NAVIGATION
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all var(--transition-base);
    border-bottom: 1px solid transparent;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    border-bottom-color: var(--color-gray-200);
    box-shadow: var(--shadow-sm);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-weight: 700;
    font-size: var(--text-xl);
    color: var(--color-gray-900);
}

.logo:hover {
    color: var(--color-gray-900);
}

.logo-icon {
    width: 40px;
    height: 40px;
}

.logo-text {
    display: none;
}

@media (min-width: 640px) {
    .logo-text {
        display: block;
    }
}

.nav-menu {
    display: none;
    list-style: none;
    align-items: center;
    gap: var(--space-8);
}

.nav-menu.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    padding: var(--space-6);
    border-bottom: 1px solid var(--color-gray-200);
    box-shadow: var(--shadow-lg);
}

@media (min-width: 1024px) {
    .nav-menu {
        display: flex;
        flex-direction: row;
        position: static;
        background: transparent;
        padding: 0;
        border: none;
        box-shadow: none;
    }
}

.nav-link {
    font-weight: 500;
    color: var(--color-gray-600);
    padding: var(--space-2) 0;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-base);
}

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

.nav-link:hover::after {
    width: 100%;
}

.nav-item-cta {
    display: none;
}

@media (min-width: 1024px) {
    .nav-item-cta {
        display: block;
    }
}

/* Mobile Menu Toggle */
.mobile-menu-toggle,
.hamburger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    align-items: center;
}

@media (min-width: 1024px) {
    .mobile-menu-toggle,
    .hamburger {
        display: none;
    }
}

.hamburger-line {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-gray-700);
    transition: all var(--transition-base);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    position: relative;
    padding: calc(var(--header-height) + var(--space-16)) 0 var(--space-20);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #FDF2F8 0%, #FEF3C7 50%, #F0F9FF 100%);
}

.hero-pattern {
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(231, 76, 60, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.05) 0%, transparent 50%);
}

.hero .container {
    display: grid;
    gap: var(--space-12);
    align-items: center;
}

@media (min-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr 1fr;
    }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-gray-700);
    margin-bottom: var(--space-6);
    animation: fadeInUp 0.6s ease forwards;
}

.hero-title {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-6);
    animation: fadeInUp 0.6s ease 0.1s forwards;
    opacity: 0;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: var(--text-5xl);
    }
}

@media (min-width: 1280px) {
    .hero-title {
        font-size: var(--text-6xl);
    }
}

.hero-title .highlight {
    color: var(--color-primary);
    position: relative;
}

.hero-subtitle {
    font-size: var(--text-lg);
    color: var(--color-gray-600);
    max-width: 560px;
    margin-bottom: var(--space-8);
    animation: fadeInUp 0.6s ease 0.2s forwards;
    opacity: 0;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-bottom: var(--space-10);
    animation: fadeInUp 0.6s ease 0.3s forwards;
    opacity: 0;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    animation: fadeInUp 0.6s ease 0.4s forwards;
    opacity: 0;
}

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

.stat-value {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-gray-900);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-gray-300);
}

/* Hero Visual */
.hero-visual {
    display: none;
    justify-content: center;
    animation: fadeInRight 0.8s ease 0.3s forwards;
    opacity: 0;
}

@media (min-width: 1024px) {
    .hero-visual {
        display: flex;
    }
}

.hero-app-preview {
    perspective: 1000px;
}

.app-window {
    width: 100%;
    max-width: 500px;
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    overflow: hidden;
    transform: rotateY(-5deg) rotateX(5deg);
    transition: transform var(--transition-slow);
}

.app-window:hover {
    transform: rotateY(0) rotateX(0);
}

.app-titlebar {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-3) var(--space-4);
    background: var(--color-gray-100);
    border-bottom: 1px solid var(--color-gray-200);
}

.window-controls {
    display: flex;
    gap: var(--space-2);
}

.window-btn {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
}

.window-btn.close { background: #FF5F57; }
.window-btn.minimize { background: #FEBC2E; }
.window-btn.maximize { background: #28C840; }

.app-title {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-gray-600);
}

.app-content {
    padding: var(--space-4);
    min-height: 350px;
    background: var(--color-gray-50);
}

.pdf-preview {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    margin-bottom: var(--space-4);
    box-shadow: var(--shadow-sm);
}

.pdf-page {
    position: relative;
    background: white;
    padding: var(--space-6);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
}

.pdf-lines {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.pdf-lines::before,
.pdf-lines::before,
.pdf-lines::after {
    content: '';
    height: 8px;
    background: var(--color-gray-200);
    border-radius: var(--radius-sm);
}

.pdf-lines::before { width: 100%; }
.pdf-lines::after { width: 60%; height: 60px; background: var(--color-gray-100); }

.pdf-image {
    width: 120px;
    height: 150px;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, #FEE2E2 100%);
    border-radius: var(--radius-md);
    margin: 0 auto var(--space-4);
}

.pdf-annotation {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    width: 80px;
    height: 24px;
    background: var(--color-primary);
    border-radius: var(--radius-sm);
    opacity: 0.8;
}

.pdf-toolbar {
    display: flex;
    gap: var(--space-2);
    padding: var(--space-3);
    background: var(--color-white);
    border-radius: var(--radius-lg);
    justify-content: center;
}

.tool {
    width: 32px;
    height: 32px;
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

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

/* ========================================
   TRUST SECTION
   ======================================== */
.trust-section {
    padding: var(--space-8) 0;
    background: var(--color-white);
    border-top: 1px solid var(--color-gray-200);
    border-bottom: 1px solid var(--color-gray-200);
}

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

@media (min-width: 768px) {
    .trust-badges {
        grid-template-columns: repeat(4, 1fr);
    }
}

.trust-badge {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--color-gray-600);
    font-size: var(--text-sm);
    font-weight: 500;
}

.trust-badge svg {
    flex-shrink: 0;
    color: var(--color-success);
}

/* ========================================
   SECTION COMMON STYLES
   ======================================== */
.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto var(--space-16);
}

.section-tag {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-4);
}

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

@media (min-width: 768px) {
    .section-title {
        font-size: var(--text-4xl);
    }
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--color-gray-600);
    margin-bottom: 0;
}

/* ========================================
   PRODUCTS SECTION
   ======================================== */
.products-section {
    padding: var(--space-20) 0;
    background: var(--color-gray-50);
}

.products-grid {
    display: grid;
    gap: var(--space-8);
}

@media (min-width: 768px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .products-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.product-card {
    position: relative;
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

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

.product-badge {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    padding: var(--space-1) var(--space-3);
    background: var(--color-primary);
    color: var(--color-white);
    font-size: var(--text-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
}

.product-icon {
    margin-bottom: var(--space-4);
}

.product-name {
    font-size: var(--text-xl);
    margin-bottom: var(--space-3);
}

.product-description {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    margin-bottom: var(--space-4);
    flex-grow: 1;
}

.product-features {
    list-style: none;
    margin-bottom: var(--space-6);
}

.product-features li {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--color-gray-700);
    padding: var(--space-1) 0;
}

.product-features svg {
    flex-shrink: 0;
}

.product-pricing {
    margin-bottom: var(--space-4);
    padding: var(--space-4);
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    text-align: center;
}

.price-label {
    display: block;
    font-size: var(--text-xs);
    color: var(--color-gray-500);
    margin-bottom: var(--space-1);
}

.price-value {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-primary);
}

.product-link {
    display: block;
    text-align: center;
    font-size: var(--text-sm);
    font-weight: 500;
    margin-top: var(--space-3);
    color: var(--color-gray-500);
}

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

/* ========================================
   FEATURES SECTION
   ======================================== */
.features-section {
    padding: var(--space-20) 0;
    background: var(--color-white);
}

.features-tabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-12);
}

.feature-tab {
    padding: var(--space-3) var(--space-6);
    background: var(--color-gray-100);
    border: none;
    border-radius: var(--radius-full);
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-gray-600);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.feature-tab:hover {
    background: var(--color-gray-200);
}

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

.feature-panel {
    display: none;
}

.feature-panel.active {
    display: block;
    animation: fadeIn 0.4s ease forwards;
}

.feature-list {
    display: grid;
    gap: var(--space-6);
}

@media (min-width: 768px) {
    .feature-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .feature-list {
        grid-template-columns: repeat(3, 1fr);
    }
}

.feature-item {
    padding: var(--space-6);
    background: var(--color-gray-50);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.feature-item:hover {
    background: var(--color-white);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
}

.feature-item h4 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-2);
}

.feature-item p {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    margin-bottom: 0;
}

.features-cta {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-top: var(--space-12);
}

/* ========================================
   PRICING SECTION
   ======================================== */
.pricing-section {
    padding: var(--space-20) 0;
    background: var(--color-gray-50);
}

.pricing-grid {
    display: grid;
    gap: var(--space-8);
    margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.pricing-card {
    position: relative;
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.pricing-featured {
    border: 2px solid var(--color-primary);
    transform: scale(1.02);
}

.pricing-featured:hover {
    transform: scale(1.02) translateY(-4px);
}

@media (max-width: 767px) {
    .pricing-featured {
        transform: none;
    }
    
    .pricing-featured:hover {
        transform: translateY(-4px);
    }
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-2) var(--space-4);
    background: var(--color-primary);
    color: var(--color-white);
    font-size: var(--text-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.pricing-name {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-2);
}

.pricing-tagline {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
    margin-bottom: var(--space-6);
}

.pricing-features {
    flex-grow: 1;
    margin-bottom: var(--space-8);
}

.pricing-features ul {
    list-style: none;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) 0;
    font-size: var(--text-sm);
    color: var(--color-gray-700);
}

.pricing-features svg {
    flex-shrink: 0;
}

.pricing-cta {
    text-align: center;
}

.price-quote {
    display: block;
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--space-4);
}

.pricing-note {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-6);
    background: var(--color-white);
    border-radius: var(--radius-xl);
    border-left: 4px solid var(--color-secondary);
}

.pricing-note svg {
    flex-shrink: 0;
    color: var(--color-secondary);
}

.pricing-note p {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    margin: 0;
}

/* ========================================
   TESTIMONIALS SECTION
   ======================================== */
.testimonials-section {
    padding: var(--space-20) 0;
    background: var(--color-white);
}

.testimonials-grid {
    display: grid;
    gap: var(--space-8);
    margin-bottom: var(--space-16);
}

@media (min-width: 768px) {
    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.testimonial-card {
    background: var(--color-gray-50);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    transition: all var(--transition-base);
}

.testimonial-card:hover {
    background: var(--color-white);
    box-shadow: var(--shadow-lg);
}

.testimonial-rating {
    display: flex;
    gap: var(--space-1);
    margin-bottom: var(--space-4);
}

.testimonial-text {
    font-size: var(--text-sm);
    color: var(--color-gray-700);
    line-height: 1.8;
    margin-bottom: var(--space-6);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.author-avatar {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: var(--color-white);
    font-weight: 600;
    font-size: var(--text-sm);
    border-radius: var(--radius-full);
}

.author-name {
    display: block;
    font-weight: 600;
    color: var(--color-gray-900);
}

.author-location {
    display: block;
    font-size: var(--text-sm);
    color: var(--color-gray-500);
}

/* Clients Section */
.clients-section {
    text-align: center;
    padding: var(--space-12);
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);
    border-radius: var(--radius-2xl);
}

.clients-title {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-4);
}

.clients-subtitle {
    color: var(--color-gray-600);
    margin-bottom: var(--space-6);
}

/* ========================================
   DOWNLOAD SECTION
   ======================================== */
.download-section {
    padding: var(--space-20) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

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

.download-title {
    font-size: var(--text-4xl);
    color: var(--color-white);
    margin-bottom: var(--space-4);
}

.download-subtitle {
    font-size: var(--text-lg);
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
    margin: 0 auto var(--space-8);
}

.download-actions {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.download-note {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
}

/* ========================================
   CONTACT SECTION
   ======================================== */
.contact-section {
    padding: var(--space-20) 0;
    background: var(--color-gray-50);
}

.contact-grid {
    display: grid;
    gap: var(--space-12);
}

@media (min-width: 1024px) {
    .contact-grid {
        grid-template-columns: 1fr 2fr;
    }
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.contact-card {
    background: var(--color-white);
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
}

.contact-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
}

.contact-card h4 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-2);
}

.contact-card p {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    margin-bottom: var(--space-1);
}

.contact-card a {
    color: var(--color-primary);
}

.social-links {
    display: flex;
    gap: var(--space-3);
    margin-top: var(--space-2);
}

.social-links a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-100);
    color: var(--color-gray-600);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

/* Contact Form */
.contact-form {
    background: var(--color-white);
    padding: var(--space-8);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
}

.form-group {
    margin-bottom: var(--space-6);
}

.form-group label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-gray-700);
    margin-bottom: var(--space-2);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--space-4);
    background: var(--color-gray-50);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    font-family: var(--font-sans);
    font-size: var(--text-base);
    color: var(--color-gray-900);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--color-white);
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-gray-400);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 20 20' fill='%236B7280'%3E%3Cpath fill-rule='evenodd' d='M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-note {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
    text-align: center;
    margin-top: var(--space-4);
    margin-bottom: 0;
}

/* ========================================
   COOKIE BANNER
   ======================================== */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-gray-900);
    color: var(--color-white);
    padding: var(--space-4);
    z-index: 9999;
    transform: translateY(100%);
    transition: transform var(--transition-slow);
}

.cookie-banner.show {
    transform: translateY(0);
}

.cookie-content {
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    align-items: center;
    text-align: center;
}

@media (min-width: 768px) {
    .cookie-content {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

.cookie-content p {
    font-size: var(--text-sm);
    margin: 0;
}

.cookie-content a {
    color: var(--color-primary);
}

.cookie-actions {
    display: flex;
    gap: var(--space-3);
    flex-shrink: 0;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: var(--color-gray-900);
    color: var(--color-gray-400);
    padding: var(--space-16) 0 var(--space-8);
}

.footer-grid {
    display: grid;
    gap: var(--space-10);
    margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 2fr repeat(4, 1fr);
    }
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-weight: 700;
    font-size: var(--text-xl);
    color: var(--color-white);
    margin-bottom: var(--space-4);
}

.footer-logo:hover {
    color: var(--color-white);
}

.footer-tagline {
    font-size: var(--text-sm);
    margin-bottom: var(--space-4);
}

.footer-social {
    display: flex;
    gap: var(--space-3);
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-800);
    color: var(--color-gray-400);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.footer-links h4 {
    color: var(--color-white);
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-4);
}

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

.footer-links li {
    margin-bottom: var(--space-2);
}

.footer-links a {
    color: var(--color-gray-400);
    font-size: var(--text-sm);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-white);
}

.footer-bottom {
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-gray-800);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    align-items: center;
    text-align: center;
}

@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
    }
}

.footer-ukraine {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-sm);
}

.footer-ukraine img {
    border-radius: 2px;
}

.copyright {
    font-size: var(--text-sm);
    margin: 0;
}

/* ========================================
   ANIMATIONS
   ======================================== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Scroll Animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease forwards;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   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;
}

/* Focus Styles for Accessibility */
*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

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

/* ========================================
   MODAL STYLES
   ======================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

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

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    width: 100%;
    max-width: 560px;
    max-height: 90vh;
    overflow-y: auto;
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    transform: translateY(20px) scale(0.95);
    transition: transform var(--transition-base);
}

.modal.show .modal-content {
    transform: translateY(0) scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-6);
    border-bottom: 1px solid var(--color-gray-200);
}

.modal-title {
    font-size: var(--text-2xl);
    margin: 0;
}

.modal-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-gray-100);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--color-gray-600);
}

.modal-close:hover {
    background: var(--color-gray-200);
    color: var(--color-gray-900);
}

.modal-form {
    padding: var(--space-6);
}

.form-row {
    display: grid;
    gap: var(--space-4);
}

@media (min-width: 480px) {
    .form-row {
        grid-template-columns: 1fr 1fr;
    }
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.form-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    cursor: pointer;
    accent-color: var(--color-primary);
}

.form-checkbox label {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    line-height: 1.5;
}

.form-checkbox a {
    color: var(--color-primary);
}

.btn-loading {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
}

.spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.modal-success {
    padding: var(--space-10);
    text-align: center;
}

.success-icon {
    margin-bottom: var(--space-6);
}

.modal-success h3 {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-3);
}

.modal-success p {
    color: var(--color-gray-600);
    margin-bottom: var(--space-6);
}

/* Form error states */
.form-group input.error,
.form-group select.error,
.form-group textarea.error {
    border-color: var(--color-primary);
    background: #FEF2F2;
}

/* Responsive modal */
@media (max-width: 480px) {
    .modal {
        padding: 0;
        align-items: flex-end;
    }
    
    .modal-content {
        max-width: 100%;
        max-height: 95vh;
        border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
    }
}

/* ========================================
   KNOWLEDGE BASE PAGE STYLES
   ======================================== */

/* Hero Section */
.kb-hero {
    padding: calc(var(--header-height) + var(--space-16)) 0 var(--space-16);
    background: linear-gradient(135deg, var(--color-gray-50) 0%, #FFFFFF 100%);
    text-align: center;
    border-bottom: 1px solid var(--color-gray-100);
}

.kb-hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.kb-badge {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
    margin-bottom: var(--space-6);
}

.kb-title {
    font-size: var(--text-5xl);
    font-weight: 800;
    margin-bottom: var(--space-4);
    line-height: 1.1;
}

@media (max-width: 768px) {
    .kb-title {
        font-size: var(--text-4xl);
    }
}

.kb-subtitle {
    font-size: var(--text-lg);
    color: var(--color-gray-600);
    margin-bottom: var(--space-10);
    line-height: 1.6;
}

.kb-search {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    max-width: 700px;
    margin: 0 auto var(--space-8);
    padding: var(--space-2);
    background: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.kb-search:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px var(--color-primary-light);
}

.kb-search-icon {
    color: var(--color-gray-400);
    margin-left: var(--space-4);
    flex-shrink: 0;
}

.kb-search-input {
    flex: 1;
    border: none;
    outline: none;
    font-size: var(--text-base);
    padding: var(--space-3) 0;
    background: transparent;
    font-family: inherit;
    min-width: 0;
}

.kb-search-btn {
    flex-shrink: 0;
}

.kb-quick-links {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
}

.kb-quick-label {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
    font-weight: 500;
}

.kb-quick-tag {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    color: var(--color-gray-700);
    transition: all var(--transition-fast);
}

.kb-quick-tag:hover {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
    transform: translateY(-1px);
}

/* Categories Section */
.kb-categories {
    padding: var(--space-20) 0;
}

.kb-categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-6);
}

.kb-category-card {
    padding: var(--space-8);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-2xl);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

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

.kb-category-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-6);
}

.kb-category-name {
    font-size: var(--text-xl);
    margin-bottom: var(--space-3);
    color: var(--color-gray-900);
}

.kb-category-description {
    color: var(--color-gray-600);
    line-height: 1.6;
    margin-bottom: var(--space-6);
    font-size: var(--text-sm);
}

.kb-category-topics {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--space-6) 0;
    flex: 1;
}

.kb-category-topics li {
    padding: var(--space-2) 0;
    border-bottom: 1px solid var(--color-gray-100);
}

.kb-category-topics li:last-child {
    border-bottom: none;
}

.kb-category-topics a {
    color: var(--color-gray-700);
    font-size: var(--text-sm);
    display: flex;
    align-items: center;
    transition: color var(--transition-fast);
}

.kb-category-topics a::before {
    content: '→';
    margin-right: var(--space-2);
    color: var(--color-primary);
    transition: transform var(--transition-fast);
}

.kb-category-topics a:hover {
    color: var(--color-primary);
}

.kb-category-topics a:hover::before {
    transform: translateX(4px);
}

.kb-category-link {
    color: var(--color-primary);
    font-weight: 600;
    font-size: var(--text-sm);
    margin-top: auto;
    display: inline-block;
}

.kb-category-link:hover {
    color: var(--color-primary-dark);
}

/* Popular Articles Section */
.kb-popular {
    padding: var(--space-20) 0;
    background: var(--color-gray-50);
}

.kb-articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-6);
    margin-bottom: var(--space-12);
}

.kb-article-card {
    padding: var(--space-6);
    background: var(--color-white);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-gray-200);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.kb-article-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.kb-article-tag {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    margin-bottom: var(--space-4);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    align-self: flex-start;
}

.kb-article-title {
    font-size: var(--text-xl);
    margin-bottom: var(--space-3);
    color: var(--color-gray-900);
    line-height: 1.3;
}

.kb-article-excerpt {
    color: var(--color-gray-600);
    font-size: var(--text-sm);
    line-height: 1.6;
    margin-bottom: var(--space-4);
    flex: 1;
}

.kb-article-meta {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-gray-100);
}

.kb-meta-item {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--text-xs);
    color: var(--color-gray-500);
}

.kb-article-link {
    color: var(--color-primary);
    font-weight: 600;
    font-size: var(--text-sm);
    margin-top: auto;
}

.kb-article-link:hover {
    color: var(--color-primary-dark);
}

/* KB CTA Section */
.kb-cta {
    text-align: center;
    padding: var(--space-12);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    border-radius: var(--radius-2xl);
}

.kb-cta h3 {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-4);
    color: var(--color-white);
}

.kb-cta p {
    font-size: var(--text-lg);
    margin-bottom: var(--space-8);
    opacity: 0.95;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.kb-cta .btn-primary {
    background: var(--color-white);
    color: var(--color-primary);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
}

.kb-cta .btn-primary:hover {
    background: var(--color-gray-100);
    transform: translateY(-2px);
}

/* Resources Section */
.kb-resources {
    padding: var(--space-20) 0;
}

.kb-resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-6);
}

.kb-resource-card {
    padding: var(--space-8);
    text-align: center;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-2xl);
    transition: all var(--transition-base);
}

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

.kb-resource-icon {
    font-size: 48px;
    margin-bottom: var(--space-4);
}

.kb-resource-card h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-3);
    color: var(--color-gray-900);
}

.kb-resource-card p {
    color: var(--color-gray-600);
    font-size: var(--text-sm);
    line-height: 1.6;
    margin-bottom: var(--space-6);
}

.kb-resource-link {
    color: var(--color-primary);
    font-weight: 600;
    font-size: var(--text-sm);
}

.kb-resource-link:hover {
    color: var(--color-primary-dark);
}

/* Active nav link */
.nav-link.active {
    color: var(--color-primary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
}

/* ========================================
   ARTICLE PAGE STYLES
   ======================================== */

/* Article Hero Section */
.article-hero {
    padding: calc(var(--header-height) + var(--space-12)) 0 var(--space-16);
    background: var(--color-white);
    min-height: 60vh;
}

.article-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-8);
    font-size: var(--text-sm);
    color: var(--color-gray-500);
    flex-wrap: wrap;
}

.article-breadcrumb a {
    color: var(--color-gray-600);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.article-breadcrumb a:hover {
    color: var(--color-primary);
}

.breadcrumb-separator {
    color: var(--color-gray-400);
}

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

.article-header {
    margin-bottom: var(--space-10);
    padding-bottom: var(--space-8);
    border-bottom: 1px solid var(--color-gray-200);
}

.article-meta-top {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
    flex-wrap: wrap;
}

.article-category-badge {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.article-read-time {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
}

.article-title {
    font-size: var(--text-4xl);
    font-weight: 800;
    color: var(--color-gray-900);
    margin-bottom: var(--space-4);
    line-height: 1.2;
}

@media (max-width: 768px) {
    .article-title {
        font-size: var(--text-3xl);
    }
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-6);
    margin-bottom: var(--space-4);
}

.article-meta-item {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--color-gray-600);
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.article-tag {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background: var(--color-gray-100);
    color: var(--color-gray-700);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
}

/* Article Body */
.article-body {
    line-height: 1.7;
    color: var(--color-gray-800);
    font-size: var(--text-base);
}

.article-body h2 {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-top: var(--space-10);
    margin-bottom: var(--space-4);
}

.article-body h3 {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-gray-900);
    margin-top: var(--space-8);
    margin-bottom: var(--space-3);
}

.article-body p {
    margin-bottom: var(--space-4);
}

.article-body ul, .article-body ol {
    margin-bottom: var(--space-4);
    padding-left: var(--space-6);
}

.article-body li {
    margin-bottom: var(--space-2);
}

.article-body a {
    color: var(--color-primary);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
}

.article-body a:hover {
    color: var(--color-primary-dark);
}

.article-body strong {
    color: var(--color-gray-900);
    font-weight: 600;
}

.article-body pre {
    background: var(--color-gray-900);
    color: #E5E7EB;
    padding: var(--space-4);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin-bottom: var(--space-6);
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    line-height: 1.5;
}

.article-body code {
    background: var(--color-gray-100);
    color: var(--color-gray-900);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.9em;
}

.article-body pre code {
    background: transparent;
    color: inherit;
    padding: 0;
}

.kb-callout {
    background: var(--color-primary-light);
    border-left: 4px solid var(--color-primary);
    padding: var(--space-4) var(--space-6);
    border-radius: var(--radius-md);
    margin: var(--space-6) 0;
}

.kb-callout strong {
    color: var(--color-primary);
}

/* Article Footer */
.article-footer {
    margin-top: var(--space-12);
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-gray-200);
}

.article-helpful {
    text-align: center;
    margin-bottom: var(--space-8);
}

.article-helpful h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-4);
    color: var(--color-gray-900);
}

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

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

.article-not-found {
    text-align: center;
    padding: var(--space-16) 0;
}

.article-not-found h1 {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-4);
}

.article-not-found p {
    color: var(--color-gray-600);
    margin-bottom: var(--space-8);
}

/* ========================================
   MANUALS PAGE STYLES
   ======================================== */

/* Honeypot field - completely hidden from humans, bots will fill it */
.hp-field {
    position: absolute !important;
    left: -9999px !important;
    top: -9999px !important;
    width: 1px !important;
    height: 1px !important;
    overflow: hidden !important;
    opacity: 0 !important;
    pointer-events: none !important;
}

/* Form inline alert messages */
.form-alert {
    padding: 12px 16px;
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 500;
    margin-bottom: 16px;
    line-height: 1.5;
    border: 1px solid transparent;
}

.form-alert-success {
    background: #dcfce7;
    color: #166534;
    border-color: #86efac;
}

.form-alert-error {
    background: #fee2e2;
    color: #991b1b;
    border-color: #fca5a5;
}

/* Important Notice */
.kb-notice {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    padding: var(--space-6);
    background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 100%);
    border-left: 4px solid #3B82F6;
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-12);
}

.kb-notice-icon {
    font-size: var(--text-3xl);
    flex-shrink: 0;
}

.kb-notice-content h3 {
    font-size: var(--text-lg);
    color: var(--color-gray-900);
    margin-bottom: var(--space-2);
}

.kb-notice-content p {
    color: var(--color-gray-700);
    line-height: 1.6;
    font-size: var(--text-sm);
}

/* Manual Category Sections */
.manual-category-section {
    margin-bottom: var(--space-16);
}

.manual-category-section:last-child {
    margin-bottom: 0;
}

.manual-category-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-5);
    margin-bottom: var(--space-8);
    padding-bottom: var(--space-6);
    border-bottom: 2px solid var(--color-gray-100);
}

.manual-category-icon-large {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.manual-category-info {
    flex: 1;
}

.manual-category-title {
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--space-2);
}

.manual-category-description {
    color: var(--color-gray-600);
    line-height: 1.6;
    margin-bottom: var(--space-3);
}

.manual-category-count {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
}

/* Manuals Grid */
.manuals-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: var(--space-6);
}

/* Product Card */
.manual-product-card {
    display: flex;
    flex-direction: column;
    padding: var(--space-6);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-2xl);
    transition: all var(--transition-base);
}

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

.manual-product-header {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

.manual-product-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.manual-product-info {
    flex: 1;
    min-width: 0;
}

.manual-product-name {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--space-1);
    line-height: 1.2;
}

.manual-product-version {
    display: inline-block;
    padding: 2px 8px;
    background: var(--color-gray-100);
    color: var(--color-gray-700);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    font-weight: 600;
}

.manual-product-description {
    color: var(--color-gray-600);
    line-height: 1.6;
    font-size: var(--text-sm);
    margin-bottom: var(--space-4);
}

.manual-product-meta {
    display: flex;
    gap: var(--space-4);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-gray-100);
    margin-bottom: var(--space-4);
}

.manual-meta-item {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--text-xs);
    color: var(--color-gray-500);
}

.manual-product-chapters {
    margin-bottom: var(--space-4);
}

.manual-chapters-title {
    font-size: var(--text-xs);
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-2);
    font-weight: 600;
}

.manual-chapters-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.manual-chapter-tag {
    display: inline-block;
    padding: 4px 10px;
    background: var(--color-gray-50);
    color: var(--color-gray-700);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    border: 1px solid var(--color-gray-200);
}

.manual-product-audience {
    font-size: var(--text-xs);
    color: var(--color-gray-600);
    line-height: 1.5;
    margin-bottom: var(--space-4);
    padding: var(--space-3);
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
}

.manual-product-audience strong {
    color: var(--color-gray-800);
}

.manual-product-btn {
    margin-top: auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    width: 100%;
}

@media (max-width: 768px) {
    .manual-category-header {
        flex-direction: column;
    }
    
    .manuals-grid {
        grid-template-columns: 1fr;
    }
}

/* Mobile responsive */
@media (max-width: 768px) {
    .kb-search {
        flex-direction: column;
        border-radius: var(--radius-xl);
        padding: var(--space-3);
    }
    
    .kb-search-icon {
        margin-left: 0;
    }
    
    .kb-search-input {
        width: 100%;
        padding: var(--space-3) 0;
    }
    
    .kb-search-btn {
        width: 100%;
    }
    
    .kb-categories-grid,
    .kb-articles-grid,
    .kb-resources-grid {
        grid-template-columns: 1fr;
    }
}