/* ============================================
   CSS VARIABLES (Design Tokens)
   Extracted from reference image
   ============================================ */
:root {
    /* Colors */
    --color-primary: #4169E1;
    --color-primary-hover: #3557c9;
    --color-primary-contrast: #ffffff;
    
    --color-bg: #ffffff;
    --color-surface: #fafafa;
    --color-surface-alt: #f5f5f5;
    
    --color-text: #1f2937;
    --color-text-secondary: #6b7280;
    --color-text-muted: #9ca3af;
    --color-text-light: #d1d5db;
    
    --color-border: #e5e7eb;
    --color-border-light: #f3f4f6;
    
    --color-success: #10b981;
    --color-warning: #FFA500;
    
    /* Typography */
    --font-serif: 'Lora', Georgia, serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    
    --font-size-xs: 0.75rem;      /* 12px */
    --font-size-sm: 0.875rem;     /* 14px */
    --font-size-base: 1rem;       /* 16px */
    --font-size-lg: 1.125rem;     /* 18px */
    --font-size-xl: 1.25rem;      /* 20px */
    --font-size-2xl: 1.5rem;      /* 24px */
    --font-size-3xl: 1.875rem;    /* 30px */
    --font-size-4xl: 2.25rem;     /* 36px */
    --font-size-5xl: 3rem;        /* 48px */
    
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* Spacing */
    --space-1: 0.25rem;   /* 4px */
    --space-2: 0.5rem;    /* 8px */
    --space-3: 0.75rem;   /* 12px */
    --space-4: 1rem;      /* 16px */
    --space-5: 1.25rem;   /* 20px */
    --space-6: 1.5rem;    /* 24px */
    --space-8: 2rem;      /* 32px */
    --space-10: 2.5rem;   /* 40px */
    --space-12: 3rem;     /* 48px */
    --space-16: 3.5rem;   /* 56px */
    --space-20: 4rem;     /* 64px */
    --space-24: 4.5rem;   /* 72px */
    
    /* Border Radius */
    --radius-sm: 0.25rem;   /* 4px */
    --radius-md: 0.375rem;  /* 6px */
    --radius-lg: 0.5rem;    /* 8px */
    --radius-xl: 0.625rem;  /* 10px */
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.08), 0 1px 2px -1px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.06);
    
    /* Layout */
    --container-max-width: 1280px;
    --container-padding: var(--space-6);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
}

/* Dark Mode Colors */
[data-theme="dark"] {
    --color-bg: #0f172a;
    --color-surface: #1e293b;
    --color-surface-alt: #334155;
    
    --color-text: #f1f5f9;
    --color-text-secondary: #cbd5e1;
    --color-text-muted: #94a3b8;
    --color-text-light: #64748b;
    
    --color-border: #334155;
    --color-border-light: #1e293b;
    
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.4), 0 1px 2px -1px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
}

/* ============================================
   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;
    overflow-x: hidden; /* Prevent horizontal scroll */
    scroll-padding-top: 80px; /* Offset for sticky header */
}

body {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden; /* Prevent horizontal scroll */
    width: 100%;
    transition: background-color var(--transition-base), color var(--transition-base);
}

img, picture, video, canvas, svg {
    display: block;
    max-width: 100%;
    height: auto;
}

input, button, textarea, select {
    font: inherit;
}

/* Ensure all text is readable */
textarea {
    resize: vertical;
    min-height: 120px;
}

button {
    cursor: pointer;
    border: none;
    background: none;
}

a {
    color: inherit;
    text-decoration: none;
}

ul, ol {
    list-style: none;
}

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

/* ============================================
   LAYOUT UTILITIES
   ============================================ */
.container {
    max-width: var(--container-max-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
    width: 100%;
}

/* Prevent content overflow */
* {
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* Ensure images don't overflow */
img {
    max-width: 100%;
    height: auto;
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    transition: box-shadow var(--transition-base), background-color var(--transition-base), border-color var(--transition-base);
}

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

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) 0;
    gap: var(--space-8);
}

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

.nav__logo {
    color: var(--color-text);
    flex-shrink: 0;
}

.nav__brand-text {
    font-size: var(--font-size-base);
    color: var(--color-text);
    white-space: nowrap;
}

.nav__brand-text strong {
    font-weight: var(--font-weight-bold);
}

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

.nav__link {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    position: relative;
}

.nav__link:hover {
    color: var(--color-text);
}

.nav__link:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 4px;
    border-radius: var(--radius-sm);
}

/* Sidebar overlay */
.nav__overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.nav__overlay.active {
    display: block;
    opacity: 1;
}

/* Navigation Actions Container */
.nav__actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-left: auto;
}

/* Language Switcher */
.lang-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background-color: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
    min-height: 36px;
}

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

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

.lang-btn svg {
    flex-shrink: 0;
}

.lang-btn span {
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
}

/* Theme Toggle Button */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    background-color: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background-color: var(--color-surface);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.theme-toggle:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.theme-icon {
    transition: transform var(--transition-base);
}

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

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

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

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

/* Mobile menu toggle - Hamburger icon */
.nav__toggle {
    display: none;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
    position: relative;
    z-index: 1001;
}

.nav__toggle:hover {
    background-color: var(--color-surface);
}

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

.nav__toggle-icon {
    position: relative;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: background-color var(--transition-base);
}

.nav__toggle-icon::before,
.nav__toggle-icon::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-text);
    transition: transform var(--transition-base);
}

.nav__toggle-icon::before {
    top: -7px;
}

.nav__toggle-icon::after {
    top: 7px;
}

.nav__toggle[aria-expanded="true"] .nav__toggle-icon {
    background-color: transparent;
}

.nav__toggle[aria-expanded="true"] .nav__toggle-icon::before {
    transform: translateY(7px) rotate(45deg);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-icon::after {
    transform: translateY(-7px) rotate(-45deg);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    text-align: center;
    white-space: nowrap;
    cursor: pointer;
    border: none;
    min-height: 44px; /* Minimum touch target size */
    touch-action: manipulation; /* Prevent double-tap zoom */
}

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

.btn--primary {
    background: var(--color-primary);
    color: var(--color-primary-contrast);
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-base);
}

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

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

.btn--secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-base);
}

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

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

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

.btn--block {
    width: 100%;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    padding: var(--space-20) 0 var(--space-16) 0;
    text-align: left;
    background: var(--color-bg);
    position: relative;
    overflow: hidden;
    min-height: 500px;
}

.hero .container {
    position: relative;
    height: 100%;
}

.hero__image {
    position: absolute !important;
    right: 0 !important;
    top: 50% !important;
    transform: translateY(-50%) !important;
    width: 60% !important;
    height: auto !important;
    object-fit: cover;
    object-position: center right;
    max-height: 600px;
    z-index: 0;
    pointer-events: none;
    mask-image: linear-gradient(to left, rgba(0,0,0,1) 20%, rgba(0,0,0,0.5) 65%, transparent 100%);
    -webkit-mask-image: linear-gradient(to left, rgba(0,0,0,1) 20%, rgba(0,0,0,0.5) 65%, transparent 100%);
}

.hero__image--light {
    display: block;
}

.hero__image--dark {
    display: none;
}

[data-theme="dark"] .hero__image--light {
    display: none;
}

[data-theme="dark"] .hero__image--dark {
    display: block;
}

.hero__content {
    max-width: 640px;
    margin: 0;
    position: relative;
    z-index: 2;
}

.hero__title {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 6vw, 3.5rem);
    font-weight: 400;
    line-height: 1.2;
    margin-bottom: var(--space-6);
    color: var(--color-text);
    letter-spacing: -0.01em;
    position: relative;
}

.hero__subtitle {
    font-family: var(--font-sans);
    font-size: clamp(1rem, 2vw, 1.125rem);
    line-height: 1.6;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-8);
    font-weight: 400;
}

.hero__features {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: var(--space-6);
    margin-top: var(--space-6);
}

.feature-badge {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.feature-badge__icon {
    flex-shrink: 0;
}

/* ============================================
   COMPARISON SECTION
   ============================================ */
.comparison {
    padding: var(--space-20) 0;
    background: var(--color-surface);
    transition: background-color var(--transition-base);
}

.comparison__header {
    text-align: center;
    margin-bottom: var(--space-16);
}

.comparison__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 480px), 1fr));
    gap: var(--space-10);
    max-width: 1100px;
    margin: 0 auto;
}

.comparison__card {
    background-color: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: var(--space-10);
    border: 1px solid var(--color-border);
    position: relative;
    transition: all var(--transition-base);
}

.comparison__card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.comparison__card--problem {
    background-color: var(--color-surface);
    transition: all var(--transition-base);
}

.comparison__card--solution {
    background-color: var(--color-bg);
    transition: all var(--transition-base);
}

.comparison__badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-6);
}

.comparison__badge--problem {
    background-color: transparent;
}

.comparison__badge--solution {
    background-color: transparent;
}

.comparison__title {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    line-height: var(--line-height-tight);
    margin-bottom: var(--space-3);
    color: var(--color-text);
    font-family: var(--font-sans);
}

.comparison__subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-8);
}

.comparison__list {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.comparison__item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
}

.comparison__icon-wrapper {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 2px;
}

.comparison__icon-wrapper--problem {
    color: var(--color-text-muted);
}

.comparison__icon-wrapper--solution {
    color: var(--color-primary);
}

.comparison__icon {
    flex-shrink: 0;
}

.comparison__content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.comparison__content strong {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    line-height: var(--line-height-tight);
}

.comparison__content span {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-normal);
}

/* ============================================
   HOW IT WORKS SECTION
   ============================================ */
.how-it-works {
    padding: var(--space-16) 0;
    background-color: var(--color-bg);
    transition: background-color var(--transition-base);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr));
    gap: var(--space-8);
    margin-top: var(--space-12);
}

.step-card {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    position: relative;
    transition: all var(--transition-base);
}

.step-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
    border-color: var(--color-text-muted);
}

.step-card__number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--color-surface);
    color: var(--color-text);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-6);
    border: 1px solid var(--color-border);
}

.step-card__title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--space-3);
    color: var(--color-text);
    font-family: var(--font-sans);
}

.step-card__description {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

/* ============================================
   SECTION TITLES
   ============================================ */
.section__title {
    font-size: clamp(var(--font-size-3xl), 4vw, var(--font-size-4xl));
    font-weight: 600;
    text-align: center;
    margin-bottom: var(--space-4);
    color: var(--color-text);
    letter-spacing: -0.01em;
    line-height: var(--line-height-tight);
    font-family: var(--font-sans);
}

.section__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    text-align: center;
    margin-bottom: var(--space-10);
    line-height: var(--line-height-relaxed);
}

/* ============================================
   SERVICES SECTION
   ============================================ */
.services {
    padding: var(--space-16) 0;
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
    gap: var(--space-8);
    margin-top: var(--space-12);
}

.service-card {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    text-align: center;
    transition: all var(--transition-base);
}

.service-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
    border-color: var(--color-text-muted);
}

.service-card__icon {
    margin: 0 auto var(--space-6);
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    transition: all var(--transition-base);
}

.service-card__icon svg {
    transition: color var(--transition-base);
}

[data-theme="dark"] .service-card__icon {
    color: var(--color-text);
}

.service-card__title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--space-3);
    font-family: var(--font-sans);
    color: var(--color-primary);
}

.service-card__description {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

/* ============================================
   TESTIMONIALS SECTION
   ============================================ */
.testimonials {
    padding: var(--space-16) 0;
}

.testimonials__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 350px), 1fr));
    gap: var(--space-8);
    margin-top: var(--space-12);
}

.testimonial-card {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    transition: all var(--transition-base);
    position: relative;
}

.testimonial-card:hover {
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
    border-color: var(--color-text-muted);
}

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

.testimonial-card__text {
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
}

.testimonial-card__author {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.testimonial-card__avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary), #6366f1);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-base);
    flex-shrink: 0;
}

.testimonial-card__name {
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-base);
    margin-bottom: var(--space-1);
}

.testimonial-card__role {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* ============================================
   FAQ SECTION
   ============================================ */
.faq {
    padding: var(--space-16) 0;
    background-color: var(--color-surface);
    transition: background-color var(--transition-base);
}

.faq__list {
    max-width: 800px;
    margin: var(--space-12) auto 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.faq-item {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-item__question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-6);
    text-align: left;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    transition: background-color var(--transition-fast);
    gap: var(--space-4);
    min-height: 44px; /* Minimum touch target size */
}

.faq-item__question:hover {
    background-color: var(--color-surface);
}

.faq-item__question:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: -2px;
}

.faq-item__icon {
    flex-shrink: 0;
    transition: transform var(--transition-base);
    color: var(--color-text-muted);
}

.faq-item__question[aria-expanded="true"] {
    background-color: var(--color-surface);
}

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

.faq-item__answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow), padding var(--transition-slow);
}

.faq-item__question[aria-expanded="true"] + .faq-item__answer {
    max-height: 500px;
    padding: 0 var(--space-6) var(--space-6);
}

.faq-item__answer p {
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
}

/* ============================================
   CONTACT/FORM SECTION
   ============================================ */
.contact {
    padding: var(--space-16) 0;
    background: var(--color-bg);
    transition: background-color var(--transition-base);
}

.contact__content {
    max-width: 700px;
    margin: 0 auto;
}

.contact__title {
    font-size: clamp(var(--font-size-3xl), 4vw, var(--font-size-4xl));
    font-weight: 600;
    text-align: center;
    margin-bottom: var(--space-4);
    font-family: var(--font-sans);
}

.contact__subtitle {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    text-align: center;
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-10);
}

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

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr));
    gap: var(--space-6);
}

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

.form-input {
    width: 100%;
    padding: var(--space-4);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
    background-color: var(--color-bg);
    min-height: 44px; /* Minimum touch target size */
}

.form-input::placeholder {
    color: var(--color-text-light);
}

.form-input:hover {
    border-color: var(--color-text-muted);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(65, 105, 225, 0.1);
}

.form-badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-6);
}

.form-badge {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: var(--space-12) 0;
    transition: background-color var(--transition-base), border-color var(--transition-base);
}

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

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

.footer__logo {
    color: var(--color-text);
}

.footer__brand-text {
    font-size: var(--font-size-base);
    color: var(--color-text);
}

.footer__brand-text strong {
    font-weight: var(--font-weight-bold);
}

.footer__nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-6);
}

.footer__link {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.footer__link:hover {
    color: var(--color-text);
}

.footer__link:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 4px;
    border-radius: var(--radius-sm);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* Tablet (768px and below) */
@media (max-width: 768px) {
    :root {
        --container-padding: var(--space-4);
        --font-size-5xl: 2.5rem;   /* 40px */
        --font-size-4xl: 2rem;     /* 32px */
    }
    
    /* Sidebar Navigation */
    .nav__menu {
        position: fixed;
        top: 0;
        left: -100%;
        width: 280px;
        height: 100vh;
        background-color: var(--color-bg);
        border-right: 1px solid var(--color-border);
        flex-direction: column;
        align-items: stretch;
        padding: var(--space-20) var(--space-6) var(--space-6);
        gap: var(--space-2);
        transition: left var(--transition-base);
        box-shadow: var(--shadow-lg);
        overflow-y: auto;
        z-index: 999;
    }
    
    .nav__menu.active {
        left: 0;
    }
    
    .nav__link {
        padding: var(--space-4) var(--space-4);
        font-size: var(--font-size-base);
        border-radius: var(--radius-sm);
        transition: all var(--transition-fast);
    }
    
    .nav__link:hover {
        background-color: var(--color-surface);
    }
    
    .nav__link.btn {
        margin-top: var(--space-4);
    }
    
    /* Mobile navigation actions */
    .nav__actions {
        gap: var(--space-2);
        margin-left: auto;
    }
    
    .lang-btn {
        padding: var(--space-2) var(--space-2);
        min-height: 40px;
        gap: var(--space-1);
    }
    
    .lang-btn svg {
        width: 18px;
        height: 18px;
    }
    
    .lang-btn span {
        font-size: var(--font-size-xs);
    }
    
    .nav__toggle {
        display: flex;
    }
    
    .hero {
        padding: var(--space-12) 0 var(--space-10) 0;
        text-align: center;
        min-height: auto;
    }
    
    .hero .container {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .hero__image {
        position: relative !important;
        right: auto !important;
        top: auto !important;
        transform: none !important;
        width: 100% !important;
        max-width: 350px !important;
        margin: var(--space-8) auto 0 !important;
        mask-image: none !important;
        -webkit-mask-image: none !important;
        order: 2;
    }
    
    .hero__image--light {
        display: block;
    }
    
    .hero__image--dark {
        display: none;
    }
    
    [data-theme="dark"] .hero__image--light {
        display: none;
    }
    
    [data-theme="dark"] .hero__image--dark {
        display: block;
    }
    
    .hero__content {
        max-width: 100%;
    }
    
    .hero__title {
        font-size: clamp(2rem, 8vw, 2.5rem);
        margin-bottom: var(--space-5);
    }
    
    .hero__subtitle {
        margin-bottom: var(--space-6);
    }
    
    .hero__features {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-3);
        margin-top: var(--space-5);
    }
    
    .comparison {
        padding: var(--space-12) 0;
    }
    
    .comparison__header {
        margin-bottom: var(--space-10);
    }
    
    .comparison__grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
    
    .comparison__card {
        padding: var(--space-6);
    }
    
    .comparison__title {
        font-size: var(--font-size-xl);
        margin-bottom: var(--space-2);
    }
    
    .comparison__subtitle {
        margin-bottom: var(--space-6);
    }
    
    .comparison__list {
        gap: var(--space-4);
    }
    
    .comparison__badge {
        width: 40px;
        height: 40px;
    }
    
    .comparison__icon-wrapper {
        width: 28px;
        height: 28px;
    }
    
    .how-it-works {
        padding: var(--space-12) 0;
    }
    
    .steps {
        grid-template-columns: 1fr;
        gap: var(--space-6);
        margin-top: var(--space-8);
    }
    
    .services,
    .testimonials,
    .faq,
    .contact {
        padding: var(--space-12) 0;
    }
    
    .services__grid,
    .testimonials__grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
        margin-top: var(--space-8);
    }
    
    .section__title {
        font-size: var(--font-size-3xl);
        margin-bottom: var(--space-3);
    }
    
    .section__subtitle {
        font-size: var(--font-size-base);
        margin-bottom: var(--space-8);
    }
    
    .faq-item__question {
        font-size: var(--font-size-base);
        padding: var(--space-4);
    }
    
    .faq-item__question[aria-expanded="true"] + .faq-item__answer {
        padding: 0 var(--space-4) var(--space-4);
    }
    
    .faq__list {
        margin-top: var(--space-8);
        gap: var(--space-3);
    }
    
    .service-card,
    .testimonial-card,
    .step-card {
        padding: var(--space-6);
    }
    
    .footer__content {
        text-align: center;
    }
    
    .footer__nav {
        flex-direction: column;
        align-items: center;
        gap: var(--space-4);
    }
}

/* Mobile (480px and below) */
@media (max-width: 480px) {
    :root {
        --font-size-5xl: 2rem;     /* 32px */
        --font-size-4xl: 1.75rem;  /* 28px */
        --font-size-3xl: 1.375rem; /* 22px */
        --font-size-2xl: 1.125rem; /* 18px */
        --space-20: 2rem;          /* 32px */
        --space-24: 2.5rem;        /* 40px */
        --space-16: 2rem;          /* 32px */
        --space-12: 2rem;          /* 32px */
        --space-10: 1.5rem;        /* 24px */
        --space-8: 1.25rem;        /* 20px */
        --space-6: 1rem;           /* 16px */
    }
    
    .hero {
        padding: var(--space-8) 0 var(--space-6) 0;
        text-align: center;
        min-height: auto;
    }
    
    .hero .container {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .hero__image {
        position: relative !important;
        right: auto !important;
        top: auto !important;
        transform: none !important;
        width: 100% !important;
        max-width: 450px !important;
        margin: var(--space-6) auto 0 !important;
        mask-image: none !important;
        -webkit-mask-image: none !important;
        order: 2;
    }
    
    .hero__image--light {
        display: block;
    }
    
    .hero__image--dark {
        display: none;
    }
    
    [data-theme="dark"] .hero__image--light {
        display: none;
    }
    
    [data-theme="dark"] .hero__image--dark {
        display: block;
    }
    
    .hero__content {
        max-width: 100%;
        text-align: center;
        order: 1;
    }
    
    .hero__title {
        font-size: clamp(1.625rem, 9vw, 1.875rem);
        line-height: 1.2;
        margin-bottom: var(--space-4);
    }
    
    .hero__subtitle {
        font-size: clamp(0.875rem, 3.5vw, 0.938rem);
        margin-bottom: var(--space-5);
    }
    
    .hero__features {
        flex-direction: column;
        align-items: center;
        gap: var(--space-2);
        margin-top: var(--space-4);
        justify-content: center;
    }
    
    .comparison,
    .services,
    .testimonials,
    .faq,
    .contact {
        padding: var(--space-8) 0;
    }
    
    .comparison__header {
        margin-bottom: var(--space-6);
    }
    
    .comparison__grid {
        gap: var(--space-4);
    }
    
    .comparison__card {
        padding: var(--space-5);
    }
    
    .comparison__badge {
        width: 32px;
        height: 32px;
        margin-bottom: var(--space-4);
    }
    
    .comparison__icon-wrapper {
        width: 24px;
        height: 24px;
    }
    
    .comparison__subtitle {
        margin-bottom: var(--space-5);
    }
    
    .comparison__list {
        gap: var(--space-3);
    }
    
    .comparison__content strong {
        font-size: var(--font-size-sm);
    }
    
    .comparison__content span {
        font-size: var(--font-size-xs);
    }
    
    .service-card,
    .testimonial-card {
        padding: var(--space-5);
    }
    
    .step-card {
        padding: var(--space-5);
    }
    
    .step-card__number {
        width: 44px;
        height: 44px;
        font-size: var(--font-size-xl);
        margin-bottom: var(--space-4);
    }
    
    .section__title {
        margin-bottom: var(--space-3);
    }
    
    .section__subtitle {
        margin-bottom: var(--space-6);
    }
    
    .services__grid,
    .testimonials__grid,
    .steps {
        gap: var(--space-5);
        margin-top: var(--space-6);
    }
    
    .faq__list {
        margin-top: var(--space-6);
        gap: var(--space-3);
    }
    
    .faq-item__question {
        padding: var(--space-3) var(--space-4);
        font-size: var(--font-size-sm);
    }
    
    .faq-item__question[aria-expanded="true"] + .faq-item__answer {
        padding: 0 var(--space-4) var(--space-3);
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }
    
    .contact__form {
        gap: var(--space-4);
    }
    
    .btn--lg {
        padding: var(--space-3) var(--space-5);
        font-size: var(--font-size-sm);
    }
    
    .nav__brand-text {
        font-size: var(--font-size-sm);
    }
}

/* Small tablet (between 481px and 768px) */
@media (min-width: 481px) and (max-width: 768px) {
    .hero__features {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .comparison__grid {
        gap: var(--space-6);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* Medium devices (between 769px and 1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
    .services__grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonials__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Large screens (1536px and above) */
@media (min-width: 1536px) {
    :root {
        --container-max-width: 1400px;
    }
    
    .services__grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .header,
    .nav__toggle,
    .footer {
        display: none;
    }
}

/* ============================================
   ACCESSIBILITY - 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;
    }
}

/* ============================================
   FOCUS VISIBLE POLYFILL
   ============================================ */
:focus:not(:focus-visible) {
    outline: none;
}

/* ============================================
   HIGH CONTRAST MODE SUPPORT
   ============================================ */
@media (prefers-contrast: high) {
    :root {
        --color-border: #000000;
        --color-text-muted: #000000;
    }
    
    .btn--primary {
        border: 2px solid currentColor;
    }
}