/* ===== CSS VARIABLES ===== */
:root {
    /* Typography Scale */
    --text-xs: 0.75rem;   /* 12px */
    --text-sm: 0.875rem;  /* 14px */
    --text-base: 1rem;    /* 16px */
    --text-lg: 1.125rem;  /* 18px */
    --text-xl: 1.25rem;   /* 20px */
    --text-2xl: 1.5rem;   /* 24px */
    --text-3xl: 1.875rem; /* 30px */
    --text-4xl: 2.25rem;  /* 36px */
    --text-5xl: 3rem;     /* 48px */
    --text-6xl: 3.75rem;  /* 60px */
    --text-7xl: 4.5rem;   /* 72px */
    --text-8xl: 6rem;     /* 96px */
    
    /* Spacing Scale */
    --space-xs: 0.5rem;   /* 8px */
    --space-sm: 0.75rem;  /* 12px */
    --space-md: 1rem;     /* 16px */
    --space-lg: 1.5rem;   /* 24px */
    --space-xl: 2rem;     /* 32px */
    --space-2xl: 3rem;    /* 48px */
    --space-3xl: 4rem;    /* 64px */
    --space-4xl: 6rem;    /* 96px */
    --space-5xl: 8rem;    /* 128px */
    
    /* Colors */
    --color-primary: #5E3785;
    --color-primary-hover: #2bcc1f;
    --color-white: #ffffff;
    --color-black: #000000;
    --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;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --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);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ===== RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    font-family: 'Inter', sans-serif;
    font-weight: 400;
    scroll-behavior: smooth;
    overflow-x: hidden;
    background-color: var(--color-white);
    color: var(--color-black);
    font-size: var(--text-base);
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-md);
}

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

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

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

button, 
input, 
textarea {
    font-family: inherit;
    font-size: inherit;
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
    max-width: 1200px;
    margin: 0 auto var(--space-lg);
    padding: 0 var(--space-xl);
    font-size: var(--text-sm);
    font-weight: 500;
}

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

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

.breadcrumb span {
    color: var(--color-gray-500);
}

/* ===== WHITE SECTION ===== */
.white-section {
    background: var(--color-white);
    color: var(--color-black);
    min-height: 100vh;
}

/* ===== MAIN CONTENT ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    /* Увеличено для десктопов: было space-4xl (96px), стало space-5xl (128px) */
    padding: var(--space-5xl) var(--space-xl) var(--space-2xl);
}

.title {
    font-size: var(--text-7xl);
    font-weight: 800;
    text-align: center;
    margin-bottom: var(--space-lg);
    letter-spacing: -0.03em;
    line-height: 1.1;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.8s ease;
}

.title.animated {
    opacity: 1;
    transform: translateY(0);
}

/* ===== FAQ CONTAINER ===== */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

/* ===== QUICK NAVIGATION ===== */
.quick-nav {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
    justify-content: center;
}

.nav-button {
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-black);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-xl);
    font-size: var(--text-sm);
    font-weight: 800;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.nav-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left var(--transition-slow);
}

.nav-button:hover::before {
    left: 100%;
}

.nav-button:hover {
    background: var(--color-gray-800);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ===== FAQ SEARCH ===== */
.faq-search {
    margin-bottom: var(--space-xl);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.faq-search.animated {
    opacity: 1;
    transform: translateY(0);
}

.faq-search-input {
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    font-size: var(--text-base);
    font-family: 'Inter', sans-serif;
    font-weight: 500;
    transition: all var(--transition-base);
}

.faq-search-input:focus {
    outline: none;
    border-color: var(--color-black);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.1);
}

.faq-search-input::placeholder {
    color: var(--color-gray-500);
}

/* ===== SECTION TITLE ===== */
.section-title {
    font-size: var(--text-3xl);
    font-weight: 800;
    margin: var(--space-2xl) 0 var(--space-lg);
    letter-spacing: -0.02em;
    color: var(--color-black);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-gray-200);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.8s ease;
}

.section-title.animated {
    opacity: 1;
    transform: translateY(0);
}

/* ===== FAQ ITEM ===== */
.faq-item {
    margin-bottom: var(--space-md);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
    opacity: 0;
    transform: translateY(20px);
}

.faq-item.animated {
    opacity: 1;
    transform: translateY(0);
}

.faq-item:hover {
    border-color: var(--color-black);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.faq-question {
    background: none;
    border: none;
    padding: var(--space-lg);
    text-align: left;
    width: 100%;
    cursor: pointer;
    font-size: var(--text-lg);
    font-weight: 800;
    color: var(--color-black);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.faq-question::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0,0,0,0.05), transparent);
    transition: left var(--transition-slow);
}

.faq-question:hover::before {
    left: 100%;
}

.faq-question:hover {
    background: var(--color-gray-50);
}

.faq-toggle {
    font-size: var(--text-2xl);
    font-weight: 800;
    transition: transform var(--transition-base);
    color: var(--color-gray-600);
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
    background: var(--color-gray-50);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer-content {
    padding: 0 var(--space-lg) var(--space-lg);
    color: var(--color-gray-600);
    font-weight: 500;
    line-height: 1.6;
}

.faq-answer-content p {
    margin-bottom: var(--space-md);
}

.faq-answer-content p:last-child {
    margin-bottom: 0;
}

/* ===== SEO CONTENT SECTION ===== */
.seo-content-section {
    padding: var(--space-3xl) var(--space-xl);
    background: var(--color-black);
    color: var(--color-white);
    margin-top: var(--space-2xl);
}

.seo-content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-xl);
    max-width: 1200px;
    margin: 0 auto;
}

.seo-card {
    background: rgba(255, 255, 255, 0.1);
    padding: var(--space-2xl) var(--space-lg);
    border-radius: var(--radius-2xl);
    text-align: center;
    transition: all var(--transition-base);
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px) scale(0.9);
}

.seo-card.animated {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.seo-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transition: left var(--transition-slow);
}

.seo-card:hover::before {
    left: 100%;
}

.seo-card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.2);
}

.seo-card h2 {
    font-size: var(--text-2xl);
    font-weight: 800;
    margin-bottom: var(--space-lg);
    letter-spacing: -0.02em;
    color: var(--color-white);
}

.seo-card p {
    font-size: var(--text-base);
    line-height: 1.6;
    opacity: 0.8;
    font-weight: 500;
    margin-bottom: var(--space-xl);
}

.seo-features {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

.seo-feature {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-xl);
    text-align: left;
    transition: all var(--transition-base);
}

.seo-feature:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.seo-feature-icon {
    width: 40px;
    height: 40px;
    background: var(--color-white);
    color: var(--color-black);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    flex-shrink: 0;
    font-size: var(--text-sm);
    transition: all var(--transition-base);
}

.seo-feature:hover .seo-feature-icon {
    transform: scale(1.1);
    background: #5bebbf;
}

.seo-feature-text {
    flex: 1;
}

.seo-feature-text strong {
    color: var(--color-white);
    display: block;
    margin-bottom: var(--space-xs);
    font-weight: 800;
}

.seo-feature-text span {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--text-sm);
    line-height: 1.4;
    font-weight: 500;
}

/* ===== FOOTER ===== */
.footer {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: var(--space-3xl) var(--space-xl);
    background: var(--color-black);
    color: var(--color-white);
}

.footer-column {
    flex: 1;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.footer-column.animated {
    opacity: 1;
    transform: translateY(0);
}

.footer-title {
    font-size: var(--text-lg);
    font-weight: 700;
    margin-bottom: var(--space-lg);
    letter-spacing: -0.02em;
}

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

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

.footer-links a {
    color: var(--color-white);
    text-decoration: none;
    opacity: 0.7;
    transition: opacity var(--transition-base);
    font-size: var(--text-base);
    font-weight: 400;
    letter-spacing: -0.02em;
}

.footer-links a:hover {
    opacity: 1;
}

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

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    transition: all var(--transition-base);
    text-decoration: none;
}

.social-link:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.social-link img {
    width: 20px;
    height: 20px;
}

.email-link {
    color: var(--color-white);
    text-decoration: none;
    opacity: 0.7;
    transition: opacity var(--transition-base);
    font-size: var(--text-base);
    font-weight: 400;
    margin-top: var(--space-sm);
    display: block;
}

.email-link:hover {
    opacity: 1;
}

.copyright {
    font-size: var(--text-sm);
    opacity: 0.5;
    letter-spacing: -0.02em;
    margin-top: var(--space-2xl);
    font-weight: 400;
}

/* ===== LANGUAGE SELECTOR ===== */
.language-selector {
    margin-bottom: var(--space-lg);
}

.language-dropdown-wrapper {
    position: relative;
    display: inline-block;
    width: 100%;
}

.language-dropdown {
    width: 100%;
    padding: var(--space-sm) var(--space-xl) var(--space-sm) var(--space-md);
    border: 1px solid var(--color-gray-600);
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
    font-family: 'Inter', sans-serif;
    font-size: var(--text-base);
    cursor: pointer;
    transition: all 0.3s ease;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.language-dropdown:hover {
    border-color: var(--color-gray-400);
    background: rgba(255, 255, 255, 0.15);
}

.language-dropdown:focus {
    outline: none;
    border-color: var(--color-primary);
    background: rgba(255, 255, 255, 0.2);
    box-shadow: 0 0 0 3px rgba(94, 55, 133, 0.3);
}

.dropdown-arrow {
    position: absolute;
    right: var(--space-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-white);
    pointer-events: none;
    font-size: var(--text-sm);
    transition: transform 0.3s ease;
}

.language-dropdown:focus + .dropdown-arrow {
    transform: translateY(-50%) rotate(180deg);
}

.language-flags {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    padding: var(--space-sm);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.language-flag-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    aspect-ratio: 1;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.language-flag-link:hover {
    background: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(94, 55, 133, 0.4);
}

.language-flag-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.language-flag-link:hover::before {
    left: 100%;
}

.flag-emoji {
    font-size: var(--text-xl);
    line-height: 1;
    filter: grayscale(0.3);
    transition: filter 0.3s ease;
}

.language-flag-link:hover .flag-emoji {
    filter: grayscale(0);
    transform: scale(1.1);
}

.language-flag-link.current-language {
    background: var(--color-primary) !important;
    box-shadow: 0 2px 8px rgba(94, 55, 133, 0.6) !important;
}

/* ===== SEARCH HIGHLIGHT ===== */
.search-highlight {
    background-color: #ffeb3b;
    color: var(--color-black);
    padding: 2px 4px;
    border-radius: 2px;
    font-weight: 800;
}

/* ===== ANIMATION DELAYS ===== */
.quick-nav .nav-button:nth-child(1) { transition-delay: 0.1s; }
.quick-nav .nav-button:nth-child(2) { transition-delay: 0.2s; }
.quick-nav .nav-button:nth-child(3) { transition-delay: 0.3s; }
.quick-nav .nav-button:nth-child(4) { transition-delay: 0.4s; }
.quick-nav .nav-button:nth-child(5) { transition-delay: 0.5s; }

.faq-item:nth-child(1) { transition-delay: 0.1s; }
.faq-item:nth-child(2) { transition-delay: 0.2s; }
.faq-item:nth-child(3) { transition-delay: 0.3s; }
.faq-item:nth-child(4) { transition-delay: 0.4s; }
.faq-item:nth-child(5) { transition-delay: 0.5s; }

.footer-column:nth-child(1) { transition-delay: 0.1s; }
.footer-column:nth-child(2) { transition-delay: 0.2s; }
.footer-column:nth-child(3) { transition-delay: 0.3s; }
.footer-column:nth-child(4) { transition-delay: 0.4s; }

/* ===== RESPONSIVE STYLES ===== */
@media (max-width: 1024px) {
    .title {
        font-size: var(--text-6xl);
    }
}

@media (max-width: 768px) {
    .container {
        /* Увеличено для планшетов: было 3xl (64px), стало 4xl (96px) */
        padding: var(--space-4xl) var(--space-lg) var(--space-xl);
    }
    
    .title {
        font-size: var(--text-5xl);
        margin-bottom: var(--space-md);
    }
    
    .section-title {
        font-size: var(--text-2xl);
        margin: var(--space-xl) 0 var(--space-md);
    }
    
    .faq-question {
        padding: var(--space-lg);
        font-size: var(--text-base);
    }
    
    .quick-nav {
        gap: var(--space-sm);
        margin-bottom: var(--space-lg);
    }
    
    .nav-button {
        padding: var(--space-sm) var(--space-lg);
        font-size: var(--text-xs);
    }
    
    .seo-content-section {
        padding: var(--space-2xl) var(--space-lg);
    }
    
    .seo-content-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .footer {
        flex-direction: column;
        gap: var(--space-xl);
        padding: var(--space-xl) var(--space-lg);
    }

    .language-flags {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-md);
        padding: var(--space-md);
    }
    
    .flag-emoji {
        font-size: var(--text-2xl);
    }
    
    .language-dropdown {
        font-size: var(--text-lg);
    }
}

@media (max-width: 480px) {
    .container {
        /* Увеличено для мобильных: было 2xl (48px), стало 3xl (64px) */
        padding: var(--space-3xl) var(--space-md) var(--space-lg);
    }
    
    .title {
        font-size: var(--text-4xl);
        margin-bottom: var(--space-sm);
    }
    
    .section-title {
        font-size: var(--text-xl);
        margin: var(--space-lg) 0 var(--space-sm);
    }
    
    .faq-question {
        padding: var(--space-md);
        font-size: var(--text-sm);
    }
    
    .quick-nav {
        flex-direction: column;
        align-items: center;
    }
    
    .nav-button {
        width: 200px;
        text-align: center;
    }
    
    .language-flags {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-sm);
    }
}