/* ==========================================================================
   1. СБРОС СТИЛЕЙ, ПЕРЕМЕННЫЕ И БАЗОВЫЕ НАСТРОЙКИ
   ========================================================================== */

:root {
    --bg-dark: #0B0F19;         /* Глубокий темный фон */
    --bg-card: #161B26;         /* Фон карточек */
    --accent: #00F2FE;          /* Неоновый голубой */
    --accent-purple: #4FACFE;   /* Фиолетовый для градиентов */
    --text-main: #FFFFFF;       /* Белый текст */
    --text-muted: #94A3B8;      /* Серый текст */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

body.no-scroll {
    overflow: hidden; /* Блокировка прокрутки при открытом меню/модалке */
}

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

/* Общие отступы для всех секций сайта */
.services, .cases, .process, .pricing, .faq, .audit-section {
    padding: 100px 0;
}

/* Чередование фонов для визуального разделения блоков */
.services, .process, .audit-section { 
    background: rgba(22, 27, 38, 0.4); 
}
.cases, .pricing, .faq { 
    background: var(--bg-dark); 
}

/* Общие заголовки секций */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}


/* ==========================================================================
   2. БАЗОВЫЕ КОМПОНЕНТЫ (КНОПКИ И ПЕРЕКЛЮЧАТЕЛЬ ЯЗЫКОВ)
   ========================================================================== */

/* Кнопки */
.btn {
    display: inline-block;
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-purple), var(--accent));
    color: #0B0F19;
    box-shadow: 0 4px 15px rgba(0, 242, 254, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 242, 254, 0.5);
}

.btn-secondary {
    background: rgba(0, 242, 254, 0.1);
    color: var(--accent);
    border: 1px solid rgba(0, 242, 254, 0.3);
}

.btn-secondary:hover {
    background: rgba(0, 242, 254, 0.2);
}

.btn-outline {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-main);
}

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
}

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

/* Переключатель языков (RU/EN) */
.lang-switcher {
    display: flex;
    align-items: center;
    gap: 5px;
    margin-right: 20px;
    color: var(--text-main);
}

.lang-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-weight: 600;
    transition: 0.3s;
}

.lang-btn.active {
    color: var(--accent);
}

.lang-btn:hover {
    color: var(--text-main);
}


/* ==========================================================================
   3. ШАПКА САЙТА (HEADER) & МОБИЛЬНОЕ МЕНЮ
   ========================================================================== */

header {
    background: rgba(11, 15, 25, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 1px;
}

.logo-seo { 
    color: var(--text-main); 
}

.logo-adv { 
    color: var(--accent); 
    background: linear-gradient(to right, var(--accent), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-menu a {
    color: var(--text-muted);
    text-decoration: none;
    margin-right: 30px;
    font-weight: 500;
    transition: var(--transition);
}

.nav-menu a:hover {
    color: var(--accent);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

/* Кнопка-бургер */
.burger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1010;
}

.burger span {
    width: 100%;
    height: 3px;
    background-color: var(--text-main);
    border-radius: 10px;
    transition: var(--transition);
}

/* Анимация бургера при активации */
.burger.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
    background-color: var(--accent);
}

.burger.active span:nth-child(2) {
    opacity: 0;
}

.burger.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
    background-color: var(--accent);
}


/* ==========================================================================
   4. ГЛАВНЫЙ ЭКРАН (HERO SECTION)
   ========================================================================== */

.hero {
    padding: 180px 0 100px 0;
    position: relative;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 50px;
    align-items: center;
}

.badge {
    background: rgba(0, 242, 254, 0.1);
    color: var(--accent);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 20px;
    border: 1px solid rgba(0, 242, 254, 0.2);
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
}

.highlight {
    background: linear-gradient(135deg, var(--accent), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: 35px;
    max-width: 600px;
}

.hero-actions-hero {
    display: flex;
    gap: 15px;
    margin-bottom: 40px;
}

.hero-trust {
    display: flex;
    gap: 25px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.hero-trust i {
    color: var(--accent);
    margin-right: 5px;
}

/* График роста (справа) */
.chart-container {
    background: var(--bg-card);
    border-radius: 20px;
    height: 350px;
    display: flex;
    align-items: flex-end;
    justify-content: space-around;
    padding: 40px;
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.bar {
    width: 45px;
    border-radius: 8px 8px 0 0;
    background: linear-gradient(to top, rgba(0, 242, 254, 0.1), var(--accent));
    animation: grow 2s ease-out forwards;
}

.bar-1 { height: 30%; animation-delay: 0.2s; }
.bar-2 { height: 55%; animation-delay: 0.4s; }
.bar-3 { 
    height: 85%; 
    background: linear-gradient(to top, var(--accent-purple), var(--accent));
    animation-delay: 0.6s; 
}

.chart-badge {
    position: absolute;
    top: 30px;
    right: 30px;
    background: rgba(0, 242, 254, 0.2);
    border: 1px solid var(--accent);
    color: #fff;
    padding: 8px 15px;
    border-radius: 50px;
    font-weight: 700;
}

@keyframes grow {
    from { height: 0; }
}


/* ==========================================================================
   5. УСЛУГИ (SERVICES)
   ========================================================================== */

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.03);
    padding: 40px 30px;
    border-radius: 16px;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 242, 254, 0.3);
    box-shadow: 0 10px 30px rgba(0, 242, 254, 0.05);
}

.service-icon {
    font-size: 2rem;
    color: var(--accent);
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.service-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}


/* ==========================================================================
   6. КЕЙСЫ (CASES & SWIPER SLIDER)
   ========================================================================== */

.cases-swiper {
    padding: 20px 0 50px 0 !important;
}

.swiper-wrapper {
    display: flex; 
}

.swiper-slide {
    height: auto !important;
    display: flex;
}

.case-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.03);
    padding: 30px;
    border-radius: 16px;
    width: 100%; 
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

.case-link {
    display: inline-block;
    color: var(--accent);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 15px;
    text-decoration: none;
}

.case-link i {
    margin-left: 5px;
    font-size: 0.7rem;
}

.case-link:hover {
    text-decoration: underline;
}


.case-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 242, 254, 0.3);
    box-shadow: 0 10px 30px rgba(0, 242, 254, 0.05);
}

.case-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-main);
}

.case-description {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 25px;
    flex-grow: 1;
}

.case-metrics {
    margin-bottom: 25px;
}

.metric-item {
    font-size: 0.9rem;
    color: var(--text-main);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
}

.metric-item i {
    color: var(--accent);
    margin-right: 10px;
    font-size: 1.1rem;
}

.case-btn {
    margin-top: auto; 
    align-self: flex-start;
    padding: 10px 20px;
    font-size: 0.9rem;
}

/* Стили элементов навигации Swiper */
.swiper-button-next, .swiper-button-prev {
    color: var(--accent) !important;
}

.swiper-pagination-bullet {
    background: var(--text-muted) !important;
}

.swiper-pagination-bullet-active {
    background: var(--accent) !important;
}


/* ==========================================================================
   7. ПРОЦЕСС РАБОТЫ (PROCESS)
   ========================================================================== */

.process-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.process-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.03);
    padding: 40px 30px;
    border-radius: 16px;
    position: relative;
    transition: var(--transition);
    overflow: hidden;
}

.process-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 242, 254, 0.3);
    box-shadow: 0 10px 30px rgba(0, 242, 254, 0.05);
}

.process-num {
    font-size: 5rem;
    font-weight: 800;
    background: linear-gradient(135deg, rgba(0, 242, 254, 0.15), rgba(79, 172, 254, 0.02));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    position: absolute;
    top: -10px;
    right: 10px;
    user-select: none;
}

.process-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    position: relative;
    z-index: 2;
}

.process-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    position: relative;
    z-index: 2;
}


/* ==========================================================================
   8. ПАКЕТЫ УСЛУГ И ТАРИФЫ (PRICING)
   ========================================================================== */

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    align-items: stretch;
}

.pricing-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 40px;
    border-radius: 20px;
    transition: var(--transition);
    position: relative;
    display: flex;
    flex-direction: column;
}

.pricing-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 242, 254, 0.3);
    box-shadow: 0 10px 30px rgba(0, 242, 254, 0.1);
}

/* Рекомендуемый тариф */
.pricing-card.recommended {
    border-color: var(--accent);
    background: linear-gradient(145deg, rgba(0, 242, 254, 0.08), rgba(79, 172, 254, 0.08));
    box-shadow: 0 15px 40px rgba(0, 242, 254, 0.2);
}

.recommended .package-name {
    background: linear-gradient(135deg, var(--accent), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.recommended-badge {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translate(-50%, -50%);
    background: linear-gradient(45deg, var(--accent-purple), var(--accent));
    color: #0B0F19;
    padding: 6px 18px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.8rem;
    box-shadow: 0 4px 10px rgba(0, 242, 254, 0.4);
}

.package-name {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.package-price {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 15px;
}

.package-price span {
    font-size: 3rem;
}

.package-description {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 30px;
    flex-grow: 1;
}

.package-features {
    list-style: none;
    margin-bottom: 30px;
}

.package-features li {
    font-size: 0.95rem;
    margin-bottom: 12px;
    color: var(--text-main);
    display: flex;
    align-items: center;
}

.package-features li i {
    color: var(--accent);
    margin-right: 10px;
    font-size: 1.1rem;
}


/* ==========================================================================
   9. ЧАСТО ЗАДАВАЕМЫЕ ВОПРОСЫ (FAQ)
   ========================================================================== */

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

.faq-item {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    margin-bottom: 15px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: rgba(0, 242, 254, 0.2);
    box-shadow: 0 5px 15px rgba(0, 242, 254, 0.02);
}

.faq-question {
    padding: 24px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.1rem;
    user-select: none;
    transition: var(--transition);
}

.faq-question span {
    padding-right: 20px;
}

.faq-question i {
    color: var(--accent);
    font-size: 1rem;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease;
    padding: 0 30px;
}

.faq-answer p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
    padding-bottom: 24px;
}

/* FAQ Активное открытое состояние */
.faq-item.active {
    border-color: var(--accent);
    box-shadow: 0 10px 30px rgba(0, 242, 254, 0.05);
}

.faq-item.active .faq-question {
    color: var(--accent);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}


/* ==========================================================================
   10. БЛОК АУДИТА И ФОРМА ОБРАТНОЙ СВЯЗИ (AUDIT FORM)
   ========================================================================== */

.audit-container {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
}

.audit-info h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.audit-info p {
    color: var(--text-muted);
    margin-bottom: 30px;
}

.audit-list {
    list-style: none;
}

.audit-list li {
    margin-bottom: 15px;
    font-weight: 500;
}

.text-accent {
    color: var(--accent);
    margin-right: 10px;
}

.audit-card-form {
    background: var(--bg-card);
    padding: 40px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.audit-card-form h3 {
    margin-bottom: 25px;
    font-size: 1.5rem;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    color: var(--text-muted);
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.form-group input {
    width: 100%;
    padding: 14px;
    background: rgba(11, 15, 25, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: #fff;
    outline: none;
    transition: var(--transition);
}

.form-group input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 10px rgba(0, 242, 254, 0.1);
}


/* ==========================================================================
   11. ФУТЕР И КОПИРАЙТ (FOOTER)
   ========================================================================== */

footer {
    padding: 40px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}


/* ==========================================================================
   12. МОДАЛЬНОЕ ОКНО И ПОПАПЫ (POP-UPS)
   ========================================================================== */

/* Оверлей размытия заднего фона */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(11, 15, 25, 0.85);
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: all;
}

/* Модальная карточка */
.modal {
    background-color: var(--bg-card);
    border: 1px solid rgba(0, 242, 254, 0.2);
    width: 90%;
    max-width: 480px;
    padding: 40px;
    border-radius: 20px;
    position: relative;
    box-shadow: 0 15px 40px rgba(0, 242, 254, 0.15);
    transform: scale(0.8) translateY(-30px);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

/* Кнопка закрытия */
.modal-close {
    position: absolute;
    top: 20px;
    right: 25px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 2rem;
    cursor: pointer;
    line-height: 1;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--accent);
}

.modal h3 {
    font-size: 1.8rem;
    margin-bottom: 12px;
    padding-right: 20px;
    background: linear-gradient(135deg, var(--text-main), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.modal-subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 25px;
    line-height: 1.5;
}


/* ==========================================================================
   13. АДАПТИВНОСТЬ И МЕДИА-ЗАПРОСЫ (MEDIA QUERIES)
   ========================================================================== */

/* --- Адаптивность для Планшетов и Нетбуков (max-width: 992px) --- */
@media (max-width: 992px) {
    .hero-container, .audit-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero h1 { 
        font-size: 2.5rem; 
    }
    
    .hero-actions-hero {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .hero-trust {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .chart-container {
        display: none; /* Скрываем 3D-график на планшетах/смартфонах */
    }

    /* Активация выезжающего мобильного меню */
    .burger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: rgba(11, 15, 25, 0.98);
        backdrop-filter: blur(20px);
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 30px;
        transition: var(--transition);
        z-index: 1000;
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-menu a {
        font-size: 1.5rem;
        margin-right: 0;
        font-weight: 600;
    }

    .header-cta {
        padding: 10px 18px;
        font-size: 0.9rem;
    }

    .cases-grid, .pricing-grid, .process-grid {
        grid-template-columns: 1fr;
    }

    .case-card, .pricing-card, .process-card {
        padding: 30px;
    }

    .pricing-card.recommended {
        padding-top: 60px;
    }

    .pricing-card .btn-block {
        margin-top: 20px;
    }
}

/* --- Адаптивность для Портретных Планшетов (max-width: 768px) --- */
@media (max-width: 768px) {
    .faq-question {
        padding: 20px;
        font-size: 1rem;
    }
    .faq-answer {
        padding: 0 20px;
    }
    .faq-answer p {
        padding-bottom: 20px;
    }
}

/* --- Адаптивность для Мобильных (max-width: 576px) --- */
@media (max-width: 576px) {
    .modal {
        padding: 30px 20px;
    }
    .modal h3 {
        font-size: 1.5rem;
    }
}

/* --- Адаптивность для Узких Смартфонов (max-width: 480px) --- */
@media (max-width: 480px) {
    .header-cta {
        display: none; /* Прячем кнопку аудита в хедере на самых мелких дисплеях */
    }
}