/* style.css – Neirox финал (исправлен мобильный скролл, без сдвига hero) + светлый хедер при скролле */
:root {
    --bg-dark: #0B0D17;
    --bg-card: rgba(255,255,255,0.04);
    --glass-border: rgba(255,255,255,0.08);
    --accent-primary: #4F46E5;
    --accent-secondary: #7C3AED;
    --accent-grad: linear-gradient(135deg, #4F46E5, #7C3AED, #A855F7);
    --accent-cyan: #06D6A0;
    --accent-orange: #F59E0B;
    --text-white: #FFFFFF;
    --text-light: #B0B3CB;
    --border-radius-lg: 32px;
    --border-radius-md: 24px;
    --shadow-neon: 0 0 15px rgba(79,70,229,0.5);
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
    font-family: 'Inter', 'Manrope', sans-serif;
    background: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.5;
    overflow-x: hidden; /* только запрет горизонтального скролла, без сдвига */
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Типографика */
h1, h2, h3, .btn {
    font-family: 'Clash Display', 'Space Grotesk', 'Montserrat', sans-serif;
    font-weight: 700;
}

h1 {
    font-size: 4rem;
    line-height: 1.2;
    background: var(--accent-grad);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 1rem;
}
h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-white);
}
h3 {
    font-size: 1.6rem;
    margin-bottom: 0.75rem;
    color: var(--text-white);
}
p {
    font-size: 1rem;
    color: var(--text-light);
    margin-bottom: 1rem;
}

/* Кнопки */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 40px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
}
.btn-primary {
    background: var(--accent-grad);
    color: white;
    box-shadow: 0 4px 20px rgba(79,70,229,0.4);
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(79,70,229,0.6);
}
.btn-secondary {
    background: transparent;
    border: 2px solid var(--accent-cyan);
    color: var(--accent-cyan);
}
.btn-secondary:hover {
    background: rgba(6,214,160,0.1);
    transform: translateY(-3px);
    box-shadow: 0 0 15px rgba(6,214,160,0.3);
}
.btn-outline {
    background: transparent;
    border: 2px solid var(--glass-border);
    color: var(--text-white);
}
.btn-outline:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: 0 0 12px rgba(79,70,229,0.4);
}
.btn-lg {
    padding: 14px 40px;
    font-size: 1.1rem;
}

/* Стеклянные карточки */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
    transition: var(--transition);
}
.glass-card:hover {
    border-color: var(--accent-cyan);
    box-shadow: 0 8px 25px rgba(6,214,160,0.15);
    transform: translateY(-5px);
}

/* Хедер – изменён фон при скролле на более светлый */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 20px 0;
    transition: background 0.3s, backdrop-filter 0.3s;
}
.header.scrolled {
    /* Делаем фон более плотным и светлым, чтобы не сливался с тёмным фоном */
    background: rgba(20, 25, 40, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
}
.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo svg, .logo img {
    height: 44px;
    width: auto;
}
.nav__list {
    display: flex;
    gap: 32px;
    list-style: none;
    align-items: center;
}
.nav__list a {
    text-decoration: none;
    color: var(--text-light);
    font-weight: 500;
    transition: color 0.2s;
}
.nav__list a:hover {
    color: var(--accent-cyan);
}
.nav__list .btn {
    padding: 8px 22px;
}
.mobile-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
}
.mobile-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background: white;
    margin: 5px 0;
    border-radius: 2px;
}

/* Hero с анимированными частицами */
.hero {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}
#hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}
.hero__content {
    position: relative;
    z-index: 2;
    max-width: 700px;
}
.hero__content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}
.hero__buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}
.hero__stats {
    display: flex;
    gap: 40px;
    border-top: 1px solid var(--glass-border);
    padding-top: 30px;
}
.hero__stats div span {
    display: block;
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--accent-cyan);
}
.hero__stats div {
    color: var(--text-light);
}

/* Секция сервисов */
.services {
    padding: 80px 0;
}
.section-header {
    text-align: center;
    margin-bottom: 60px;
}
.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}
.service-card {
    text-align: center;
    padding: 40px 24px;
}
.service-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    color: var(--accent-cyan);
}
.service-card h3 {
    margin-bottom: 12px;
}
.service-card p {
    font-size: 0.95rem;
}

/* Как это работает */
.how-it-works {
    padding: 80px 0;
    background: rgba(255,255,255,0.02);
}
.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    position: relative;
}
.step {
    text-align: center;
    position: relative;
}
.step-number {
    width: 60px;
    height: 60px;
    background: var(--accent-grad);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.5rem;
    margin: 0 auto 20px;
    color: white;
}
.step p {
    margin-top: 10px;
}
@media (min-width: 768px) {
    .steps::before {
        content: '';
        position: absolute;
        top: 30px;
        left: 10%;
        width: 80%;
        height: 2px;
        background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
        z-index: 0;
    }
    .step {
        background: transparent;
        z-index: 1;
    }
}

/* Партнёрская программа */
.partner {
    padding: 80px 0;
}
.partner__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.partner__content ul {
    list-style: none;
    margin: 24px 0;
}
.partner__content li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}
.partner__content li i {
    color: var(--accent-cyan);
}
.network-viz {
    background: rgba(255,255,255,0.02);
    border-radius: 32px;
    padding: 30px;
    text-align: center;
    transition: var(--transition);
}
.network-viz:hover {
    transform: scale(1.02);
    box-shadow: 0 0 25px rgba(6,214,160,0.2);
}
.network-viz svg {
    width: 100%;
    max-width: 400px;
    height: auto;
}
.network-node {
    fill: var(--accent-cyan);
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0% { opacity: 0.6; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.05); }
    100% { opacity: 0.6; transform: scale(1); }
}

/* Отзывы – фикс мобильного скролла (без сдвига страницы) */
.testimonials {
    padding: 80px 0;
    background: rgba(255,255,255,0.02);
}
.testimonials-carousel {
    display: flex;
    gap: 24px;
    padding-bottom: 20px;
}
@media (min-width: 769px) {
    .testimonials-carousel {
        flex-wrap: wrap;
        justify-content: center;
    }
    .testimonial-card {
        flex: 0 0 320px;
    }
}
@media (max-width: 768px) {
    .testimonials-carousel {
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
        padding-left: 24px;
        padding-right: 24px;
    }
    .testimonial-card {
        flex: 0 0 280px;
        scroll-snap-align: start;
    }
}
.testimonial-card {
    padding: 24px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition);
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
}
.testimonial-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-cyan);
    box-shadow: 0 8px 25px rgba(6,214,160,0.15);
}
.testimonial-text {
    flex: 1;
    font-style: italic;
    margin-bottom: 16px;
}
.testimonial-author {
    margin-top: auto;
    text-align: center;
    padding-top: 12px;
    border-top: 1px solid var(--glass-border);
}
.author-name {
    font-weight: 800;
    color: var(--text-white);
    margin-bottom: 4px;
}
.author-role {
    font-size: 0.8rem;
    color: var(--text-light);
}
.testimonial-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--accent-grad);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}
.testimonial-avatar i {
    font-size: 1.5rem;
    color: white;
}

/* Футер */
.footer {
    background: #07090f;
    padding: 60px 0 30px;
    border-top: 1px solid var(--glass-border);
}
.footer__inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
}
.footer__col h4 {
    color: white;
    margin-bottom: 16px;
}
.footer__col ul {
    list-style: none;
}
.footer__col li {
    margin-bottom: 10px;
}
.footer__col a {
    color: var(--text-light);
    text-decoration: none;
}
.footer__col a:hover {
    color: var(--accent-cyan);
}
.footer__bottom {
    text-align: center;
    padding-top: 30px;
    margin-top: 30px;
    border-top: 1px solid var(--glass-border);
    font-size: 0.8rem;
}

/* Анимации появления при скролле */
.fade-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s, transform 0.8s;
}
.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Адаптивность */
@media (max-width: 1024px) {
    h1 { font-size: 3rem; }
    .partner__grid { grid-template-columns: 1fr; text-align: center; }
}
@media (max-width: 768px) {
    .mobile-toggle { display: block; }
    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: #0B0D17;
        backdrop-filter: blur(20px);
        padding: 80px 24px 24px;
        transition: right 0.3s;
        z-index: 99;
    }
    .nav.active { right: 0; }
    .nav__list { flex-direction: column; align-items: flex-start; gap: 20px; }
    .hero { text-align: center; }
    .hero__buttons { justify-content: center; }
    .hero__stats { justify-content: center; flex-wrap: wrap; }
    .steps::before { display: none; }
    .footer__inner { grid-template-columns: 1fr; text-align: center; gap: 30px; }
    h1 { font-size: 2.2rem; }
    h2 { font-size: 1.8rem; }
}