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

:root {
    --bg-primary: #0E1621;
    --bg-secondary: #17212B;
    --bg-tertiary: #242F3D;
    --accent-primary: #5EBBEA;
    --accent-secondary: #3A7BD5;
    --text-primary: #FFFFFF;
    --text-secondary: #8B9CAD;
    --text-muted: #6C7883;
    --border-color: #2B3E50;
    --gradient-start: #5EBBEA;
    --gradient-end: #3A7BD5;
}

html {
    scroll-behavior: smooth;
}

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

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

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(14, 22, 33, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
}

.nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-icon {
    width: 42px;
    height: 42px;
    border-radius: 10px;
}

.logo-full {
    width: auto;
    height: 50px;
    border-radius: 10px;
}

.logo-text {
    font-family: 'Montserrat', sans-serif;
    font-size: 22px;
    font-weight: 700;
    color: var(--accent-primary);
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-link {
    font-family: 'Montserrat', sans-serif;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    text-decoration: none;
    letter-spacing: 0.5px;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: width 0.3s ease;
}

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

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

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

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

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

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

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 20px;
    z-index: 999;
    flex-direction: column;
    gap: 15px;
}

.mobile-menu.active {
    display: flex;
}

.mobile-menu-link {
    font-family: 'Montserrat', sans-serif;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
}

.mobile-menu-link:hover {
    color: var(--accent-primary);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: url('/images/fon.jpg') center/cover no-repeat;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(14, 22, 33, 0.7) 0%,
        rgba(14, 22, 33, 0.5) 50%,
        rgba(14, 22, 33, 0.9) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 20px;
}

.hero-title {
    font-family: 'Montserrat', sans-serif;
    font-size: clamp(36px, 8vw, 72px);
    font-weight: 800;
    color: var(--text-primary);
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    margin-bottom: 20px;
    letter-spacing: 3px;
}

.hero-subtitle {
    font-family: 'Montserrat', sans-serif;
    font-size: clamp(16px, 3vw, 24px);
    font-weight: 500;
    color: var(--accent-primary);
    letter-spacing: 4px;
    margin-bottom: 40px;
}

.hero-btn {
    display: inline-block;
    padding: 16px 40px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: var(--text-primary);
    font-family: 'Montserrat', sans-serif;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 20px rgba(94, 187, 234, 0.3);
}

.hero-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(94, 187, 234, 0.4);
}

/* Sections */
.section {
    padding: 100px 0;
}

.section-title {
    font-family: 'Montserrat', sans-serif;
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 800;
    text-align: center;
    margin-bottom: 60px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* About Section */
.about {
    background: var(--bg-secondary);
}

.about-text {
    max-width: 800px;
    margin: 0 auto 60px;
    text-align: center;
    font-size: 18px;
    line-height: 1.8;
    color: var(--text-secondary);
}

/* Download Grid */
.download-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 80px;
}

.download-card {
    background: var(--bg-tertiary);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.download-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.download-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.download-icon svg {
    width: 40px;
    height: 40px;
    color: white;
}

.download-icon.android {
    background: linear-gradient(135deg, #3DDC84, #2ECC71);
}

.download-icon.ios {
    background: linear-gradient(135deg, #555, #333);
}

.download-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.download-subtitle {
    font-size: 14px;
    color: var(--accent-primary);
    margin-bottom: 20px;
    line-height: 1.5;
}

.download-btn {
    display: inline-block;
    padding: 14px 32px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    font-family: 'Montserrat', sans-serif;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    border-radius: 10px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(94, 187, 234, 0.4);
}

.qr-code {
    width: 150px;
    height: 150px;
    margin: 0 auto;
    background: white;
    border-radius: 10px;
    padding: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qr-code canvas,
.qr-code img {
    max-width: 100%;
    max-height: 100%;
}

/* Screenshots */
.screenshots-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 28px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 40px;
    color: var(--text-primary);
}

.screenshots-slider {
    overflow: hidden;
    padding: 20px 0;
}

.screenshots-track {
    display: flex;
    gap: 30px;
    animation: scroll 30s linear infinite;
}

.screenshots-track:hover {
    animation-play-state: paused;
}

@keyframes scroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(calc(-250px * 5 - 150px));
    }
}

.screenshot-item {
    flex-shrink: 0;
    width: 250px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
}

.screenshot-item:hover {
    transform: scale(1.05);
}

.screenshot-item img {
    width: 100%;
    height: auto;
    display: block;
}

/* Neural Networks Section */
.neural {
    background: var(--bg-primary);
}

.neural-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

.neural-card {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 30px;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.neural-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
    border-color: var(--accent-primary);
}

.neural-icon {
    width: 60px;
    height: 60px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-family: 'Montserrat', sans-serif;
    font-size: 18px;
    font-weight: 800;
    color: white;
}

.neural-name {
    font-family: 'Montserrat', sans-serif;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.neural-desc {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-secondary);
}

/* Contacts Section */
.contacts {
    background: var(--bg-secondary);
}

/* Contacts Row - inline display */
.contacts-row {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 60px;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

.contact-inline {
    display: flex;
    align-items: center;
    gap: 15px;
    text-decoration: none;
    transition: transform 0.3s ease;
}

.contact-inline:hover {
    transform: translateY(-3px);
}

.contact-inline .contact-icon {
    width: 60px;
    height: 60px;
    background: var(--bg-tertiary);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-inline .contact-icon svg {
    width: 28px;
    height: 28px;
    color: var(--accent-primary);
}

.contact-inline .contact-icon.telegram {
    background: linear-gradient(135deg, #2AABEE, #229ED9);
}

.contact-inline .contact-icon.telegram svg {
    color: white;
}

.contact-value-large {
    font-family: 'Montserrat', sans-serif;
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
    transition: color 0.3s ease;
}

.contact-inline:hover .contact-value-large {
    color: var(--accent-primary);
}

/* Requisites section */
.requisites-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.contacts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contacts-subtitle {
    font-family: 'Montserrat', sans-serif;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 30px;
    color: var(--text-primary);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 25px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--bg-tertiary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
    color: var(--accent-primary);
}

.contact-icon.telegram {
    background: linear-gradient(135deg, #2AABEE, #229ED9);
}

.contact-icon.telegram svg {
    color: white;
}

.contact-text {
    display: flex;
    flex-direction: column;
}

.contact-label {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.contact-value {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-value:hover {
    color: var(--accent-primary);
}

/* Company Card */
.company-card,
.bank-card {
    background: var(--bg-tertiary);
    border-radius: 16px;
    padding: 30px;
    border: 1px solid var(--border-color);
}

.company-name {
    font-family: 'Montserrat', sans-serif;
    font-size: 20px;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 8px;
}

.company-address {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 25px;
}

.requisites-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.requisite-item {
    display: flex;
    flex-direction: column;
}

.requisite-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.requisite-value {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
    font-family: 'Montserrat', sans-serif;
}

.bank-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.bank-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--accent-primary);
    margin-bottom: 4px;
}

.bank-city {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.bank-details {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.bank-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.bank-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.bank-label {
    font-size: 13px;
    color: var(--text-muted);
}

.bank-value {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    font-family: 'Montserrat', sans-serif;
}

/* Footer */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: 40px 0;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 25px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-logo-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
}

.footer-logo-full {
    height: 45px;
    width: auto;
    border-radius: 8px;
}

.footer-logo-text {
    font-family: 'Montserrat', sans-serif;
    font-size: 18px;
    font-weight: 700;
    color: var(--accent-primary);
}

.footer-links {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-link {
    font-size: 14px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-copyright {
    font-size: 13px;
    color: var(--text-muted);
    text-align: center;
}

/* Responsive */
@media (max-width: 1024px) {
    .download-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .download-card-ios {
        grid-column: span 2;
        max-width: 400px;
        justify-self: center;
    }

    .contacts-grid {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .requisites-section {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .contacts-row {
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .download-grid {
        grid-template-columns: 1fr;
    }

    .download-card-ios {
        grid-column: auto;
        max-width: none;
        width: 100%;
    }

    /* More compact neural grid on mobile */
    .neural-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .neural-card {
        padding: 20px;
        display: flex;
        flex-direction: row;
        align-items: flex-start;
        gap: 15px;
    }

    .neural-icon {
        width: 50px;
        height: 50px;
        min-width: 50px;
        margin-bottom: 0;
        font-size: 14px;
        border-radius: 12px;
    }

    .neural-card-content {
        flex: 1;
    }

    .neural-name {
        font-size: 16px;
        margin-bottom: 6px;
    }

    .neural-desc {
        font-size: 13px;
        line-height: 1.5;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .requisites-grid {
        grid-template-columns: 1fr;
    }

    .section {
        padding: 60px 0;
    }

    .section-title {
        margin-bottom: 40px;
    }

    .screenshots-track {
        animation-duration: 20s;
    }

    .screenshot-item {
        width: 200px;
    }

    @keyframes scroll {
        0% {
            transform: translateX(0);
        }
        100% {
            transform: translateX(calc(-200px * 5 - 150px));
        }
    }

    .contacts-row {
        flex-direction: column;
        gap: 25px;
        align-items: flex-start;
    }

    .contact-inline {
        width: 100%;
    }

    .contact-value-large {
        font-size: 18px;
    }

    .contact-inline .contact-icon {
        width: 50px;
        height: 50px;
    }

    .contact-inline .contact-icon svg {
        width: 24px;
        height: 24px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        letter-spacing: 1px;
    }

    .hero-subtitle {
        letter-spacing: 2px;
    }

    .download-card {
        padding: 30px 20px;
    }

    .qr-code {
        width: 120px;
        height: 120px;
    }

    .contact-item {
        gap: 15px;
    }

    .contact-icon {
        width: 44px;
        height: 44px;
    }

    .company-card,
    .bank-card {
        padding: 20px;
    }

    .footer-links {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }

    .logo-full {
        height: 40px;
    }
}