/* SLATECH - Modern AI-Focused IT Company Website */
/* RTL Support, Modern Design, SEO Optimized */

/* Original */
:root {
    --primary-color: #0066cc;
    --primary-dark: #004999;
    --ai-purple: #7c3aed;
    --ai-blue: #0ea5e9;
    /*    
        --ai-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        --ai-gradient: linear-gradient(135deg, #161848 0%, #1CA2A5 100%);
    */
    --ai-gradient: linear-gradient(135deg, #0066FF 0%, #00D4AA 100%);
    --dark-bg: #0f172a;
    --dark-surface: #1e293b;
    --light-bg: #ffffff;
    --light-surface: #f8fafc;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --transition-normal: 300ms ease;
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}
/**/

/* From SLAtech.ru */
/*:root {*/
    /* Brand Colors - Professional Tech Palette */
    /*--primary: #0066FF;
    --primary-dark: #0052CC;
    --primary-light: #3385FF;
    --secondary: #00D4AA;
    --accent: #FF6B35;*/
    /* Neutral Scale */
    /*--dark: #0A1628;
    --dark-blue: #1A2B42;
    --medium: #455A7A;
    --light-gray: #E8ECF1;
    --white: #FFFFFF;*/
    /* Semantic Colors */
    /*--success: #00D4AA;
    --warning: #FFB020;
    --error: #E63946;*/
    /* Gradients */
    /*--gradient-primary: linear-gradient(135deg, #0066FF 0%, #00D4AA 100%);
    --gradient-dark: linear-gradient(180deg, #0A1628 0%, #1A2B42 100%);
    --gradient-overlay: linear-gradient(135deg, rgba(0,102,255,0.9) 0%, rgba(0,212,170,0.85) 100%);*/
    /* Shadows */
    /*--shadow-sm: 0 2px 8px rgba(10, 22, 40, 0.08);
    --shadow-md: 0 4px 16px rgba(10, 22, 40, 0.12);
    --shadow-lg: 0 8px 32px rgba(10, 22, 40, 0.16);
    --shadow-xl: 0 16px 48px rgba(10, 22, 40, 0.24);*/
    /* Typography */
    /*--font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Inter', sans-serif;*/
    /* Spacing */
    /*--section-padding: clamp(60px, 10vw, 120px);
    --container-padding: clamp(20px, 5vw, 40px);*/
    /* Transitions */
    /*--transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}*/
/* End From SLAtech.ru */


/* New from SLAtech.ru */
/*:root {*/
    /* === Brand mapping (compat layer) === */
    /* Primary */
    /*--primary-color: #0066FF;*/ /* primary */
    /*--primary-dark: #0052CC;*/ /* primary-dark */
    /* AI / Accent */
    /*--ai-blue: #0066FF;
    --ai-purple: #00D4AA;*/ /* secondary / success */
    /*--ai-gradient: linear-gradient( 135deg, #0066FF 0%, #00D4AA 100% );*/
    /* Backgrounds */
    /*--dark-bg: #0A1628;*/ /* dark */
    /*--dark-surface: #1A2B42;*/ /* dark-blue */
    /*--light-bg: #FFFFFF;*/ /* white */
    /*--light-surface: #E8ECF1;*/ /* light-gray */
    /* Text */
    /*--text-primary: #0A1628;*/ /* dark */
    /*--text-secondary: #455A7A;*/ /* medium */
    /* Spacing (unchanged) */
    /*--spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;*/
    /* Radius */
    /*--radius-lg: 0.75rem;
    --radius-xl: 1rem;*/
    /* Transitions */
    /*--transition-normal: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);*/
    /* Shadows (brand-consistent) */
    /*--shadow-md: 0 4px 16px rgba(10, 22, 40, 0.12);
    --shadow-lg: 0 8px 32px rgba(10, 22, 40, 0.16);
    --shadow-xl: 0 16px 48px rgba(10, 22, 40, 0.24);*/
    /* Gradients */
    /*--gradient-primary: linear-gradient(135deg, #0066FF 0%, #00D4AA 100%);

}*/

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

html {
    scroll-behavior: smooth;
}

body {
    direction: rtl;
    text-align: right;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--light-bg);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-normal);
}

    a:hover {
/*        color: var(--primary-dark);
*/
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #e2e8f0;
    transition: all var(--transition-normal);
}

    .header.scrolled {
        background: rgba(255, 255, 255, 0.98);
        box-shadow: var(--shadow-md);
    }

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    padding: 0 var(--spacing-md);
    gap: var(--spacing-md);
}

.logo {
    flex-shrink: 0;
}

    .logo img {
        height: 45px;
        width: auto;
        transition: transform var(--transition-normal);
    }

    .logo:hover img {
        transform: scale(1.05);
    }

.nav {
    display: flex;
    align-items: center;
    flex: 1;
    justify-content: center;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
    margin: 0;
}

.nav-item {
    margin: 0;
}

.nav-link {
    display: block;
    padding: 12px 16px;
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-primary);
    position: relative;
    white-space: nowrap;
}

    .nav-link::after {
        content: '';
        position: absolute;
        bottom: 0;
        right: 50%;
        width: 0;
        height: 2px;
        background: var(--primary-color);
        transition: all var(--transition-normal);
    }

    .nav-link:hover::after,
    .nav-link.active::after {
        width: 100%;
        right: 0;
    }

.lang-switcher {
    display: flex;
    gap: 4px;
    padding: 6px;
    background: var(--light-surface);
    border-radius: 10px;
    flex-shrink: 0;
}

.lang-btn {
    padding: 8px 14px;
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    border-radius: 8px;
    transition: all var(--transition-normal);
    min-width: 40px;
}

    .lang-btn:hover {
        background: rgba(0, 102, 204, 0.1);
        color: var(--primary-color);
    }

    .lang-btn.active {
        background: white;
        color: var(--primary-color);
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    }

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: transparent;
    border: none;
    cursor: pointer;
}

    .menu-toggle span {
        display: block;
        width: 25px;
        height: 3px;
        background: var(--text-primary);
        border-radius: 2px;
        transition: all var(--transition-normal);
    }

/* Hero */
.hero {
    position: relative;
    padding: 140px 0 var(--spacing-3xl);
    background: var(--ai-gradient);
    overflow: hidden;
}

    .hero::before {
        content: '';
        position: absolute;
        top: 0;
        right: 0;
        bottom: 0;
        left: 0;
        background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="20" height="20" patternUnits="userSpaceOnUse"><path d="M 20 0 L 0 0 0 20" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
        opacity: 0.3;
    }

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    color: white;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

.hero h1 {
    color: white;
    margin-bottom: var(--spacing-md);
}

.hero p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xl);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 32px;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

    .btn-primary:hover {
        background: var(--primary-dark);
        transform: translateY(-2px);
        box-shadow: var(--shadow-lg);
    }

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid white;
}

    .btn-outline:hover {
        background: white;
        color: var(--primary-color);
        transform: translateY(-2px);
        box-shadow: var(--shadow-lg);
    }

.btn-group {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* Section */
.section {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
/*    max-width: 800px;
*/    margin-right: auto;
    margin-left: auto;
}

.section-badge {
    display: inline-block;
    padding: 8px 20px;
    background: var(--ai-gradient);
    color: white;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 20px;
    margin-bottom: var(--spacing-md);
}

/* Stats */
.stats {
    background: var(--dark-bg);
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-xl);
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    background: var(--ai-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 12px;
}

.stat-label {
    color: #94a3b8;
    font-size: 1.125rem;
}

/* Services */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.service-card {
    padding: var(--spacing-xl);
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-xl);
    transition: all var(--transition-normal);
}

    .service-card:hover {
        transform: translateY(-8px);
        box-shadow: var(--shadow-xl);
        border-color: var(--primary-color);
    }

.service-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--ai-gradient);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
    color: white;
}

.service-features {
    list-style: none;
    margin-bottom: var(--spacing-md);
}

    .service-features li {
        padding: 8px 0;
        color: var(--text-secondary);
        display: flex;
        gap: 12px;
        align-items: flex-start;
    }

        .service-features li::before {
            content: '✓';
            color: #00cc99;
            font-weight: bold;
        }

/* Technologies */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.tech-category {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid #e2e8f0;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

    .tech-category::before {
        content: '';
        position: absolute;
        top: 0;
        right: 0;
        width: 4px;
        height: 0;
        background: var(--ai-gradient);
        transition: height var(--transition-normal);
    }

    .tech-category:hover {
        border-color: var(--primary-color);
        box-shadow: var(--shadow-lg);
        transform: translateY(-4px);
    }

        .tech-category:hover::before {
            height: 100%;
        }

    .tech-category h4 {
        direction:ltr;
        color: var(--text-primary);
        margin-bottom: var(--spacing-md);
        padding-bottom: var(--spacing-sm);
        border-bottom: 2px solid var(--primary-color);
        font-size: 1.125rem;
        font-weight: 700;
        display: flex;
        align-items: center;
        gap: 8px;
    }

.tech-list {
    direction:ltr;
    text-align:left;

    list-style: none;
    margin: 0;
    padding: 0;
}

    .tech-list li {
        padding: 10px 0;
        color: var(--text-secondary);
        display: flex;
        align-items: flex-start;
        gap: 12px;
        font-size: 0.95rem;
        line-height: 1.6;
        transition: color var(--transition-normal);
    }

        .tech-list li:hover {
            color: var(--text-primary);
        }

        .tech-list li::before {
            content: '●';
            color: var(--primary-color);
            font-weight: bold;
            font-size: 1rem;
            flex-shrink: 0;
/*            margin-top: 4px;
*/        }


/* FAQ */
.faq-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--light-border);
    overflow: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    margin-bottom: 10px;
}

    .faq-item:hover {
        box-shadow: var(--shadow-md);
    }

.faq-question {
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    user-select: none;
    background: transparent;
    transition: background-color var(--transition-normal);
}

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

    .faq-question h3 {
        margin: 0;
        font-size: 1.125rem;
        color: var(--text-primary);
        flex: 1;
    }

.faq-icon {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: bold;
    margin-left: 1rem;
    transition: transform var(--transition-normal);
    flex-shrink: 0;
    line-height: 1;
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out;
}

.faq-item.active .faq-answer {
    max-height: 1000px;
    transition: max-height 0.6s ease-in;
}

.faq-answer p {
    padding: 0 1.5rem 1.5rem 1.5rem;
    margin: 0;
    line-height: 1.8;
    color: var(--text-secondary);
}

/* Simple Clients Carousel Styles */

.clients-section {
    background: var(--light-surface);
    padding-bottom: var(--spacing-3xl);
}

.clients-carousel {
    overflow: hidden;
    width: 100%;
    direction: ltr; /* 🔴 ВАЖНО */
    position: relative;
}

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

.clients-track {
    display: flex;
/*    gap: 64px;
*/    
    width: max-content;
    align-items: center;
    animation: scroll-clients 200s linear infinite;
}


.client-logo {
    width: 250px;
    height: 150px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

    .client-logo img {
        max-width: 100%;
        max-height: 100%;
        filter: grayscale(100%);
        opacity: 0.55;
        transition: all .4s ease;
    }

        .client-logo img:hover {
            filter: grayscale(0);
            opacity: 1;
            transform: scale(1.05);
        }

@keyframes scroll-clients {
    from {
        transform: translateX(0);
    }

    to {
        transform: translateX(-50%);
    }
}

@media (max-width: 768px) {
    .clients-track {
        gap: 40px;
        animation-duration: 100s;
    }

    .client-logo {
        width: 110px;
        height: 55px;
    }
}



/* Footer */
.footer {
    background: var(--dark-bg);
    color: #f1f5f9;
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    justify-items: center;
}

.footer-section h4 {
    color: white;
    margin-bottom: var(--spacing-md);
}

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

    .footer-links li {
        margin-bottom: 12px;
    }

    .footer-links a {
        color: #94a3b8;
        transition: color var(--transition-normal);
    }

        .footer-links a:hover {
            color: white;
        }

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid #334155;
    text-align: center;
    color: #94a3b8;
}

    .footer-bottom a {
        color: #94a3b8;
        transition: color var(--transition-normal);
    }

        .footer-bottom a:hover {
            color: white;
        }


/* Form */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-input, .form-textarea {
    width: 100%;
    padding: 16px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: all var(--transition-normal);
}

    .form-input:focus, .form-textarea:focus {
        outline: none;
        border-color: var(--primary-color);
        box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
    }

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        height: 70px;
        gap: var(--spacing-sm);
        justify-content: center;
    }

    .logo
    {
        order: 2;
    }

    .logo img {
        height: 40px;
    }

    .nav {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: white;
        justify-content: flex-start;
        transition: right var(--transition-normal);
        z-index: 999;
        padding: var(--spacing-lg);
        overflow-y: auto;
    }

        .nav.active {
            right: 0;
            box-shadow: var(--shadow-lg);
        }

    .nav-menu {
        flex-direction: column;
        gap: 0;
        width: 100%;
    }

    .nav-link {
        padding: var(--spacing-md);
        border-bottom: 1px solid var(--light-border);
        font-size: 1.125rem;
    }

        .nav-link::after {
            display: none;
        }

    .lang-switcher {
        margin: 0;
        order: 2;
    }

    .menu-toggle {
        display: flex;
        order: 1;
        z-index: 1001;
    }

    .hero {
        padding: 120px 0 var(--spacing-2xl);
    }

    .stats-grid, .services-grid {
        grid-template-columns: 1fr;
    }

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

    .btn-group {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .clients-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 480px) {
    .clients-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .tech-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .tech-category {
        padding: var(--spacing-lg);
    }

        .tech-category h4 {
            font-size: 1rem;
        }

    .tech-list li {
        font-size: 0.875rem;
        padding: 8px 0;
    }
}

@media (min-width: 481px) and (max-width: 768px) {
    .tech-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/*@media (min-width: 1025px) {
    .tech-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}
*/
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
}





/* Countries line */
.country-line {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 18px;
    margin-top: 1rem;
    align-items: center;
}

/* Single country */
.country {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: var(--light-surface);
    border-radius: 999px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1;
    white-space: nowrap;
    transition: all 250ms ease;
}

    .country:hover {
        background: white;
        color: var(--text-primary);
        box-shadow: var(--shadow-md);
    }

    /* Flag SVG */
    .country .flag {
        width: 22px;
        height: 14px;
        display: block;
        border-radius: 2px;
        box-shadow: inset 0 0 0 1px rgba(0,0,0,0.08);
        flex-shrink: 0;
    }



/* Countries Grid – Premium */
.countries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-top: var(--spacing-xl);
}

.country-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: var(--light-surface);
    border-radius: 14px;
    border: 1px solid #e2e8f0;
    transition: all 300ms ease;
}

    .country-card:hover {
        background: white;
        box-shadow: var(--shadow-lg);
        transform: translateY(-2px);
    }

    .country-card .flag {
        width: 26px;
        height: 18px;
        border-radius: 3px;
        flex-shrink: 0;
        box-shadow: inset 0 0 0 1px rgba(0,0,0,0.1);
    }

    .country-card strong {
        display: block;
        font-size: 0.95rem;
        color: var(--text-primary);
    }

    .country-card span {
        display: block;
        font-size: 0.75rem;
        color: var(--text-secondary);
    }

@media (max-width: 768px) {
    .country {
        font-size: 0.8125rem;
        padding: 5px 10px;
    }

        .country .flag {
            width: 18px;
            height: 12px;
        }

    .countries-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }
}

.service-card {
    display: flex;
    flex-direction: column;
}

    .service-card .btn {
        margin-top: auto;
        align-self: flex-end; /* слева */
    }