:root {
    --bg: #070b12; --bg-2: #0a111c; --card: #0e1622;
    --cyan: #00e5ff; --blue: #38bdf8;
    --text: #e8f1fa; --muted: #93a4b8;
    --line: rgba(0,229,255,0.15); --border: #16283c;
    --transition: all 0.3s ease;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; overflow-x: hidden; }
h1, h2, h3 { font-family: 'Orbitron', sans-serif; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
::selection { background: rgba(0,229,255,0.3); }
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: #060a10; }
::-webkit-scrollbar-thumb { background: #123047; border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--cyan); }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Buttons */
.btn { display: inline-block; padding: 12px 28px; border-radius: 6px; font-weight: 700; transition: var(--transition); cursor: pointer; border: none; font-size: 1rem; letter-spacing: 0.5px; }
.btn-primary { background: linear-gradient(90deg, var(--cyan), var(--blue)); color: #041018; }
.btn-primary:hover { box-shadow: 0 0 25px rgba(0,229,255,0.5); transform: translateY(-2px); }
.btn-secondary { background: transparent; color: var(--cyan); border: 2px solid var(--cyan); }
.btn-secondary:hover { background: var(--cyan); color: #041018; box-shadow: 0 0 25px rgba(0,229,255,0.4); }
.btn-call { background: linear-gradient(90deg, var(--cyan), var(--blue)); color: #041018; padding: 8px 16px; border-radius: 6px; font-weight: 700; display: flex; align-items: center; gap: 8px; transition: var(--transition); }
.btn-call:hover { box-shadow: 0 0 20px rgba(0,229,255,0.5); }

/* Header + Logo (с резервом, если картинки нет) */
.header { position: sticky; top: 0; background: rgba(5,9,15,0.9); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); z-index: 1000; padding: 12px 0; }
.nav-container { display: flex; justify-content: space-between; align-items: center; }
.logo { display: flex; align-items: center; }
.logo img { height: 52px; width: auto; display: block; filter: drop-shadow(0 0 10px rgba(0,229,255,0.35)); }
.logo img.img-missing { display: none; }
.logo-fallback { display: none; font-family: 'Orbitron', sans-serif; font-weight: 900; font-size: 1.5rem; letter-spacing: 2px; color: var(--text); text-shadow: 0 0 14px rgba(0,229,255,0.6); }
.logo-fallback .accent { color: var(--cyan); }
.logo img.img-missing + .logo-fallback { display: inline-block; }
.nav-menu ul { display: flex; gap: 30px; }
.nav-menu a { font-weight: 500; color: var(--text); transition: var(--transition); }
.nav-menu a:hover { color: var(--cyan); text-shadow: 0 0 12px rgba(0,229,255,0.6); }
.nav-actions { display: flex; align-items: center; gap: 15px; }
.burger { display: none; background: none; border: none; font-size: 1.5rem; cursor: pointer; color: var(--cyan); }

/* Language Switcher */
.lang-switch { display: flex; gap: 4px; background: rgba(0,229,255,0.06); border: 1px solid var(--line); border-radius: 6px; padding: 3px; }
.lang-switch button { background: transparent; border: none; color: var(--muted); font-weight: 700; font-size: 0.75rem; padding: 5px 9px; cursor: pointer; border-radius: 4px; transition: var(--transition); letter-spacing: 0.5px; font-family: 'Inter', sans-serif; }
.lang-switch button:hover { color: var(--cyan); }
.lang-switch button.active { background: linear-gradient(90deg, var(--cyan), var(--blue)); color: #041018; box-shadow: 0 0 12px rgba(0,229,255,0.4); }

/* Hero: баннер + резервная кибер-сетка, если banner.jpg нет */
.hero { padding: 170px 0 130px; position: relative; background: linear-gradient(to right, rgba(4,8,14,0.94) 0%, rgba(4,8,14,0.8) 45%, rgba(4,8,14,0.35) 100%), url('banner.jpg') center/cover no-repeat #070b12; }
.hero::before { content: ''; position: absolute; inset: 0; background-image: linear-gradient(rgba(0,229,255,0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(0,229,255,0.05) 1px, transparent 1px); background-size: 40px 40px; pointer-events: none; }
.hero::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent, var(--cyan), transparent); }
.hero-content { max-width: 720px; position: relative; z-index: 1; }
.hero-badge { background: rgba(0,229,255,0.08); border: 1px solid var(--line); color: var(--cyan); padding: 6px 16px; border-radius: 20px; font-size: 0.9rem; font-weight: 600; display: inline-flex; align-items: center; gap: 8px; margin-bottom: 20px; }
.hero h1 { font-size: 3.4rem; font-weight: 700; line-height: 1.2; margin-bottom: 20px; color: var(--text); }
.hero h1 .highlight { background: linear-gradient(90deg, var(--cyan), var(--blue)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero p { font-size: 1.2rem; color: var(--muted); margin-bottom: 30px; }
.hero-buttons { display: flex; gap: 15px; margin-bottom: 40px; }
.hero-stats { display: flex; gap: 30px; border-top: 1px solid rgba(255,255,255,0.12); padding-top: 20px; }
.stat { display: flex; align-items: center; gap: 10px; font-weight: 600; }
.stat i { color: var(--cyan); font-size: 1.2rem; }

/* Sections */
section { padding: 90px 0; }
.section-header { text-align: center; max-width: 650px; margin: 0 auto 60px; }
.sub-title { color: var(--cyan); font-weight: 700; text-transform: uppercase; letter-spacing: 3px; font-size: 0.85rem; margin-bottom: 10px; display: block; }
.section-header h2 { font-size: 2.4rem; font-weight: 700; margin-bottom: 15px; }
.section-header p { color: var(--muted); font-size: 1.1rem; }

/* Services */
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; }
.service-card { background: var(--card); padding: 40px 30px; border-radius: 12px; border: 1px solid var(--border); transition: var(--transition); }
.service-card:hover { transform: translateY(-10px); border-color: var(--cyan); box-shadow: 0 0 30px rgba(0,229,255,0.15); }
.service-card .icon { width: 60px; height: 60px; background: rgba(0,229,255,0.08); color: var(--cyan); display: flex; align-items: center; justify-content: center; border-radius: 12px; font-size: 1.8rem; margin-bottom: 20px; transition: var(--transition); border: 1px solid var(--line); }
.service-card:hover .icon { background: linear-gradient(135deg, var(--cyan), var(--blue)); color: #041018; box-shadow: 0 0 20px rgba(0,229,255,0.5); }
.service-card h3 { font-size: 1.25rem; margin-bottom: 15px; }
.service-card p { color: var(--muted); }

/* Why Us */
.why-us { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.why-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 40px; }
.why-item { text-align: center; }
.why-item .number { font-family: 'Orbitron', sans-serif; font-size: 4rem; font-weight: 900; color: var(--cyan); opacity: 0.35; text-shadow: 0 0 25px rgba(0,229,255,0.6); line-height: 1; margin-bottom: 15px; }
.why-item h3 { font-size: 1.3rem; margin-bottom: 15px; }
.why-item p { color: var(--muted); }

/* Projects */
.projects-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.project-card { position: relative; height: 300px; border-radius: 12px; overflow: hidden; border: 1px solid var(--border); cursor: pointer; }
.project-image { width: 100%; height: 100%; background-size: cover; background-position: center; transition: transform 0.5s ease; background-color: #0a121d; }
.project-card:hover .project-image { transform: scale(1.1); }
.project-info { position: absolute; bottom: 0; left: 0; right: 0; background: linear-gradient(to top, rgba(0,0,0,0.9), transparent); padding: 30px 20px 20px; transform: translateY(100%); transition: transform 0.3s ease; }
.project-card:hover .project-info { transform: translateY(0); }
.project-info span { color: var(--cyan); font-weight: 600; font-size: 0.9rem; text-transform: uppercase; letter-spacing: 1px; }
.project-info h3 { font-size: 1.2rem; }
.img-1 { background-image: url('https://images.unsplash.com/photo-1544197150-b99a560bb754?auto=format&fit=crop&w=800&q=80'); }
.img-2 { background-image: url('https://images.unsplash.com/photo-1544197150-b99a560bb754?auto=format&fit=crop&w=800&q=80'); }
.img-3 { background-image: url('https://images.unsplash.com/photo-1557597774-9d266d13359c?auto=format&fit=crop&w=800&q=80'); }
.img-4 { background-image: url('https://images.unsplash.com/photo-1558618666-fcd25c85cd64?auto=format&fit=crop&w=800&q=80'); }

/* Testimonials */
.testimonials { background: var(--bg-2); }
.testimonials-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; }
.testimonial-card { background: rgba(0,229,255,0.04); padding: 30px; border-radius: 12px; border: 1px solid var(--line); transition: var(--transition); }
.testimonial-card:hover { border-color: var(--cyan); box-shadow: 0 0 25px rgba(0,229,255,0.12); }
.stars { color: #ffd700; margin-bottom: 15px; font-size: 1.2rem; }
.testimonial-card p { font-style: italic; margin-bottom: 20px; font-size: 1.05rem; }
.testimonial-card h4 { font-weight: 600; color: var(--cyan); }

/* FAQ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { background: var(--card); border-radius: 10px; margin-bottom: 15px; border: 1px solid var(--border); overflow: hidden; }
.faq-question { padding: 20px 30px; font-weight: 600; display: flex; justify-content: space-between; align-items: center; cursor: pointer; transition: var(--transition); gap: 15px; }
.faq-question:hover { background: rgba(0,229,255,0.05); color: var(--cyan); }
.faq-question i { transition: transform 0.3s ease; color: var(--cyan); flex-shrink: 0; }
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; padding: 0 30px; color: var(--muted); }
.faq-item.active .faq-answer { max-height: 300px; padding: 0 30px 20px; }

/* Contact */
.contact-container { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.contact-info h2 { font-size: 2.4rem; margin-bottom: 20px; }
.contact-info p { color: var(--muted); margin-bottom: 30px; font-size: 1.1rem; }
.contact-details li { display: flex; align-items: center; gap: 15px; margin-bottom: 20px; font-size: 1.1rem; font-weight: 500; }
.contact-details a:hover { color: var(--cyan); }
.contact-details i { width: 42px; height: 42px; background: rgba(0,229,255,0.08); color: var(--cyan); display: flex; align-items: center; justify-content: center; border-radius: 50%; font-size: 1.1rem; border: 1px solid var(--line); flex-shrink: 0; }
.contact-form { background: var(--card); padding: 40px; border-radius: 14px; border: 1px solid var(--border); box-shadow: 0 10px 40px rgba(0,0,0,0.4); }
.contact-form h3 { font-size: 1.6rem; margin-bottom: 25px; color: var(--cyan); }
.contact-form input, .contact-form select, .contact-form textarea { width: 100%; padding: 12px 15px; background: #0a121d; border: 1px solid #1c2c3f; border-radius: 8px; margin-bottom: 15px; font-family: inherit; font-size: 1rem; color: var(--text); transition: var(--transition); }
.contact-form select option { background: #0a121d; }
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { outline: none; border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(0,229,255,0.15); }

/* Footer */
.footer { background: #04070c; padding: 60px 0 0; border-top: 1px solid var(--line); }
.footer-container { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .logo img { height: 46px; }
.footer-brand .logo-fallback { font-size: 1.3rem; }
.footer-brand p { color: var(--muted); margin-top: 15px; max-width: 300px; }
.footer-links h4, .footer-social h4 { margin-bottom: 20px; font-size: 1.1rem; }
.footer-links ul li { margin-bottom: 10px; }
.footer-links a { color: var(--muted); transition: var(--transition); }
.footer-links a:hover { color: var(--cyan); }
.social-icons { display: flex; gap: 15px; }
.social-icons a { width: 40px; height: 40px; background: rgba(0,229,255,0.08); border: 1px solid var(--line); display: flex; align-items: center; justify-content: center; border-radius: 50%; transition: var(--transition); }
.social-icons a:hover { background: var(--cyan); color: #041018; box-shadow: 0 0 20px rgba(0,229,255,0.5); transform: translateY(-3px); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 20px 0; text-align: center; color: var(--muted); }

/* Animations */
.fade-in { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* Responsive */
@media (max-width: 992px) {
    .contact-container { grid-template-columns: 1fr; }
    .footer-container { grid-template-columns: 1fr 1fr; }
    .hero h1 { font-size: 2.8rem; }
}
@media (max-width: 768px) {
    .nav-menu { position: fixed; top: 76px; left: -100%; width: 100%; height: calc(100vh - 76px); background: #070b12; flex-direction: column; align-items: center; padding-top: 50px; transition: left 0.3s ease; }
    .nav-menu.active { left: 0; }
    .nav-menu ul { flex-direction: column; gap: 25px; text-align: center; }
    .burger { display: block; }
    .btn-call span { display: none; }
    .nav-actions { gap: 10px; }
    .lang-switch button { padding: 4px 6px; font-size: 0.7rem; }
    .logo img { height: 42px; }
    .logo-fallback { font-size: 1.2rem; }
    .hero { padding: 120px 0 90px; }
    .hero h1 { font-size: 2.1rem; }
    .hero-stats { flex-direction: column; gap: 15px; }
    .hero-buttons { flex-direction: column; }
    .footer-container { grid-template-columns: 1fr; text-align: center; }
    .social-icons { justify-content: center; }
    .footer-brand p { max-width: 100%; }
    .footer-brand .logo { justify-content: center; }
}