:root{
            --primary-blue:#0A3D62;
            --secondary-yellow:#FFC107;
            --white:#fff;
            --light-gray:#f4f4f4;
            --dark-gray:#333;

            /* динамічні змінні */
            --header-h:0px;      /* виставляємо з JS */
            --cta-height:0px;    /* реальна висота мобільної CTA (з JS) */
        }

        *{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth;overflow-x:hidden}
        body{
            font-family:'Montserrat',sans-serif;
            line-height:1.6;color:var(--dark-gray);background:var(--white);
            overflow-x:hidden;
            padding-top:var(--header-h); /* під фіксований хедер */
        }

        /* щоб якорні секції не ховались під фіксованим хедером */
        :where(section,[id]){scroll-margin-top:calc(var(--header-h) + 10px)}

        a{text-decoration:none;color:var(--primary-blue)}
        .container{max-width:1200px;margin:0 auto;padding:0 15px}

        .btn{
            display:inline-block;padding:12px 25px;background:var(--secondary-yellow);
            color:var(--primary-blue);font-weight:700;border-radius:5px;border:none;cursor:pointer;
            transition:background-color .3s ease, transform .3s ease;text-transform:uppercase;
        }
        .btn:hover{background:#ffda6a;transform:translateY(-2px)}

        .section-title{
            text-align:center;font-size:2.5em;margin-bottom:40px;position:relative;padding-bottom:10px
        }
        .section-title::after{
            content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);
            width:80px;height:4px;background:var(--secondary-yellow);border-radius:2px
        }
        .pricing{padding:60px 0}

        /* === Фіксований хедер === */
        header{
            background:var(--primary-blue);color:var(--white);
            padding:15px 0;
            position:fixed;left:0;right:0;top:0; 
            z-index:1000;
            box-shadow:0 2px 10px rgba(0,0,0,.1);
        }
        .header-desktop{display:flex;justify-content:space-between;align-items:center}
        .header-mobile{display:none}
        .header-mobile .top-row{display:flex;justify-content:space-between;align-items:center}
        .logo{display:flex;align-items:center}
        .logo img{height:40px}
        .logo-text{font-size:1.5em;font-weight:700;color:var(--white);margin-left:10px}
        .header-desktop .header-info{display:flex;align-items:center;gap:20px}
        .header-info span{display:block;font-weight:500;white-space:nowrap}
        .phone-numbers a{color:var(--white);font-weight:600;transition:color .3s ease}
        .phone-numbers a:hover{color:var(--secondary-yellow)}

        /* Hero */
        .hero{
            position:relative;height:80vh;display:flex;align-items:center;text-align:center;color:var(--white);
            background:url('img/1.jpg') no-repeat center/cover;padding:20px 0;
        }
        .hero::before{content:'';position:absolute;inset:0;background:rgba(0,0,0,.6)}
        .hero-content{position:relative;z-index:2;max-width:800px;margin:0 auto}
        .hero h1{font-size:3.5em;font-weight:700;margin-bottom:20px;line-height:1.2}
        .hero p{font-size:1.5em;margin-bottom:30px}

        /* fade-in */
        .fade-in{opacity:0;transform:translateY(20px);transition:opacity .6s ease-out, transform .6s ease-out}
        .fade-in.is-visible{opacity:1;transform:translateY(0)}

        /* Sections */
        .services,.why-us,.faq,.contacts{padding:80px 0}
        .services-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:30px;text-align:center}
        .service-item{
            background:var(--light-gray);padding:30px;border-radius:10px;box-shadow:0 4px 15px rgba(0,0,0,.05);
            transition:transform .3s ease, box-shadow .3s ease
        }
        .service-item i{font-size:3.5em;color:var(--primary-blue)}
        .service-item:hover{transform:translateY(-5px);box-shadow:0 6px 20px rgba(0,0,0,.1)}
        .service-item h3{margin-top:15px;font-size:1.2em}

        .why-us{background:var(--primary-blue);color:var(--white)}
        .why-us .section-title{color:var(--white)}
        .why-us .section-title::after{background:var(--secondary-yellow)}
        .why-us-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:30px;text-align:center}
        .why-us-item{
            background:rgba(255,255,255,.1);padding:30px;border-radius:10px;border:1px solid rgba(255,255,255,.2);
            transition:transform .3s ease
        }
        .why-us-item:hover{transform:scale(1.05)}
        .why-us-item i{font-size:3.5em;color:var(--secondary-yellow)}

        .cta-block{background:var(--secondary-yellow);padding:60px 0;text-align:center}
        .cta-block h2{font-size:2.5em;color:var(--primary-blue);margin-bottom:20px}
        .cta-form{max-width:600px;margin:0 auto;display:grid;gap:20px}
        .cta-form input,.cta-form button{width:100%;padding:12px;border-radius:5px;border:none;font-family:inherit}
        .cta-form input{border:1px solid #ddd}
        .cta-form button{background:var(--primary-blue);color:#fff;font-weight:700;font-size:1.1em;cursor:pointer;transition:background .3s ease}
        .cta-form button:hover{background:#05263d}

        .pricing table{
            width:100%;border-collapse:collapse;margin-top:20px;background:var(--light-gray);
            border-radius:10px;overflow:hidden;box-shadow:0 4px 15px rgba(0,0,0,.05)
        }
        .pricing th,.pricing td{padding:15px;text-align:left;border-bottom:1px solid #ddd}
        .pricing th{background:var(--primary-blue);color:#fff;font-weight:600}
        .pricing tr:last-child td{border-bottom:none}
        .pricing tr:nth-child(even){background:#f9f9f9}

        .reviews{background:var(--light-gray);padding:80px 0}
        .review-card{background:#fff;padding:30px;border-radius:10px;box-shadow:0 4px 15px rgba(0,0,0,.05);margin:0 15px}
        .review-card p{font-style:italic;margin-bottom:10px}
        .review-card .author{font-weight:600;text-align:right;color:var(--primary-blue)}

        .faq .accordion-item{background:var(--light-gray);margin-bottom:10px;border-radius:5px;overflow:hidden}
        .faq .accordion-header{
            padding:15px;cursor:pointer;position:relative;font-weight:600;background:#f0f0f0;display:block
        }
        .faq .accordion-header::after{
            content:'+';position:absolute;right:15px;top:50%;transform:translateY(-50%);transition:transform .3s ease
        }
        .faq .accordion-item.active .accordion-header::after{transform:translateY(-50%) rotate(45deg)}
        .faq .accordion-content{padding:0 15px;max-height:0;overflow:hidden;transition:max-height .3s ease}
        .faq .accordion-item.active .accordion-content{padding:15px;max-height:200px}

        .contacts .contacts-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:30px}
        .contacts-info{background:var(--light-gray);padding:30px;border-radius:10px;box-shadow:0 4px 15px rgba(0,0,0,.05)}
        .contacts-info h3 {
            margin-bottom: 15px;
        }
        
        .contacts-info p {
            margin-bottom: 10px;
        }
        
        .contacts-info i {
            color: var(--secondary-yellow);
            margin-right: 10px;
        }
        
        .contacts-info a {
            font-weight: 600;
        }
        .map-container{height:400px;border-radius:10px;overflow:hidden;box-shadow:0 4px 15px rgba(0,0,0,.05)}
        .map-container iframe{width:100%;height:100%;border:0}

        footer{background:var(--dark-gray);color:#fff;padding:40px 0;text-align:center}
        .footer-content{display:flex;flex-direction:column;gap:20px}
        .footer-links ul{list-style:none;padding:0;margin:0;display:flex;gap:20px;justify-content:center}
        .footer-links a{color:var(--light-gray);transition:color .3s ease}
        .footer-links a:hover{color:var(--secondary-yellow)}
        .footer-bottom{
            margin-top:20px;border-top:1px solid rgba(255,255,255,.1);padding-top:20px;padding-bottom:80px;
            display:flex;justify-content:center;align-items:center;flex-wrap:wrap
        }
        .footer-bottom span,.footer-bottom a{color:var(--light-gray);margin:0 5px;white-space:nowrap}

        /* === Go to Top: завжди у потоці, керуємо прозорістю === */
        #goToTopBtn{
            position:fixed;bottom:20px;right:20px;width:50px;height:50px;
            background:var(--primary-blue);color:#fff;border-radius:50%;
            display:flex;justify-content:center;align-items:center;font-size:24px;
            box-shadow:0 4px 10px rgba(0,0,0,.2);cursor:pointer;z-index:1100;
            opacity:0;visibility:hidden;
            transition:opacity .25s ease, visibility .25s ease, bottom .25s ease, right .25s ease, transform .25s ease;
        }
        #goToTopBtn.show{opacity:1;visibility:visible}
        #goToTopBtn:hover{opacity:.85;transform:translateY(-3px)}

        /* Плаваючі месенджери */
        .floating-buttons{
            position:fixed;bottom:90px;right:20px;display:flex;flex-direction:column;gap:15px;
            z-index:1099;transition:bottom .25s ease, right .25s ease;
        }
        .floating-buttons a{
            width:50px;height:50px;border-radius:50%;display:flex;justify-content:center;align-items:center;
            color:#fff;background:var(--primary-blue);box-shadow:0 4px 10px rgba(0,0,0,.2);
            transition:transform .3s ease, background-color .3s ease;
        }
        .floating-buttons a:hover{transform:scale(1.1)}
        .floating-buttons a.telegram{background:#0088cc}
        .floating-buttons a.whatsapp{background:#25D366}
        .floating-buttons a.viber{background:#665CAC}
        .floating-buttons a i{font-size:24px}

        /* Desktop */
        @media (min-width:769px){
            .header-mobile{display:none}
            #mobile-cta{display:none !important}
        }

        /* Mobile */
        @media (max-width:768px){
            .header-desktop{display:none}
            .header-mobile{display:block}
            .header-mobile .logo-text{display:none}

            .phone-dropdown{position:relative;display:inline-block}
            .phone-dropdown-toggle{background:none;border:none;color:#fff;font-size:24px;cursor:pointer}
            .phone-dropdown-menu{
                display:none;position:absolute;top:100%;right:0;background:var(--primary-blue);
                min-width:160px;box-shadow:0 8px 16px rgba(0,0,0,.2);z-index:1;border-radius:5px;padding:10px;text-align:center;white-space:nowrap
            }
            .phone-dropdown-menu a{color:#fff;padding:8px 0;display:block}
            .phone-dropdown-menu a:hover{background:#0d4d8c}
            .phone-dropdown.active .phone-dropdown-menu{display:block}

            /* Фіксована мобільна CTA */
            #mobile-cta{
                display:none;position:fixed;bottom:0;left:50%;transform:translateX(-50%);
                width:calc(100% - 30px);max-width:400px;background:var(--secondary-yellow);color:var(--primary-blue);
                text-align:center;padding:15px;font-size:1.2em;font-weight:700;z-index:1001;
                box-shadow:0 -2px 10px rgba(0,0,0,.1);border-top-left-radius:10px;border-top-right-radius:10px;
                text-decoration:none;opacity:0;transition:opacity .3s ease;
            }
            #mobile-cta.is-visible{display:block;opacity:1}

            .main-content{padding-bottom:80px}

            /* Базові позиції */
            .floating-buttons{bottom:20px;right:20px}
            #goToTopBtn{bottom:20px;right:85px} /* зсув лівіше, щоб не налазити на Viber */

            /* Коли CTA видима — підняти на реальну висоту CTA */
            body.cta-up .floating-buttons{bottom:calc(20px + var(--cta-height))}
            body.cta-up #goToTopBtn{bottom:calc(20px + var(--cta-height))}
        }