/* ===== RESET & BASE ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
    font-family:'Inter','Segoe UI',system-ui,-apple-system,sans-serif;
    background:#ffffff;
    color:#1a2332;
    line-height:1.6;
    overflow-x:hidden;
    -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;transition:color .25s ease}
img{max-width:100%;display:block}
ul{list-style:none}

:root{
    --bg:#ffffff;
    --bg-2:#f5f7fa;
    --bg-3:#eaeff5;
    --text:#1a2332;
    --text-2:#3a4a５ｅ;
    --muted:#6b7a90;
    --accent:#1e3a5f;       /* deep navy */
    --accent-2:#2c5282;     /* medium blue */
    --accent-light:#e8eff7;
    --border:#e2e8ef;
    --radius:14px;
    --max:1240px;
    --shadow-sm:0 2px 8px rgba(30,58,95,.06);
    --shadow-md:0 8px 24px rgba(30,58,95,.08);
    --shadow-lg:0 16px 40px rgba(30,58,95,.12);
}

.container{max-width:var(--max);margin:0 auto;padding:0 24px}

/* ===== HEADER ===== */
.header{
    position:fixed;top:0;left:0;right:0;z-index:100;
    background:rgba(255,255,255,.85);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--border);
    transition:all .3s ease;
}
.header.scrolled{
    background:rgba(255,255,255,.98);
    box-shadow:var(--shadow-sm);
}
.header-inner{
    display:flex;align-items:center;justify-content:space-between;
    height:78px;gap:24px;
}
.logo{
    display:flex;align-items:center;gap:12px;
    font-weight:700;font-size:18px;letter-spacing:.12em;
    color:var(--text);
}
.logo-mark{
    width:40px;height:40px;border-radius:10px;
    background:linear-gradient(135deg,var(--accent) 0%,var(--accent-2) 100%);
    display:grid;place-items:center;color:#fff;font-weight:900;font-size:18px;
    box-shadow:0 6px 18px rgba(30,58,95,.25);
}
.logo span{color:var(--accent)}

.nav ul{display:flex;gap:36px}
.nav a{
    font-size:15px;color:var(--text);
    position:relative;padding:6px 0;font-weight:500;
}
.nav a::after{
    content:"";position:absolute;left:0;bottom:0;
    width:0;height:2px;background:var(--accent);
    transition:width .3s ease;
}
.nav a:hover{color:var(--accent)}
.nav a:hover::after{width:100%}
.nav a.active{color:var(--accent)}
.nav a.active::after{width:100%}

.btn{
    display:inline-flex;align-items:center;justify-content:center;
    padding:13px 28px;border-radius:10px;font-weight:600;
    font-size:14px;letter-spacing:.04em;cursor:pointer;
    border:none;transition:all .25s ease;
    font-family:inherit;
}
.btn-primary{
    background:linear-gradient(135deg,var(--accent) 0%,var(--accent-2) 100%);
    color:#fff;
    box-shadow:0 6px 18px rgba(30,58,95,.2);
}
.btn-primary:hover{
    transform:translateY(-2px);
    box-shadow:0 12px 28px rgba(30,58,95,.3);
}
.btn-outline{
    background:transparent;color:var(--accent);
    border:1.5px solid var(--accent);
}
.btn-outline:hover{
    background:var(--accent);color:#fff;
}

/* burger */
.burger{
    display:none;width:40px;height:40px;
    background:transparent;border:1px solid var(--border);
    border-radius:8px;cursor:pointer;position:relative;
}
.burger span{
    position:absolute;left:10px;right:10px;height:2px;
    background:var(--text);transition:.3s;border-radius:2px;
}
.burger span:nth-child(1){top:13px}
.burger span:nth-child(2){top:19px}
.burger span:nth-child(3){top:25px}
.burger.active span:nth-child(1){top:19px;transform:rotate(45deg)}
.burger.active span:nth-child(2){opacity:0}
.burger.active span:nth-child(3){top:19px;transform:rotate(-45deg)}

/* ===== HERO ===== */
.hero{
    min-height:100vh;
    position:relative;
    display:flex;align-items:center;justify-content:center;
    text-align:center;
    background:
            linear-gradient(180deg,rgba(255,255,255,.75) 0%,rgba(245,247,250,.92) 100%),
            url('/img/hero-bg.jpg') center/cover no-repeat;
    overflow:hidden;
}
.hero::before{
    content:"";position:absolute;inset:0;
    background:
            radial-gradient(ellipse at 20% 30%,rgba(30,58,95,.08),transparent 50%),
            radial-gradient(ellipse at 80% 70%,rgba(44,82,130,.08),transparent 50%);
    pointer-events:none;
}
.hero-content{position:relative;z-index:2;max-width:900px;padding:0 24px}
.hero h1{
    font-size:clamp(48px,8vw,110px);
    font-weight:800;letter-spacing:.08em;
    background:linear-gradient(135deg,var(--accent) 0%,var(--accent-2) 100%);
    -webkit-background-clip:text;background-clip:text;
    -webkit-text-fill-color:transparent;
    margin-bottom:24px;line-height:1;
    animation:fadeUp 1s ease both;
}
.hero p{
    font-size:clamp(16px,1.6vw,20px);
    color:var(--muted);max-width:640px;margin:0 auto 36px;
    animation:fadeUp 1s .2s ease both;
}
.hero-cta{animation:fadeUp 1s .4s ease both}
.scroll-down{
    position:absolute;bottom:32px;left:50%;transform:translateX(-50%);
    color:var(--accent);font-size:12px;letter-spacing:.3em;font-weight:600;
    animation:bounce 2s infinite;
}
.scroll-down::after{
    content:"";display:block;width:1px;height:40px;
    background:var(--accent);margin:10px auto 0;
}
@keyframes fadeUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:none}}
@keyframes bounce{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(-10px)}}

/* ===== SECTION ===== */
.section{padding:120px 0;position:relative}
.section-title{
    font-size:clamp(28px,4vw,46px);
    font-weight:700;margin-bottom:24px;letter-spacing:.01em;
    color:var(--text);
}
.section-title span{color:var(--accent)}
.section-sub{
    color:var(--muted);font-size:16px;
    max-width:600px;margin-bottom:60px;
}
.section-head{margin-bottom:60px;text-align:center}
.section-head .section-sub{margin:0 auto}

/* ===== ABOUT ===== */
.about{background:var(--bg)}
.about-grid{
    display:grid;grid-template-columns:1.1fr 1fr;gap:80px;align-items:center;
}
.about-text p{
    font-size:17px;color:var(--text);margin-bottom:20px;
    line-height:1.8;
}
.about-text p:first-of-type{font-size:20px;color:var(--text)}
.about-features{
    display:grid;grid-template-columns:1fr 1fr;gap:20px;
    margin-top:36px;
}
.feature-card{
    background:var(--bg);border:1px solid var(--border);
    border-radius:var(--radius);padding:28px;
    transition:.3s;
    box-shadow:var(--shadow-sm);
}
.feature-card:hover{
    transform:translateY(-4px);
    border-color:var(--accent);
    box-shadow:var(--shadow-md);
}
.feature-card .icon{
    width:48px;height:48px;border-radius:12px;
    background:var(--accent-light);
    display:grid;place-items:center;margin-bottom:16px;
    color:var(--accent);font-size:22px;
}
.feature-card h4{font-size:16px;margin-bottom:8px;color:var(--text);font-weight:600}
.feature-card p{font-size:13px;color:var(--muted)}

.about-visual{
    position:relative;border-radius:20px;overflow:hidden;
    aspect-ratio:4/5;
    background:
            linear-gradient(180deg,rgba(30,58,95,.15),rgba(30,58,95,.45)),
            url('../img/about-bg.jpg') center/cover;
    box-shadow:var(--shadow-lg);
}
.about-visual::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(135deg,transparent 60%,rgba(30,58,95,.2));
}

/* ===== PARTNERS ===== */
.partners{background:var(--bg-2)}
.partners-grid{
    display:flex;flex-wrap:wrap;justify-content:center;
    gap:24px;
}
.partner{
    flex:1 1 200px;max-width:240px;
    height:120px;background:var(--bg);
    border:1px solid var(--border);border-radius:var(--radius);
    display:grid;place-items:center;padding:24px;
    transition:.3s;filter:grayscale(1);opacity:.75;
    box-shadow:var(--shadow-sm);
}
.partner:hover{
    filter:none;opacity:1;transform:translateY(-4px);
    border-color:var(--accent);
    box-shadow:var(--shadow-md);
}
.partner img{max-height:60px;max-width:100%;object-fit:contain}

/* ===== CONTACTS ===== */
.contacts{background:var(--bg)}
.contacts-grid{
    display:grid;grid-template-columns:1fr 1fr;gap:32px;
}
.contact-block{
    background:var(--bg-2);border:1px solid var(--border);
    border-radius:var(--radius);padding:36px;
    transition:.3s;
}
.contact-block:hover{box-shadow:var(--shadow-md)}
.contact-block h3{
    font-size:13px;color:var(--accent);
    text-transform:uppercase;letter-spacing:.18em;
    margin-bottom:20px;font-weight:700;
}
.contact-item{
    padding:14px 0;border-bottom:1px solid var(--border);
    display:flex;flex-direction:column;gap:4px;
}
.contact-item:last-child{border-bottom:none}
.contact-item .label{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.1em}
.contact-item .value{font-size:16px;color:var(--text);font-weight:500}
.contact-item a.value{color:var(--accent)}
.contact-item a:hover{color:var(--accent-2)}

/* ===== MAP ===== */
.map-wrap{
    width:100%;height:420px;
    border-top:1px solid var(--border);
    background:var(--bg-3);
}
.map-wrap iframe{width:100%;height:100%;border:0}

/* ===== FOOTER ===== */
.footer{
    background:var(--accent);padding:40px 0;
    text-align:center;color:rgba(255,255,255,.85);font-size:13px;
}
.footer .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.footer a:hover{color:#fff}

/* ===== PAGE HEADER (inner pages) ===== */
.page-hero{
    padding:180px 0 80px;
    background:
            linear-gradient(180deg,rgba(255,255,255,.8),rgba(245,247,250,1)),
            url('/img/hero-bg.jpg') center/cover;
    text-align:center;
    border-bottom:1px solid var(--border);
}
.page-hero h1{
    font-size:clamp(36px,5vw,56px);font-weight:800;
    background:linear-gradient(135deg,var(--accent),var(--accent-2));
    -webkit-background-clip:text;background-clip:text;
    -webkit-text-fill-color:transparent;
    margin-bottom:14px;
}
.page-hero p{color:var(--muted);max-width:640px;margin:0 auto}

/* ===== VACANCIES ===== */
.vacancy{
    background:var(--bg);border:1px solid var(--border);
    border-radius:var(--radius);padding:40px;margin-bottom:24px;
    transition:.3s;
    box-shadow:var(--shadow-sm);
}
.vacancy:hover{
    border-color:var(--accent);
    box-shadow:var(--shadow-md);
}
.vacancy h2{
    font-size:26px;color:var(--text);margin-bottom:8px;
    display:flex;align-items:center;gap:14px;font-weight:700;
}
.vacancy h2::before{
    content:"";width:6px;height:28px;background:var(--accent);border-radius:3px;
}
.vacancy .goal{
    color:var(--text-2);font-style:italic;margin:16px 0 24px;
    padding:16px 20px;background:var(--accent-light);border-radius:10px;
    border-left:3px solid var(--accent);
}
.vacancy h3{
    font-size:13px;color:var(--accent);
    text-transform:uppercase;letter-spacing:.15em;
    margin:24px 0 14px;font-weight:700;
}
.vacancy ul{padding-left:0}
.vacancy ul li{
    position:relative;padding:6px 0 6px 28px;
    color:var(--text);font-size:15px;
}
.vacancy ul li::before{
    content:"";position:absolute;left:0;top:14px;
    width:14px;height:2px;background:var(--accent);
}

.resume-banner{
    background:linear-gradient(135deg,var(--accent) 0%,var(--accent-2) 100%);
    border-radius:var(--radius);padding:28px 36px;
    margin-bottom:40px;display:flex;align-items:center;
    justify-content:space-between;gap:20px;flex-wrap:wrap;
    box-shadow:var(--shadow-md);
}
.resume-banner p{font-size:16px;color:#fff}
.resume-banner a{color:#fff;font-weight:600;text-decoration:underline}
.resume-banner .btn-primary{
    background:#fff;color:var(--accent);
    box-shadow:none;
}
.resume-banner .btn-primary:hover{background:var(--accent-light)}

/* ===== INFO PAGE ===== */
.info-content{max-width:880px;margin:0 auto}
.info-card{
    background:var(--bg);border:1px solid var(--border);
    border-radius:var(--radius);padding:32px 36px;margin-bottom:18px;
    position:relative;overflow:hidden;
    box-shadow:var(--shadow-sm);
    transition:.3s;
}
.info-card:hover{box-shadow:var(--shadow-md)}
.info-card::before{
    content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
    background:var(--accent);
}
.info-card p{font-size:16px;color:var(--text);line-height:1.8}
.info-warn{
    background:#fff8f5;
    border-color:#f5d6c4;
}
.info-warn::before{background:#d97a4f}

/* ===== ANIMATIONS ===== */
.reveal{opacity:0;transform:translateY(30px);transition:all .8s ease}
.reveal.active{opacity:1;transform:none}

/* ===== RESPONSIVE ===== */
@media (max-width:960px){
    .about-grid{grid-template-columns:1fr;gap:50px}
    .contacts-grid{grid-template-columns:1fr;gap:20px}
    .section{padding:80px 0}
}
@media (max-width:768px){
    .nav{
        position:fixed;
        top:78px;
        left:0;
        right:0;
        background:#ffffff;
        padding:24px;
        border-bottom:1px solid var(--border);
        box-shadow:var(--shadow-md);

        /* ключевое: прячем меню за пределы экрана */
        opacity:0;
        visibility:hidden;
        transform:translateY(-20px);
        transition:opacity .3s ease, transform .3s ease, visibility .3s ease;
        pointer-events:none;
    }
    .nav.open{
        opacity:1;
        visibility:visible;
        transform:translateY(0);
        pointer-events:auto;
    }
    .nav ul{
        flex-direction:column;
        gap:18px;
        text-align:center;
    }
    .nav a{
        display:block;
        padding:10px 0;
        font-size:16px;
    }
    .burger{display:block}
    .header-btn{display:none}
    .about-features{grid-template-columns:1fr}
    .vacancy{padding:28px 22px}
    .contact-block{padding:24px}
    .page-hero{padding:140px 0 60px}
    .resume-banner{padding:22px;text-align:center;justify-content:center}
}

/* Блокировка скролла при открытом мобильном меню */
body.no-scroll{
    overflow:hidden;
    /* компенсируем исчезновение скроллбара чтобы контент не дёргался */
    padding-right:var(--scrollbar-width,0px);
}