/* =========================================
   0) DESIGN TOKENS (Variables)
   ========================================= */
:root {
    /* Brand colors */
    --brand: #0d6efd;                 /* Bootstrap primary */
    --brand-600: #0b5ed7;
    --brand-700: #0a58ca;

    --accent: #00f5ff;               /* неон */
    --accent-2: #6a00f4;             /* фиолетовый */
    --accent-soft: rgba(0,245,255,.25);

    /* Neutral palette */
    --gray-50:  #f8f9fa;
    --gray-100: #f2f4f7;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;

    /* Surfaces / glass */
    --bg-hero-overlay: rgba(0, 51, 102, .60);
    --glass: rgba(10, 20, 35, .75);
    --glass-border: rgba(0, 255, 255, .18);

    /* Typography */
    --font-base: 'Roboto', system-ui, -apple-system, Segoe UI, Arial, sans-serif;
    --font-heading: 'Montserrat', var(--font-base);

    /* Sizing / radius / shadows */
    --radius: 12px;
    --radius-xl: 16px;
    --shadow-sm: 0 4px 12px rgba(0,0,0,.12);
    --shadow-md: 0 8px 18px rgba(0,0,0,.15);
    --shadow-lg: 0 20px 60px rgba(0,0,0,.30);

    /* Focus ring */
    --ring: 0 0 0 3px rgba(0, 245, 255, .25);

    /* Spacing */
    --section-y: 4rem;

    /* Mobile overlay */
    --nav-overlay: #0d2f5a;
}

/* =========================================
   1) GLOBAL RESETS & BASE
   ========================================= */
*,
*::before,
*::after { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

body {
    font-family: var(--font-base);
    color: var(--gray-800);
    background-color: #fff;
}

img { max-width: 100%; height: auto; display: block; }

section { scroll-margin-top: 160px; }

/* =========================================
   2) UTILS
   ========================================= */
.text-soft { color: var(--gray-600) !important; }
.text-contrast { color: #fff !important; }
.shadow-soft { box-shadow: var(--shadow-sm); }
.shadow-elevate { box-shadow: var(--shadow-md); }
.rounded-xl { border-radius: var(--radius-xl); }

/* =========================================
   3) TOP BAR & NAVBAR
   ========================================= */
.top-bar {
    font-size: 1.05rem;
    padding: .5rem 0;
    background-color: #353535;
    color: #fff;
}
.top-bar a { color: #fff; text-decoration: none; }
.top-bar a:hover { color: #e0e0e0; }
.top-bar .bi { color: #fff; margin-right: .5rem; transition: color .3s; }
.top-bar .bi:hover { color: #99CCFF; }

.h_navbar {
    background: #fff;
    padding: 12px 24px;
    box-shadow: 0 2px 10px rgba(0,0,0,.05);
    border-bottom: 1px solid rgba(0,0,0,.08);
}
.navbar-brand img {
    max-height: 60px; width: auto;
    transition: max-height .3s ease;
}

/* NAV links */
.nav-link {
    position: relative;
    display: inline-block;
    color: #333;
    font-weight: 600;
    text-decoration: none;
    padding: 6px 14px;
    transition: color .3s ease;
}
.nav-link::after {
    content: "";
    position: absolute;
    left: 0; bottom: -3px;
    width: 100%; height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    transform: scaleX(0);
    transform-origin: right;
    transition: transform .3s ease;
}
.nav-link:hover { color: var(--accent-2); }
.nav-link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* SOCIAL ICONS (в хедере/футере) */
.social-icons .bi {
    color: #009688;
    font-size: 2rem;
    margin: 0 15px;
    transition: color .3s ease, transform .3s ease;
}
.social-icons .bi:hover {
    color: var(--brand);
    transform: scale(1.1);
}

/* =========================================
   4) HERO (видео фон)
   ========================================= */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background-size: cover;
    background-position: center;
    position: relative;
}
.video-wrapper {
    position: absolute; inset: 0; overflow: hidden; z-index: 0;
}
.hero-video {
    width: 100%; height: 100%;
    object-fit: cover; z-index: 0;
}
.video-overlay {
    position: absolute; inset: 0;
    background: var(--bg-hero-overlay);
    z-index: 1;
}
.content { z-index: 2; position: relative; }
.hero .btn {
    transition: transform .3s ease, box-shadow .3s ease, filter .2s ease;
}
.hero .btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
    filter: brightness(1.02);
}

/* =========================================
   5) CARDS / GENERIC
   ========================================= */
.card { transition: transform .3s ease, box-shadow .3s ease; }
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }

/* =========================================
   6) WHY US
   ========================================= */
.why-us { padding: var(--section-y) 0; background: var(--gray-50); }
.why-us .bi { font-size: 2.5rem; color: var(--brand); transition: color .3s; }
.why-us .card:hover .bi { color: var(--brand-700); }

/* =========================================
   7) SERVICES
   ========================================= */
.services { padding: var(--section-y) 0; background: #2d2d2d; color: #fff; }
.services .bi { font-size: 2.5rem; color: var(--brand); transition: color .3s; }
.services .card { background: #fff; color: var(--gray-800); }
.services .card:hover .bi { color: var(--brand-700); }
.services .text-center.mt-5 {
    background-color: rgba(0,0,0,.10);
    padding: 2rem; border-radius: var(--radius);
}
.services .btn-success {
    font-size: 1.2rem; padding: .75rem 2rem;
    transition: all .3s ease; display: flex; align-items: center; justify-content: center;
}
.services .btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,128,0,.30);
}

/* =========================================
   8) TESTIMONIALS
   ========================================= */
.testimonials { padding: var(--section-y) 0; background: #8fb4ca; }
.testimonials .card {
    border: none; background: #fff; box-shadow: var(--shadow-sm);
}
.testimonials .avatar { width: 85px; height: 100px; object-fit: cover; }
.testimonials .bi-quote { font-size: 2rem; color: var(--brand); transition: color .3s; }
.testimonials .card:hover .bi-quote { color: var(--brand-700); }

/* =========================================
   9) FAQ
   ========================================= */
.faq { padding: var(--section-y) 0; background: #fff; }
.faq .accordion-button {
    font-weight: 500; background-color: var(--gray-50); color: #333; transition: all .3s;
}
.faq .accordion-button:hover,
.faq .accordion-button:focus { background-color: var(--gray-200); color: var(--brand); }
.faq .accordion-button::after { transition: transform .3s; }
.faq .accordion-button:not(.collapsed) { background-color: var(--gray-200); color: var(--brand); }
.faq .accordion-body { background-color: #fff; padding: 1.5rem; }

/* =========================================
   10) CTA
   ========================================= */
.home-cta { padding: var(--section-y) 0; background: #2d4466; color: #fff; }

/* =========================================
   11) FOOTER
   ========================================= */
footer { background-color: #0d2f5a; color: #fff; }
footer h5 { font-size: 1.2rem; margin-bottom: 1rem; }
footer a { color: #fff; text-decoration: none; transition: color .3s; }
footer a:hover { color: #e0e0e0; }
footer p { font-size: .9rem; }

/* =========================================
   12) MODAL (neo glass)
   ========================================= */
/* стеклянная карточка */
.modal-glass{
    background: linear-gradient(180deg, rgba(10,20,35,.85), rgba(10,20,35,.85));
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg), 0 0 40px rgba(0,245,255,.08) inset;
    color: #fff;
}
.modal-header { border: 0; }
.modal-header .modal-title{ letter-spacing:.2px; }

/* floating labels на тёмном */
.form-control-dark{
    background: rgba(255,255,255,.04);
    border: 1px solid rgba(255,255,255,.12);
    color:#fff;
}
.form-control-dark::placeholder{ color: transparent; }
.form-floating > label{ color: rgba(255,255,255,.70); }
.form-control-dark:focus{
    color:#fff;
    background: rgba(255,255,255,.06);
    border-color: var(--accent);
    box-shadow: var(--ring);
}

/* иконки внутри инпутов */
.has-icon{ position: relative; }
.input-icon{
    position: absolute; right: 12px; top: 50%; transform: translateY(-50%);
    opacity: .7; pointer-events: none; font-size: 1rem;
}

/* Кнопка — неоновый градиент */
.btn-neon{
    position: relative; border: 0; color: #001018; font-weight: 600;
    padding: .9rem 1.1rem; border-radius: var(--radius);
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    transition: transform .15s ease, box-shadow .3s ease, filter .2s ease;
}
.btn-neon:hover{
    transform: translateY(-1px);
    box-shadow: 0 10px 25px var(--accent-soft), 0 0 30px rgba(106,0,244,.20);
    filter: brightness(1.05);
}
.btn-neon:active{ transform: translateY(0); }
.btn-neon .btn-spinner{ margin-left: .25rem; }

/* валидность */
.was-validated .form-control:invalid,
.form-control.is-invalid{
    border-color: #ff6b6b !important;
    box-shadow: 0 0 0 3px rgba(255, 107, 107, .20);
}
.was-validated .form-control:valid,
.form-control.is-valid{
    border-color: #2ecc71 !important;
    box-shadow: 0 0 0 3px rgba(46, 204, 113, .20);
}

/* honeypot */
.hp-field{
    position:absolute !important; left:-9999px !important;
    height:0 !important; width:0 !important; opacity:0 !important;
}

/* =========================================
   13) COOKIE BANNER
   ========================================= */
.cookie-banner {
    position: fixed; inset: auto 0 0 0;
    background: rgba(0,0,0,.90);
    color: #fff; padding: 20px;
    z-index: 1000; display: none; transition: opacity .3s;
}
.cookie-banner.show { display: block; opacity: 1; }
.cookie-banner .btn { margin: 0 10px; transition: transform .3s; }
.cookie-banner .btn:hover { transform: translateY(-2px); }

.btn-glow {
    color: var(--accent);
    border: 2px solid var(--accent);
    background: transparent;
    transition: all .3s ease;
}
.btn-glow:hover {
    background: var(--accent);
    color: #000;
    box-shadow: 0 0 15px var(--accent);
}

/* Feature cards (Warum wir?) */
.feature-card {
    border-radius: var(--radius);
    transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
    border: 1px solid rgba(0,0,0,.06);
    background: #fff;
}
.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: rgba(0,0,0,.09);
}

.feature-icon {
    display: inline-grid;
    place-items: center;
    width: 64px; height: 64px;
    border-radius: 50%;
    background:
            radial-gradient(closest-side, rgba(255,255,255,.9), rgba(255,255,255,.75)),
            linear-gradient(90deg, var(--accent), var(--accent-2));
    box-shadow: 0 6px 20px rgba(0,0,0,.12), 0 0 16px rgba(0,245,255,.15);
}
.feature-icon i {
    font-size: 1.6rem;
    color: #0b1220; /* контраст внутри светлого круга */
}



/* =========================================
   14) RESPONSIVE
   ========================================= */
@media (max-width: 991.98px) {
    .navbar-collapse {
        position: fixed; inset: 0; width: 100%; height: 100%;
        background-color: var(--nav-overlay);
        color: #fff; opacity: 0; transition: opacity .3s ease;
        z-index: 1000; padding: 2rem;
        display: flex; flex-direction: column; align-items: center; justify-content: flex-start;
    }
    .navbar-collapse.collapsing { opacity: 0; height: 100%; }
    .navbar-collapse.show { opacity: 1; }

    .navbar-nav, .social-icons {
        text-align: center; margin: 1rem 0; margin-left: 0 !important;
    }
    .nav-item { margin: .5rem 0; }
    .nav-link {
        color: #fff !important; font-size: 1.5rem; padding: .5rem; transition: color .3s;
    }
    .nav-link:hover { color: #99CCFF !important; }

    .social-icons a {
        color: #fff; font-size: 2rem; margin: 0 1rem; transition: color .3s, transform .3s;
    }
    .social-icons a:hover { color: var(--brand); transform: scale(1.2); }

    body.navbar-open { overflow: hidden; }

    .navbar-collapse.show ~ main,
    .navbar-collapse.show ~ footer {
        filter: blur(5px); pointer-events: none; transition: filter .3s;
    }

    .navbar-toggler { border: none; padding: .5rem 1rem; }
    .navbar-toggler:focus { box-shadow: none; }

    .close-menu-btn {
        display: none; color: #fff; font-size: 1.5rem; transition: color .3s;
    }
    .navbar-collapse.show .close-menu-btn { display: block; z-index: 1001; }
    .close-menu-btn:hover { color: #99CCFF; }

    .hero-video { min-height: 100vh; }
    .navbar-brand img { max-height: 40px; }
    .top-bar { font-size: 1rem; padding: .3rem 0; }
}

@media (min-width: 1200px) {
    .hero { min-height: 100vh; }
    .content { padding: 4rem; }
}