/* Тема сайта ООО "Эверест". Откат: вернуть templates/index.html из /root/profalpsite_backup/v1 */
:root {
    --ink: #14181f;
    --ink-2: #1d232c;
    --text: #2b3440;
    --muted: #6b7684;
    --bg: #f5f6f8;
    --surface: #ffffff;
    --line: #e3e6eb;
    --accent: #f26b1d;
    --accent-dark: #d4560c;
    --radius: 14px;
    --shadow: 0 10px 30px rgba(20, 24, 31, .08);
    --shadow-lg: 0 18px 40px rgba(20, 24, 31, .16);
}

html { scroll-behavior: smooth; scroll-padding-top: 72px; }

body {
    font-family: 'Roboto', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    margin: 0;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, .navbar-brand, .btn { font-family: 'Montserrat', sans-serif; }

a { color: var(--accent); }

/* ---------- Навигация ---------- */
.site-nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1030;
    padding: 14px 0;
    transition: background-color .3s ease, padding .3s ease, box-shadow .3s ease;
}
.site-nav.scrolled,
.site-nav.open {
    background: rgba(20, 24, 31, .94);
    backdrop-filter: blur(8px);
    padding: 8px 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, .25);
}
.site-nav .navbar-brand {
    color: #fff;
    font-weight: 800;
    letter-spacing: .5px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.site-nav .navbar-brand i { color: var(--accent); }
.site-nav .nav-link {
    color: rgba(255, 255, 255, .85);
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: .95rem;
    padding: .5rem 1rem !important;
    transition: color .2s ease;
}
.site-nav .nav-link:hover,
.site-nav .nav-link.active { color: var(--accent); }
.site-nav .navbar-toggler { border-color: rgba(255, 255, 255, .4); }
.site-nav .navbar-toggler-icon { filter: invert(1); }
.nav-phone {
    color: #fff;
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
}
.nav-phone i { color: var(--accent); margin-right: 6px; }
.nav-phone:hover { color: var(--accent); }

/* ---------- Кнопки ---------- */
.btn-accent {
    background: var(--accent);
    border: 2px solid var(--accent);
    color: #fff;
    font-weight: 700;
    border-radius: 50px;
    padding: 12px 28px;
    transition: background-color .2s ease, transform .2s ease, box-shadow .2s ease;
}
.btn-accent:hover,
.btn-accent:focus {
    background: var(--accent-dark);
    border-color: var(--accent-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(242, 107, 29, .35);
}
.btn-ghost {
    border: 2px solid rgba(255, 255, 255, .7);
    color: #fff;
    font-weight: 700;
    border-radius: 50px;
    padding: 12px 28px;
    transition: background-color .2s ease, color .2s ease;
}
.btn-ghost:hover { background: #fff; color: var(--ink); }

/* ---------- Hero ---------- */
.hero-section {
    position: relative;
    min-height: 100vh;
    min-height: 100svh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--ink);
    color: #fff;
}
.video-background { position: absolute; inset: 0; z-index: 0; }
.background-video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.hero-section .overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    background:
        linear-gradient(180deg, rgba(20, 24, 31, .55) 0%, rgba(20, 24, 31, .35) 45%, rgba(20, 24, 31, .85) 100%);
}
.hero-content { position: relative; z-index: 2; padding-top: 80px; padding-bottom: 120px; }
.hero-eyebrow {
    display: inline-block;
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: .8rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: #fff;
    background: rgba(242, 107, 29, .9);
    padding: 6px 14px;
    border-radius: 50px;
    margin-bottom: 1.25rem;
}
.hero-section h1 {
    font-weight: 800;
    font-size: clamp(2rem, 5.5vw, 4rem);
    line-height: 1.1;
    max-width: 900px;
    margin: 0 auto 1.25rem;
    text-shadow: 0 2px 12px rgba(0, 0, 0, .35);
}
.hero-section h1 span { color: var(--accent); }
.hero-section .lead {
    font-size: clamp(1.05rem, 2vw, 1.3rem);
    color: rgba(255, 255, 255, .9);
    max-width: 680px;
    margin: 0 auto 2rem;
}
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero-actions .btn { font-size: 1.05rem; }

.scroll-down-btn {
    position: absolute;
    left: 50%;
    bottom: 28px;
    z-index: 2;
    width: 46px;
    height: 46px;
    margin-left: -23px;
    border: 2px solid rgba(255, 255, 255, .7);
    border-radius: 50%;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    animation: scrollHint 2s infinite;
}
.scroll-down-btn:hover { color: var(--accent); border-color: var(--accent); }
@keyframes scrollHint {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(8px); }
}

/* ---------- Секции ---------- */
section { padding: 90px 0; }
.section-alt { background: var(--surface); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 50px; }
.section-kicker {
    display: block;
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: .8rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: .5rem;
}
.section-head h2 {
    font-weight: 800;
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    color: var(--ink);
    margin-bottom: 1rem;
}
.section-head p { color: var(--muted); font-size: 1.1rem; line-height: 1.6; margin: 0; }

/* ---------- Преимущества ---------- */
.feature {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 30px 24px;
    height: 100%;
    box-shadow: var(--shadow);
    transition: transform .25s ease, box-shadow .25s ease;
}
.feature:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    background: rgba(242, 107, 29, .12);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 18px;
}
.feature h3 { font-size: 1.15rem; font-weight: 700; color: var(--ink); }
.feature p { color: var(--muted); margin: 0; line-height: 1.55; }

/* ---------- Услуги ---------- */
.service-card {
    border: none;
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--surface);
    box-shadow: var(--shadow);
    transition: transform .25s ease, box-shadow .25s ease;
    text-align: left;
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.service-card .img-wrap { overflow: hidden; aspect-ratio: 4 / 3; background: var(--line); }
.service-card .card-img-top {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
}
.service-card:hover .card-img-top { transform: scale(1.06); }
.service-card .card-body { padding: 22px 22px 24px; }
.service-card .card-title { font-weight: 700; color: var(--ink); font-size: 1.15rem; }
.service-card .card-text { color: var(--muted); line-height: 1.55; }
.service-card .btn-more {
    align-self: flex-start;
    background: none;
    border: none;
    padding: 0;
    color: var(--accent);
    font-weight: 700;
    font-size: .95rem;
}
.service-card .btn-more i { transition: transform .2s ease; margin-left: 6px; }
.service-card .btn-more[aria-expanded="true"] i { transform: rotate(180deg); }
.service-card .subdesc {
    border-left: 3px solid var(--accent);
    padding: 4px 0 4px 14px;
    color: var(--muted);
    font-size: .95rem;
}

/* ---------- Цифры ---------- */
.stats-band {
    background: var(--ink) linear-gradient(135deg, var(--ink) 0%, var(--ink-2) 100%);
    color: #fff;
    padding: 70px 0;
}
.stat { text-align: center; padding: 10px; }
.counter {
    font-family: 'Montserrat', sans-serif;
    font-weight: 800;
    font-size: clamp(2.5rem, 6vw, 3.75rem);
    color: var(--accent);
    line-height: 1;
}
.stat p { color: rgba(255, 255, 255, .8); margin: 10px 0 0; font-size: 1.05rem; }
.stats-band .about-text {
    max-width: 760px;
    margin: 0 auto 45px;
    text-align: center;
    color: rgba(255, 255, 255, .85);
    font-size: 1.15rem;
    line-height: 1.65;
}
.stats-band h2 { color: #fff; }

/* ---------- Галерея ---------- */
.gallery-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 36px;
}
.gallery-filters .btn {
    border-radius: 50px;
    border: 1px solid var(--line);
    background: var(--surface);
    color: var(--text);
    font-weight: 600;
    font-size: .9rem;
    padding: 8px 18px;
    transition: all .2s ease;
}
.gallery-filters .btn:hover { border-color: var(--accent); color: var(--accent); }
.gallery-filters .btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

.gallery-tile {
    display: block;
    position: relative;
    border: 0;
    padding: 0;
    width: 100%;
    border-radius: var(--radius);
    overflow: hidden;
    aspect-ratio: 4 / 3;
    background: var(--line);
    cursor: zoom-in;
    box-shadow: var(--shadow);
}
.gallery-tile img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.gallery-tile::after {
    content: "\f00e";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    color: #fff;
    background: rgba(20, 24, 31, .45);
    opacity: 0;
    transition: opacity .25s ease;
}
.gallery-tile:hover img { transform: scale(1.06); }
.gallery-tile:hover::after { opacity: 1; }
.gallery-tile .tile-label {
    position: absolute;
    left: 12px;
    bottom: 12px;
    z-index: 1;
    background: rgba(20, 24, 31, .75);
    color: #fff;
    font-size: .8rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 50px;
}

.lightbox .modal-content { background: transparent; border: 0; }
.lightbox img { width: 100%; max-height: 85vh; object-fit: contain; border-radius: 10px; }
.lightbox .btn-close { position: absolute; top: -40px; right: 0; filter: invert(1); opacity: .9; }

/* ---------- Контакты ---------- */
.contact-card {
    background: var(--ink) linear-gradient(135deg, var(--ink) 0%, #2a2f38 100%);
    color: #fff;
    border-radius: 20px;
    padding: 50px 30px;
    text-align: center;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}
.contact-card::before {
    content: "";
    position: absolute;
    width: 320px;
    height: 320px;
    right: -120px;
    top: -120px;
    border-radius: 50%;
    background: rgba(242, 107, 29, .18);
}
.contact-card > * { position: relative; }
.contact-card h2 { font-weight: 800; color: #fff; }
.contact-card p { color: rgba(255, 255, 255, .8); font-size: 1.1rem; }
.contact-phone {
    font-size: clamp(1.4rem, 4vw, 2rem);
    padding: 14px 36px;
}

/* ---------- Футер ---------- */
footer {
    background: var(--ink);
    color: rgba(255, 255, 255, .65);
    padding: 30px 0;
    font-size: .95rem;
}
footer a { color: #fff; text-decoration: none; }
footer a:hover { color: var(--accent); }

/* ---------- Плавающая кнопка звонка (мобильные) ---------- */
.call-fab {
    position: fixed;
    right: 18px;
    bottom: 18px;
    z-index: 1040;
    width: 58px;
    height: 58px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    box-shadow: 0 10px 25px rgba(242, 107, 29, .45);
    text-decoration: none;
}
.call-fab:hover { color: #fff; background: var(--accent-dark); }
.call-fab::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 2px solid var(--accent);
    animation: ring 2s infinite;
}
@keyframes ring {
    from { transform: scale(1); opacity: .8; }
    to { transform: scale(1.6); opacity: 0; }
}

/* ---------- Появление при прокрутке ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: none; }

@media (max-width: 991.98px) {
    .site-nav .navbar-collapse { padding: 10px 0; }
    .call-fab { display: flex; }
}
@media (max-width: 575.98px) {
    section { padding: 64px 0; }
    .hero-actions .btn { width: 100%; }
    .contact-card { padding: 40px 20px; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .reveal { opacity: 1; transform: none; transition: none; }
    .scroll-down-btn, .call-fab::before { animation: none; }
}