/* =========================================
   1. ПЕРЕМЕННЫЕ И БАЗОВЫЕ СТИЛИ
   ========================================= */
:root {
    --color-dark: #0d0d0d;
    --color-dark-secondary: #1a1a1a;
    --color-light: #f5f5f5;
    --color-text: #222222;
    --color-text-light: #ffffff;
    --color-accent: #FFB300;
    --color-accent-hover: #E5A100;
    --font-heading: 'Oswald', sans-serif;
    --font-body: 'Inter', sans-serif;
    --transition-base: all 0.3s ease-in-out;
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background-color: var(--color-light);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.section-padding { padding: 100px 0; }

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--color-accent);
    margin-top: 10px;
}

.text-accent { color: var(--color-accent) !important; }
.bg-dark-custom { background-color: var(--color-dark) !important; color: var(--color-text-light); }
.bg-dark-secondary { background-color: var(--color-dark-secondary) !important; color: var(--color-text-light); }

/* Кнопки */
.btn-accent {
    background-color: var(--color-accent);
    color: var(--color-dark);
    border: 2px solid var(--color-accent);
    font-family: var(--font-heading);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
    padding: 10px 25px;
    transition: var(--transition-base);
}
.btn-accent:hover {
    background-color: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    color: var(--color-dark);
    transform: translateY(-2px);
}
.btn-outline-accent {
    background-color: transparent;
    color: white;
    border: 2px solid white;
    font-family: var(--font-heading);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
    padding: 10px 25px;
    transition: var(--transition-base);
}
.btn-outline-accent:hover {
    background-color: white;
    color: var(--color-dark);
    transform: translateY(-2px);
}

/* =========================================
   2. НАВИГАЦИЯ (NAVBAR)
   ========================================= */
.navbar {
    transition: var(--transition-base);
    padding: 15px 0;
    background-color: transparent;
}
.navbar.scrolled {
    background-color: rgba(13, 13, 13, 0.95);
    backdrop-filter: blur(10px);
    padding: 10px 0;
    box-shadow: 0 4px 6px rgba(0,0,0,0.3);
}
.navbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    color: white !important;
}
.navbar-brand img {
    height: 60px;
    width: auto;
    transition: var(--transition-base);
}
.navbar-brand .brand-text {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: 3px;
}
.nav-link {
    font-family: var(--font-heading);
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 1px;
    color: rgba(255,255,255,0.8) !important;
    transition: var(--transition-base);
    margin: 0 10px;
}
.nav-link:hover, .nav-link.active { color: var(--color-accent) !important; }

/* =========================================
   3. HERO СЕКЦИЯ
   ========================================= */
#hero {
    height: 100vh;
    min-height: 700px;
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.7)), 
                url('../assets/img/hero-background.jpg') no-repeat center center/cover;
    display: flex;
    align-items: center;
    position: relative;
    color: white;
}
.hero-content h1 { font-size: 4rem; font-weight: 700; letter-spacing: 2px; margin-bottom: 1rem; }
.hero-content p { font-size: 1.5rem; font-weight: 300; margin-bottom: 2rem; opacity: 0.9; }

.hero-counters {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(13, 13, 13, 0.85);
    backdrop-filter: blur(5px);
    border-top: 3px solid var(--color-accent);
    padding: 30px 0;
}
.counter-item { text-align: center; }
.counter-value { font-family: var(--font-heading); font-size: 2.5rem; font-weight: 700; color: var(--color-accent); display: block; }
.counter-label { font-size: 0.9rem; text-transform: uppercase; letter-spacing: 1px; opacity: 0.8; }

/* =========================================
   4. ИСТОРИЯ (TIMELINE)
   ========================================= */
.history-intro-img {
    position: relative;
    overflow: hidden;
    border-radius: 4px;
    box-shadow: 0 15px 40px rgba(0,0,0,0.2);
}
.history-intro-img img {
    width: 100%;
    height: 450px;
    object-fit: cover;
    transition: var(--transition-base);
    filter: grayscale(30%);
}
.history-intro-img:hover img { transform: scale(1.03); filter: grayscale(0%); }
.history-intro-img::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 40%;
    background: linear-gradient(to top, rgba(13,13,13,0.7), transparent);
    pointer-events: none;
}
.timeline { position: relative; padding: 20px 0; }
.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 100%;
    background-color: var(--color-dark-secondary);
}
.timeline-item { margin-bottom: 40px; position: relative; width: 50%; padding: 0 40px; }
.timeline-item:nth-child(odd) { left: 0; text-align: right; }
.timeline-item:nth-child(even) { left: 50%; text-align: left; }
.timeline-item::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background-color: var(--color-accent);
    border: 4px solid var(--color-light);
    border-radius: 50%;
    top: 5px;
    z-index: 1;
}
.timeline-item:nth-child(odd)::before { right: -10px; }
.timeline-item:nth-child(even)::before { left: -10px; }
.timeline-year { font-family: var(--font-heading); font-size: 1.5rem; font-weight: 700; color: var(--color-accent); margin-bottom: 5px; }
.timeline-content {
    background: white;
    padding: 20px;
    border-radius: 4px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    border-left: 3px solid var(--color-accent);
}
.timeline-item:nth-child(odd) .timeline-content { border-left: none; border-right: 3px solid var(--color-accent); }

/* =========================================
   5. ЗАВОД (FACTORY)
   ========================================= */
.factory-intro-img {
    position: relative;
    overflow: hidden;
    border-radius: 4px;
    box-shadow: 0 15px 40px rgba(0,0,0,0.4);
}
.factory-intro-img img { width: 100%; height: 450px; object-fit: cover; transition: var(--transition-base); }
.factory-intro-img:hover img { transform: scale(1.03); }
.factory-card {
    background: white;
    padding: 30px;
    border-radius: 4px;
    height: 100%;
    transition: var(--transition-base);
    border-bottom: 3px solid transparent;
}
.factory-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    border-bottom-color: var(--color-accent);
}
.factory-icon { font-size: 2.5rem; color: var(--color-accent); margin-bottom: 15px; }
.warranty-banner {
    background-color: var(--color-accent);
    color: var(--color-dark);
    padding: 20px;
    text-align: center;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    letter-spacing: 1px;
    font-weight: 600;
    margin-top: 40px;
    border-radius: 4px;
}

/* =========================================
   6. ПРОДУКЦИЯ (PRODUCTS)
   ========================================= */
.product-card {
    background: white;
    border: none;
    border-radius: 4px;
    overflow: hidden;
    transition: var(--transition-base);
    height: 100%;
    display: flex;
    flex-direction: column;
}
.product-card:hover { transform: translateY(-5px); box-shadow: 0 15px 30px rgba(0,0,0,0.15); }
.product-card img { height: 250px; object-fit: cover; transition: var(--transition-base); }
.product-card:hover img { transform: scale(1.05); }
.product-card .card-body { padding: 25px; flex-grow: 1; display: flex; flex-direction: column; }
.product-card .card-title { font-size: 1.2rem; margin-bottom: 15px; flex-grow: 1; }

/* =========================================
   7. КОНТАКТЫ И ФУТЕР
   ========================================= */
.contact-email-box {
    border: 2px solid var(--color-accent);
    transition: var(--transition-base);
}
.contact-email-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(255, 179, 0, 0.15);
}
.contact-email-link { transition: var(--transition-base); }
.contact-email-link:hover {
    color: #fff !important;
    text-shadow: 0 0 10px rgba(255, 179, 0, 0.5);
}
footer {
    background-color: var(--color-dark);
    color: rgba(255,255,255,0.6);
    padding: 40px 0;
    border-top: 3px solid var(--color-accent);
}
.footer-logo { display: flex; align-items: center; gap: 12px; }
.footer-logo img { height: 50px; width: auto; }
.footer-logo .brand-text {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: white;
}
footer a { color: rgba(255,255,255,0.6); text-decoration: none; transition: var(--transition-base); }
footer a:hover { color: var(--color-accent); }

/* =========================================
   8. АНИМАЦИИ И УТИЛИТЫ
   ========================================= */
.fade-in-section {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
    will-change: opacity, visibility;
}
.fade-in-section.is-visible { opacity: 1; transform: none; }

#scrollTopBtn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--color-accent);
    color: var(--color-dark);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    z-index: 1000;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    font-weight: bold;
}
#scrollTopBtn.visible { opacity: 1; visibility: visible; }
#scrollTopBtn:hover { background-color: var(--color-accent-hover); transform: translateY(-3px); }


/* =========================================
   9. АДАПТИВНОСТЬ ДЛЯ ПЛАНШЕТОВ И ТЕЛЕФОНОВ
   -------------------------------------------------------------
   ВАЖНО: этот блок НЕ меняет десктоп. Все правила применяются
   только при ширине экрана меньше 992px (планшет) и 768px (телефон).
   ========================================= */

/* --- Планшеты и меньше (<= 991.98px) --- */
@media (max-width: 991.98px) {

    /* Навигация: тёмный фон и вертикальные ссылки в раскрытом меню */
    .navbar-collapse {
        background-color: rgba(13, 13, 13, 0.98);
        border-radius: 6px;
        padding: 1rem;
        margin-top: 10px;
    }
    .nav-link {
        margin: 6px 0;
        text-align: center;
    }

    /* Hero: убираем жёсткую привязку к 100vh, добавляем запас снизу
       под абсолютные счётчики, чтобы контент не наезжал на них */
    #hero {
        height: auto;
        min-height: 0;
        padding: 120px 0 240px;
    }

    /* Таймлайн: перестраиваем в одну колонку */
    .timeline::before { left: 20px; }
    .timeline-item {
        width: 100%;
        left: 0 !important;
        padding-left: 55px;
        padding-right: 0;
        text-align: left !important;
    }
    .timeline-item::before { left: 11px !important; right: auto !important; }
    .timeline-item .timeline-content {
        border-right: none !important;
        border-left: 3px solid var(--color-accent) !important;
    }
}

/* --- Телефоны (<= 767.98px) --- */
@media (max-width: 767.98px) {

    .section-padding { padding: 60px 0; }
    .section-title { font-size: 1.9rem; }

    /* Логотип в шапке поменьше */
    .navbar-brand img { height: 45px; }
    .navbar-brand .brand-text { font-size: 1.4rem; letter-spacing: 2px; }

    /* Hero: компактнее, но с местом под счётчики */
    #hero {
        padding: 110px 0 260px;
    }
    .hero-content h1 { font-size: 2.2rem; letter-spacing: 1px; }
    .hero-content p { font-size: 1.05rem; margin-bottom: 1.5rem; }
    .hero-content .btn-lg { padding: 10px 20px; font-size: 0.95rem; }

    /* Счётчики: меньше шрифт, чтобы влезали в 2 колонки */
    .hero-counters { padding: 18px 0; }
    .counter-value { font-size: 1.5rem; }
    .counter-label { font-size: 0.7rem; letter-spacing: 0.5px; }

    /* Картинки в секциях делаем пониже */
    .history-intro-img img,
    .factory-intro-img img { height: 260px; }

    /* Карточки завода */
    .factory-card { padding: 22px; }

    /* Баннер гарантии */
    .warranty-banner { font-size: 1.05rem; padding: 16px; }

    /* Карточки продукции */
    .product-card img { height: 210px; }
    .product-card .card-body { padding: 20px; }
    .product-card .card-title { font-size: 1.05rem; }

    /* Контакты: email-адрес не должен вылезать за пределы */
    .contact-email-box { padding: 30px 20px !important; width: 100%; }
    .contact-email-box a { font-size: 1.5rem !important; word-break: break-word; }

    /* Футер: центрируем содержимое */
    footer .row { text-align: center; }
    footer .text-md-end { text-align: center !important; }
    .footer-logo { justify-content: center; }

    /* Кнопка «наверх» чуть меньше и ближе к краю */
    #scrollTopBtn {
        width: 44px;
        height: 44px;
        font-size: 1.2rem;
        bottom: 20px;
        right: 20px;
    }
}

/* --- Очень узкие телефоны (<= 400px) --- */
@media (max-width: 400px) {
    .hero-content h1 { font-size: 1.8rem; }
    .counter-value { font-size: 1.25rem; }
    .counter-label { font-size: 0.62rem; }
    .section-title { font-size: 1.6rem; }
    .contact-email-box a { font-size: 1.15rem !important; }
}