/* ===================================
   Industrial Minimalist - Stone Equipment
   =================================== */

:root {
    --color-dark: #1a1a1a;
    --color-dark-2: #2d2d2d;
    --color-dark-3: #3a3a3a;
    --color-light: #f5f5f5;
    --color-white: #ffffff;
    --color-gray: #888888;
    --color-gray-light: #e0e0e0;
    --color-accent: #0066cc;
    --color-accent-light: #0088ff;

    --font-display: Arial, Helvetica, sans-serif;
    --font-body: Arial, Helvetica, sans-serif;

    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 80px;
    --spacing-xxl: 120px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-dark);
    background: var(--color-white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===================================
   Header
   =================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.header.scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.lang-switch {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
}

.lang-link {
    color: var(--color-gray);
    text-decoration: none;
    transition: color 0.3s ease;
}

.lang-link:hover,
.lang-link.active {
    color: var(--color-accent);
}

.lang-divider {
    color: var(--color-gray-light);
}

.logo {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    line-height: 1;
}

.logo img {
    max-height: 60px;
}

.nav {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-link {
    font-family: var(--font-display);
    font-size: 13px;
    font-weight: 500;
    color: var(--color-dark);
    text-decoration: none;
    letter-spacing: 2px;
    text-transform: uppercase;
    position: relative;
    padding: 4px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-dark);
    transition: all 0.3s ease;
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(135deg, rgba(26, 26, 26, 0.95) 0%, rgba(45, 45, 45, 0.9) 100%),
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 100px,
            rgba(255, 255, 255, 0.02) 100px,
            rgba(255, 255, 255, 0.02) 101px
        ),
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 100px,
            rgba(255, 255, 255, 0.02) 100px,
            rgba(255, 255, 255, 0.02) 101px
        );
    background: url(../images/banner.jpg);
    background-size: cover;
}

.hero-content {
    position: relative;
    z-index: 1;
    padding: var(--spacing-xxl) 0;
}

.hero-badge {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 12px;
    font-weight: 500;
    color: var(--color-accent);
    letter-spacing: 3px;
    border: 1px solid var(--color-accent);
    padding: 8px 16px;
    margin-bottom: var(--spacing-lg);
}

.hero-title {
    font-family: var(--font-display);
    font-weight: 300;
    line-height: 1;
    margin-bottom: var(--spacing-md);
}

.hero-title-line {
    display: block;
    font-size: clamp(48px, 10vw, 100px);
    color: var(--color-white);
    letter-spacing: 8px;
}

.hero-title-line.accent {
    color: var(--color-accent);
}

.hero-desc {
    font-size: 18px;
    color: var(--color-gray);
    max-width: 500px;
    margin-bottom: var(--spacing-lg);
    font-weight: 300;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    text-decoration: none;
    padding: 14px 32px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
}

.btn-primary:hover {
    background: var(--color-accent-light);
    border-color: var(--color-accent-light);
}

.btn-outline {
    background: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

.btn-outline:hover {
    background: var(--color-white);
    color: var(--color-dark);
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--color-gray);
    font-family: var(--font-display);
    font-size: 11px;
    letter-spacing: 3px;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-accent), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(1); }
    50% { opacity: 1; transform: scaleY(1.2); }
}

/* ===================================
   Section Styles
   =================================== */
.section-header {
    margin-bottom: var(--spacing-xl);
}

.section-tag {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 11px;
    font-weight: 500;
    color: var(--color-accent);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(36px, 6vw, 64px);
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: 4px;
    color: var(--color-dark);
}

/* ===================================
   About Section
   =================================== */
.about {
    padding: var(--spacing-xxl) 0;
    background: var(--color-white);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.about-card {
    text-align: center;
    padding: var(--spacing-lg) var(--spacing-md);
    border: 1px solid var(--color-gray-light);
    transition: all 0.3s ease;
}

.about-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

.about-number {
    display: block;
    font-family: var(--font-display);
    font-size: 42px;
    font-weight: 600;
    color: var(--color-dark);
    line-height: 1;
    margin-bottom: 8px;
}

.about-label {
    font-size: 13px;
    color: var(--color-gray);
    letter-spacing: 1px;
}

.about-text {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-text p {
    font-size: 18px;
    color: var(--color-dark-2);
    line-height: 1.8;
}

/* ===================================
   Products Section
   =================================== */
.products {
    padding: var(--spacing-xxl) 0;
    background: var(--color-light);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.product-card {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-gray-light);
    transition: all 0.3s ease;
}

.product-card:hover {
    border-color: var(--color-accent);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.product-icon {
    width: 56px;
    height: 56px;
    margin-bottom: var(--spacing-md);
    color: var(--color-dark);
}

.product-icon svg {
    width: 100%;
    height: 100%;
}

.product-title {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 500;
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 1px;
}

.product-desc {
    font-size: 15px;
    color: var(--color-gray);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.product-spec {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 12px;
    font-weight: 500;
    color: var(--color-accent);
    letter-spacing: 2px;
    padding: 6px 12px;
    border: 1px solid var(--color-accent);
}

/* ===================================
   Advantages Section
   =================================== */
.advantages {
    padding: var(--spacing-xxl) 0;
    background: var(--color-dark);
}

.advantages .section-title {
    color: var(--color-white);
}

.advantages-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.advantages-list {
    list-style: none;
    margin-top: var(--spacing-lg);
}

.advantages-list li {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.advantages-list li:last-child {
    border-bottom: none;
}

.adv-icon {
    flex-shrink: 0;
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 600;
    color: var(--color-accent);
    letter-spacing: 2px;
}

.adv-text strong {
    display: block;
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 500;
    color: var(--color-white);
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.adv-text p {
    font-size: 14px;
    color: var(--color-gray);
    line-height: 1.6;
}

.advantages-visual {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.adv-box {
    background: var(--color-dark-2);
    padding: var(--spacing-lg);
    text-align: center;
    border: 1px solid var(--color-dark-3);
    transition: all 0.3s ease;
}

.adv-box:hover {
    border-color: var(--color-accent);
}

.adv-box-number {
    display: block;
    font-family: var(--font-display);
    font-size: 48px;
    font-weight: 600;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 8px;
}

.adv-box-label {
    font-size: 12px;
    color: var(--color-gray);
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* ===================================
   Contact Section
   =================================== */
.contact {
    padding: var(--spacing-xxl) 0;
    background: var(--color-white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.contact-label {
    font-family: var(--font-display);
    font-size: 11px;
    font-weight: 500;
    color: var(--color-gray);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.contact-value {
    font-size: 18px;
    color: var(--color-dark);
    font-weight: 500;
}

.contact-value a {
    color: var(--color-accent);
    text-decoration: none;
}

.contact-value a:hover {
    text-decoration: underline;
}

.contact-cta {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--color-light);
}

.contact-cta p {
    font-size: 18px;
    color: var(--color-dark-2);
    margin-bottom: var(--spacing-md);
}

/* ===================================
   Gallery Section
   =================================== */
.gallery {
    padding: var(--spacing-xxl) 0;
    background: var(--color-white);
    overflow: hidden;
}

.gallery-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 0 calc(-1 * var(--spacing-md));
    padding: 0 var(--spacing-md);
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.gallery-scroll::-webkit-scrollbar {
    display: none;
}

.gallery-track {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
}

.gallery-item {
    flex: 0 0 280px;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.gallery-item:hover {
    transform: translateY(-8px);
}

.gallery-img {
    width: 100%;
    height: 180px;
    border: 1px solid var(--color-gray-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
    transition: border-color 0.3s ease;
}

.gallery-item:hover .gallery-img {
    border-color: var(--color-accent);
}

.gallery-img svg {
    width: 80%;
    height: 80%;
}

.gallery-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gallery-caption {
    display: block;
    font-size: 14px;
    color: var(--color-dark);
    text-align: center;
    font-weight: 500;
}

.gallery-nav {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.gallery-btn {
    width: 48px;
    height: 48px;
    border: 1px solid var(--color-gray-light);
    background: var(--color-white);
    font-size: 24px;
    color: var(--color-dark);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.gallery-btn:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* ===================================
   Lightbox
   =================================== */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 48px;
    height: 48px;
    background: none;
    border: 1px solid var(--color-white);
    color: var(--color-white);
    font-size: 32px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.lightbox-close:hover {
    background: var(--color-white);
    color: var(--color-dark);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 56px;
    height: 56px;
    background: none;
    border: 1px solid var(--color-white);
    color: var(--color-white);
    font-size: 28px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.lightbox-nav:hover {
    background: var(--color-white);
    color: var(--color-dark);
}

.lightbox-nav.prev {
    left: 20px;
}

.lightbox-nav.next {
    right: 20px;
}

.lightbox-content {
    max-width: 80%;
    max-height: 80%;
    text-align: center;
}

.lightbox-img {
    background: var(--color-white);
    padding: 40px;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 400px;
    min-height: 300px;
}

.lightbox-img svg,
.lightbox-img img {
    max-width: 100%;
    max-height: 60vh;
}

.lightbox-caption {
    font-size: 18px;
    color: var(--color-white);
    font-weight: 500;
}

.lightbox-counter {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 14px;
    color: var(--color-gray);
}

/* ===================================
   Footer
   =================================== */
.footer {
    padding: var(--spacing-lg) 0;
    background: var(--color-dark-2);
    border-top: 1px solid var(--color-dark-3);
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.footer-tagline {
    font-size: 13px;
    color: var(--color-gray);
    letter-spacing: 1px;
}

.footer-copy {
    font-size: 13px;
    color: var(--color-gray);
}

/* ===================================
   Responsive
   =================================== */
@media (max-width: 992px) {
    .nav {
        display: none;
    }

    .nav.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--color-white);
        padding: var(--spacing-md);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    }

    .header-right {
        flex-direction: column;
        gap: var(--spacing-sm);
        position: absolute;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--color-white);
        padding: var(--spacing-md);
        display: none;
    }

    .header-right.open {
        display: flex;
    }

    .menu-toggle {
        display: flex;
    }

    .about-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .advantages-grid {
        grid-template-columns: 1fr;
    }

    .advantages-visual {
        grid-template-columns: repeat(3, 1fr);
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-xl: 40px;
        --spacing-xxl: 80px;
    }

    .header-inner {
        height: 64px;
    }

    .logo-text {
        font-size: 20px;
    }

    .hero-title-line {
        letter-spacing: 4px;
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .about-grid {
        grid-template-columns: 1fr 1fr;
    }

    .about-number {
        font-size: 32px;
    }

    .products-grid {
        grid-template-columns: 1fr;
    }

    .advantages-visual {
        grid-template-columns: 1fr 1fr;
    }

    .footer-inner {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .about-grid {
        grid-template-columns: 1fr;
    }

    .about-card {
        padding: var(--spacing-md);
    }

    .advantages-visual {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   Animations
   =================================== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}