:root {
    --color-bg: #faf8f5;
    --color-surface: #ffffff;
    --color-text: #2a2420;
    --color-text-muted: #6b6259;
    --color-border: #e6e0d8;
    --color-primary: #8a5a34;
    --color-primary-dark: #6e4527;
    --color-accent: #c98f4e;
    --radius: 10px;
    --radius-btn: 999px;
    --shadow: 0 2px 10px rgba(40, 30, 20, 0.06);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: "Segoe UI", Arial, sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.55;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container {
    max-width: 1160px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.site-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-primary-dark);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.6rem;
    cursor: pointer;
    color: var(--color-primary-dark);
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 28px;
}

.main-nav > a {
    font-weight: 600;
    color: var(--color-text);
    padding: 8px 0;
}

.main-nav > a:hover { color: var(--color-primary); }

.nav-cta {
    background: var(--color-primary);
    color: #fff !important;
    padding: 10px 18px !important;
    border-radius: var(--radius-btn);
}

.nav-cta:hover { background: var(--color-primary-dark); }

.nav-dropdown { position: relative; }

.nav-dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    min-width: 220px;
    padding: 8px;
    flex-direction: column;
}

.nav-dropdown:hover .nav-dropdown-menu { display: flex; }

.nav-dropdown-menu a {
    padding: 8px 12px;
    border-radius: 6px;
    color: var(--color-text);
}

.nav-dropdown-menu a:hover,
.nav-dropdown-menu a.active {
    background: var(--color-bg);
    color: var(--color-primary);
}

/* Hero carousel */
.hero-carousel {
    position: relative;
    overflow: hidden;
    height: 440px;
}

.hero-slide {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity .7s ease;
    padding: 40px 20px;
}

.hero-slide.active { opacity: 1; visibility: visible; }

.hero-slide.grad-1 { background: linear-gradient(135deg, #8a5a34, #c98f4e); }
.hero-slide.grad-2 { background: linear-gradient(135deg, #6e4527, #a06b3f); }
.hero-slide.grad-3 { background: linear-gradient(135deg, #4f3822, #8a5a34); }
.hero-slide.grad-4 { background: linear-gradient(135deg, #9c6b3e, #d9ab6f); }

.hero-slide img.hero-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.hero-slide .hero-overlay {
    position: absolute;
    inset: 0;
    background: rgba(30, 20, 10, 0.35);
    z-index: 1;
}

.hero-slide-content {
    position: relative;
    z-index: 2;
    color: #fff;
    max-width: 680px;
}

.hero-slide-content h1 {
    font-size: 2.1rem;
    margin: 0 0 14px;
}

.hero-slide-content p {
    font-size: 1.1rem;
    opacity: .95;
    margin: 0 0 24px;
}

.hero-dots {
    position: absolute;
    bottom: 18px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    gap: 8px;
    z-index: 3;
}

.hero-dots button {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 2px solid #fff;
    background: transparent;
    cursor: pointer;
    padding: 0;
}

.hero-dots button.active { background: #fff; }

.hero-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.25);
    border: none;
    color: #fff;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 1.3rem;
    cursor: pointer;
    z-index: 3;
}

.hero-arrow:hover { background: rgba(255,255,255,0.45); }
.hero-arrow.prev { left: 16px; }
.hero-arrow.next { right: 16px; }

@media (max-width: 720px) {
    .hero-carousel { height: 380px; }
    .hero-slide-content h1 { font-size: 1.5rem; }
}

.btn {
    display: inline-block;
    padding: 12px 26px;
    border-radius: var(--radius-btn);
    font-weight: 600;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
}

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

.btn-outline {
    background: transparent;
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
}

/* Sections */
.section {
    padding: 56px 0;
}

.section-title {
    text-align: center;
    font-size: 1.7rem;
    margin: 0 0 8px;
    color: var(--color-primary-dark);
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-muted);
    margin: 0 0 36px;
}

/* Category tiles */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.category-tile {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 28px 18px;
    text-align: center;
    font-weight: 600;
    box-shadow: var(--shadow);
    transition: transform .15s ease;
}

.category-tile:hover { transform: translateY(-4px); color: var(--color-primary); }

.category-tile .icon { font-size: 2rem; display: block; margin-bottom: 10px; }

.category-tile-img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: var(--radius);
    margin-bottom: 10px;
}

/* Product grid & cards */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
    gap: 24px;
}

.product-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
}

.product-card .thumb {
    aspect-ratio: 4 / 3;
    background: #f1ece4;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    overflow: hidden;
}

.product-card .thumb img { width: 100%; height: 100%; object-fit: cover; }

.img-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #efe6da, #e2d4c2);
}

.img-placeholder span { font-size: 2.6rem; opacity: .75; }

.product-gallery-main .img-placeholder span { font-size: 4rem; }

.product-card .body { padding: 16px; flex: 1; display: flex; flex-direction: column; }

.product-card h3 { margin: 0 0 6px; font-size: 1.05rem; }

.product-card .cat-label { color: var(--color-text-muted); font-size: .85rem; margin-bottom: 10px; }

.product-card .btn { margin-top: auto; text-align: center; }

/* Product detail */
.product-detail { display: grid; grid-template-columns: 1.1fr 1fr; gap: 40px; }

.product-gallery-main {
    aspect-ratio: 4 / 3;
    background: #f1ece4;
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
}

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

.product-gallery-thumbs { display: flex; gap: 10px; margin-top: 12px; flex-wrap: wrap; }

.product-gallery-thumbs img {
    width: 72px; height: 72px; object-fit: cover; border-radius: 6px;
    cursor: pointer; border: 2px solid transparent;
}

.product-gallery-thumbs img.active { border-color: var(--color-primary); }

.specs-box {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 20px;
    white-space: pre-line;
    color: var(--color-text-muted);
    margin-top: 16px;
}

.breadcrumb { color: var(--color-text-muted); margin-bottom: 20px; font-size: .9rem; }
.breadcrumb a { color: var(--color-primary); }

/* Partners / certificates */
.logo-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 28px;
    align-items: center;
    justify-content: center;
}

/* Partners marquee carousel (pure CSS, no JS required) */
.partners-carousel {
    overflow: hidden;
    position: relative;
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
    mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.partners-track {
    display: flex;
    gap: 28px;
    width: max-content;
    animation: partners-scroll 30s linear infinite;
}

.partners-carousel:hover .partners-track { animation-play-state: paused; }

@keyframes partners-scroll {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

.logo-strip .logo-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 14px 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 70px;
}

.logo-strip img { max-height: 48px; max-width: 140px; }

.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 20px;
}

.cert-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 12px;
    text-align: center;
    box-shadow: var(--shadow);
}

.cert-item img { border-radius: 6px; margin-bottom: 8px; aspect-ratio: 3/4; object-fit: cover; }

/* Forms */
.form-box {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 28px;
    max-width: 560px;
    margin: 0 auto;
    box-shadow: var(--shadow);
}

.form-group { margin-bottom: 16px; }

.form-group label { display: block; font-weight: 600; margin-bottom: 6px; font-size: .95rem; }

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-family: inherit;
    font-size: 1rem;
}

.form-group textarea { min-height: 120px; resize: vertical; }

.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 18px;
}

.alert-success { background: #e6f4ea; color: #1e6b3a; }
.alert-error { background: #fbe7e7; color: #a12a2a; }

.contact-info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

/* Footer */
.site-footer {
    background: #241d17;
    color: #ece5db;
    margin-top: 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    padding: 48px 0 24px;
}

.footer-col h3 { color: #fff; margin-top: 0; }
.footer-col p { color: #cabfae; margin: 6px 0; }
.footer-col a:hover { color: #fff; }
.footer-social a { margin-right: 14px; }

.footer-bottom {
    border-top: 1px solid #3a3128;
    padding: 16px 0;
    font-size: .85rem;
    color: #a89a86;
}

/* Company profile (about) section */
.about-section {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
}

.about-intro { max-width: 780px; margin: 0 auto 36px; text-align: center; color: var(--color-text-muted); white-space: pre-line; }

.about-vm-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 36px;
}

.about-vm-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 24px;
}

.about-vm-card h3 { margin-top: 0; color: var(--color-primary-dark); }

.about-list-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.about-list-card h3 {
    color: var(--color-primary-dark);
    font-size: 1.05rem;
    margin-bottom: 12px;
}

.about-list-card ul { list-style: none; margin: 0; padding: 0; }

.about-list-card li {
    padding: 6px 0 6px 26px;
    position: relative;
    color: var(--color-text-muted);
}

.about-list-card li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: 700;
}

@media (max-width: 720px) {
    .about-vm-grid { grid-template-columns: 1fr; }
}

/* Utility */
.text-center { text-align: center; }
.mt-24 { margin-top: 24px; }
.empty-state { text-align: center; color: var(--color-text-muted); padding: 40px 0; }

@media (max-width: 860px) {
    .product-detail { grid-template-columns: 1fr; }
    .contact-info-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
    .nav-toggle { display: block; }
    .main-nav {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--color-surface);
        flex-direction: column;
        align-items: flex-start;
        padding: 16px 20px;
        border-bottom: 1px solid var(--color-border);
        gap: 12px;
    }
    .main-nav.open { display: flex; }
    .nav-dropdown-menu { position: static; box-shadow: none; border: none; display: flex; }
    .nav-dropdown:hover .nav-dropdown-menu { display: flex; }
}