/* Navigation tabs, language toggle, product pages and catalog viewer */

.nav-container { gap: 20px; }
.main-nav { flex: 1; display: flex; justify-content: center; }
.nav-tabs { display: flex; gap: 6px; }
.nav-tabs a {
    display: block;
    padding: 10px 16px;
    border-radius: 50px;
    color: var(--silver);
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    white-space: nowrap;
}
.nav-tabs a:hover { color: var(--white); background: rgba(255, 255, 255, 0.08); }
.nav-tabs a.active { color: var(--white); background: var(--accent-blue); }
.nav-actions { display: flex; align-items: center; gap: 14px; }

.lang-toggle {
    display: inline-flex;
    border: 1px solid rgba(211, 217, 226, 0.4);
    border-radius: 50px;
    overflow: hidden;
}
.lang-toggle button {
    background: transparent;
    border: 0;
    color: var(--silver);
    font: 600 0.85rem 'Poppins', sans-serif;
    padding: 7px 12px;
    cursor: pointer;
    transition: var(--transition);
}
.lang-toggle button.active { background: var(--white); color: var(--primary-blue); }

/* Inner page hero */
.page-hero {
    position: relative;
    padding: 190px 0 80px;
    color: var(--white);
    background: url('../images/hero-bg.jpg') center/cover no-repeat;
}
.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(2, 8, 59, 0.96) 0%, rgba(2, 8, 59, 0.8) 60%, rgba(2, 8, 59, 0.55) 100%);
}
.page-hero .container { position: relative; z-index: 1; max-width: 1200px; }
.page-hero h1 { font-size: 3rem; font-weight: 800; line-height: 1.15; margin-bottom: 18px; max-width: 800px; }
.page-hero p { font-size: 1.15rem; color: var(--silver); max-width: 760px; font-weight: 300; }

/* Filter tabs */
.filter-tabs {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-bottom: 45px;
}
.filter-tabs button {
    border: 1px solid #d8dee8;
    background: var(--white);
    color: var(--primary-blue);
    font: 600 0.95rem 'Poppins', sans-serif;
    padding: 10px 22px;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
}
.filter-tabs button:hover { border-color: var(--accent-blue); }
.filter-tabs button.active { background: var(--primary-blue); border-color: var(--primary-blue); color: var(--white); }

/* Product cards */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 28px;
}
.product-card {
    background: var(--white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.product-card[hidden] { display: none; }
.product-media { aspect-ratio: 4 / 3; background: #eef3f8; overflow: hidden; }
.product-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.product-card:hover .product-media img { transform: scale(1.05); }
.product-placeholder {
    width: 100%; height: 100%;
    display: grid; place-items: center;
    background: linear-gradient(135deg, var(--primary-blue), #173e6b);
    color: var(--accent-blue); font-size: 4rem;
}
.product-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.product-series {
    align-self: flex-start;
    background: rgba(0, 120, 255, 0.1);
    color: var(--accent-blue);
    font-weight: 700;
    font-size: 0.8rem;
    letter-spacing: 0.5px;
    padding: 5px 12px;
    border-radius: 50px;
    margin-bottom: 12px;
}
.product-body h3 { font-size: 1.25rem; color: var(--primary-blue); margin-bottom: 10px; line-height: 1.3; }
.product-body p { color: var(--text-light); font-size: 0.95rem; flex: 1; }
.product-actions { display: flex; gap: 18px; margin-top: 20px; padding-top: 16px; border-top: 1px solid #eef1f5; flex-wrap: wrap; }
.btn-link {
    background: none; border: 0; padding: 0; cursor: pointer;
    font: 600 0.9rem 'Poppins', sans-serif;
    color: var(--accent-blue);
    display: inline-flex; align-items: center; gap: 7px;
}
.btn-link:hover { color: var(--primary-blue); }

/* Product line cards (home) */
.lines-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.line-card {
    position: relative;
    border-radius: 18px;
    overflow: hidden;
    min-height: 420px;
    display: flex;
    align-items: flex-end;
    color: var(--white);
    box-shadow: var(--shadow-md);
}
.line-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.line-card::before { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(2, 8, 59, 0.95) 15%, rgba(2, 8, 59, 0.1) 70%); z-index: 1; }
.line-card:hover img { transform: scale(1.06); }
.line-card .line-body { position: relative; z-index: 2; padding: 30px; }
.line-card h3 { font-size: 1.6rem; margin-bottom: 8px; }
.line-card p { color: var(--silver); font-size: 0.95rem; margin-bottom: 16px; }
.line-card .more { color: #80bfff; font-weight: 600; }

/* Product types (home) */
.types-section { background: var(--bg-light); }
.types-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }
.type-item { background: var(--white); border-radius: 14px; padding: 26px; box-shadow: var(--shadow-sm); border-left: 4px solid var(--accent-blue); }
.type-item h4 { color: var(--primary-blue); font-size: 1.05rem; margin-bottom: 8px; }
.type-item p { color: var(--text-light); font-size: 0.9rem; }

/* Why choose */
.why-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 22px; }
.why-item { text-align: center; padding: 26px 18px; }
.why-item i {
    width: 64px; height: 64px; border-radius: 50%;
    display: inline-grid; place-items: center;
    background: rgba(0, 120, 255, 0.1); color: var(--accent-blue);
    font-size: 1.6rem; margin-bottom: 16px;
}
.why-item h4 { color: var(--primary-blue); margin-bottom: 6px; }
.why-item p { color: var(--text-light); font-size: 0.9rem; }

/* Split callout */
.callout { background: linear-gradient(135deg, var(--primary-blue), #173e6b); color: var(--white); border-radius: 20px; padding: 50px; display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; align-items: center; }
.callout h2 { font-size: 2rem; margin-bottom: 14px; }
.callout p { color: var(--silver); }
.callout .callout-actions { display: flex; flex-direction: column; gap: 14px; }

/* Catalog cards */
.catalog-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.catalog-card { background: var(--white); border-radius: 20px; overflow: hidden; box-shadow: var(--shadow-md); display: flex; flex-direction: column; }
.catalog-card img { width: 100%; height: 380px; object-fit: cover; background: var(--primary-blue); cursor: pointer; }
.catalog-body { padding: 28px; display: flex; flex-direction: column; flex: 1; }
.catalog-body h3 { color: var(--primary-blue); font-size: 1.5rem; margin-bottom: 6px; }
.catalog-meta { color: var(--accent-blue); font-weight: 600; font-size: 0.85rem; margin-bottom: 12px; }
.catalog-body p { color: var(--text-light); flex: 1; margin-bottom: 22px; }
.catalog-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn-light { background: rgba(0, 120, 255, 0.1); color: var(--accent-blue); }
.btn-light:hover { background: rgba(0, 120, 255, 0.18); }

/* Catalog viewer */
.catalog-viewer { position: fixed; inset: 0; background: rgba(1, 4, 31, 0.95); z-index: 3000; overflow: auto; padding: 80px 12px 30px; }
.catalog-viewer[hidden] { display: none; }
.cv-top {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1;
    background: var(--primary-blue);
    padding: 12px 20px;
    display: flex; justify-content: space-between; align-items: center; gap: 12px;
    color: var(--white);
}
.cv-actions { display: flex; gap: 10px; }
.cv-btn {
    border: 0; border-radius: 8px; padding: 9px 14px;
    font: 600 0.9rem 'Poppins', sans-serif; cursor: pointer;
    background: var(--white); color: var(--primary-blue);
    display: inline-flex; align-items: center; gap: 6px;
}
.cv-pages { max-width: 1000px; margin: 0 auto; }
.cv-pages img { display: block; width: 100%; height: auto; margin: 0 auto 18px; background: var(--white); box-shadow: 0 3px 16px rgba(0, 0, 0, 0.35); }

/* Quote form */
.quote-section { background: linear-gradient(135deg, var(--primary-blue), #173e6b); color: var(--white); }
.quote-section .section-title { color: var(--white); }
.quote-section .section-subtitle { color: var(--silver); }
.quote-form { background: var(--white); color: var(--text-dark); padding: 34px; border-radius: 20px; max-width: 780px; margin: 0 auto; box-shadow: var(--shadow-lg); }
.form-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-fields .full { grid-column: 1 / -1; }
.quote-form label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 6px; color: var(--primary-blue); }
.quote-form input, .quote-form select, .quote-form textarea {
    width: 100%; padding: 13px 14px; border: 1px solid #d8dee8; border-radius: 8px; font: inherit;
}
.quote-form textarea { min-height: 110px; resize: vertical; }
.quote-form button { width: 100%; justify-content: center; border: 0; cursor: pointer; font-family: inherit; }

.footer-links a i { width: 18px; color: var(--accent-blue); }

@media (max-width: 1100px) {
    .nav-tabs a { padding: 8px 11px; font-size: 0.88rem; }
    .nav-quote span { display: none; }
}

@media (max-width: 992px) {
    .lines-grid { grid-template-columns: 1fr; }
    .line-card { min-height: 320px; }
    .callout { grid-template-columns: 1fr; padding: 34px; }
    .catalog-grid { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
    .nav-container { flex-wrap: wrap; height: auto !important; padding: 12px 16px; row-gap: 6px; }
    header.scrolled .nav-container { padding: 10px 16px; }
    .logo img, header.scrolled .logo img { height: 60px; }
    .main-nav { order: 3; flex-basis: 100%; overflow-x: auto; justify-content: flex-start; scrollbar-width: none; }
    .main-nav::-webkit-scrollbar { display: none; }
    .nav-tabs { margin: 0 auto; }
    header { background: var(--glass-bg); }
    .page-hero { padding-top: 170px; }
    .page-hero h1 { font-size: 2.1rem; }
}

@media (max-width: 576px) {
    .nav-container { flex-direction: row !important; justify-content: space-between !important; }
    .product-grid { grid-template-columns: 1fr; }
    .form-fields { grid-template-columns: 1fr; }
    .quote-form { padding: 22px; }
    .catalog-card img { height: 260px; }
    .cv-btn span { display: none; }
    .cv-top strong { font-size: 0.9rem; }
}

/* Without JavaScript nothing triggers the scroll reveal, so keep content visible. */
html:not(.js) .reveal { opacity: 1; transform: none; }