/*
Theme Name: NanoBornitride
Description: Bilingual industrial boron nitride catalogue for NanoBorTeX Europe GmbH.
Version: 1.2.0
Requires PHP: 8.3
*/
:root {
    color-scheme: dark;
    --ink: #f4f6f8;
    --muted: #b8c0ca;
    --line: #34373d;
    --paper: #070809;
    --surface: #111418;
    --surface-raised: #171b20;
    --accent: #ff696d;
    --brand: #ed1c24;
    --action: #cf1722;
    --action-hover: #b6111a;
    --accent-surface: #30161b;
    font-family: "Inter", "Instrument Sans", system-ui, sans-serif;
    color: var(--ink);
    background: var(--paper);
    font-synthesis: none;
}
* { box-sizing: border-box; }
body { margin: 0; }
main:has(> .hero) { background: radial-gradient(ellipse at 12% 8%, #211013 0, transparent 37rem); }
a { color: var(--accent); text-underline-offset: .25em; }
a:hover { text-decoration-thickness: .12em; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
p { line-height: 1.65; }
h1, h2, h3, p { margin-block: 0; }
h1, h2, h3 { text-wrap: balance; }
.wrap { width: min(1320px, calc(100% - 96px)); margin-inline: auto; }
.skip-link { position: absolute; left: 1rem; top: 1rem; transform: translateY(-200%); z-index: 9; background: var(--surface); padding: .8rem 1rem; }
.skip-link:focus { transform: none; }
.site-header { background: var(--surface); border-bottom: 1px solid var(--line); }
.header-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 1.2rem; }
.brand { display: inline-flex; align-items: center; color: var(--ink); text-decoration: none; font-size: 1.28rem; font-weight: 760; letter-spacing: -.055em; white-space: nowrap; }
.brand > span:last-child { color: var(--accent); }
.site-nav, .language-nav { display: flex; align-items: center; }
.site-nav { gap: clamp(.8rem, 3vw, 2.8rem); }
.site-nav a, .language-nav a { color: var(--muted); text-decoration: none; font-size: .9rem; font-weight: 630; }
.site-nav a:hover, .site-nav a[aria-current] { color: var(--accent); text-decoration: underline; }
.language-nav { padding: 3px; border: 1px solid var(--line); border-radius: 7px; }
.language-nav a { padding: .4rem .54rem; font-size: .76rem; border-radius: 4px; }
.language-nav a[aria-current] { background: var(--accent-surface); color: var(--accent); }
.hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: stretch; gap: clamp(1.5rem, 4.5vw, 5.5rem); padding-block: clamp(2rem, 5vw, 4.5rem); }
.hero-copy { padding-block: clamp(1rem, 3.5vw, 3.8rem); align-self: center; }
.eyebrow { font-size: .76rem; font-weight: 760; text-transform: uppercase; letter-spacing: .14em; color: var(--accent); margin-bottom: 1.1rem; }
h1 { font-size: clamp(2.35rem, 5.15vw, 5.15rem); font-weight: 690; line-height: 1.02; letter-spacing: -.064em; }
.hero h1 { text-wrap: initial; }
.hero h1 span { display: block; color: var(--accent); }
.lede { max-width: 44ch; font-size: clamp(1rem, 1.55vw, 1.22rem); color: var(--muted); margin-top: 1.3rem; }
.actions { display: flex; align-items: stretch; gap: .65rem; flex-wrap: wrap; margin-top: 1.8rem; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: .55em; min-height: 48px; padding: .72rem .95rem; border: 1px solid transparent; border-radius: 6px; font: inherit; font-size: .9rem; font-weight: 700; text-decoration: none; cursor: pointer; }
.button-primary { background: var(--action); color: white; }
.button-primary:hover { background: var(--action-hover); }
.button-secondary { background: transparent; border-color: #686c75; color: var(--ink); }
.button-secondary:hover { border-color: var(--accent); background: var(--surface-raised); }
.hero-image { position: relative; margin: 0; border-radius: 13px; overflow: hidden; min-height: 335px; background: var(--surface-raised); }
.hero-image img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; filter: saturate(.55); }
.hero-image figcaption { position: absolute; right: .75rem; bottom: .75rem; background: rgba(7, 8, 9, .9); color: var(--ink); padding: .3rem .6rem; border-radius: 4px; font-size: .7rem; }
.facts-bar { background: var(--surface); border-block: 1px solid var(--line); }
.facts { display: grid; grid-template-columns: repeat(3, 1fr); margin-block: 0; padding-block: 1.35rem; }
.facts > div + div { border-left: 1px solid var(--line); padding-left: clamp(.6rem, 4vw, 3.5rem); }
dt { color: var(--muted); font-size: .82rem; font-weight: 590; }
dd { margin: .22rem 0 0; font-size: 1.12rem; font-weight: 680; }
.page-section { padding-block: clamp(2.3rem, 5vw, 4.6rem); }
.interior { min-height: 53vh; }
.interior h1 { font-size: clamp(2.25rem, 4.8vw, 4.1rem); max-width: 25ch; }
.interior > .lede { max-width: 55ch; margin-bottom: 1.8rem; }
h2 { font-size: clamp(1.5rem, 3vw, 2.5rem); font-weight: 690; line-height: 1.15; letter-spacing: -.042em; }
h3 { font-size: 1.1rem; line-height: 1.28; }
.section-heading { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; margin-bottom: 1.45rem; }
.section-heading a { flex: 0 0 auto; font-size: .92rem; font-weight: 640; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr)); gap: .9rem; }
.card, .panel, .request-form { border: 1px solid var(--line); border-radius: 9px; background: var(--surface); }
.card { padding: 1.35rem 1.15rem 1.5rem; }
.card::before { display: block; content: ""; background: var(--brand); width: 24px; height: 3px; border-radius: 2px; margin-bottom: 1rem; }
.card p, .panel p { margin-top: .55rem; color: var(--muted); }
.product-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.panel { padding: clamp(1rem, 2.5vw, 2rem); }
.panel h2 { font-size: 1.55rem; }
.panel h3 { margin-top: 1.4rem; }
.data-table { margin-bottom: 0; }
.data-table div { display: flex; justify-content: space-between; align-items: baseline; gap: .7rem; border-top: 1px solid var(--line); padding: .67rem 0; }
.documents { padding-inline-start: 1.1rem; line-height: 1.8; }
.callout { background: var(--accent-surface); color: var(--ink); border-top: 1px solid #623137; }
.callout-inner { display: flex; justify-content: space-between; align-items: center; gap: 1.5rem; padding-block: 2.3rem; }
.callout p { color: var(--muted); margin-top: .35rem; }
.callout .actions { margin-top: 0; flex-shrink: 0; }
.site-footer { background: var(--surface); color: var(--muted); font-size: .86rem; }
.footer-inner { display: flex; justify-content: space-between; gap: 1rem; padding-block: 1.55rem; }
.footer-inner div { display: flex; gap: 1.2rem; }
.editorial-content:empty { display: none; }
.editorial-content { max-width: 70ch; margin-top: 1.6rem; }
.request-form { max-width: 750px; padding: clamp(1rem, 3vw, 2rem); }
.request-form fieldset { padding: 0; border: 0; margin: 0 0 1.15rem; }
.request-form legend { margin-bottom: .45rem; font-weight: 680; }
.request-type { display: flex; flex-wrap: wrap; gap: .45rem .65rem; }
.request-type label { display: flex; align-items: center; gap: .35rem; padding: .5rem .65rem; border: 1px solid var(--line); border-radius: 5px; }
.request-type label:has(:checked) { border-color: var(--accent); background: var(--accent-surface); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .95rem; }
.form-field { display: grid; gap: .35rem; align-content: start; }
.form-field > span { font-weight: 620; }
.form-wide { grid-column: 1 / -1; }
.request-form :is(input:not([type=radio]), select, textarea) { min-width: 0; width: 100%; font: inherit; color: var(--ink); padding: .65rem; border: 1px solid #727680; border-radius: 5px; background: var(--paper); }
.request-form textarea { resize: vertical; }
.request-form input[type=radio] { accent-color: var(--accent); }
.form-sample, .form-privacy { font-size: .9rem; color: var(--muted); margin: .85rem 0; }
.form-trap, [hidden] { display: none !important; }
.form-message { max-width: 750px; padding: .8rem 1rem; margin-bottom: 1rem; border: 1px solid #538172; border-radius: 5px; background: #17332b; }
.form-error { border-color: #a1444b; background: var(--accent-surface); color: #ffc6c8; }
@media (max-width: 950px) {
    .wrap { width: calc(100% - 56px); }
    .callout-inner { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 740px) {
    .wrap { width: calc(100% - 36px); }
    .header-inner { flex-wrap: wrap; gap: .6rem; padding-block: .75rem; }
    .site-nav { flex: 1 0 100%; order: 3; justify-content: space-between; gap: .65rem; padding-block: .3rem; }
    .site-nav a { font-size: .84rem; }
    .hero { grid-template-columns: 1fr; gap: 1.15rem; padding-block: 1.3rem 1.8rem; }
    .hero-copy { padding-block: .6rem; }
    .hero-image { min-height: 0; aspect-ratio: 3 / 2; }
    .section-heading { flex-wrap: wrap; }
    .product-grid, .form-grid { grid-template-columns: 1fr; }
    .facts { padding-block: 1rem; }
    .facts dt { font-size: .74rem; }
    .facts dd { font-size: .88rem; }
}
@media (max-width: 370px) {
    .wrap { width: calc(100% - 26px); }
    .actions > a { width: 100%; }
    .footer-inner { flex-wrap: wrap; }
}

.card h3 a { color: var(--ink); text-decoration: none; }
.card h3 a:hover, .sourcing h2 a:hover { color: var(--accent); text-decoration: underline; }
.card h3 a span, .sourcing h2 a span { color: var(--accent); }
.workflow-band { background: var(--surface-raised); color: var(--ink); border-block: 1px solid var(--line); }
.workflow { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(1rem, 4vw, 3rem); padding: 0; margin: 1.7rem 0 0; list-style: none; counter-reset: workflow; }
.workflow li { border-top: 1px solid #555862; padding-top: 1.15rem; counter-increment: workflow; }
.workflow li::before { content: counter(workflow, decimal-leading-zero); display: block; font-variant-numeric: tabular-nums; color: var(--accent); font-size: .85rem; font-weight: 730; margin-bottom: .65rem; }
.workflow p { color: var(--muted); margin-top: .48rem; }
.sourcing { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); align-items: center; gap: clamp(1.25rem, 5vw, 5rem); }
.sourcing:not(:has(.lab-image)) { grid-template-columns: minmax(0, 1fr); }
.lab-image { margin: 0; position: relative; }
.lab-image img { width: 100%; height: auto; display: block; border-radius: 9px; filter: saturate(.6); }
.lab-image figcaption { font-size: .72rem; color: var(--muted); margin-top: .45rem; }
.sourcing-content { display: grid; gap: 1.05rem; }
.sourcing-content > div + div { border-top: 1px solid var(--line); padding-top: 1.05rem; }
.sourcing-content h2 { font-size: clamp(1.35rem, 2.4vw, 2rem); }
.sourcing-content h2 a { color: var(--ink); text-decoration: none; }
.sourcing-content p { margin-top: .35rem; color: var(--muted); }
.detail-section { margin-top: clamp(1.7rem, 4vw, 3.4rem); }
.detail-section > h2 { margin-bottom: 1rem; }
.editorial-section { max-width: 72ch; margin-bottom: 1.7rem; }
.editorial-section h2 { font-size: clamp(1.3rem, 2.5vw, 1.85rem); }
.editorial-section p { margin: .55rem 0; color: var(--muted); }
.checklist { background: var(--surface-raised); border: 1px solid var(--line); border-radius: 8px; padding: clamp(1rem, 3vw, 2rem); }
.checklist ul, .evaluation ul, .guide-content ul { padding-left: 1.25rem; line-height: 1.8; }
.faq { max-width: 800px; }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; padding: .85rem 0; font-weight: 650; }
.faq details p { padding: 0 0 .85rem 1rem; color: var(--muted); }
.application-links { display: flex; flex-wrap: wrap; gap: .55rem; margin-bottom: 1.3rem; }
.application-links a { background: var(--accent-surface); border-radius: 5px; padding: .5rem .7rem; font-size: .88rem; font-weight: 650; }
.application-section { scroll-margin-top: 1.2rem; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, .8fr); align-items: start; gap: clamp(1rem, 5vw, 4rem); border-top: 1px solid var(--line); padding-block: 1.6rem; }
.application-section p { margin-top: .6rem; color: var(--muted); }
.evaluation { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 1rem 1.2rem; }
.evaluation ul { margin: .45rem 0 0; }
.guide-content { max-width: 800px; }
.guide-content .editorial-section + .editorial-section { border-top: 1px solid var(--line); padding-top: 1.45rem; }
.inquiry-layout { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); gap: 1rem; align-items: start; max-width: 1110px; }
.inquiry-help section + section { border-top: 1px solid var(--line); padding-top: 1rem; margin-top: 1rem; }
.inquiry-help h2 { font-size: 1.22rem; }
@media (max-width: 850px) {
    .site-nav { flex-wrap: wrap; row-gap: .5rem; }
}
@media (max-width: 740px) {
    .workflow, .sourcing, .application-section, .inquiry-layout { grid-template-columns: 1fr; }
    .workflow { gap: 1.3rem; }
}
@media (max-width: 470px) {
    .site-nav { justify-content: flex-start; column-gap: .9rem; }
    .site-nav a { padding-block: .16rem; }
}