/* =====================================================================
   BigBrainSystems — style.css
   Layout & componenten. Theme-onafhankelijk: alle kleuren via tokens.
   ===================================================================== */

/* ============ HEADER / NAV ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.site-header.is-stuck { border-bottom-color: var(--header-border); }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: 76px;
}

/* Brand wordmark */
.brand { display: inline-flex; align-items: center; gap: 0.7rem; flex-shrink: 0; }
.brand__logo { height: 40px; width: auto; display: block; }
.brand__mark {
  width: 38px; height: 38px;
  border-radius: 11px;
  display: grid; place-items: center;
  background:
    radial-gradient(120% 120% at 30% 20%, var(--bbs-orange-300), var(--bbs-orange) 45%, var(--bbs-orange-600) 100%);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  box-shadow: 0 6px 18px -6px var(--accent-glow), inset 0 1px 0 rgba(255,255,255,0.4);
  position: relative;
  overflow: hidden;
}
.brand__mark::after {
  /* subtiel circuit-detail */
  content: "";
  position: absolute; inset: 0;
  background:
    linear-gradient(90deg, transparent 49%, rgba(255,255,255,0.25) 50%, transparent 51%) center/7px 100%,
    radial-gradient(circle at 78% 72%, rgba(255,255,255,0.6) 0 1.6px, transparent 2px);
  opacity: 0.5;
  mix-blend-mode: overlay;
}
.brand__word {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.12rem;
  letter-spacing: -0.02em;
  color: var(--text-strong);
  white-space: nowrap;
}

/* Nav-links */
.nav__links {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin-inline: auto;
}
.nav__link {
  padding: 0.5rem 0.6rem;
  border-radius: var(--radius-pill);
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.93rem;
  white-space: nowrap;
  position: relative;
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}
.nav__link:hover { color: var(--text-strong); background: var(--surface-2); }
.nav__link.is-active { color: var(--accent-strong); }
.nav__link.is-active::after {
  content: ""; position: absolute; left: 50%; bottom: 2px;
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--accent); transform: translateX(-50%);
}

.nav__actions { display: flex; align-items: center; gap: 0.6rem; flex-shrink: 0; }

/* Taal-toggle */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-pill);
  padding: 3px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
}
.lang-toggle button {
  padding: 0.28rem 0.45rem;
  border-radius: var(--radius-pill);
  color: var(--text-muted);
  letter-spacing: 0.05em;
  transition: color 0.2s, background 0.2s;
}
.lang-toggle button[aria-pressed="true"] { background: var(--accent); color: #fff; }

/* Hamburger */
.nav__burger {
  display: none;
  width: 42px; height: 42px;
  border-radius: 11px;
  border: 1px solid var(--border-strong);
  align-items: center; justify-content: center;
}
.nav__burger span, .nav__burger span::before, .nav__burger span::after {
  content: ""; display: block;
  width: 18px; height: 2px; border-radius: 2px;
  background: var(--text-strong);
  transition: transform 0.3s var(--ease), opacity 0.2s;
}
.nav__burger span::before { transform: translateY(-6px); }
.nav__burger span::after  { transform: translateY(6px); }
.nav__burger span { position: relative; }
.nav.is-open .nav__burger span { background: transparent; }
.nav.is-open .nav__burger span::before { transform: rotate(45deg); }
.nav.is-open .nav__burger span::after  { transform: rotate(-45deg); }

/* ============ HERO ============ */
.hero { position: relative; overflow: hidden; padding-block: clamp(4rem, 11vw, 8.5rem); }
.hero__bg {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(40rem 30rem at 78% -10%, var(--hero-glow-1), transparent 60%),
    radial-gradient(34rem 28rem at 8% 110%, var(--hero-glow-2), transparent 60%);
}
.hero__bg::before {
  /* technische grid-laag */
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--hero-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--hero-grid) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(120% 90% at 50% 0%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(120% 90% at 50% 0%, #000 30%, transparent 80%);
}
.hero .container { position: relative; z-index: 1; }

.hero__grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}
.hero__title { margin-top: 1.1rem; }
.hero__title .grad {
  background: linear-gradient(100deg, var(--bbs-orange-300), var(--bbs-orange));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero__lead { margin-top: 1.4rem; }
.hero__cta { margin-top: 2.2rem; display: flex; flex-wrap: wrap; gap: 0.9rem; }
.hero__stats {
  margin-top: 2.8rem;
  display: flex; flex-wrap: wrap; gap: 2.2rem;
  padding-top: 1.8rem; border-top: 1px solid var(--border);
}
.hero__stat .num {
  font-family: var(--font-display); font-weight: 800;
  font-size: 1.9rem; color: var(--text-strong); line-height: 1;
}
.hero__stat .lbl { font-size: 0.85rem; color: var(--text-muted); margin-top: 0.3rem; }

/* Hero visual: logo in glas-paneel met orbit */
.hero__visual { position: relative; display: grid; place-items: center; min-height: 360px; }
.hero__panel {
  position: relative;
  width: min(420px, 100%);
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 120% at 70% 0%, rgba(237,125,28,0.14), transparent 55%),
    var(--ink);
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255,255,255,0.06);
  display: grid; place-items: center;
  overflow: hidden;
}
.hero__panel::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(circle at 50% 50%, #000, transparent 75%);
  -webkit-mask-image: radial-gradient(circle at 50% 50%, #000, transparent 75%);
}
.hero__logo { width: 72%; position: relative; z-index: 1; filter: drop-shadow(0 20px 40px rgba(0,0,0,0.5)); }
.hero__ring {
  position: absolute; border-radius: 50%;
  border: 1px dashed rgba(237,125,28,0.4);
  animation: spin 26s linear infinite;
}
.hero__ring--1 { inset: 8%; }
.hero__ring--2 { inset: 20%; border-color: rgba(43,182,196,0.35); animation-duration: 18s; animation-direction: reverse; }
.hero__chip {
  position: absolute; z-index: 2;
  font-family: var(--font-mono); font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.05em;
  background: var(--surface-glass);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-strong);
  color: var(--text-strong);
  padding: 0.45rem 0.8rem; border-radius: var(--radius-pill);
  box-shadow: var(--shadow-md);
}
.hero__chip svg { width: 0.95rem; height: 0.95rem; display: inline; vertical-align: -2px; margin-right: 0.35em; }
.hero__chip--a { top: 8%; right: 2%; color: var(--bbs-orange); }
.hero__chip--b { bottom: 11%; left: 2%; color: var(--em-teal-2); }
@keyframes spin { to { transform: rotate(360deg); } }

/* ============ SECTIE-KOP ============ */
.sec-head { max-width: 60ch; margin-bottom: clamp(2.2rem, 4vw, 3.4rem); }
.sec-head h2 { margin-top: 0.8rem; }
.sec-head.center { margin-inline: auto; text-align: center; }
.sec-head.center .eyebrow { justify-content: center; }

/* ============ PRODUCT-KAARTEN ============ */
.tint { background: var(--bg-tint); }
.products { display: grid; grid-template-columns: repeat(2, 1fr); gap: clamp(1.2rem, 2.5vw, 1.8rem); }
.pcard {
  position: relative;
  padding: clamp(1.6rem, 3vw, 2.4rem);
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease), border-color 0.4s var(--ease);
}
.pcard::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 4px;
  background: var(--pc-accent, var(--accent));
  transform: scaleX(0); transform-origin: left; transition: transform 0.5s var(--ease);
}
.pcard:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: color-mix(in srgb, var(--pc-accent, var(--accent)) 40%, var(--border)); }
.pcard:hover::before { transform: scaleX(1); }
.pcard--em { --pc-accent: var(--em-teal-2); }

.pcard__icon {
  width: 56px; height: 56px; border-radius: 15px;
  display: grid; place-items: center;
  background: var(--pc-soft, var(--accent-soft));
  color: var(--pc-accent, var(--accent));
  margin-bottom: 1.3rem;
}
.pcard--em .pcard__icon { --pc-soft: rgba(43,182,196,0.12); }
.pcard__icon svg, .pcard__icon img { width: 30px; height: 30px; }
.pcard__tag {
  font-family: var(--font-mono); font-size: 0.68rem; font-weight: 600;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--pc-accent, var(--accent));
}
.pcard h3 { margin: 0.5rem 0 0.7rem; }
.pcard p { margin-bottom: 1.4rem; }
.pcard__link {
  display: inline-flex; align-items: center; gap: 0.45em;
  font-family: var(--font-display); font-weight: 600; font-size: 0.96rem;
  color: var(--pc-accent, var(--accent));
}
.pcard__link svg { width: 1em; height: 1em; transition: transform 0.25s var(--ease); }
.pcard:hover .pcard__link svg { transform: translateX(5px); }

/* ============ FEATURES / WAAROM ============ */
.features { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(1rem, 2vw, 1.6rem); }
.feature {
  padding: 1.6rem 1.4rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}
.feature:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.feature__ic {
  width: 46px; height: 46px; border-radius: 12px; margin-bottom: 1rem;
  display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent);
}
.feature__ic svg { width: 24px; height: 24px; }
.feature h3 { font-size: 1.12rem; margin-bottom: 0.4rem; }
.feature p { font-size: 0.95rem; }

/* ============ CTA-BAND ============ */
.cta-band { position: relative; }
.cta-band__inner {
  position: relative; overflow: hidden;
  border-radius: var(--radius-lg);
  padding: clamp(2.4rem, 5vw, 4rem);
  background:
    radial-gradient(60% 120% at 100% 0%, rgba(237,125,28,0.5), transparent 60%),
    radial-gradient(60% 120% at 0% 100%, rgba(43,182,196,0.4), transparent 60%),
    var(--ink);
  color: #fff;
  box-shadow: var(--shadow-lg);
  display: grid; grid-template-columns: 1.4fr auto; align-items: center; gap: 2rem;
}
.cta-band__inner::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(100% 100% at 80% 0%, #000, transparent 75%);
  -webkit-mask-image: radial-gradient(100% 100% at 80% 0%, #000, transparent 75%);
}
.cta-band h2, .cta-band p { color: #fff; position: relative; }
.cta-band p { color: rgba(255,255,255,0.82); margin-top: 0.7rem; max-width: 46ch; }
.cta-band__actions { position: relative; display: flex; flex-wrap: wrap; gap: 0.8rem; }
.cta-band .btn--ghost { --btn-fg: #fff; border-color: rgba(255,255,255,0.4); }
.cta-band .btn--ghost:hover { background: rgba(255,255,255,0.12); border-color: #fff; }

/* ============ CONTACT-FORMULIER ============ */
.contact-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: clamp(2rem, 4vw, 3.5rem); align-items: start; }
.contact-info .ci-item { display: flex; gap: 0.9rem; margin-top: 1.6rem; }
.contact-info .ci-item svg { width: 22px; height: 22px; color: var(--accent); flex-shrink: 0; margin-top: 3px; }
.contact-info .ci-item h4 { font-family: var(--font-display); font-size: 1rem; color: var(--text-strong); }
.contact-info .ci-item p { font-size: 0.95rem; margin: 0; }

.form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(1.6rem, 3vw, 2.4rem);
  box-shadow: var(--shadow-md);
}
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.field { margin-bottom: 1.1rem; display: flex; flex-direction: column; gap: 0.4rem; }
.field label {
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--text-muted); font-weight: 600;
}
.field input, .field textarea, .field select {
  width: 100%;
  padding: 0.85rem 1rem;
  font: inherit; font-size: 0.98rem;
  color: var(--text-strong);
  background: var(--bg);
  border: 1.5px solid var(--border-strong);
  border-radius: 12px;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}
.field textarea { resize: vertical; min-height: 130px; }
.field input::placeholder, .field textarea::placeholder { color: color-mix(in srgb, var(--text-muted) 75%, transparent); }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}
.field.invalid input, .field.invalid textarea {
  border-color: #e0413e; box-shadow: 0 0 0 4px rgba(224,65,62,0.12);
}
.field__err {
  font-size: 0.8rem; color: #e0413e; min-height: 1em;
  opacity: 0; transform: translateY(-3px); transition: opacity 0.2s, transform 0.2s;
}
.field.invalid .field__err { opacity: 1; transform: none; }
.form__submit { width: 100%; justify-content: center; margin-top: 0.4rem; }
.form__note { font-size: 0.82rem; color: var(--text-muted); text-align: center; margin-top: 0.9rem; }

.form__success {
  display: none;
  text-align: center; padding: 2.5rem 1rem;
}
.form__success svg { width: 60px; height: 60px; color: var(--em-teal); margin: 0 auto 1rem; }
.form.is-sent .form__body { display: none; }
.form.is-sent .form__success { display: block; animation: pop 0.5s var(--ease); }
@keyframes pop { from { opacity: 0; transform: scale(0.92); } to { opacity: 1; transform: none; } }

/* ============ FOOTER ============ */
.site-footer { background: var(--ink); color: var(--silver); padding-top: clamp(3rem, 6vw, 5rem); }
.site-footer .container { position: relative; }
.footer__top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 2rem; padding-bottom: 2.5rem; }
.footer__brand .footer__logo { width: 168px; margin-bottom: 1rem; }
.footer__brand p { color: rgba(255,255,255,0.55); max-width: 32ch; font-size: 0.93rem; }
.footer__col h4 {
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--bbs-orange-300); margin-bottom: 1rem;
}
.footer__col a { display: block; padding: 0.32rem 0; color: rgba(255,255,255,0.62); font-size: 0.95rem; transition: color 0.2s; }
.footer__col a:hover { color: #fff; }
.footer__bottom {
  display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; align-items: center;
  padding-block: 1.6rem; border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.85rem; color: rgba(255,255,255,0.45);
}
.footer__tag { font-family: var(--font-mono); letter-spacing: 0.18em; text-transform: uppercase; font-size: 0.7rem; }

/* ============ PAGINA-HERO (deep pages) ============ */
.page-hero { position: relative; overflow: hidden; padding-block: clamp(3.5rem, 8vw, 6.5rem); }
.page-hero .container { position: relative; z-index: 1; }
.page-hero__inner { max-width: 62ch; }
.page-hero h1 { margin-top: 1rem; }
.page-hero .lead { margin-top: 1.2rem; }
.page-hero__cta { margin-top: 2rem; display: flex; flex-wrap: wrap; gap: 0.9rem; }
.page-hero__mark { width: 90px; margin-bottom: 0.4rem; }

/* ============ STAPPEN ============ */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1rem, 2.5vw, 1.8rem); }
.step {
  position: relative; padding: 1.9rem 1.5rem;
  border-radius: var(--radius); background: var(--surface);
  border: 1px solid var(--border); box-shadow: var(--shadow-sm);
}
.step__n {
  width: 42px; height: 42px; border-radius: 12px;
  display: grid; place-items: center;
  font-family: var(--font-display); font-weight: 800; font-size: 1.1rem;
  color: #fff; background: var(--accent);
  margin-bottom: 1rem; box-shadow: 0 8px 20px -8px var(--accent-glow);
}
.step h3 { font-size: 1.12rem; margin-bottom: 0.4rem; }
.step p { font-size: 0.95rem; }

/* Tekst + media split (about) */
.split-2 { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.prose p { margin-top: 1rem; }
.media-card {
  border-radius: var(--radius-lg); overflow: hidden;
  background: var(--ink); border: 1px solid rgba(255,255,255,0.08);
  box-shadow: var(--shadow-lg); aspect-ratio: 4 / 3;
  display: grid; place-items: center; position: relative;
}
.media-card img { width: 60%; }
.media-card--light { background: #fff; border-color: rgba(0,0,0,0.08); }
.media-card--light::before { display: none; }
.media-card::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 30px 30px;
  mask-image: radial-gradient(circle at 50% 50%, #000, transparent 75%);
  -webkit-mask-image: radial-gradient(circle at 50% 50%, #000, transparent 75%);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 940px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__visual { order: -1; min-height: 300px; }
  .hero__panel { width: min(340px, 80%); }
  .features { grid-template-columns: repeat(2, 1fr); }
  .footer__top { grid-template-columns: 1fr 1fr; }
  .cta-band__inner { grid-template-columns: 1fr; }
}

/* Het hamburgermenu grijpt al vroeg in: de voluit geschreven NL-labels
   passen pas vanaf ± 1080px naast het brede wordmark-logo en de
   drietalige NL/EN/DE-schakelaar. */
@media (max-width: 1080px) {
  .nav__links {
    position: fixed; inset: 76px 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 0.2rem;
    background: var(--header-bg);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--header-border);
    padding: 1rem var(--gutter) 1.6rem;
    transform: translateY(-130%);
    transition: transform 0.4s var(--ease);
    box-shadow: var(--shadow-lg);
  }
  .nav.is-open .nav__links { transform: none; }
  .nav__link { padding: 0.85rem 1rem; font-size: 1.05rem; }
  .nav__link.is-active::after { left: 1rem; transform: none; top: 50%; }
  .nav__burger { display: inline-flex; }
}

@media (max-width: 760px) {
  .nav__actions .btn { display: none; }
  .brand__logo { height: 36px; }
  .products { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .form__row { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .split-2 { grid-template-columns: 1fr; }
  .split-2 .media-card { order: -1; }
}

@media (max-width: 480px) {
  .features { grid-template-columns: 1fr; }
  .brand__logo { height: 30px; }
  .footer__top { grid-template-columns: 1fr; }
  .hero__stats { gap: 1.4rem; }
}