/* Bullpup Scientific — site styles */
:root {
  --navy: #1d3a5f;
  --navy-2: #2c527e;
  --green: #00a46c;
  --green-2: #00af73;
  --coral: #ef8a6b;
  --coral-dark: #d96a49;
  --ink: #17283b;
  --text: #3d4f63;
  --muted: #6b7c8f;
  --line: #e2e9f0;
  --bg: #ffffff;
  --tint: #f3f7fa;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(23, 40, 59, .08);
  --wrap: 1160px;
  --font: "Inter", "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--font); color: var(--text); background: var(--bg); font-size: 17px; line-height: 1.65; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--navy-2); }
a:hover { color: var(--green); }
h1, h2, h3 { color: var(--ink); line-height: 1.2; margin: 0 0 .6em; letter-spacing: -.01em; }
h1 { font-size: clamp(2.1rem, 4.5vw, 3.4rem); font-weight: 800; }
h2 { font-size: clamp(1.5rem, 2.6vw, 2.1rem); font-weight: 750; }
h3 { font-size: 1.2rem; font-weight: 700; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.wrap.narrow { max-width: 820px; }
.small { font-size: .88rem; }
.muted { color: var(--muted); }
.center { text-align: center; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.skip { position: absolute; left: -999px; top: 0; background: var(--navy); color: #fff; padding: 8px 14px; z-index: 100; }
.skip:focus { left: 8px; }
:focus-visible { outline: 3px solid var(--coral); outline-offset: 2px; border-radius: 4px; }
.eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: .78rem; font-weight: 700; color: var(--green); margin-bottom: .6em; }
.eyebrow.light { color: #8fe0c1; }
.lead { font-size: 1.2rem; color: var(--ink); }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 22px; border-radius: 999px; font-weight: 700; font-size: .98rem;
  text-decoration: none; border: 2px solid var(--navy-2); color: var(--navy-2); background: transparent; cursor: pointer; transition: .15s; font-family: inherit; }
.btn:hover { background: var(--navy-2); color: #fff; }
.btn-accent { background: var(--coral); border-color: var(--coral); color: #fff; }
.btn-accent:hover { background: var(--coral-dark); border-color: var(--coral-dark); color: #fff; }
.btn-ghost { border-color: rgba(255,255,255,.6); color: #fff; }
.btn-ghost:hover { background: #fff; color: var(--navy); }
.btn-small { padding: 8px 16px; font-size: .9rem; }
.link-arrow { font-weight: 700; text-decoration: none; }
.link-arrow::after { content: " →"; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 1.5em; }

/* header */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.96); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.logo img { height: 46px; width: auto; }
.nav { display: flex; align-items: center; gap: 4px; }
.nav a { text-decoration: none; color: var(--ink); font-weight: 600; font-size: .95rem; padding: 8px 12px; border-radius: 8px; }
.nav a:hover { color: var(--green); }
.nav a[aria-current="page"]:not(.btn) { color: var(--green); }
.nav .btn { margin-left: 8px; color: var(--navy-2); }
.nav .btn:hover { color: #fff; }
.nav-toggle { display: none; background: none; border: 0; padding: 10px; cursor: pointer; }
.nav-toggle span:not(.sr) { display: block; width: 24px; height: 2px; background: var(--ink); margin: 5px 0; transition: .2s; }

/* hero */
.hero { background: radial-gradient(1200px 500px at 85% 20%, rgba(0,175,115,.25), transparent 60%), linear-gradient(135deg, #142c49 0%, var(--navy) 45%, #1e5a73 100%); color: #dbe7f2; padding: 72px 0 0; overflow: hidden; }
.hero h1 { color: #fff; margin-bottom: .2em; }
.hero .lead { color: #fff; font-size: 1.4rem; font-weight: 600; }
.hero-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 40px; align-items: center; }
.hero-media img { filter: drop-shadow(0 30px 40px rgba(0,0,0,.35)); transform: rotate(-4deg); }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; padding: 0; max-width: calc(var(--wrap) - 40px); background: rgba(255,255,255,.12); border-radius: var(--radius) var(--radius) 0 0; margin-top: 56px; overflow: hidden; }
@media (max-width: 1200px) { .stats { margin-left: 20px; margin-right: 20px; } }
.stats div { background: rgba(10, 28, 48, .55); padding: 22px 20px; display: flex; flex-direction: column; }
.stats strong { color: #fff; font-size: 1.6rem; font-weight: 800; }
.stats span { color: #a9c2d8; font-size: .9rem; }

.page-hero { background: linear-gradient(135deg, #142c49, var(--navy) 55%, #1e5a73); color: #cfe0ee; padding: 64px 0 56px; }
.page-hero h1 { color: #fff; }
.page-hero .lead { color: #dbe7f2; max-width: 760px; margin: 0; }

/* sections */
.section { padding: 80px 0; }
.section.tint { background: var(--tint); }
.section-head { max-width: 720px; margin: 0 auto 40px; text-align: center; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split.reverse > :first-child { order: 2; }
.rounded { border-radius: var(--radius); }
.prose p { max-width: 62ch; }
figure { margin: 0; }
figcaption { font-size: .85rem; color: var(--muted); margin-top: 8px; }

.cards.two { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.card > img { width: 100%; height: 220px; object-fit: cover; }
.card > img.top { object-position: top; object-fit: contain; background: #fff; padding: 12px; }
.card > img.contain { object-fit: contain; background: linear-gradient(135deg, #eef4f8, #f9fbfc); padding: 20px; }
.card-body { padding: 26px 28px; }

.adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 36px; }
.adv { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; display: flex; flex-direction: column; gap: 2px; }
.adv svg { width: 44px; height: 44px; padding: 10px; border-radius: 12px; background: #e3f6ee; fill: var(--green); margin-bottom: 12px; }
.adv strong { color: var(--ink); font-size: 1.08rem; }
.adv span { color: var(--muted); }

.specs { display: grid; grid-template-columns: 1fr 1fr; gap: 0; margin: 0; background: #fff; border-radius: var(--radius); border: 1px solid var(--line); overflow: hidden; }
.specs div { padding: 16px 20px; border-bottom: 1px solid var(--line); }
.specs div:nth-child(odd) { border-right: 1px solid var(--line); }
.specs dt { font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); font-weight: 700; }
.specs dd { margin: 2px 0 0; color: var(--ink); font-weight: 600; }

.downloads { list-style: none; padding: 0; margin: 1.2em 0; display: grid; gap: 10px; }
.downloads a { display: flex; align-items: center; gap: 12px; padding: 14px 18px; border: 1px solid var(--line); border-radius: 12px; text-decoration: none; font-weight: 600; color: var(--ink); background: #fff; }
.downloads a::before { content: ""; width: 22px; height: 22px; flex-shrink: 0; background: no-repeat center/contain url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%2300a46c'%3E%3Cpath d='M5 20h14v-2H5v2zM19 9h-4V3H9v6H5l7 7 7-7z'/%3E%3C/svg%3E"); }
.downloads a:hover { border-color: var(--green); color: var(--green); }

.brochure-pages { display: flex; gap: 14px; margin: 1em 0 1.4em; }
.brochure-pages img { width: 46%; max-width: 220px; border-radius: 8px; box-shadow: var(--shadow); }

.about-teaser { max-width: 820px; text-align: center; display: flex; flex-direction: column; align-items: center; gap: 12px; }

/* video facade */
.video { position: relative; display: block; width: 100%; aspect-ratio: 16 / 9; padding: 0; border: 0; border-radius: var(--radius); overflow: hidden; cursor: pointer; background: #0d1d30; box-shadow: var(--shadow); }
.video img { width: 100%; height: 100%; object-fit: cover; opacity: .85; transition: .2s; }
.video:hover img { opacity: 1; transform: scale(1.02); }
.video .play { position: absolute; inset: 0; margin: auto; width: 74px; height: 74px; border-radius: 50%; background: rgba(239,138,107,.95); box-shadow: 0 8px 30px rgba(0,0,0,.35); }
.video .play::after { content: ""; position: absolute; left: 29px; top: 22px; border-left: 22px solid #fff; border-top: 15px solid transparent; border-bottom: 15px solid transparent; }
.video .video-title { position: absolute; left: 16px; bottom: 12px; color: #fff; font-weight: 700; text-shadow: 0 1px 6px rgba(0,0,0,.6); }
.video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

/* problem page */
.num-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin: 28px 0; }
.num-grid div { background: var(--tint); border-radius: var(--radius); padding: 24px; }
.num-grid strong { display: block; font-size: 2.4rem; color: var(--navy-2); font-weight: 800; line-height: 1.1; }
.num-grid span { color: var(--text); font-size: .95rem; }
.callout { border-left: 4px solid var(--coral); background: #fff6f2; padding: 18px 22px; border-radius: 0 12px 12px 0; color: var(--ink); }

/* FAQ */
.tabs { display: flex; gap: 8px; margin-bottom: 28px; flex-wrap: wrap; }
.tabs a { padding: 8px 18px; border-radius: 999px; background: var(--tint); text-decoration: none; font-weight: 700; color: var(--ink); }
.faq { margin-bottom: 48px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; padding: 18px 40px 18px 0; font-weight: 700; color: var(--ink); position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 6px; top: 12px; font-size: 1.6rem; color: var(--green); font-weight: 400; }
.faq details[open] summary::after { content: "–"; }
.faq .answer { padding: 0 0 18px; }
h2[id] { scroll-margin-top: 100px; }

/* training & events */
.guide { list-style: none; padding: 0; margin: 28px 0 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 18px; counter-reset: s; }
.guide li { background: #fff; border-radius: 12px; overflow: hidden; border: 1px solid var(--line); }
.guide span { display: block; padding: 10px 14px; font-weight: 700; color: var(--ink); }
.event { padding: 36px 0; border-bottom: 1px solid var(--line); }
.event:last-child { border-bottom: 0; }
.event-head { display: flex; align-items: center; gap: 20px; margin-bottom: 20px; }
.event-head img { height: 54px; width: auto; }
.event-head h2 { margin: 0; }
.event-video { max-width: 760px; }
.gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.gallery img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 10px; }
.zoom { display: block; }
.lightbox { position: fixed; inset: 0; background: rgba(8, 18, 30, .92); display: flex; align-items: center; justify-content: center; z-index: 200; padding: 30px; cursor: zoom-out; }
.lightbox img { max-height: 90vh; max-width: 92vw; border-radius: 8px; }

/* about / contact */
.contact-card .card-body { padding: 32px; }
.contact-list { list-style: none; padding: 0; margin: 0; }
.contact-list li { padding: 10px 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 90px 1fr; }
.contact-list span { color: var(--muted); font-size: .85rem; text-transform: uppercase; letter-spacing: .06em; font-weight: 700; padding-top: 2px; }
.wide-image img { width: 100%; max-height: 420px; object-fit: cover; }
.form-card { background: var(--tint); border-radius: var(--radius); padding: 32px; }

/* contact form */
.contact-form .fields { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 18px; }
.contact-form label { font-size: .85rem; font-weight: 700; color: inherit; display: flex; flex-direction: column; gap: 6px; }
.contact-form label.full { grid-column: 1 / -1; }
.contact-form input, .contact-form textarea, .calc input {
  font: inherit; font-size: 1rem; padding: 11px 14px; border-radius: 10px; border: 1px solid #c9d6e2; background: #fff; color: var(--ink); width: 100%; }
.contact-form input:focus, .contact-form textarea:focus, .calc input:focus { outline: 3px solid rgba(0,164,108,.25); border-color: var(--green); }
.hp { position: absolute; left: -9999px; }
.form-msg { padding: 12px 16px; border-radius: 10px; font-weight: 600; }
.form-msg.ok { background: #e3f6ee; color: #0b6b47; }
.form-msg.err { background: #fdecea; color: #9b2c1f; }

.cta-band { background: linear-gradient(135deg, #142c49, var(--navy) 55%, #1e5a73); color: #cfe0ee; padding: 80px 0; }
.cta-band h2 { color: #fff; }
.cta-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px; align-items: start; }
.cta-band .contact-form { background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.14); border-radius: var(--radius); padding: 28px; }
.cta-band .contact-form label { color: #dbe7f2; }
.contact-lines { list-style: none; padding: 0; margin: 1.5em 0 0; }
.contact-lines li { padding: 4px 0; }
.contact-lines a, .site-footer a { color: #fff; }

/* calculator */
.calc .card-body { display: grid; gap: 16px; padding: 30px; }
.calc label { font-weight: 700; font-size: .92rem; color: var(--ink); display: flex; flex-direction: column; gap: 6px; }
.calc-result { margin-top: 8px; padding: 20px; border-radius: 12px; background: linear-gradient(135deg, var(--navy), #1e5a73); color: #fff; display: flex; flex-direction: column; }
.calc-result span { font-size: .85rem; text-transform: uppercase; letter-spacing: .08em; color: #a9c2d8; font-weight: 700; }
.calc-result output { font-size: 2.2rem; font-weight: 800; }

/* footer */
.site-footer { background: #0f2238; color: #a9bccf; padding: 56px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.2fr 2fr 1.2fr; gap: 40px; }
.site-footer nav { display: grid; grid-template-columns: repeat(3, auto); gap: 8px 24px; align-content: start; }
.site-footer nav a { text-decoration: none; color: #cfe0ee; }
.site-footer nav a:hover { color: #fff; }
.site-footer img { margin-bottom: 12px; height: 44px; width: auto; }
.copyright { border-top: 1px solid rgba(255,255,255,.1); margin-top: 40px; padding-top: 20px; }

/* responsive */
@media (max-width: 1020px) {
  .nav-toggle { display: block; }
  .nav { position: absolute; top: 76px; left: 0; right: 0; background: #fff; flex-direction: column; align-items: stretch; padding: 12px 20px 20px; border-bottom: 1px solid var(--line); box-shadow: var(--shadow); display: none; }
  .nav.open { display: flex; }
  .nav .btn { margin: 8px 0 0; justify-content: center; }
}
@media (max-width: 900px) {
  .hero-grid, .split, .cards.two, .cta-grid, .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .split.reverse > :first-child { order: 0; }
  .hero { padding-top: 48px; }
  .stats, .num-grid { grid-template-columns: 1fr 1fr; }
  .adv-grid { grid-template-columns: 1fr 1fr; }
  .gallery { grid-template-columns: 1fr 1fr; }
  .section { padding: 56px 0; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .adv-grid, .contact-form .fields, .specs { grid-template-columns: 1fr; }
  .specs div:nth-child(odd) { border-right: 0; }
  .site-footer nav { grid-template-columns: 1fr 1fr; }
  .stats strong { font-size: 1.3rem; }
  .event-head { flex-direction: column; align-items: flex-start; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}

.wrap.stats { padding: 0; }
.photo { background: #fff; box-shadow: var(--shadow); }
.product-gallery { display: grid; grid-template-columns: 1fr 1.2fr 1.2fr; gap: 24px; align-items: center; }
.product-gallery figure { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; height: 100%; display: flex; flex-direction: column; justify-content: center; }
.product-gallery img { max-height: 340px; width: auto; margin: 0 auto; }
.faq-img { max-width: 220px; margin-top: 12px; }
@media (max-width: 900px) { .product-gallery { grid-template-columns: 1fr; } }