/* BioTerraVa theme — main stylesheet */
:root {
  --navy: #0f172a;
  --navy-2: #1e293b;
  --sky: #0284c7;
  --sky-l: #38bdf8;
  --green: #16a34a;
  --green-l: #4ade80;
  --slate: #475569;
  --slate-l: #94a3b8;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --border: #e2e8f0;
  --grad: linear-gradient(90deg, #0284c7, #16a34a);
  --radius: 14px;
  --shadow: 0 4px 20px rgba(15, 23, 42, .08);
  --shadow-lg: 0 12px 40px rgba(15, 23, 42, .14);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: #1e293b;
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--sky); text-decoration: none; }
a:hover { color: #075985; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.center { text-align: center; }
.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { left: 10px; top: 10px; background: #fff; padding: 8px 14px; z-index: 999; border-radius: 8px; }

/* Gradient text & buttons */
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 22px; border-radius: 10px;
  font-weight: 600; font-size: 15px; border: 0; cursor: pointer;
  transition: opacity .2s, transform .15s;
}
.btn-grad { background: var(--grad); color: #fff !important; box-shadow: 0 4px 14px rgba(2, 132, 199, .35); }
.btn-grad:hover { opacity: .92; transform: translateY(-1px); }
.btn-outline { border: 1.5px solid rgba(255,255,255,.55); color: #fff !important; background: transparent; }
.btn-outline:hover { background: rgba(255,255,255,.12); }
.btn-white { background: #fff; color: var(--navy) !important; }
.btn-lg { padding: 14px 28px; font-size: 16px; }
.btn-block { width: 100%; justify-content: center; }
.text-link { font-weight: 600; font-size: 15px; }
.text-link.light { color: var(--sky-l); }

/* Header */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.94); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border); }
.admin-bar .site-header { top: 32px; }
.topbar { background: var(--navy); color: #cbd5e1; font-size: 12.5px; }
.topbar-inner { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; padding-top: 6px; padding-bottom: 6px; }
.topbar-phone { color: #e2e8f0; }
.topbar-phone:hover { color: #fff; }
.mainnav { display: flex; align-items: center; gap: 18px; min-height: 72px; }
.brand { display: flex; align-items: center; gap: 10px; margin-right: auto; }
.brand-text { font-size: 21px; font-weight: 800; letter-spacing: -.02em; color: var(--navy); line-height: 1.1; }
.brand-text.light { color: #fff; }
.brand-sub { display: block; font-size: 10px; font-weight: 600; letter-spacing: .18em; text-transform: uppercase; color: var(--slate-l); }
.nav-menu { display: flex; align-items: center; gap: 2px; list-style: none; margin: 0; padding: 0; }
.nav-menu li a { display: block; padding: 8px 13px; font-size: 14.5px; font-weight: 500; color: #334155; border-radius: 8px; }
.nav-menu li a:hover, .nav-menu li.current-menu-item > a, .nav-menu li.current_page_item > a { color: var(--sky); background: #f0f9ff; }
.nav-cta { font-size: 14px; padding: 9px 18px; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; padding: 10px; cursor: pointer; }
.nav-toggle span { width: 24px; height: 2.5px; background: var(--navy); border-radius: 2px; }
.custom-logo { max-height: 56px; width: auto; }

/* Hero */
.hero { background-size: cover; background-position: center; color: #fff; }
.hero-inner { padding: 130px 20px 120px; max-width: 800px; margin-left: max(20px, calc((100% - 1200px)/2 + 20px)); }
.hero h1 { font-size: clamp(34px, 5vw, 58px); font-weight: 800; line-height: 1.08; letter-spacing: -.025em; margin: 22px 0 0; }
.hero .lead { font-size: 18px; color: #e2e8f0; margin: 24px 0 0; max-width: 640px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }
.hero-note { margin-top: 20px; font-size: 13.5px; color: #cbd5e1; }
.badge {
  display: inline-block; padding: 7px 16px; border-radius: 999px;
  border: 1px solid rgba(56,189,248,.4); background: rgba(56,189,248,.12);
  color: #7dd3fc; font-size: 11.5px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; margin: 0;
}

/* Stats band */
.stats-band { background: var(--navy); color: #fff; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding-top: 44px; padding-bottom: 44px; text-align: center; }
.stat-value { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; margin: 0; }
.stat-label { margin: 6px 0 0; font-size: 13.5px; color: #cbd5e1; }

/* Sections */
.section { padding: 84px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--navy); color: #e2e8f0; }
.eyebrow { font-size: 12.5px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--sky); margin: 0 0 12px; }
.eyebrow.light { color: var(--sky-l); }
.section-title { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; letter-spacing: -.02em; color: var(--navy); margin: 0 0 16px; line-height: 1.15; }
.section-title.light { color: #fff; }
.section-lead { color: var(--slate); max-width: 720px; margin: 0 0 20px; font-size: 16.5px; }
.section-gap { margin-top: 48px; }
.section-head-row { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; flex-wrap: wrap; margin-bottom: 40px; }
.body-text { color: var(--slate); }
.muted { color: var(--slate-l); font-size: 13px; }
.subtitle { color: var(--sky); font-weight: 600; margin-top: -8px; }

/* Cards */
.card-grid { display: grid; gap: 26px; }
.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
.card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: box-shadow .25s; }
.card:hover { box-shadow: var(--shadow-lg); }
.card > a { color: inherit; display: block; }
.card-img { height: 200px; overflow: hidden; }
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.card:hover .card-img img { transform: scale(1.05); }
.card-body { padding: 24px; }
.card-body h3, .card-body h2 { margin: 0 0 10px; font-size: 18.5px; font-weight: 700; color: var(--navy); line-height: 1.3; }
.card-body p { margin: 0 0 12px; font-size: 14.5px; color: var(--slate); }
.card-cat { font-size: 11.5px !important; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--green) !important; }
.card-meta { font-size: 12.5px !important; color: var(--slate-l) !important; }
.mini-card { display: block; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); transition: box-shadow .25s, border-color .25s; color: inherit; }
.mini-card:hover { box-shadow: var(--shadow-lg); border-color: #bae6fd; }
.mini-card h3, .mini-card h2 { margin: 0 0 8px; font-size: 16.5px; font-weight: 700; color: var(--navy); }
.mini-card p { margin: 0 0 12px; font-size: 14px; color: var(--slate); }
.mini-card-foot { font-size: 11.5px !important; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--slate-l) !important; margin: 0 !important; }
.check-list { list-style: none; margin: 14px 0; padding: 0; display: grid; gap: 8px; }
.check-list.cols-2 { grid-template-columns: repeat(2, 1fr); }
.check-list li { position: relative; padding-left: 24px; font-size: 14.5px; color: #334155; }
.check-list li::before { content: '✓'; position: absolute; left: 0; color: var(--green); font-weight: 800; }

/* Dark cards */
.dark-card { background: rgba(30,41,59,.65); border: 1px solid #334155; border-radius: var(--radius); padding: 26px; transition: border-color .25s; }
.dark-card:hover { border-color: rgba(56,189,248,.5); }
.dark-card-type { font-size: 11.5px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--green-l); margin: 0 0 10px; }
.dark-card h3 { color: #fff; margin: 0 0 4px; font-size: 18px; }
.dark-card-loc { color: var(--slate-l); font-size: 13.5px; margin: 0 0 12px; }
.dark-card p { font-size: 14.5px; color: #cbd5e1; }
.dark-card-scale { color: var(--sky-l) !important; font-weight: 700; margin: 14px 0 0; }

/* Two column & compare */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.compare-row { border: 1px solid var(--border); border-radius: 12px; padding: 18px 20px; margin-top: 18px; }
.compare-title { font-weight: 700; color: var(--navy); margin: 0 0 12px; }
.compare-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; font-size: 13.5px; }
.compare-cols p { margin: 0; padding: 10px 12px; border-radius: 9px; }
.compare-us { background: #f0fdf4; border: 1px solid #bbf7d0; color: #14532d; }
.compare-them { background: var(--bg-alt); border: 1px solid var(--border); color: var(--slate-l); }
.img-with-badge { position: relative; }
.img-with-badge img { border-radius: var(--radius); box-shadow: var(--shadow-lg); }
.img-badge { position: absolute; bottom: -22px; left: -22px; max-width: 260px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; box-shadow: var(--shadow-lg); }
.img-badge p { margin: 0; font-size: 13px; color: var(--slate); }
.img-badge .stat-value { color: var(--navy); font-size: 28px; }

/* CTA band */
.cta-band { background-size: cover; background-position: center; color: #fff; text-align: center; }
.cta-inner { padding: 100px 20px; max-width: 760px; }
.cta-inner h2 { font-size: clamp(26px, 3.6vw, 38px); font-weight: 800; letter-spacing: -.02em; margin: 0 0 14px; }
.cta-inner p { font-size: 17px; color: #e2e8f0; margin: 0 0 32px; }
.cta-box { background: var(--grad); color: #fff; border-radius: var(--radius); padding: 34px 38px; margin: 48px 0 0; }
.cta-box h2 { margin: 0 0 8px; font-size: 22px; color: #fff; }
.cta-box p { margin: 0 0 20px; color: #e0f2fe; font-size: 14.5px; }

/* Page hero */
.page-hero { background: var(--navy); color: #fff; padding: 80px 0; }
.page-title { font-size: clamp(30px, 4.4vw, 46px); font-weight: 800; letter-spacing: -.02em; margin: 0 0 18px; max-width: 800px; line-height: 1.12; }
.page-lead { font-size: 17px; color: #cbd5e1; max-width: 680px; margin: 0; }

/* Service rows */
.service-row { display: grid; grid-template-columns: 1fr 1.2fr; gap: 36px; border: 1px solid var(--border); border-radius: var(--radius); padding: 34px 36px; margin-bottom: 26px; box-shadow: var(--shadow); scroll-margin-top: 120px; background: #fff; }
.service-num { color: var(--sky); font-weight: 800; font-size: 15px; margin: 0 0 4px; }
.service-main h2 { margin: 0 0 12px; font-size: 24px; font-weight: 800; color: var(--navy); letter-spacing: -.01em; }
.service-main p { color: var(--slate); font-size: 15px; }
.service-points { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; align-content: start; }
.service-points li { position: relative; background: var(--bg-alt); border: 1px solid #f1f5f9; border-radius: 10px; padding: 12px 14px 12px 36px; font-size: 13.5px; color: #334155; }
.service-points li::before { content: '✓'; position: absolute; left: 13px; color: var(--green); font-weight: 800; }

/* Sector rows */
.sector-row { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; margin-bottom: 80px; scroll-margin-top: 120px; }
.sector-row:last-child { margin-bottom: 0; }
.sector-row.flip > div { order: 2; }
.sector-img { border-radius: var(--radius); box-shadow: var(--shadow-lg); aspect-ratio: 3/2; object-fit: cover; width: 100%; }

/* Project cards */
.project-card { display: flex; flex-direction: column; }
.project-loc { color: var(--slate-l) !important; font-size: 13px !important; }
.project-scale { border-top: 1px solid #f1f5f9; padding-top: 14px; margin-top: auto !important; color: var(--sky) !important; font-weight: 700; }

/* About */
.about-grid { display: grid; grid-template-columns: 380px 1fr; gap: 56px; align-items: start; }
.about-photo { position: sticky; top: 110px; margin: 0; }
.about-photo img { border-radius: var(--radius); box-shadow: var(--shadow-lg); }
.about-photo figcaption { text-align: center; font-size: 13px; color: var(--slate-l); margin-top: 14px; }
.cred-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 28px; }
.cred { margin: 0; background: var(--bg-alt); border: 1px solid #f1f5f9; border-radius: 9px; padding: 9px 12px; font-size: 12.5px; font-weight: 500; color: #334155; }

/* Post hero & article */
.post-hero { background-size: cover; background-position: center; color: #fff; }
.post-hero-inner { padding: 120px 20px 46px; max-width: 820px; }
.post-hero h1 { font-size: clamp(26px, 3.8vw, 40px); font-weight: 800; letter-spacing: -.02em; line-height: 1.15; margin: 12px 0 16px; }
.post-meta { color: #cbd5e1; font-size: 14px; margin: 0; }
.article-wrap { max-width: 800px; }
.article-body { font-size: 16.5px; line-height: 1.85; color: #334155; }
.article-body h2 { font-size: 24px; font-weight: 800; color: var(--navy); letter-spacing: -.01em; margin: 40px 0 14px; }
.article-body h1 { font-size: 32px; font-weight: 800; color: var(--navy); margin: 0 0 20px; }
.article-body p { margin: 0 0 22px; }
.post-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 44px; }
.post-nav a { display: block; border: 1px solid var(--border); border-radius: 12px; padding: 16px 18px; font-size: 14px; font-weight: 600; color: var(--navy); }
.post-nav a:hover { border-color: #bae6fd; color: var(--sky); }
.post-nav-next { text-align: right; }
.pagination-wrap { margin-top: 40px; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 56px; }
.contact-list { list-style: none; margin: 26px 0 0; padding: 0; display: grid; gap: 20px; }
.contact-list li { display: flex; gap: 16px; align-items: flex-start; }
.contact-ico { display: flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: 12px; background: #f0f9ff; flex-shrink: 0; font-size: 18px; }
.contact-label { display: block; font-size: 13px; color: var(--slate-l); }
.contact-list strong { color: var(--navy); }
.info-box { background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; margin-top: 30px; }
.info-box h3 { margin: 0 0 6px; color: var(--navy); }
.map-frame { width: 100%; height: 260px; border: 1px solid var(--border); border-radius: var(--radius); margin-top: 28px; }
.contact-form { border: 1px solid var(--border); border-radius: var(--radius); padding: 36px; box-shadow: var(--shadow); background: #fff; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 24px; }
.form-grid label { display: block; font-size: 14px; font-weight: 500; color: #334155; }
.form-grid .span-2 { grid-column: span 2; }
.form-grid input, .form-grid select, .form-grid textarea {
  display: block; width: 100%; margin-top: 6px; padding: 11px 14px;
  border: 1px solid #cbd5e1; border-radius: 10px; font-size: 14.5px; font-family: inherit;
}
.form-grid input:focus, .form-grid select:focus, .form-grid textarea:focus { outline: 2px solid var(--sky-l); border-color: var(--sky); }
.contact-form .btn-block { margin-top: 26px; }
.form-note { text-align: center; font-size: 12.5px; color: var(--slate-l); margin: 12px 0 0; }
.success-box { border: 1px solid #bbf7d0; background: #f0fdf4; border-radius: var(--radius); padding: 44px 36px; text-align: center; }
.success-box h2 { color: var(--navy); }
.success-icon { font-size: 40px; margin: 0; }

/* 404 */
.notfound { text-align: center; padding: 120px 0; }
.notfound-code { font-size: 72px; font-weight: 800; margin: 0; }
.notfound h1 { color: var(--navy); margin: 8px 0 10px; }
.notfound p { color: var(--slate); margin-bottom: 28px; }

/* Footer */
.site-footer { background: var(--navy); color: #cbd5e1; margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1.2fr; gap: 40px; padding-top: 60px; padding-bottom: 50px; }
.footer-brand p { font-size: 14px; line-height: 1.7; margin: 16px 0 0; }
.footer-contact { list-style: none; margin: 20px 0 0; padding: 0; display: grid; gap: 10px; font-size: 13.5px; }
.footer-contact a { color: #cbd5e1; }
.footer-contact a:hover { color: #fff; }
.footer-col h3 { color: #fff; font-size: 13px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; margin: 0 0 16px; }
.footer-gap { margin-top: 26px !important; }
.footer-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; font-size: 14px; }
.footer-col a { color: #cbd5e1; }
.footer-col a:hover { color: #fff; }
.footer-legal { border-top: 1px solid #1e293b; padding: 20px 0; font-size: 12.5px; color: #94a3b8; }
.legal-note { margin: 0 0 12px; line-height: 1.7; }
.legal-row { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
.legal-row p { margin: 0; }
.legal-links a { color: #94a3b8; margin-left: 16px; }
.legal-links a:hover { color: #fff; }

/* Chat widget */
.btv-chat-btn {
  position: fixed; bottom: 22px; right: 22px; z-index: 9999;
  width: 56px; height: 56px; border-radius: 50%; border: 0; cursor: pointer;
  background: linear-gradient(135deg, #0284c7, #16a34a); color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 24px rgba(2, 132, 199, .4); transition: transform .15s;
}
.btv-chat-btn:hover { transform: scale(1.07); }
.btv-chat-panel {
  position: fixed; bottom: 92px; right: 22px; z-index: 9999;
  width: min(92vw, 380px); height: 520px; max-height: calc(100vh - 120px);
  background: #fff; border: 1px solid var(--border); border-radius: 18px;
  box-shadow: 0 20px 60px rgba(15, 23, 42, .25);
  display: flex; flex-direction: column; overflow: hidden;
}
.btv-chat-head { background: var(--grad); color: #fff; padding: 13px 16px; }
.btv-chat-head p { margin: 0; font-weight: 700; font-size: 14.5px; }
.btv-chat-head span { font-size: 11.5px; color: #e0f2fe; }
.btv-chat-body { flex: 1; overflow-y: auto; padding: 14px 12px; background: var(--bg-alt); display: flex; flex-direction: column; gap: 12px; }
.btv-msg { display: flex; }
.btv-msg.user { justify-content: flex-end; }
.btv-bubble {
  max-width: 82%; padding: 10px 14px; border-radius: 16px; font-size: 13.5px; line-height: 1.55;
  background: #fff; border: 1px solid #f1f5f9; box-shadow: 0 1px 4px rgba(15,23,42,.06); color: #334155;
}
.btv-msg.user .btv-bubble { background: #0284c7; color: #fff; border: 0; }
.btv-links { display: flex; flex-direction: column; gap: 4px; margin-top: 8px; }
.btv-links a { font-weight: 600; font-size: 13px; text-decoration: underline; text-underline-offset: 2px; }
.btv-chat-sugg { display: flex; flex-wrap: wrap; gap: 6px; padding: 8px 12px; background: var(--bg-alt); }
.btv-chip { border: 1px solid #bae6fd; background: #fff; color: #0369a1; border-radius: 999px; padding: 5px 11px; font-size: 11.5px; cursor: pointer; }
.btv-chip:hover { background: #f0f9ff; }
.btv-chat-form { display: flex; gap: 8px; padding: 10px; border-top: 1px solid var(--border); background: #fff; }
.btv-chat-form input { flex: 1; border: 1px solid var(--border); border-radius: 10px; padding: 9px 12px; font-size: 13.5px; font-family: inherit; }
.btv-chat-form input:focus { outline: 2px solid var(--sky-l); }
.btv-chat-form button { width: 38px; border: 0; border-radius: 10px; background: var(--grad); color: #fff; cursor: pointer; font-size: 14px; }
.btv-typing .dot { display: inline-block; width: 7px; height: 7px; margin-right: 4px; border-radius: 50%; background: #94a3b8; animation: btv-bounce 1.2s infinite; }
.btv-typing .dot:nth-child(2) { animation-delay: .15s; }
.btv-typing .dot:nth-child(3) { animation-delay: .3s; }
@keyframes btv-bounce { 0%, 60%, 100% { transform: none; } 30% { transform: translateY(-5px); } }

/* Responsive */
@media (max-width: 1024px) {
  .cols-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .about-photo { position: static; max-width: 420px; }
}
@media (max-width: 860px) {
  .nav-menu {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; background: #fff;
    border-bottom: 1px solid var(--border); padding: 10px 16px 16px; gap: 2px;
  }
  .nav-menu.is-open { display: flex; }
  .nav-menu li a { padding: 12px 14px; }
  .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .cols-3 { grid-template-columns: 1fr; }
  .two-col, .sector-row, .service-row, .contact-grid { grid-template-columns: 1fr; }
  .sector-row.flip > div { order: 0; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .service-points, .check-list.cols-2, .cred-grid, .cols-2 { grid-template-columns: 1fr; }
  .compare-cols { grid-template-columns: 1fr; }
  .hero-inner { padding: 90px 20px 80px; }
  .section { padding: 60px 0; }
  .img-badge { position: static; margin-top: 16px; max-width: none; }
  .post-nav { grid-template-columns: 1fr; }
  .post-nav-next { text-align: left; }
}
@media (max-width: 560px) {
  .cols-4 { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .form-grid .span-2 { grid-column: span 1; }
  .footer-grid { grid-template-columns: 1fr; }
  .topbar-inner { justify-content: center; text-align: center; }
}