/* OHM BATTERY — Shared site chrome (nav / footer / WhatsApp float)
   Palette: black / white / dark gray + green accent (industrial, premium) */
:root {
  --ohm-black:#111214; --ohm-dark:#1c1e21; --ohm-gray:#5a5e66;
  --ohm-green:#00b578; --ohm-line:#e4e6ea; --ohm-bg:#f7f8fa;
}
[hidden] { display:none !important; }

/* ===== Top Navigation ===== */
.ohm-nav { position:fixed; top:0; left:0; right:0; z-index:1000; background:#fff;
  border-bottom:1px solid var(--ohm-line); padding:0 4%; }
.ohm-nav-inner { max-width:1280px; margin:0 auto; display:flex; align-items:center;
  gap:28px; height:68px; }
.ohm-logo img { height:36px; display:block; }
.ohm-logo { display:flex; align-items:center; gap:10px; text-decoration:none; }
.ohm-logo-text { font-weight:800; font-size:1.05rem; color:var(--ohm-black); letter-spacing:0.5px; }
.ohm-logo-text small { display:block; font-weight:600; font-size:0.58rem; color:var(--ohm-gray);
  letter-spacing:2.5px; }

.ohm-menu { display:flex; align-items:center; gap:4px; list-style:none; margin:0; padding:0; flex:1; }
.ohm-menu > li > a, .ohm-drop-btn { display:block; padding:10px 12px; color:var(--ohm-black);
  text-decoration:none; font-weight:600; font-size:0.88rem; background:none; border:none;
  cursor:pointer; font-family:inherit; white-space:nowrap; }
.ohm-menu > li > a:hover, .ohm-drop-btn:hover { color:var(--ohm-green); }

.ohm-drop { position:relative; }
.ohm-drop-btn::after { content:'▾'; font-size:0.7rem; margin-left:4px; color:var(--ohm-gray); }
.ohm-drop-panel { position:absolute; top:100%; left:0; background:#fff; border:1px solid var(--ohm-line);
  border-radius:12px; box-shadow:0 12px 40px rgba(0,0,0,0.12); padding:20px 24px;
  display:none; gap:36px; min-width:560px; }
.ohm-drop:hover .ohm-drop-panel, .ohm-drop.open .ohm-drop-panel { display:flex; }
.ohm-drop-col h5 { font-size:0.72rem; text-transform:uppercase; letter-spacing:1.5px;
  color:var(--ohm-gray); margin:0 0 10px; }
.ohm-drop-col a { display:block; padding:6px 0; color:var(--ohm-black); text-decoration:none;
  font-size:0.88rem; font-weight:500; }
.ohm-drop-col a:hover { color:var(--ohm-green); }

.ohm-nav-cta { display:flex; align-items:center; gap:12px; margin-left:auto; }
.ohm-quote-btn { background:var(--ohm-green); color:#fff !important; padding:10px 20px;
  border-radius:8px; font-weight:700; font-size:0.88rem; text-decoration:none; white-space:nowrap; }
.ohm-quote-btn:hover { background:var(--ohm-black); }
.ohm-wa-nav { display:flex; align-items:center; justify-content:center; width:38px; height:38px;
  border-radius:50%; background:#25D366; color:#fff; text-decoration:none; }
.ohm-wa-nav svg { width:20px; height:20px; fill:#fff; }
.ohm-wa-nav[hidden] { display:none; }

.ohm-burger { display:none; background:none; border:none; font-size:1.5rem; cursor:pointer;
  color:var(--ohm-black); margin-left:auto; }

/* language switcher (shared) */
.lang-switcher { display:flex; gap:2px; border:1px solid var(--ohm-line); border-radius:8px; overflow:hidden; }
.lang-btn { border:none; background:#fff; padding:7px 10px; font-size:0.78rem; font-weight:600;
  color:var(--ohm-gray); cursor:pointer; }
.lang-btn.active { background:var(--ohm-black); color:#fff; }

/* ===== Footer ===== */
.ohm-footer { background:var(--ohm-black); color:#c7cad1; padding:56px 4% 32px; margin-top:0; }
.ohm-footer-inner { max-width:1280px; margin:0 auto; }
.ohm-footer-grid { display:grid; grid-template-columns:1.4fr repeat(5, 1fr); gap:32px; }
.ohm-footer-brand img { height:34px; margin-bottom:14px; background:#fff; padding:5px 9px; border-radius:8px; }
.ohm-footer-brand p { font-size:0.85rem; line-height:1.7; color:#9aa0a8; max-width:260px; }
.ohm-footer h4 { color:#fff; font-size:0.82rem; text-transform:uppercase; letter-spacing:1.5px;
  margin:0 0 14px; }
.ohm-footer a { display:block; color:#c7cad1; text-decoration:none; font-size:0.86rem;
  padding:4px 0; }
.ohm-footer a:hover { color:var(--ohm-green); }
.ohm-footer-bottom { border-top:1px solid #2a2d33; margin-top:40px; padding-top:20px;
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:8px; font-size:0.8rem; color:#8b9098; }

/* ===== WhatsApp Float ===== */
.ohm-wa-float { position:fixed; right:22px; bottom:22px; z-index:999; display:flex; align-items:center;
  gap:10px; background:#25D366; color:#fff; padding:12px 18px; border-radius:50px;
  text-decoration:none; font-weight:700; font-size:0.9rem; box-shadow:0 6px 24px rgba(37,211,102,0.4);
  transition:transform 0.2s; }
.ohm-wa-float:hover { transform:scale(1.05); }
.ohm-wa-float svg { width:22px; height:22px; fill:#fff; }
.ohm-wa-float[hidden] { display:none; }

/* ===== Mobile ===== */
@media (max-width:1024px) {
  .ohm-burger { display:block; }
  .ohm-menu { position:fixed; top:68px; left:0; right:0; background:#fff; flex-direction:column;
    align-items:stretch; padding:12px 5% 24px; border-bottom:1px solid var(--ohm-line);
    box-shadow:0 20px 40px rgba(0,0,0,0.08); display:none; max-height:calc(100vh - 68px); overflow-y:auto; }
  .ohm-menu.open { display:flex; }
  .ohm-menu > li > a, .ohm-drop-btn { padding:14px 4px; font-size:1rem; width:100%; text-align:left; }
  .ohm-drop-panel { position:static; min-width:0; box-shadow:none; border:none; padding:4px 0 8px 16px;
    gap:8px; }
  .ohm-drop:hover .ohm-drop-panel { display:none; }
  .ohm-drop.open .ohm-drop-panel { display:flex; flex-direction:column; }
  .ohm-nav-cta .ohm-quote-btn { display:none; }
  .ohm-nav-inner { gap:12px; }
  .ohm-footer-grid { grid-template-columns:1fr 1fr; }
  .ohm-wa-float { right:16px; bottom:16px; padding:12px; }
  .ohm-wa-float span { display:none; }
}
@media (max-width:560px) {
  .ohm-footer-grid { grid-template-columns:1fr; }
  .lang-btn { padding:6px 8px; font-size:0.72rem; }
}


/* ===== Shared Components (sections / buttons / cards) ===== */
.ohm-wrap { max-width:1280px; margin:0 auto; padding:0 4%; }
.ohm-section { padding:88px 0; }
.ohm-section.ohm-alt { background:var(--ohm-bg); }
.ohm-section.ohm-dark { background:var(--ohm-black); color:#fff; }
.ohm-sec-head { max-width:720px; margin:0 auto 48px; text-align:center; }
.ohm-sec-head.ohm-left { margin-left:0; text-align:left; }
.ohm-eyebrow { display:inline-block; font-size:0.75rem; font-weight:700; letter-spacing:2.5px;
  text-transform:uppercase; color:var(--ohm-green); margin-bottom:12px; }
.ohm-sec-head h2 { font-size:2.2rem; font-weight:800; color:var(--ohm-black); margin:0 0 14px; line-height:1.2; }
.ohm-dark .ohm-sec-head h2 { color:#fff; }
.ohm-sec-head p { font-size:1.05rem; color:var(--ohm-gray); margin:0; line-height:1.7; }
.ohm-dark .ohm-sec-head p { color:#b9bec6; }

.ohm-btn { display:inline-flex; align-items:center; gap:8px; padding:14px 28px; border-radius:8px;
  font-weight:700; font-size:0.95rem; text-decoration:none; cursor:pointer; border:2px solid transparent;
  transition:all .2s; font-family:inherit; }
.ohm-btn-green { background:var(--ohm-green); color:#fff; }
.ohm-btn-green:hover { background:#009b69; transform:translateY(-1px); }
.ohm-btn-dark { background:var(--ohm-black); color:#fff; }
.ohm-btn-dark:hover { background:#000; transform:translateY(-1px); }
.ohm-btn-outline { background:transparent; color:var(--ohm-black); border-color:var(--ohm-black); }
.ohm-btn-outline:hover { background:var(--ohm-black); color:#fff; }
.ohm-btn-white { background:#fff; color:var(--ohm-black); }
.ohm-btn-white:hover { background:var(--ohm-green); color:#fff; }
.ohm-btn-ghost-w { background:transparent; color:#fff; border-color:rgba(255,255,255,.45); }
.ohm-btn-ghost-w:hover { border-color:#fff; }
.ohm-btn-sm { padding:10px 18px; font-size:0.85rem; }

/* Hero */
.ohm-hero { position:relative; min-height:88vh; display:flex; align-items:center;
  background:var(--ohm-black); color:#fff; padding:140px 0 90px; overflow:hidden; }
.ohm-hero-bg { position:absolute; inset:0; background-size:cover; background-position:center;
  opacity:.32; filter:saturate(.7); }
.ohm-hero-bg::after { content:''; position:absolute; inset:0;
  background:linear-gradient(105deg, rgba(10,11,12,.96) 30%, rgba(10,11,12,.55) 70%, rgba(10,11,12,.35)); }
.ohm-hero-inner { position:relative; max-width:1280px; margin:0 auto; padding:0 4%; width:100%; }
.ohm-hero h1 { font-size:3.4rem; font-weight:800; line-height:1.12; margin:0 0 20px; max-width:780px; }
.ohm-hero h1 .ohm-green { color:var(--ohm-green); }
.ohm-hero-sub { font-size:1.2rem; color:#cfd4da; max-width:600px; margin:0 0 26px; line-height:1.65; }
.ohm-trust { display:flex; flex-wrap:wrap; gap:10px 26px; margin:0 0 36px; padding:0; list-style:none; }
.ohm-trust li { display:flex; align-items:center; gap:8px; font-size:0.92rem; font-weight:600; color:#e6e9ed; }
.ohm-trust svg { width:18px; height:18px; fill:var(--ohm-green); flex:none; }
.ohm-hero-cta { display:flex; flex-wrap:wrap; gap:14px; }

/* Application cards */
.ohm-app-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; }
.ohm-app-card { position:relative; border-radius:14px; overflow:hidden; min-height:340px;
  display:flex; align-items:flex-end; text-decoration:none; color:#fff; background:var(--ohm-dark); }
.ohm-app-card img { position:absolute; inset:0; width:100%; height:100%; object-fit:cover;
  transition:transform .5s; }
.ohm-app-card:hover img { transform:scale(1.06); }
.ohm-app-card::after { content:''; position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(0,0,0,0) 30%, rgba(0,0,0,.88)); }
.ohm-app-body { position:relative; padding:26px; }
.ohm-app-body h3 { margin:0 0 8px; font-size:1.3rem; }
.ohm-app-body p { margin:0 0 14px; font-size:0.88rem; color:#d4d8dd; line-height:1.6; }
.ohm-app-link { font-weight:700; font-size:0.88rem; color:var(--ohm-green); }

/* Product cards */
.ohm-prod-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:26px; }
.ohm-prod-card { background:#fff; border:1px solid var(--ohm-line); border-radius:14px; overflow:hidden;
  display:flex; flex-direction:column; transition:box-shadow .25s, transform .25s; }
.ohm-prod-card:hover { box-shadow:0 14px 40px rgba(0,0,0,.1); transform:translateY(-4px); }
.ohm-prod-img { background:var(--ohm-bg); padding:26px; text-align:center; }
.ohm-prod-img img { max-width:100%; height:180px; object-fit:contain; }
.ohm-prod-body { padding:22px 24px 24px; display:flex; flex-direction:column; flex:1; }
.ohm-prod-tag { font-size:0.7rem; font-weight:700; letter-spacing:1.5px; text-transform:uppercase;
  color:var(--ohm-green); margin-bottom:6px; }
.ohm-prod-body h3 { margin:0 0 12px; font-size:1.08rem; color:var(--ohm-black); line-height:1.35; }
.ohm-spec-table { width:100%; border-collapse:collapse; margin:0 0 18px; font-size:0.85rem; }
.ohm-spec-table td { padding:5px 0; border-bottom:1px dashed var(--ohm-line); }
.ohm-spec-table td:first-child { color:var(--ohm-gray); width:42%; }
.ohm-spec-table td:last-child { font-weight:600; color:var(--ohm-black); }
.ohm-prod-actions { margin-top:auto; display:flex; gap:10px; }

/* Product visual (SVG placeholder — no third-party photos) */
.ohm-prod-img.ohm-pv { background:linear-gradient(135deg, #16181b, #23262b); padding:0; }
.ohm-pv-body { height:180px; display:flex; flex-direction:column; align-items:center;
  justify-content:center; gap:4px; }
.ohm-pv-body svg { width:74px; height:auto; margin-bottom:6px; }
.ohm-pv-v { color:#fff; font-weight:800; font-size:1.5rem; letter-spacing:.5px; }
.ohm-pv-c { color:var(--ohm-green); font-weight:700; font-size:0.9rem; letter-spacing:1px; }

/* Why grid */
.ohm-why-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.ohm-why-item { background:#fff; border:1px solid var(--ohm-line); border-radius:14px; padding:28px; }
.ohm-dark .ohm-why-item { background:var(--ohm-dark); border-color:#2b2e33; }
.ohm-why-num { font-size:0.8rem; font-weight:800; color:var(--ohm-green); letter-spacing:2px; margin-bottom:12px; }
.ohm-why-item h3 { margin:0 0 10px; font-size:1.1rem; color:var(--ohm-black); }
.ohm-dark .ohm-why-item h3 { color:#fff; }
.ohm-why-item p { margin:0; font-size:0.9rem; color:var(--ohm-gray); line-height:1.65; }
.ohm-dark .ohm-why-item p { color:#a8adb5; }

/* QC icon grid */
.ohm-qc-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:20px; margin-bottom:36px; }
.ohm-qc-item { background:#fff; border:1px solid var(--ohm-line); border-radius:14px; padding:26px 20px;
  text-align:center; }
.ohm-qc-item svg { width:34px; height:34px; fill:var(--ohm-green); margin-bottom:12px; }
.ohm-qc-item h3 { margin:0 0 6px; font-size:0.98rem; color:var(--ohm-black); }
.ohm-qc-item p { margin:0; font-size:0.8rem; color:var(--ohm-gray); line-height:1.55; }

/* Certifications */
.ohm-cert-row { display:grid; grid-template-columns:repeat(4,1fr); gap:20px; margin-bottom:30px; }
.ohm-cert { background:#fff; border:1px solid var(--ohm-line); border-radius:14px; padding:28px 22px;
  text-align:center; }
.ohm-cert-badge { width:60px; height:60px; margin:0 auto 14px; border:2px solid var(--ohm-black);
  border-radius:50%; display:flex; align-items:center; justify-content:center;
  font-weight:800; font-size:0.82rem; color:var(--ohm-black); letter-spacing:.5px; }
.ohm-cert h3 { margin:0 0 6px; font-size:1rem; color:var(--ohm-black); }
.ohm-cert p { margin:0 0 12px; font-size:0.8rem; color:var(--ohm-gray); line-height:1.5; }
.ohm-cert a { font-size:0.82rem; font-weight:700; color:var(--ohm-green); text-decoration:none; }
.ohm-cert-note { text-align:center; font-size:0.9rem; color:var(--ohm-gray); }
.ohm-cert-note a { color:var(--ohm-green); font-weight:600; }

/* Process steps */
.ohm-steps { display:grid; grid-template-columns:repeat(6,1fr); gap:14px; margin-top:44px; }
.ohm-step { background:var(--ohm-dark); border:1px solid #2b2e33; border-radius:12px; padding:22px 16px;
  text-align:center; position:relative; }
.ohm-step-num { width:34px; height:34px; margin:0 auto 12px; border-radius:50%; background:var(--ohm-green);
  color:#fff; font-weight:800; font-size:0.85rem; display:flex; align-items:center; justify-content:center; }
.ohm-step h3 { margin:0; font-size:0.92rem; color:#fff; }

/* OEM list */
.ohm-oem-grid { display:grid; grid-template-columns:1.1fr 1fr; gap:56px; align-items:center; }
.ohm-oem-list { display:grid; grid-template-columns:1fr 1fr; gap:12px; margin:26px 0 32px; padding:0; list-style:none; }
.ohm-oem-list li { display:flex; align-items:center; gap:10px; background:var(--ohm-dark);
  border:1px solid #2b2e33; border-radius:10px; padding:13px 16px; font-size:0.9rem; font-weight:600; color:#e6e9ed; }
.ohm-oem-list svg { width:16px; height:16px; fill:var(--ohm-green); flex:none; }
.ohm-dark p.ohm-lead { color:#b9bec6; font-size:1.05rem; line-height:1.7; margin:0; }

/* FAQ */
.ohm-faq { max-width:820px; margin:0 auto; }
.ohm-faq details { background:#fff; border:1px solid var(--ohm-line); border-radius:12px;
  margin-bottom:12px; overflow:hidden; }
.ohm-faq summary { padding:18px 22px; font-weight:700; font-size:0.98rem; color:var(--ohm-black);
  cursor:pointer; list-style:none; display:flex; justify-content:space-between; align-items:center; gap:16px; }
.ohm-faq summary::-webkit-details-marker { display:none; }
.ohm-faq summary::after { content:'+'; font-size:1.3rem; color:var(--ohm-green); font-weight:400; flex:none; }
.ohm-faq details[open] summary::after { content:'\2212'; }
.ohm-faq details p { padding:0 22px 20px; margin:0; font-size:0.92rem; color:var(--ohm-gray); line-height:1.7; }
.ohm-faq-more { text-align:center; margin-top:28px; }

/* Final CTA band */
.ohm-cta-band { background:linear-gradient(120deg, #0c0d0e, #1a1d20); color:#fff; text-align:center;
  padding:96px 4%; }
.ohm-cta-band h2 { font-size:2.4rem; font-weight:800; margin:0 0 16px; }
.ohm-cta-band p { color:#b9bec6; font-size:1.08rem; max-width:620px; margin:0 auto 34px; line-height:1.7; }
.ohm-cta-band .ohm-hero-cta { justify-content:center; }

/* Forms (RFQ / contact) */
.ohm-form { background:#fff; border:1px solid var(--ohm-line); border-radius:16px; padding:36px; }
.ohm-form-row { display:grid; grid-template-columns:1fr 1fr; gap:18px; }
.ohm-field { margin-bottom:18px; }
.ohm-field label { display:block; font-size:0.85rem; font-weight:700; color:var(--ohm-black); margin-bottom:7px; }
.ohm-field label .req { color:#d33; }
.ohm-field input, .ohm-field select, .ohm-field textarea { width:100%; padding:12px 14px;
  border:1px solid var(--ohm-line); border-radius:8px; font-family:inherit; font-size:0.92rem;
  color:var(--ohm-black); background:#fff; }
.ohm-field input:focus, .ohm-field select:focus, .ohm-field textarea:focus { outline:none;
  border-color:var(--ohm-green); box-shadow:0 0 0 3px rgba(0,181,120,.12); }
.ohm-field .hint { font-size:0.78rem; color:var(--ohm-gray); margin-top:5px; }
.ohm-form-note { font-size:0.82rem; color:var(--ohm-gray); margin:4px 0 18px; line-height:1.6; }

/* Legal pages */
.ohm-legal { max-width:820px; margin:0 auto; }
.ohm-legal h2 { font-size:1.35rem; color:var(--ohm-black); margin:38px 0 12px; }
.ohm-legal p, .ohm-legal li { font-size:0.95rem; color:var(--ohm-gray); line-height:1.8; }
.ohm-legal ul { padding-left:22px; }
.ohm-tbd { background:#fff8e6; border:1px solid #f0dfa8; border-radius:8px; padding:12px 16px;
  font-size:0.85rem; color:#7a6516; }

/* Page hero (inner pages) */
.ohm-page-hero { background:var(--ohm-black); color:#fff; padding:150px 0 70px; }
.ohm-page-hero h1 { font-size:2.6rem; font-weight:800; margin:0 0 14px; }
.ohm-page-hero p { color:#b9bec6; font-size:1.05rem; max-width:640px; margin:0; line-height:1.7; }

/* Filter pills (products page) */
.ohm-pills { display:flex; flex-wrap:wrap; gap:10px; justify-content:center; margin-bottom:40px; }
.ohm-pill { padding:9px 20px; border-radius:50px; border:1px solid var(--ohm-line); background:#fff;
  font-size:0.88rem; font-weight:600; color:var(--ohm-gray); text-decoration:none; cursor:pointer; }
.ohm-pill:hover { border-color:var(--ohm-green); color:var(--ohm-green); }
.ohm-pill.active { background:var(--ohm-black); color:#fff; border-color:var(--ohm-black); }

/* Responsive */
@media (max-width:1024px) {
  .ohm-app-grid { grid-template-columns:1fr 1fr; }
  .ohm-prod-grid { grid-template-columns:1fr 1fr; }
  .ohm-why-grid { grid-template-columns:1fr 1fr; }
  .ohm-qc-grid { grid-template-columns:1fr 1fr; }
  .ohm-cert-row { grid-template-columns:1fr 1fr; }
  .ohm-steps { grid-template-columns:1fr 1fr; }
  .ohm-oem-grid { grid-template-columns:1fr; gap:32px; }
  .ohm-hero h1 { font-size:2.5rem; }
  .ohm-section { padding:64px 0; }
}
@media (max-width:560px) {
  .ohm-app-grid, .ohm-prod-grid, .ohm-why-grid, .ohm-form-row { grid-template-columns:1fr; }
  .ohm-hero h1 { font-size:2rem; }
  .ohm-hero { min-height:0; padding:120px 0 64px; }
  .ohm-sec-head h2 { font-size:1.7rem; }
  .ohm-cta-band h2 { font-size:1.8rem; }
  .ohm-page-hero h1 { font-size:2rem; }
  .ohm-form { padding:24px; }
}