/* Biovardhan Energy Solutions — theme on top of Bootstrap 5.3 */
:root {
  --green-950: #072319;
  --green-900: #0b3326;
  --green-800: #0f4a35;
  --green-700: #14603f;
  --green-600: #1d7a4c;
  --green-500: #2e9a4f;
  --green-100: #e3f2e7;
  --green-50: #f2f9f4;
  --gold: #e3a72f;
  --gold-600: #c98d17;
  --gold-100: #fcf1d9;
  --ink: #14211b;
  --muted: #55655c;
  --line: #dce7e0;
  --bg-alt: #f5f9f6;
  --radius: 14px;
  --shadow: 0 12px 32px rgba(11, 51, 38, .09);
  --shadow-sm: 0 4px 14px rgba(11, 51, 38, .07);
  --font: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --bs-body-font-family: var(--font);
  --bs-body-color: var(--ink);
  --bs-body-bg: #fff;
  --bs-link-color: var(--green-700);
  --bs-link-color-rgb: 20, 96, 63;
  --bs-link-hover-color: var(--green-500);
  --bs-link-hover-color-rgb: 46, 154, 79;
  --bs-border-color: var(--line);
  --bs-primary: var(--green-700);
  --bs-primary-rgb: 20, 96, 63;
}

body { font-size: 1.0625rem; line-height: 1.65; overflow-x: hidden; }
img, svg { max-width: 100%; height: auto; }
a { text-underline-offset: 3px; text-decoration-thickness: 1px; }
h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 .6em; color: var(--green-950); letter-spacing: -.01em; }
h1 { font-size: clamp(2rem, 4.4vw, 3.25rem); font-weight: 800; }
h2 { font-size: clamp(1.55rem, 3vw, 2.25rem); font-weight: 800; }
h3 { font-size: 1.2rem; font-weight: 700; }
strong { color: var(--green-950); }
.container { max-width: 1200px; }
.section { padding: 80px 0; }
.section--tight { padding: 56px 0; }
.section--alt { background: var(--bg-alt); }
.section--dark { background: var(--green-900); color: #dcebe2; }
.section--dark h2, .section--dark h3, .section--dark strong { color: #fff; }
.section-head { max-width: 760px; margin-bottom: 40px; }
.eyebrow { display: inline-block; font-size: .78rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--green-600); margin-bottom: 12px; }
.section--dark .eyebrow, .hero .eyebrow { color: var(--gold); }
.lead { font-size: 1.13rem; font-weight: 400; color: var(--muted); }
.section--dark .lead { color: #b9d2c3; }
.skip-link { position: absolute; left: -999px; top: 0; background: #fff; padding: 8px 14px; z-index: 2000; }
.skip-link:focus { left: 10px; }

/* Buttons */
.btn { border-radius: 999px; font-weight: 700; padding: 12px 22px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; transition: transform .15s ease, background .15s ease; }
.btn:hover { transform: translateY(-1px); }
.btn-gold { background: var(--gold); color: var(--green-950); border: 2px solid var(--gold); box-shadow: 0 8px 20px rgba(227, 167, 47, .3); }
.btn-gold:hover, .btn-gold:focus { background: #f0b63e; border-color: #f0b63e; color: var(--green-950); }
.btn-green { background: var(--green-700); color: #fff; border: 2px solid var(--green-700); }
.btn-green:hover { background: var(--green-600); border-color: var(--green-600); color: #fff; }
.btn-ghost { border: 2px solid rgba(255, 255, 255, .45); color: #fff; background: transparent; }
.btn-ghost:hover { background: rgba(255, 255, 255, .1); color: #fff; border-color: #fff; }
.btn-outline-green { border: 2px solid var(--green-700); color: var(--green-700); background: transparent; }
.btn-outline-green:hover { background: var(--green-700); color: #fff; }

/* Top bar + navbar */
.topbar { background: var(--green-950); color: #b9d2c3; font-size: .85rem; padding: 7px 0; }
.topbar a { color: #e6f2ea; text-decoration: none; }
.topbar a:hover { color: var(--gold); }
.site-header { position: sticky; top: 0; z-index: 1030; background: rgba(255, 255, 255, .97); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.site-header .navbar { min-height: 74px; padding: 0; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--green-950); }
.logo svg { width: 42px; height: 42px; flex: none; }
.logo .logo-img { height: 60px; width: auto; max-width: 220px; object-fit: contain; flex: none; }
.site-footer .logo .logo-img { background: #fff; border-radius: 50%; padding: 3px; height: 72px; }
.logo-text { display: flex; flex-direction: column; line-height: 1.05; }
.logo-text b { font-size: 1.28rem; letter-spacing: .02em; font-weight: 800; }
.logo-text small { font-size: .66rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); font-weight: 600; margin-top: 3px; }
.site-header .nav-link { font-weight: 600; font-size: .94rem; color: var(--ink); padding: 10px 12px !important; border-radius: 8px; }
.site-header .nav-link:hover, .site-header .nav-link.active, .site-header .nav-link:focus { color: var(--green-700); background: var(--green-50); }
.site-header .dropdown-menu { border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); padding: 8px; min-width: 280px; }
.site-header .dropdown-item { border-radius: 8px; padding: 9px 12px; font-weight: 500; font-size: .94rem; white-space: normal; }
.site-header .dropdown-item:hover, .site-header .dropdown-item.active { background: var(--green-50); color: var(--green-700); }
.navbar-toggler { border: 0; padding: 8px; }
.navbar-toggler:focus { box-shadow: 0 0 0 3px var(--green-100); }
@media (min-width: 1200px) {
  .site-header .dropdown:hover > .dropdown-menu { display: block; margin-top: 0; }
}
@media (max-width: 1199.98px) {
  .site-header .navbar-collapse { max-height: calc(100vh - 80px); overflow-y: auto; padding: 8px 0 20px; }
  .site-header .dropdown-menu { box-shadow: none; border: 0; padding: 0 0 6px 12px; }
}

/* Hero */
.hero { position: relative; color: #dcebe2; overflow: hidden;
  background: radial-gradient(1000px 500px at 85% -10%, rgba(46, 154, 79, .35), transparent 60%),
              radial-gradient(700px 400px at -10% 110%, rgba(227, 167, 47, .14), transparent 60%),
              linear-gradient(160deg, var(--green-900), var(--green-950)); }
.hero::before { content: ""; position: absolute; inset: 0; opacity: .07; pointer-events: none; background-image: radial-gradient(#fff 1px, transparent 1px); background-size: 22px 22px; }
.hero .container { position: relative; }
.hero h1 { color: #fff; }
.hero h1 em { font-style: normal; color: var(--gold); }
.hero-pad { padding-top: 84px; padding-bottom: 92px; }
.hero .lead { color: #c3dacb; font-size: 1.16rem; }
.hero .lead strong { color: #fff; }
.hero-badges { display: flex; flex-wrap: wrap; gap: 10px; margin: 26px 0 30px; padding: 0; list-style: none; }
.hero-badges li { font-size: .85rem; font-weight: 600; padding: 7px 13px; border-radius: 999px; background: rgba(255, 255, 255, .07); border: 1px solid rgba(255, 255, 255, .14); color: #e3efe7; }
.hero-visual { background: rgba(255, 255, 255, .05); border: 1px solid rgba(255, 255, 255, .12); border-radius: 22px; padding: 22px; box-shadow: 0 30px 60px rgba(0, 0, 0, .25); }
.page-hero-inner { padding-top: 56px; padding-bottom: 60px; max-width: 860px; }
.page-hero h1 { font-size: clamp(1.9rem, 3.8vw, 2.85rem); }
.crumbs { font-size: .85rem; margin-bottom: 18px; }
.crumbs ol { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 6px; color: #9fbfac; }
.crumbs li + li::before { content: "›"; margin-right: 6px; color: #6f957f; }
.crumbs a { color: #cfe3d6; text-decoration: none; }
.crumbs a:hover { color: var(--gold); }
.updated { font-size: .85rem; color: #9fbfac; margin: 14px 0 0; }

/* Stats */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); }
.stat { background: #fff; padding: 26px 22px; }
.stat b { display: block; font-size: 2rem; font-weight: 800; color: var(--green-700); line-height: 1.1; }
.stat span { display: block; font-size: .92rem; color: var(--muted); margin-top: 6px; }
.source { font-size: .8rem; color: var(--muted); margin-top: 12px; }

/* Content grids & cards */
.grid-2, .grid-3, .grid-4 { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); gap: 20px; }
.prose .grid-2, .prose .grid-3 { margin: 0 0 1.6em; }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow-sm); transition: transform .18s ease, box-shadow .18s ease; display: block; }
a.card { text-decoration: none; color: inherit; }
a.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); color: inherit; }
.card h3 { margin-bottom: .45em; }
.card p { color: var(--muted); margin-bottom: 0; }
.card .more { display: inline-block; margin-top: 14px; font-weight: 700; color: var(--green-700); font-size: .93rem; }
.icon { width: 50px; height: 50px; border-radius: 13px; display: grid; place-items: center; background: var(--green-100); color: var(--green-700); margin-bottom: 18px; }
.icon svg { width: 26px; height: 26px; }
.card--dark { background: rgba(255, 255, 255, .05); border-color: rgba(255, 255, 255, .12); box-shadow: none; }
.card--dark p { color: #b9d2c3; }
.card--dark .icon { background: rgba(227, 167, 47, .15); color: var(--gold); }
.tag { display: inline-block; font-size: .75rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--gold-600); background: var(--gold-100); padding: 4px 10px; border-radius: 999px; margin-bottom: 12px; }

.check-list { list-style: none; padding: 0; }
.check-list li { position: relative; padding-left: 30px; margin-bottom: .6em; }
.check-list li::before { content: ""; position: absolute; left: 0; top: .32em; width: 18px; height: 18px; border-radius: 50%;
  background: var(--green-100) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%231d7a4c'%3E%3Cpath d='M8 13.6 4.4 10l-1.4 1.4L8 16.4l9-9-1.4-1.4z'/%3E%3C/svg%3E") center/13px no-repeat; }
.section--dark .check-list li::before, .chain-col.is-core .check-list li::before { background-color: rgba(227, 167, 47, .2); }
.cols-2 { columns: 2; column-gap: 32px; }
.cols-2 li { break-inside: avoid; }

/* Value chain + flows */
.chain { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.chain-col { border-radius: var(--radius); padding: 26px; border: 1px solid var(--line); background: #fff; }
.chain-col h3 { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.chain-col h3 span { font-size: .72rem; letter-spacing: .1em; padding: 4px 9px; border-radius: 999px; background: var(--green-100); color: var(--green-700); }
.chain-col.is-core { background: var(--green-900); border-color: var(--green-900); }
.chain-col.is-core h3 { color: #fff; }
.chain-col.is-core h3 span { background: var(--gold); color: var(--green-950); }
.chain-col.is-core li { color: #d5e7dc; }
.flow { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 0 0 1em; padding: 0; list-style: none; }
.flow li { background: #fff; border: 1px solid var(--line); border-radius: 999px; padding: 8px 15px; font-weight: 600; font-size: .9rem; color: var(--green-900); }
.flow li:not(:last-child)::after { content: "→"; margin-left: 12px; color: var(--green-500); font-weight: 800; }
.flow li.hl { background: var(--green-700); color: #fff; border-color: var(--green-700); }
.flow li.hl-gold { background: var(--gold); border-color: var(--gold); color: var(--green-950); }

/* Steps */
.steps { counter-reset: step; list-style: none; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 1.4em; }
.steps li { counter-increment: step; background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 18px 18px 18px 64px; position: relative; font-weight: 600; color: var(--green-950); }
.steps li::before { content: counter(step, decimal-leading-zero); position: absolute; left: 16px; top: 15px; width: 36px; height: 36px; border-radius: 10px; background: var(--green-100); color: var(--green-700); display: grid; place-items: center; font-size: .85rem; font-weight: 800; }
.steps li small { display: block; font-weight: 500; color: var(--muted); margin-top: 4px; font-size: .88rem; line-height: 1.5; }
.prose .steps { grid-template-columns: repeat(2, 1fr); }

/* Capacity chips */
.capacity { display: flex; flex-wrap: wrap; gap: 12px; list-style: none; padding: 0; margin: 0 0 8px; }
.capacity li { padding: 14px 20px; border-radius: 12px; background: #fff; border: 1px solid var(--line); font-weight: 800; color: var(--green-800); font-size: 1.15rem; }
.capacity li small { display: block; font-weight: 600; font-size: .72rem; color: var(--muted); letter-spacing: .06em; text-transform: uppercase; }

/* Tables */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); margin: 0 0 1.4em; }
.table-wrap table { width: 100%; border-collapse: collapse; font-size: .95rem; min-width: 560px; margin: 0; }
.table-wrap th, .table-wrap td { text-align: left; padding: 13px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
.table-wrap th { background: var(--green-50); color: var(--green-900); font-weight: 700; }
.table-wrap tr:last-child td { border-bottom: 0; }

/* Article layout */
.prose h2 { margin-top: 1.6em; font-size: clamp(1.4rem, 2.6vw, 1.85rem); scroll-margin-top: 100px; }
.prose > h2:first-child, .prose .keybox h2 { margin-top: 0; }
.prose h3 { margin-top: 1.4em; }
.prose .card h3 { margin-top: 0; }
.prose p, .prose li { color: #26352d; }
.note { border-left: 4px solid var(--gold); background: var(--gold-100); padding: 16px 20px; border-radius: 0 12px 12px 0; margin: 1.4em 0; font-size: .96rem; }
.note p:last-child { margin-bottom: 0; }
.keybox { background: var(--green-50); border: 1px solid var(--green-100); border-radius: var(--radius); padding: 22px 24px; margin: 0 0 1.8em; }
.keybox h2 { font-size: 1.1rem; }
.keybox ul, .keybox p:last-child { margin-bottom: 0; }
.toc { border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 22px; margin-bottom: 2em; }
.toc b { display: block; margin-bottom: 8px; color: var(--green-950); }
.toc ol { margin: 0; }
.toc a { text-decoration: none; }
.sidebar { position: sticky; top: 100px; display: grid; gap: 20px; }
.side-card { border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; background: #fff; }
.side-card.dark { background: var(--green-900); border-color: var(--green-900); color: #cfe3d6; }
.side-card.dark h3 { color: #fff; }
.side-card h3 { font-size: 1.08rem; }
.side-card ul { list-style: none; padding: 0; margin: 0; }
.side-card li { border-bottom: 1px solid var(--line); }
.side-card li:last-child { border-bottom: 0; }
.side-card li a { display: block; padding: 9px 0; text-decoration: none; font-weight: 600; font-size: .93rem; }
.side-card .btn { width: 100%; margin-top: 10px; }

/* FAQ accordion */
.faq.accordion { --bs-accordion-border-color: var(--line); --bs-accordion-active-bg: var(--green-50); --bs-accordion-active-color: var(--green-950); --bs-accordion-btn-focus-box-shadow: 0 0 0 3px var(--green-100); max-width: 900px; }
.faq .accordion-item { border-radius: 12px !important; margin-bottom: 10px; border: 1px solid var(--line); overflow: hidden; }
.faq .accordion-button { font-weight: 700; color: var(--green-950); font-size: 1.02rem; padding: 18px 22px; }
.faq .accordion-body { color: var(--muted); padding: 0 22px 18px; }
.faq .accordion-button:not(.collapsed) { box-shadow: none; }

/* Forms & contact */
.contact-card { background: #fff; border-radius: 18px; padding: 32px; box-shadow: var(--shadow); border: 1px solid var(--line); }
.contact-card .form-label { font-size: .85rem; font-weight: 700; color: var(--green-950); margin-bottom: 5px; }
.contact-card .form-control, .contact-card .form-select { padding: 11px 14px; border-radius: 10px; border-color: #c9d8cf; }
.contact-card .form-control:focus, .contact-card .form-select:focus { border-color: var(--green-500); box-shadow: 0 0 0 3px var(--green-100); }
.hp-field { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; overflow: hidden; }
.contact-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 16px; }
.contact-list li { display: flex; gap: 14px; align-items: flex-start; }
.contact-list .icon { margin: 0; flex: none; width: 44px; height: 44px; }
.contact-list b { display: block; color: var(--green-950); }

/* CTA band */
.cta-band { background: linear-gradient(120deg, var(--green-800), var(--green-950)); color: #cfe3d6; border-radius: 22px; padding: 48px; display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: center; position: relative; overflow: hidden; }
.cta-band::after { content: ""; position: absolute; right: -80px; top: -80px; width: 260px; height: 260px; border-radius: 50%; background: rgba(227, 167, 47, .14); }
.cta-band h2 { color: #fff; margin-bottom: .3em; }
.cta-band p { margin: 0; }
.cta-band .btn-row { position: relative; z-index: 1; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

.hindi { font-family: "Noto Sans Devanagari", var(--font); }

/* Footer */
.site-footer { background: var(--green-950); color: #a9c4b4; font-size: .93rem; padding: 64px 0 0; }
.site-footer h4 { color: #fff; font-size: 1rem; margin-bottom: 14px; }
.site-footer a { color: #cfe3d6; text-decoration: none; }
.site-footer a:hover { color: var(--gold); }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 9px; }
.site-footer .logo { color: #fff; margin-bottom: 16px; }
.site-footer .logo-text small { color: #8fb39f; }
.site-footer strong { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .1); margin-top: 48px; padding: 20px 0; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: .85rem; }

.wa-float { position: fixed; right: 18px; bottom: 18px; z-index: 1040; width: 56px; height: 56px; border-radius: 50%; background: #25d366; display: grid; place-items: center; box-shadow: 0 10px 24px rgba(0, 0, 0, .25); transition: transform .15s; }
.wa-float svg { width: 30px; height: 30px; fill: #fff; }
.wa-float:hover { transform: scale(1.06); }

/* Responsive */
@media (max-width: 991.98px) {
  .grid-3, .grid-4, .chain, .steps { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .cta-band { grid-template-columns: 1fr; padding: 36px 28px; }
  .sidebar { position: static; }
  .hero-pad { padding-top: 56px; padding-bottom: 64px; }
}
@media (max-width: 575.98px) {
  body { font-size: 1rem; }
  .section { padding: 56px 0; }
  .grid-2, .grid-3, .grid-4, .chain, .steps, .prose .steps { grid-template-columns: 1fr; }
  .cols-2 { columns: 1; }
  .card, .contact-card { padding: 22px; }
  .stat b { font-size: 1.6rem; }
  .logo-text small { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; scroll-behavior: auto !important; }
}
.capacity li a { color: inherit; display: block; }
.capacity li:has(a) { border-color: var(--green-500); background: var(--green-50); }