/* Deepam Bio Gas Agency - site styles */

:root {
  --maroon: #8B1A1A;
  --maroon-dark: #6E1313;
  --orange: #E8650A;
  --green: #1E5631;
  --green-dark: #163F24;
  --wa: #25D366;
  --wa-dark: #1DA851;

  --bg: #FFFFFF;
  --bg-alt: #F4F4F1;
  --ink: #222222;
  --ink-2: #444444;
  --ink-3: #6B6B6B;
  --navy: #222222;
  --line: #DCDCD7;
  --line-2: #C9C9C3;

  --max: 1140px;
  --pad: 20px;
  --radius: 3px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; overflow-x: hidden; overflow-x: clip; }

body {
  font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-2);
  background: var(--bg-alt);
  overflow-x: hidden;
  overflow-x: clip;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--ink);
  line-height: 1.25;
  font-weight: 700;
}
h1 { font-size: 2.4rem; }
h2 { font-size: 1.9rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.05rem; }
h5 { font-size: .95rem; }

p { margin: 0; }
a { color: var(--maroon); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; }
address { font-style: normal; }

.hidden { display: none !important; }
.grad-text { color: inherit; }
.reveal { opacity: 1; }

/* ---------- Top bar ---------- */
.topbar {
  background: var(--maroon-dark);
  color: #F3E7E7;
  font-size: .82rem;
}
.topbar-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 6px var(--pad);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.topbar a { color: #fff; }
.topbar span + span { margin-left: 18px; }

/* ---------- Header / nav ---------- */
.nav {
  background: #fff;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 50;
}
.nav.scrolled { box-shadow: 0 1px 4px rgba(0,0,0,0.08); }
.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 10px var(--pad);
  display: flex;
  align-items: center;
  gap: 24px;
  position: relative;
}
.nav-brand { display: flex; align-items: center; gap: 10px; color: var(--ink); }
.nav-brand:hover { text-decoration: none; }
.nav-brand img { width: 44px; height: 44px; }
.nav-brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.nav-brand-text strong { font-size: 1.1rem; color: var(--maroon); }
.nav-brand-text span { font-size: .72rem; color: var(--ink-3); text-transform: uppercase; letter-spacing: .04em; }

.nav-links { display: flex; align-items: center; gap: 2px; margin-left: auto; }
.nav-links a {
  font-size: .86rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .03em;
  color: var(--ink);
  padding: 8px 11px;
}
.nav-links a:hover { color: var(--maroon); text-decoration: none; }
.nav-cta {
  background: var(--maroon);
  color: #fff !important;
  border-radius: var(--radius);
  margin-left: 8px;
  padding: 9px 16px !important;
}
.nav-cta:hover { background: var(--maroon-dark); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  margin-left: auto;
}
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--ink); }

/* ---------- Hero ---------- */
#hero { position: relative; background: #1C1C1C; color: #fff; }
.hero-visual { position: absolute; inset: 0; z-index: 0; }
.hero-visual img, .hv-main-img { width: 100%; height: 100%; object-fit: cover; opacity: .38; }
.hero {
  position: static;
  max-width: var(--max);
  margin: 0 auto;
  padding: 72px var(--pad) 56px;
}
.hero-inner { max-width: 640px; position: relative; z-index: 1; }
.eyebrow {
  display: inline-block;
  font-size: .8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: #FFD9A8;
  margin-bottom: 14px;
}
.eyebrow .dot { display: none; }
.hero h1 { color: #fff; margin-bottom: 16px; }
.hero-sub { font-size: 1.08rem; color: #E6E6E6; margin-bottom: 26px; max-width: 560px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-stats {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
  margin-top: 40px;
  padding-top: 22px;
  border-top: 1px solid rgba(255,255,255,0.25);
}
.hero-stats div { display: flex; flex-direction: column; }
.hero-stats strong { font-size: 1.7rem; color: #fff; line-height: 1.1; }
.hero-stats span { font-size: .84rem; color: #CFCFCF; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: .95rem;
  border: 1px solid transparent;
  line-height: 1.2;
}
.btn:hover { text-decoration: none; }
.btn svg { width: 18px; height: 18px; fill: currentColor; stroke: currentColor; flex-shrink: 0; }
.btn-primary { background: var(--maroon); color: #fff; border-color: var(--maroon); }
.btn-primary:hover { background: var(--maroon-dark); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line-2); }
.btn-ghost:hover { background: #fff; border-color: var(--ink-3); }
#hero .btn-ghost { color: #fff; border-color: rgba(255,255,255,0.6); }
#hero .btn-ghost:hover { background: rgba(255,255,255,0.12); }
.btn-wa { background: var(--wa-dark); color: #fff; border-color: var(--wa-dark); }
.btn-wa:hover { background: #178A43; }

/* ---------- Credentials strip ---------- */
.strip-wrap { background: #fff; border-bottom: 1px solid var(--line); }
.strip {
  max-width: var(--max);
  margin: 0 auto;
  padding: 12px var(--pad);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 0;
  font-size: .84rem;
}
.strip-label {
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--maroon);
  margin-right: 18px;
  font-size: .76rem;
}
.strip-item { color: var(--ink-2); padding: 0 14px; border-left: 1px solid var(--line-2); }
.strip-item:first-of-type { border-left: 0; padding-left: 0; }

/* ---------- Sections ---------- */
.section { max-width: var(--max); margin: 0 auto; padding: 56px var(--pad); }
.section-wrap { }
.section-header { max-width: 720px; margin-bottom: 32px; }
.kicker {
  display: block;
  font-size: .78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--maroon);
  margin-bottom: 8px;
}
.section-header h2 { margin-bottom: 10px; padding-bottom: 12px; position: relative; }
.section-header h2::after {
  content: "";
  display: block;
  width: 56px;
  height: 3px;
  background: var(--maroon);
  position: absolute;
  left: 0;
  bottom: 0;
}
.section-header p { color: var(--ink-2); }

/* ---------- Services ---------- */
.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.service-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
}
.service-card-img { width: 100%; aspect-ratio: 16/9; object-fit: cover; border-bottom: 1px solid var(--line); }
.service-card-body { padding: 18px 18px 20px; display: flex; flex-direction: column; flex: 1; }
.s-icon { display: none; }
.service-card h3 { margin-bottom: 8px; font-size: 1.12rem; }
.service-card p { font-size: .92rem; margin-bottom: 12px; }
.check-list { margin: 0 0 14px; }
.check-list li {
  position: relative;
  padding-left: 18px;
  font-size: .9rem;
  margin-bottom: 5px;
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55em;
  width: 7px;
  height: 7px;
  background: var(--maroon);
}
.v-link { margin-top: auto; font-weight: 600; font-size: .9rem; }

/* ---------- Product features ---------- */
.product-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.product-feature.reverse .product-shot { order: 2; }
.product-shot { border: 1px solid var(--line); background: #fff; padding: 6px; }
.product-shot img { width: 100%; height: auto; }
.shot-glow, .hv-glow, .hv-chip, .mesh-bg { display: none; }
.product-copy h2 { margin-bottom: 4px; }
.product-copy .check-list { margin-top: 14px; }
.product-copy .check-list li { font-size: .95rem; }

/* ---------- Process ---------- */
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.why-card { background: #fff; border: 1px solid var(--line); padding: 22px 20px; border-top: 3px solid var(--maroon); }
.why-num { display: block; font-size: 1.6rem; font-weight: 700; color: var(--maroon); margin-bottom: 8px; }
.why-card h4 { margin-bottom: 8px; }
.why-card p { font-size: .92rem; }

/* ---------- Calculator ---------- */
.calc-wrap { background: var(--green-dark); color: #fff; padding: 32px; border-radius: var(--radius); }
.calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.calc-label { display: block; font-size: .88rem; color: #D6E2D9; margin-bottom: 6px; font-weight: 600; }
.calc-val-display { color: #FFD9A8; }
.calc-select, .calc-range { width: 100%; }
.calc-select {
  padding: 10px 12px;
  border: 1px solid rgba(255,255,255,0.3);
  background: #fff;
  color: var(--ink);
  font: inherit;
  border-radius: var(--radius);
}
.calc-range { accent-color: var(--orange); margin-top: 6px; }
.plant-rec { background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.18); padding: 14px 16px; }
.plant-rec strong { display: block; font-size: .78rem; text-transform: uppercase; letter-spacing: .05em; color: #D6E2D9; margin-bottom: 4px; }
.plant-rec span { color: #fff; font-weight: 600; }
.calc-results { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.calc-result-card { background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.18); padding: 16px; }
.result-val { font-size: 1.35rem; font-weight: 700; color: #fff; }
.result-label { font-size: .82rem; color: #D6E2D9; margin-top: 2px; }

/* ---------- Gallery ---------- */
.gallery-filter { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.gallery-filter-btn {
  padding: 8px 14px;
  border: 1px solid var(--line-2);
  background: #fff;
  color: var(--ink-2);
  font-size: .86rem;
  font-weight: 600;
  border-radius: var(--radius);
}
.gallery-filter-btn.active { background: var(--maroon); color: #fff; border-color: var(--maroon); }
.gallery-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.gallery-card { background: #fff; border: 1px solid var(--line); cursor: pointer; transition: opacity .25s; }
.gallery-card img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.gallery-card-overlay { padding: 10px 12px; border-top: 1px solid var(--line); }
.gallery-card-overlay p { font-size: .86rem; font-weight: 600; color: var(--ink); }

.lightbox {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(0,0,0,0.85);
  display: none;
  align-items: center; justify-content: center;
  padding: 20px;
}
.lightbox.active { display: flex; }
.lightbox-inner { position: relative; max-width: 960px; width: 100%; }
.lightbox-img { width: 100%; max-height: 75vh; object-fit: contain; background: #000; }
.lightbox-close {
  position: absolute; top: -40px; right: 0;
  color: #fff; font-size: 1.4rem; padding: 4px 8px;
}
.lightbox-caption { color: #fff; padding: 12px 0; }
.lightbox-caption p { color: #CFCFCF; font-size: .9rem; }

/* ---------- Subsidies ---------- */
.subsidy-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.subsidy-card { background: #fff; border: 1px solid var(--line); padding: 22px 20px; }
.subsidy-badge {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--green);
  border: 1px solid var(--green);
  padding: 3px 8px;
  margin-bottom: 12px;
}
.subsidy-card h4 { margin-bottom: 8px; }
.subsidy-card p { font-size: .92rem; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 820px; }
.faq-item { background: #fff; border: 1px solid var(--line); margin-bottom: -1px; }
.faq-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 16px 18px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
}
.faq-header:hover { background: #FAFAF8; }
.faq-icon { width: 18px; height: 18px; flex-shrink: 0; stroke: var(--maroon); transition: transform .2s; }
.faq-icon.rotate-180 { transform: rotate(180deg); }
.faq-content { padding: 0 18px 18px; font-size: .95rem; border-top: 1px solid var(--line); padding-top: 14px; }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: start; }
.about-card { background: #fff; border: 1px solid var(--line); padding: 24px; }
.about-logo { width: 64px; height: 64px; margin-bottom: 16px; }
.about-card dl > div { display: grid; grid-template-columns: 150px 1fr; gap: 12px; padding: 10px 0; border-top: 1px solid var(--line); font-size: .92rem; }
.about-card dl > div:first-child { border-top: 0; }
.about-card dt { font-weight: 700; color: var(--ink); }
.about-card dd { color: var(--ink-2); }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 32px; align-items: start; }
.contact-info { background: #fff; border: 1px solid var(--line); padding: 24px; }
.contact-info h3 { margin-bottom: 6px; }
.contact-info > p { font-size: .92rem; margin-bottom: 18px; }
.ci-row { display: flex; gap: 14px; padding: 14px 0; border-top: 1px solid var(--line); }
.ci-icon { width: 40px; height: 40px; border: 1px solid var(--line-2); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.ci-icon svg { width: 20px; height: 20px; fill: none; stroke: var(--maroon); stroke-width: 1.8; }
.ci-label { display: block; font-size: .74rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--ink-3); margin-bottom: 2px; }
.ci-row a { color: var(--ink); font-weight: 600; }
.ci-row address { font-size: .94rem; }

.contact-form {
  background: #fff;
  border: 1px solid var(--line);
  padding: 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.contact-form label { display: flex; flex-direction: column; gap: 6px; font-size: .88rem; font-weight: 600; color: var(--ink); }
.contact-form .span-2, .contact-form button, .contact-form .form-note { grid-column: 1 / -1; }
.contact-form input, .contact-form select, .contact-form textarea {
  font: inherit;
  font-weight: 400;
  padding: 10px 12px;
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
  width: 100%;
}
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { outline: 2px solid var(--maroon); outline-offset: 0; border-color: var(--maroon); }
.form-note { font-size: .82rem; color: var(--ink-3); text-align: center; }

/* ---------- Footer ---------- */
.footer { background: #2A2A2A; color: #CFCFCF; font-size: .9rem; }
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 44px var(--pad) 32px;
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 40px;
}
.foot-brand { display: flex; gap: 12px; align-items: flex-start; }
.foot-brand strong { color: #fff; display: block; margin-bottom: 6px; font-size: 1.05rem; }
.foot-brand p { font-size: .88rem; line-height: 1.6; }
.foot-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.foot-cols h5 { color: #fff; text-transform: uppercase; letter-spacing: .05em; font-size: .8rem; margin-bottom: 12px; }
.foot-cols li { margin-bottom: 7px; }
.foot-cols a { color: #CFCFCF; }
.foot-cols a:hover { color: #fff; }
.foot-base {
  border-top: 1px solid #3D3D3D;
  padding: 14px var(--pad);
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: .8rem;
  color: #9A9A9A;
}

/* ---------- WhatsApp float ---------- */
.wa-float { position: fixed; right: 20px; bottom: 20px; z-index: 60; display: flex; align-items: center; gap: 10px; }
.wa-float-label { display: none; }
.wa-float-btn {
  width: 54px; height: 54px;
  border-radius: 50%;
  background: var(--wa);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.25);
}
.wa-float-btn svg { width: 28px; height: 28px; fill: #fff; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: 1fr 1fr; }
  .why-grid { grid-template-columns: 1fr 1fr; }
  .gallery-grid { grid-template-columns: repeat(3, 1fr); }
  .subsidy-grid { grid-template-columns: 1fr 1fr; }

  .nav-toggle { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    background: #fff;
    border-bottom: 1px solid var(--line);
    padding: 6px var(--pad) 16px;
    box-shadow: 0 6px 12px rgba(0,0,0,0.08);
  }
  .nav.open .nav-links { display: flex; }
  .nav-links a { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .nav-cta { margin: 12px 0 0; text-align: center; border-bottom: 0 !important; }
}

@media (max-width: 820px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.6rem; }
  .section { padding: 44px var(--pad); }
  .hero { padding: 56px var(--pad) 44px; }
  .product-feature { grid-template-columns: 1fr; gap: 24px; }
  .product-feature.reverse .product-shot { order: 0; }
  .calc-grid { grid-template-columns: 1fr; gap: 28px; }
  .about-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .topbar-inner { justify-content: center; text-align: center; }
}

@media (max-width: 600px) {
  .services-grid, .why-grid, .subsidy-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .calc-wrap { padding: 22px 18px; }
  .calc-results { grid-template-columns: 1fr; }
  .contact-form { grid-template-columns: 1fr; padding: 18px; }
  .contact-info { padding: 18px; }
  .foot-cols { grid-template-columns: 1fr 1fr; }
  .hero-stats { gap: 20px 32px; }
  .about-card dl > div { grid-template-columns: 1fr; gap: 2px; }
  .topbar span + span { margin-left: 10px; }
  .strip-label { width: 100%; margin-bottom: 4px; }
  .strip-item { padding: 0 10px 0 0; border-left: 0; }
}

@media (max-width: 400px) {
  .gallery-grid { grid-template-columns: 1fr; }
  .foot-cols { grid-template-columns: 1fr; }
}