/* ==========================================================================
   HYDERABAD GENERATORS — INDUSTRIAL B2B DESIGN SYSTEM
   Ultra-fast, mobile-first, zero-framework CSS (Sub-0.2s load)
   ========================================================================== */

:root {
  --primary: #0b1c3d;
  --primary-dark: #07132a;
  --primary-light: #162c5b;
  --accent: #f59e0b;
  --accent-hover: #d97706;
  --accent-soft: #fef3c7;
  --whatsapp: #10b981;
  --whatsapp-hover: #059669;
  --danger: #ef4444;
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-light: #94a3b8;
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --border: #e2e8f0;
  --border-dark: #cbd5e1;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --radius: 8px;
  --radius-lg: 12px;
  --font-sans: 'Roboto', Arial, Helvetica, sans-serif;
  --font-heading: 'Roboto', Arial, Helvetica, sans-serif;
}

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


h1, h2, h3, h4, .logo-title, .brand-text, .btn, .spec-table th, .price-hero-val, .rent-hero-val, .price-val-buy, .price-val-rent, .badge-tag, .section-tag, .product-card-badge, .hero-badge-pill {
  font-family: var(--font-heading);
  letter-spacing: normal;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  padding-bottom: 72px; /* Space for mobile sticky CTA bar */
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ==========================================================================
   TOP ANNOUNCEMENT BAR & NAVIGATION
   ========================================================================== */
.top-bar {
  background-color: var(--primary-dark);
  color: #cbd5e1;
  font-size: 13px;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.top-info span {
  margin-right: 18px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.top-contacts {
  display: flex;
  align-items: center;
  gap: 15px;
}

.top-contacts a {
  color: #ffffff;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.top-contacts a:hover {
  color: var(--accent);
}

header {
  background-color: #ffffff;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 900;
  border-bottom: 1px solid var(--border);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 72px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo svg {
  width: 44px;
  height: 44px;
}

.brand-text h1, .brand-text .logo-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.1;
  letter-spacing: -0.5px;
}

.brand-text span {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-hover);
  letter-spacing: 0.8px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-menu a {
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
  transition: color 0.15s;
}

.nav-menu a:hover, .nav-menu a.active {
  color: var(--accent-hover);
}

.header-cta-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius);
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--primary-light);
}

.btn-accent {
  background-color: var(--accent);
  color: #0b1c3d;
}

.btn-accent:hover {
  background-color: var(--accent-hover);
  color: #ffffff;
}

.btn-whatsapp {
  background-color: var(--whatsapp);
  color: #ffffff;
}

.btn-whatsapp:hover {
  background-color: var(--whatsapp-hover);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--border-dark);
  color: var(--text-main);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background-color: var(--bg-page);
}

.btn-lg {
  padding: 14px 24px;
  font-size: 16px;
  border-radius: var(--radius-lg);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #ffffff;
  padding: 48px 0 54px;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  top: 0; right: 0; bottom: 0; left: 0;
  background-image: radial-gradient(rgba(245, 158, 11, 0.12) 1px, transparent 0);
  background-size: 24px 24px;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 40px;
  align-items: center;
  position: relative;
  z-index: 10;
}

.hero-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: rgba(245, 158, 11, 0.18);
  border: 1px solid rgba(245, 158, 11, 0.4);
  color: var(--accent);
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.hero h2 {
  font-size: 38px;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.hero h2 span {
  color: var(--accent);
}

.hero-lead {
  font-size: 18px;
  color: #cbd5e1;
  margin-bottom: 24px;
  line-height: 1.5;
}

.hero-usps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 28px;
}

.hero-usp-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 600;
  color: #f1f5f9;
}

.hero-usp-item svg {
  color: var(--whatsapp);
  flex-shrink: 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 24px;
}

/* Hero Quick Quote Card */
.hero-card {
  background-color: #ffffff;
  color: var(--text-main);
  padding: 28px;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.25);
  border-top: 4px solid var(--accent);
}

.hero-card h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 6px;
}

.hero-card p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.form-group {
  margin-bottom: 14px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  font-size: 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  background-color: #ffffff;
  color: var(--text-main);
  transition: border-color 0.2s;
  outline: none;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(11, 28, 61, 0.1);
}

/* ==========================================================================
   BRANDS TICKER / STRIP
   ========================================================================== */
.brand-strip {
  background-color: #ffffff;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}

.brand-strip-title {
  text-align: center;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 16px;
}

.brand-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px 36px;
}

.brand-logo-item img {
  height: 40px;
  width: auto;
  opacity: 0.9;
  filter: grayscale(10%);
  transition: opacity 0.2s, filter 0.2s;
}

.brand-logo-item img:hover {
  opacity: 1;
  filter: grayscale(0%);
}

/* ==========================================================================
   SECTION TITLES
   ========================================================================== */
.section {
  padding: 56px 0;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 40px;
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--accent-hover);
  margin-bottom: 8px;
}

.section-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.25;
  margin-bottom: 12px;
}

.section-lead {
  font-size: 16px;
  color: var(--text-muted);
}

/* ==========================================================================
   INDUSTRY-STANDARD B2B PRODUCT CARD SYSTEM (HYDERABAD GENERATORS)
   ========================================================================== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 28px;
}

@media (max-width: 768px) {
  .product-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

.product-card {
  background-color: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.06), 0 1px 3px rgba(15, 23, 42, 0.04);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.25s ease;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 35px -6px rgba(11, 28, 61, 0.13), 0 6px 14px rgba(11, 28, 61, 0.06);
  border-color: #cbd5e1;
}

.product-card-img-wrap {
  position: relative;
  background-color: #f8fafc;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-bottom: 1px solid #edf2f7;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px;
}

.product-card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.35s ease;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.06));
}

.product-card:hover .product-card-img-wrap img {
  transform: scale(1.04);
}

.product-card-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background-color: #0b1c3d;
  color: #ffffff;
  padding: 5px 11px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  box-shadow: 0 2px 6px rgba(11, 28, 61, 0.3);
}

.product-card-cpcb {
  position: absolute;
  top: 12px;
  right: 12px;
  background-color: #047857;
  color: #ffffff;
  padding: 5px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.5px;
  box-shadow: 0 2px 6px rgba(4, 120, 87, 0.3);
}

.product-card-body {
  padding: 22px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-card-title {
  font-size: 19px;
  font-weight: 800;
  color: #0b1c3d;
  margin: 0 0 8px 0;
  line-height: 1.3;
  min-height: 48px;
  display: flex;
  align-items: center;
}

.product-card-title a {
  color: #0b1c3d;
  text-decoration: none;
  transition: color 0.15s ease;
}

.product-card-title a:hover {
  color: #d97706;
}

.product-card-ideal {
  font-size: 13px;
  color: #64748b;
  margin: 0 0 16px 0;
  line-height: 1.45;
  min-height: 40px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-spec-chips {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 16px;
  background-color: #f8fafc;
  padding: 12px 14px;
  border: 1px solid #edf2f7;
  border-radius: 10px;
  box-shadow: inset 0 1px 2px rgba(15, 23, 42, 0.03);
}

.spec-chip {
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow: hidden;
}

.spec-chip-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  color: #64748b;
  letter-spacing: 0.3px;
}

.spec-chip-val {
  font-size: 13px;
  font-weight: 700;
  color: #0f172a;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* --- Industry-Standard Pricing Card with Subtle Shadows --- */
.product-pricing-card {
  margin-top: auto;
  margin-bottom: 16px;
  background-color: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 13px 15px;
  display: flex;
  flex-direction: column;
  gap: 9px;
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.04), inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.pricing-tier-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  width: 100%;
}

.pricing-tier-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  color: #64748b;
  letter-spacing: 0.4px;
  white-space: nowrap;
}

.pricing-tier-val {
  font-size: 15px;
  font-weight: 900;
  text-align: right;
  white-space: nowrap;
  letter-spacing: -0.2px;
}

.pricing-tier-val.buy-val {
  color: #0b1c3d;
}

.pricing-tier-val.rent-val {
  color: #047857;
}

.pricing-divider {
  height: 1px;
  background-color: #e2e8f0;
  width: 100%;
}

.product-card-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.product-card-actions .btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 12px;
  font-size: 13px;
  font-weight: 700;
  border-radius: 8px;
  text-align: center;
  white-space: nowrap;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}

.product-card-actions .btn-outline {
  border: 1.5px solid #cbd5e1;
  color: #0b1c3d;
  background: #ffffff;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.05);
}

.product-card-actions .btn-outline:hover {
  border-color: #0b1c3d;
  background: #0b1c3d;
  color: #ffffff;
  box-shadow: 0 3px 8px rgba(11, 28, 61, 0.15);
  transform: translateY(-1px);
}

.product-card-actions .btn-whatsapp {
  background-color: #25D366;
  color: #ffffff;
  border: 1.5px solid #25D366;
  box-shadow: 0 2px 6px rgba(37, 211, 102, 0.28);
}

.product-card-actions .btn-whatsapp:hover {
  background-color: #1ebd5b;
  border-color: #1ebd5b;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.38);
  transform: translateY(-1px);
}

/* ==========================================================================
   PRODUCT DETAIL PAGE & CAROUSEL
   ========================================================================== */
.breadcrumbs {
  padding: 14px 0;
  font-size: 13px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  background-color: #ffffff;
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.breadcrumbs li::after {
  content: "/";
  margin-left: 8px;
  color: var(--text-light);
}

.breadcrumbs li:last-child::after {
  content: "";
}

.breadcrumbs a:hover {
  color: var(--primary);
  text-decoration: underline;
}

.product-detail-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  padding: 36px 0 48px;
}

/* Interactive Image Carousel */
.carousel-container {
  background-color: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 16px;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 90px;
}

.carousel-stage {
  position: relative;
  background-color: #ffffff;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 16 / 10;
  margin-bottom: 12px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
}

.carousel-stage img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 10px;
  transition: opacity 0.25s ease;
}

.carousel-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background-color: rgba(11, 28, 61, 0.75);
  color: #ffffff;
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.2s;
  z-index: 10;
}

.carousel-nav-btn:hover {
  background-color: var(--accent);
  color: #0b1c3d;
}

.carousel-nav-btn.prev { left: 12px; }
.carousel-nav-btn.next { right: 12px; }

.carousel-caption-bar {
  background-color: var(--bg-page);
  padding: 8px 12px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  border-left: 3px solid var(--accent);
  margin-bottom: 14px;
}

.carousel-thumbs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.carousel-thumb {
  border: 2px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  background-color: #ffffff;
  aspect-ratio: 16 / 10;
  opacity: 0.7;
  transition: opacity 0.2s, border-color 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.carousel-thumb.active, .carousel-thumb:hover {
  opacity: 1;
  border-color: var(--accent);
}

.carousel-thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 4px;
}

/* Product Info Right Column */
.product-info-wrap h1 {
  font-size: 32px;
  font-weight: 900;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: 12px;
}

.product-badges-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 50px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-tag.cpcb {
  background-color: #ecfdf5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.badge-tag.brand {
  background-color: #eff6ff;
  color: #1e40af;
  border: 1px solid #bfdbfe;
}

.badge-tag.stock {
  background-color: #fef3c7;
  color: #92400e;
  border: 1px solid #fde68a;
}

.product-price-hero-card {
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--primary);
}

.price-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 18px;
}

.price-hero-val {
  font-size: 24px;
  font-weight: 900;
  color: var(--primary);
}

.rent-hero-val {
  font-size: 20px;
  font-weight: 900;
  color: var(--whatsapp-hover);
}

.product-cta-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

/* ==========================================================================
   TECHNICAL SPECIFICATION TABLE
   ========================================================================== */
.spec-table-wrap {
  background-color: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin-bottom: 32px;
}

.spec-table-header {
  background-color: var(--primary);
  color: #ffffff;
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.spec-table-header h3 {
  font-size: 18px;
  font-weight: 800;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.spec-table th, .spec-table td {
  padding: 12px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.spec-table th {
  background-color: var(--bg-page);
  color: var(--text-muted);
  font-weight: 700;
  width: 40%;
}

.spec-table td {
  color: var(--text-main);
  font-weight: 600;
}

.spec-table tr:last-child th, .spec-table tr:last-child td {
  border-bottom: none;
}

.spec-table tr:hover td {
  background-color: #f1f5f9;
}

/* Fuel Matrix */
.fuel-matrix-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 16px 0 28px;
}

.fuel-card {
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
}

.fuel-card-load {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.fuel-card-burn {
  font-size: 20px;
  font-weight: 900;
  color: var(--primary);
}

.fuel-card-cost {
  font-size: 12px;
  font-weight: 700;
  color: var(--whatsapp-hover);
}

/* ==========================================================================
   ACCORDION FAQS (GOOGLE RICH SNIPPETS)
   ========================================================================== */
.faq-section {
  margin-bottom: 40px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s;
}

.faq-item.active {
  border-color: var(--accent);
}

.faq-question {
  width: 100%;
  padding: 16px 20px;
  background: none;
  border: none;
  text-align: left;
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.faq-icon {
  font-size: 20px;
  font-weight: 400;
  color: var(--text-muted);
  transition: transform 0.2s;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: var(--accent-hover);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease-out;
  padding: 0 20px;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.6;
}

.faq-item.active .faq-answer {
  padding-bottom: 16px;
}

/* ==========================================================================
   LOCAL SERVICE AREAS BLOCK (PATANCHERU, AMEERPET, BALANAGAR, ETC.)
   ========================================================================== */
.local-network-block {
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-top: 40px;
}

.local-network-block h3 {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 12px;
}

.local-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.local-chip {
  background-color: var(--bg-page);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ==========================================================================
   STICKY MOBILE BOTTOM BAR (HIGH CONVERSION)
   ========================================================================== */
.mobile-sticky-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: #ffffff;
  box-shadow: 0 -4px 10px rgba(0, 0, 0, 0.12);
  padding: 10px 16px;
  z-index: 999;
  border-top: 1px solid var(--border);
}

.mobile-sticky-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
footer {
  background-color: var(--primary-dark);
  color: #cbd5e1;
  padding: 56px 0 32px;
  font-size: 14px;
  border-top: 4px solid var(--accent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr 1.2fr;
  gap: 36px;
  margin-bottom: 40px;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 16px;
  font-weight: 800;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--text-light);
}

/* ==========================================================================
   RESPONSIVE QUERIES
   ========================================================================== */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .product-detail-layout {
    grid-template-columns: 1fr;
  }
  .carousel-container {
    position: static;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .top-bar { display: none; }
  .nav-menu { display: none; }
  .mobile-sticky-bar { display: block; }
  .hero h2 { font-size: 28px; }
  .section-title { font-size: 26px; }
  .product-grid { grid-template-columns: 1fr; }
  .product-cta-block { grid-template-columns: 1fr; }
  .fuel-matrix-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}


/* ==========================================================================
   MODERN PROFESSIONAL B2B NAVIGATION & WHATSAPP
   ========================================================================== */
.main-header {
  background-color: #ffffff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
  position: relative;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-text .logo-title {
  font-size: 19px;
  font-weight: 900;
  color: var(--primary);
  line-height: 1.1;
  letter-spacing: -0.3px;
}

.brand-text .logo-sub {
  font-size: 10px;
  font-weight: 700;
  color: var(--accent-hover);
  letter-spacing: 0.8px;
  display: block;
}

/* Desktop Navigation */
.desktop-nav {
  display: flex;
  align-items: center;
}

.desktop-nav .nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.desktop-nav .nav-link {
  font-size: 15px;
  font-weight: 600;
  color: #1e293b;
  padding: 8px 14px;
  border-radius: var(--radius);
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.desktop-nav .nav-link:hover, .desktop-nav .nav-link.active {
  color: var(--primary);
  background-color: var(--bg-page);
}

/* Clean Dropdown Menu */
.has-dropdown {
  position: relative;
}

.arrow-down {
  font-size: 11px;
  color: var(--text-light);
  transition: transform 0.2s;
}

.has-dropdown:hover .arrow-down {
  transform: rotate(180deg);
  color: var(--primary);
}

.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  width: 320px;
  background-color: #ffffff;
  border-radius: var(--radius-lg);
  box-shadow: 0 14px 28px rgba(0,0,0,0.14), 0 10px 10px rgba(0,0,0,0.08);
  border: 1px solid var(--border);
  padding: 10px;
  z-index: 1001;
}

.has-dropdown:hover .nav-dropdown-menu {
  display: block;
}

.nav-dropdown-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius);
  transition: background-color 0.15s;
  color: var(--text-main);
}

.nav-dropdown-item:hover {
  background-color: #f1f5f9;
}

.drop-kva {
  background-color: var(--primary);
  color: #ffffff;
  font-size: 11px;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: 4px;
  min-width: 65px;
  text-align: center;
}

.drop-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
}

/* Header CTA Buttons */
.header-cta-group {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.btn-phone-call {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 14px;
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  background-color: #f8fafc;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.2s;
}

.btn-phone-call:hover {
  border-color: var(--primary);
  background-color: #ffffff;
}

/* Authentic WhatsApp Green with High Contrast */
.btn-whatsapp-official {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  font-size: 14px;
  font-weight: 800;
  color: #ffffff !important;
  background-color: #25D366;
  border-radius: var(--radius);
  box-shadow: 0 2px 4px rgba(37, 211, 102, 0.35);
  transition: all 0.2s;
  border: none;
  cursor: pointer;
}

.btn-whatsapp-official:hover {
  background-color: #1ea952;
  box-shadow: 0 4px 8px rgba(37, 211, 102, 0.45);
  transform: translateY(-1px);
}

/* Mobile Hamburger Toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2.5px;
  background-color: var(--primary);
  border-radius: 2px;
  transition: 0.2s;
}

/* Mobile Drawer */
.mobile-drawer {
  display: none;
  background-color: #ffffff;
  border-top: 1px solid var(--border);
  padding: 20px;
  box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
  max-height: 80vh;
  overflow-y: auto;
}

.mobile-drawer.active {
  display: block;
}

.mobile-nav-link {
  display: block;
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.mobile-nav-heading {
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--text-light);
  letter-spacing: 0.5px;
  margin: 16px 0 8px;
}

.mobile-prod-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.mobile-prod-item {
  font-size: 14px;
  font-weight: 600;
  color: #334155;
  padding: 8px 12px;
  background-color: var(--bg-page);
  border-radius: var(--radius);
}

/* High Contrast WhatsApp in Sticky Mobile Bottom Bar */
.btn-whatsapp {
  background-color: #25D366 !important;
  color: #ffffff !important;
  font-weight: 800 !important;
  box-shadow: 0 2px 6px rgba(37, 211, 102, 0.4) !important;
}

.btn-whatsapp:hover {
  background-color: #1ea952 !important;
}

/* Top bar styling */
.top-link {
  color: #f1f5f9;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
}

.top-link.whatsapp-top {
  color: #4ade80 !important;
  font-weight: 700;
}

@media (max-width: 992px) {
  .desktop-nav { display: none !important; }
  .btn-phone-call { display: none !important; }
  .btn-whatsapp-official span { display: none; }
  .btn-whatsapp-official { padding: 9px 12px; }
  .mobile-menu-toggle { display: flex !important; }
  .brand-text .logo-title { font-size: 17px; }
  .brand-text .logo-sub { font-size: 9px; }
}


.btn-whatsapp, .btn-whatsapp-official {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 8px !important;
  background-color: #25D366 !important;
  color: #ffffff !important;
  font-weight: 700 !important;
  text-decoration: none !important;
  border: none !important;
  box-shadow: 0 2px 4px rgba(37, 211, 102, 0.3) !important;
}

.btn-whatsapp:hover, .btn-whatsapp-official:hover {
  background-color: #1ea952 !important;
  color: #ffffff !important;
}

.btn-whatsapp svg, .btn-whatsapp-official svg {
  width: 20px !important;
  height: 20px !important;
  fill: #ffffff !important;
  flex-shrink: 0 !important;
  vertical-align: middle !important;
  display: inline-block !important;
}


/* ==========================================================================
   PERFECT RESPONSIVE & MOBILE OVERFLOW FIXES
   ========================================================================== */
html, body {
  overflow-x: hidden !important;
  width: 100% !important;
  max-width: 100vw !important;
  position: relative;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

.spec-table-wrap {
  overflow-x: auto !important;
  -webkit-overflow-scrolling: touch;
  width: 100%;
}

@media (max-width: 992px) {
  .contact-grid {
    grid-template-columns: 1fr !important;
  }
}

@media (max-width: 768px) {
  /* Clean, spacious mobile header: Logo on left, Hamburger on right */
  .header-cta-group .btn-whatsapp-official {
    display: none !important;
  }
  
  .navbar {
    height: 60px !important;
  }

  .brand-logo svg {
    width: 36px !important;
    height: 36px !important;
  }

  .brand-text .logo-title {
    font-size: 15px !important;
  }

  .brand-text .logo-sub {
    font-size: 8px !important;
    letter-spacing: 0.5px !important;
  }

  .mobile-menu-toggle {
    display: flex !important;
    padding: 6px !important;
  }

  /* Prevent two-column overflows on mobile */
  .contact-grid {
    grid-template-columns: 1fr !important;
    gap: 24px !important;
  }

  .price-hero-grid {
    grid-template-columns: 1fr !important;
    gap: 12px !important;
  }

  .hero-usps {
    grid-template-columns: 1fr !important;
  }

  .hero {
    padding: 28px 0 36px !important;
  }

  .section {
    padding: 36px 0 !important;
  }

  .local-network-block {
    padding: 20px !important;
  }
}