/* ==========================================================================
   BHARAT FLANGES - MODERN INDUSTRIAL DESIGN SYSTEM (SIMPLIFIED & CLEAN)
   Industry-standard, minimalist, high-performance, and responsive.
   Brand Colors: Navy (#073B78), Blue (#0877D1), Orange (#FF8A1D), Bg (#F8FAFD)
   ========================================================================== */

:root {
  /* Brand Palette */
  --primary-navy: #073B78;
  --primary-navy-dark: #05264F;
  --primary-blue: #0877D1;
  --primary-blue-hover: #0660a9;
  --light-blue: #F0F7FF;
  --light-blue-subtle: #F5FAFF;
  --orange-accent: #FF8A1D;
  --orange-hover: #E8770F;

  /* Surfaces & Backgrounds */
  --bg-page: #F8FAFD;
  --bg-white: #FFFFFF;
  --bg-slate: #F1F5F9;
  
  /* Text */
  --text-primary: #0F233B;
  --text-secondary: #5A6E85;
  --text-muted: #8E9FAA;
  --text-white: #FFFFFF;

  /* Borders & Shadows */
  --border-subtle: #E2EBF2;
  --border-focus: #0877D1;
  --shadow-subtle: 0 2px 10px rgba(7, 59, 120, 0.04);
  --shadow-card: 0 8px 30px rgba(7, 59, 120, 0.06);
  --shadow-card-hover: 0 16px 40px rgba(7, 59, 120, 0.12);
  --shadow-btn: 0 4px 14px rgba(7, 59, 120, 0.18);
  --shadow-accent: 0 6px 20px rgba(255, 138, 29, 0.28);

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-pill: 9999px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow {
  max-width: 860px;
}

/* --------------------------------------------------------------------------
   Header & Single Clean Logo (No Duplicate Text)
   -------------------------------------------------------------------------- */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: var(--transition-smooth);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 4px 20px rgba(7, 59, 120, 0.06);
}

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

.brand-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.brand-logo-img {
  height: 44px;
  width: auto;
  object-fit: contain;
  display: block;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 0.925rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 6px 0;
  position: relative;
  transition: var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: var(--primary-navy);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2.5px;
  background: var(--primary-blue);
  border-radius: var(--radius-pill);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  color: var(--primary-navy);
  cursor: pointer;
  padding: 6px;
}

/* --------------------------------------------------------------------------
   Buttons (Refined & Modern)
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 0.9rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition-smooth);
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--primary-navy-dark);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: var(--shadow-btn);
}

.btn-accent {
  background: var(--orange-accent);
  color: #FFFFFF;
}

.btn-accent:hover {
  background: var(--orange-hover);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: var(--shadow-accent);
}

.btn-outline {
  background: transparent;
  border-color: var(--border-subtle);
  color: var(--text-primary);
}

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

.btn-outline-white {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.3);
  color: #FFFFFF;
  backdrop-filter: blur(8px);
}

.btn-outline-white:hover {
  background: #FFFFFF;
  color: var(--primary-navy);
  transform: translateY(-2px);
}

.btn-whatsapp {
  background: #25D366;
  color: #FFFFFF;
}

.btn-whatsapp:hover {
  background: #20BD5A;
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.3);
}

.btn-sm {
  padding: 7px 14px;
  font-size: 0.825rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 13px 26px;
  font-size: 1rem;
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  background: linear-gradient(145deg, #073B78 0%, #05264F 100%);
  color: #FFFFFF;
  padding: 85px 0 95px;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, rgba(8, 119, 209, 0.18) 0%, transparent 70%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 50px;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.825rem;
  font-weight: 700;
  color: #E2E8F0;
  margin-bottom: 22px;
}

.hero-badge .pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--orange-accent);
  box-shadow: 0 0 0 0 rgba(255, 138, 29, 0.7);
  animation: pulse-ring 2s infinite;
}

@keyframes pulse-ring {
  0% { box-shadow: 0 0 0 0 rgba(255, 138, 29, 0.6); }
  70% { box-shadow: 0 0 0 10px rgba(255, 138, 29, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 138, 29, 0); }
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1.2px;
  margin-bottom: 18px;
  color: #FFFFFF;
}

.hero-title .accent-text {
  color: var(--orange-accent);
}

.hero-desc {
  font-size: 1.125rem;
  line-height: 1.65;
  color: #D3E0EA;
  margin-bottom: 32px;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.hero-trust-bar {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 0.875rem;
  color: #CBD5E1;
  font-weight: 600;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 24px;
}

.trust-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.trust-item i {
  color: var(--orange-accent);
}

/* Hero Product Spotlight (No duplicate brand name) */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-product-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-xl);
  padding: 24px;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(12px);
  width: 100%;
  max-width: 420px;
  transition: var(--transition-smooth);
}

.hero-product-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.3);
}

.hero-product-preview {
  position: relative;
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 210px;
  margin-bottom: 18px;
  box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.04);
}

.hero-product-preview img {
  max-height: 100%;
  object-fit: contain;
  transition: transform 0.4s ease;
}

.hero-product-card:hover .hero-product-preview img {
  transform: scale(1.06);
}

.hero-product-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--light-blue);
  color: var(--primary-blue);
  font-size: 0.72rem;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
}

.hero-product-details h3 {
  font-size: 1.15rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 4px;
}

.hero-product-details p {
  font-size: 0.85rem;
  color: #CBD5E1;
  margin-bottom: 12px;
}

.hero-specs-row {
  display: flex;
  gap: 16px;
  font-size: 0.8rem;
  color: #94A3B8;
  font-weight: 600;
}

.hero-specs-row span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-specs-row i {
  color: #25D366;
}

/* --------------------------------------------------------------------------
   Clean Trust Banner
   -------------------------------------------------------------------------- */
.trust-strip {
  background: #FFFFFF;
  border-bottom: 1px solid var(--border-subtle);
  padding: 24px 0;
}

.trust-strip-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.trust-strip-card {
  display: flex;
  align-items: center;
  gap: 14px;
}

.trust-strip-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--light-blue);
  color: var(--primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.trust-strip-card h4 {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--primary-navy);
  line-height: 1.2;
}

.trust-strip-card p {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   Section Layouts
   -------------------------------------------------------------------------- */
.section {
  padding: 80px 0;
}

.section-title-wrap {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 48px;
}

.section-tag {
  display: inline-block;
  background: var(--light-blue);
  color: var(--primary-blue);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--primary-navy);
  letter-spacing: -0.6px;
  line-height: 1.2;
  margin-bottom: 12px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   Products Grid
   -------------------------------------------------------------------------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.product-item {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-subtle);
  transition: var(--transition-smooth);
}

.product-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(8, 119, 209, 0.35);
}

.product-img-box {
  width: 100%;
  height: 160px;
  background: #F8FAFD;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  margin-bottom: 18px;
  overflow: hidden;
}

.product-img-box img {
  max-height: 100%;
  object-fit: contain;
  transition: transform 0.4s ease;
}

.product-item:hover .product-img-box img {
  transform: scale(1.08);
}

.product-item h3 {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--primary-navy);
  margin-bottom: 6px;
}

.product-item p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 16px;
  flex-grow: 1;
}

.product-meta {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary-blue);
  background: var(--light-blue);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  text-align: center;
}

/* --------------------------------------------------------------------------
   App Benefits (3-column)
   -------------------------------------------------------------------------- */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.benefit-card {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  padding: 32px 28px;
  box-shadow: var(--shadow-subtle);
  transition: var(--transition-smooth);
}

.benefit-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
  border-color: var(--primary-blue);
}

.benefit-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--light-blue);
  color: var(--primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 20px;
}

.benefit-card h3 {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--primary-navy);
  margin-bottom: 10px;
}

.benefit-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   RFQ Action Card
   -------------------------------------------------------------------------- */
.rfq-action-card {
  background: linear-gradient(135deg, #073B78 0%, #05264F 100%);
  border-radius: var(--radius-xl);
  padding: 48px;
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  box-shadow: var(--shadow-card);
}

.rfq-action-content h3 {
  font-size: 1.85rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.rfq-action-content p {
  font-size: 1rem;
  color: #CBD5E1;
  max-width: 600px;
}

.rfq-action-btns {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   Download Section
   -------------------------------------------------------------------------- */
.download-section {
  background: #FFFFFF;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-subtle);
  padding: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  box-shadow: var(--shadow-subtle);
}

.download-info h3 {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--primary-navy);
  margin-bottom: 10px;
}

.download-info p {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 580px;
  margin-bottom: 24px;
}

.download-btn-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.download-qr-box {
  background: #F8FAFD;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px;
  text-align: center;
  flex-shrink: 0;
}

.download-qr-box img {
  width: 120px;
  height: 120px;
  margin-bottom: 8px;
}

.download-qr-box span {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   Page Header (About, Contact, Privacy)
   -------------------------------------------------------------------------- */
.page-header {
  background: linear-gradient(135deg, #073B78 0%, #05264F 100%);
  color: #FFFFFF;
  padding: 56px 0 60px;
  text-align: center;
}

.page-header h1 {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.8px;
  margin-bottom: 10px;
}

.page-header p {
  font-size: 1.05rem;
  color: #CBD5E1;
  max-width: 600px;
  margin: 0 auto;
}

/* --------------------------------------------------------------------------
   Clean Card Container for Text / Legal / Contact
   -------------------------------------------------------------------------- */
.content-box {
  background: #FFFFFF;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-subtle);
  padding: 44px 48px;
  margin-bottom: 60px;
}

.content-block {
  margin-bottom: 32px;
}

.content-block h2 {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--primary-navy);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
}

.content-block h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary-navy);
  margin: 16px 0 8px;
}

.content-block p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 12px;
}

.content-block ul {
  list-style: disc;
  padding-left: 22px;
  margin-bottom: 14px;
}

.content-block li {
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 6px;
}

.highlight-banner {
  background: var(--light-blue);
  border-left: 4px solid var(--primary-blue);
  padding: 14px 18px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 20px 0;
}

.highlight-banner p {
  color: var(--primary-navy);
  font-weight: 600;
  margin-bottom: 0;
}

/* Contact Cards */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.contact-tile {
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  box-shadow: var(--shadow-subtle);
  transition: var(--transition-smooth);
}

.contact-tile:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
  border-color: var(--primary-blue);
}

.contact-tile-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--light-blue);
  color: var(--primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  flex-shrink: 0;
}

.contact-tile-info h4 {
  font-size: 1rem;
  font-weight: 800;
  color: var(--primary-navy);
  margin-bottom: 4px;
}

.contact-tile-info p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
  margin-bottom: 6px;
}

.contact-tile-info a {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--primary-blue);
}

/* Simple Contact Form */
.form-wrap {
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-subtle);
}

.form-group {
  margin-bottom: 18px;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary-navy);
  margin-bottom: 6px;
}

.form-input {
  width: 100%;
  padding: 12px 14px;
  font-size: 0.95rem;
  font-family: inherit;
  background: #F8FAFD;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  transition: var(--transition-fast);
}

.form-input:focus {
  outline: none;
  background: #FFFFFF;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(8, 119, 209, 0.12);
}

.form-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* --------------------------------------------------------------------------
   Clean Minimal Footer (Single Logo, No Duplicate Title)
   -------------------------------------------------------------------------- */
.footer {
  background: #041B38;
  color: #94A3B8;
  padding: 56px 0 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 28px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-logo-card {
  background: #FFFFFF;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  width: fit-content;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.footer-logo-card img {
  height: 38px;
  width: auto;
  object-fit: contain;
}

.footer-tagline {
  font-size: 0.85rem;
  color: #CBD5E1;
}

.footer-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-nav a {
  color: #CBD5E1;
  font-size: 0.9rem;
  font-weight: 600;
  transition: var(--transition-fast);
}

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

.footer-bottom-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
}

.footer-legal-links {
  display: flex;
  gap: 20px;
}

.footer-legal-links a {
  color: #94A3B8;
}

.footer-legal-links a:hover {
  color: #FFFFFF;
}

/* Floating WhatsApp Quick Chat */
.float-wa {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 54px;
  height: 54px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4);
  z-index: 999;
  font-size: 1.75rem;
  transition: var(--transition-smooth);
}

.float-wa:hover {
  transform: scale(1.1) translateY(-2px);
  background: #20BD5A;
  color: #FFFFFF;
}

/* --------------------------------------------------------------------------
   Smooth Animations & Reveal Engine
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

/* --------------------------------------------------------------------------
   Responsive Design
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .trust-strip-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .contact-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .mobile-toggle {
    display: block;
  }
  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    background: #FFFFFF;
    flex-direction: column;
    padding: 24px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid var(--border-subtle);
    clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
    transition: clip-path 0.3s ease-in-out;
  }
  .nav-menu.active {
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  }
  .nav-actions {
    display: none;
  }
  .hero {
    padding: 60px 0 70px;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }
  .hero-title {
    font-size: 2.35rem;
  }
  .hero-desc {
    margin: 0 auto 28px;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-trust-bar {
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px;
  }
  .trust-strip-grid {
    grid-template-columns: 1fr;
  }
  .product-grid {
    grid-template-columns: 1fr;
  }
  .benefits-grid {
    grid-template-columns: 1fr;
  }
  .rfq-action-card {
    flex-direction: column;
    text-align: center;
    padding: 32px 24px;
  }
  .rfq-action-btns {
    justify-content: center;
  }
  .download-section {
    flex-direction: column;
    text-align: center;
    padding: 32px 24px;
  }
  .download-qr-box {
    margin: 0 auto;
  }
  .download-btn-row {
    justify-content: center;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .form-2col {
    grid-template-columns: 1fr;
  }
  .content-box {
    padding: 28px 20px;
  }
  .footer-top {
    flex-direction: column;
    align-items: flex-start;
  }
}