/* ==========================================================================
   Lingdong Silicone - European & American B2B Industrial Design System
   Font: Plus Jakarta Sans / Inter
   Color Palette: Precision Slate (#0f172a), High-Tech Cyan (#0284c7), Crisp White (#ffffff)
   ========================================================================== */

:root {
  --primary: #0284c7;
  --primary-hover: #0369a1;
  --primary-light: #e0f2fe;
  --primary-glow: rgba(2, 132, 199, 0.18);
  
  --accent: #0ea5e9;
  --accent-green: #10b981;
  --accent-amber: #f59e0b;
  
  --slate-950: #020617;
  --slate-900: #0f172a;
  --slate-850: #172033;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50: #f8fafc;
  --white: #ffffff;

  --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);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  --shadow-glow: 0 0 25px rgba(2, 132, 199, 0.35);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --transition-fast: 0.15s ease;
  --transition-base: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  color: var(--slate-800);
  background-color: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Typography Hierarchy */
h1, h2, h3, h4, h5, h6 {
  color: var(--slate-900);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.025em;
}

p {
  color: var(--slate-600);
}

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

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

button, input, select, textarea {
  font-family: inherit;
}

.container {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-base);
}

.header-topbar {
  background: var(--slate-950);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding: 6px 0;
  font-size: 12px;
  color: var(--slate-400);
}

.header-topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.topbar-left {
  display: flex;
  gap: 20px;
  align-items: center;
}

.badge-tag {
  background: rgba(2, 132, 199, 0.15);
  color: var(--accent);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.5px;
}

.topbar-right {
  display: flex;
  gap: 16px;
  align-items: center;
}

.header-main .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 76px;
}

.logo-wrap {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-symbol {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary) 0%, #0369a1 100%);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.4);
}

.logo-symbol svg {
  width: 26px;
  height: 26px;
  fill: white;
}

.logo-text h2 {
  color: var(--white);
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.1;
}

.logo-text span {
  color: var(--slate-400);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  font-weight: 600;
  display: block;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 32px;
  align-items: center;
}

.nav-link {
  color: var(--slate-200);
  font-size: 14px;
  font-weight: 600;
  position: relative;
  padding: 8px 0;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition-fast);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Global Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(2, 132, 199, 0.45);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--white);
}

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

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

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 15px;
  border-radius: var(--radius-lg);
}

/* Hero Section */
.hero-section {
  position: relative;
  background: linear-gradient(170deg, var(--slate-950) 0%, var(--slate-900) 50%, var(--slate-850) 100%);
  color: var(--white);
  padding: 90px 0 100px;
  overflow: hidden;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-bg-grid {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(to right, rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 700px;
  height: 500px;
  background: radial-gradient(circle, rgba(2, 132, 199, 0.2) 0%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 10;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 50px;
  align-items: center;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(2, 132, 199, 0.15);
  border: 1px solid rgba(56, 189, 248, 0.3);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  color: #38bdf8;
  margin-bottom: 24px;
}

.hero-pill-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-green);
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.hero-title {
  color: var(--white);
  font-size: 48px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero-title span {
  background: linear-gradient(135deg, #38bdf8 0%, #0284c7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  color: var(--slate-400);
  font-size: 18px;
  line-height: 1.6;
  margin-bottom: 36px;
  max-width: 620px;
}

.hero-cta-group {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-guarantee {
  display: flex;
  gap: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
}

.guarantee-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--slate-300);
  font-weight: 500;
}

.guarantee-item svg {
  width: 18px;
  height: 18px;
  fill: var(--accent-green);
}

.hero-visual {
  position: relative;
}

.hero-card-main {
  background: var(--slate-900);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
  position: relative;
}

.hero-card-img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.hero-card-main:hover .hero-card-img {
  transform: scale(1.03);
}

.hero-badge-overlay {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  color: #38bdf8;
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero-floating-stat {
  position: absolute;
  bottom: -24px;
  right: -20px;
  background: rgba(30, 41, 59, 0.95);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-lg);
  padding: 16px 22px;
  box-shadow: var(--shadow-2xl);
  display: flex;
  align-items: center;
  gap: 16px;
  animation: floatSubtle 4s ease-in-out infinite;
}

@keyframes floatSubtle {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.stat-icon {
  width: 44px;
  height: 44px;
  background: rgba(2, 132, 199, 0.2);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.stat-icon svg {
  width: 24px;
  height: 24px;
  fill: #38bdf8;
}

.stat-text .stat-val {
  font-size: 20px;
  font-weight: 800;
  color: var(--white);
  line-height: 1.1;
}

.stat-text .stat-sub {
  font-size: 12px;
  color: var(--slate-400);
}

/* Hard Stats Strip */
.stats-strip {
  background: var(--slate-950);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 30px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-metric {
  text-align: center;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  padding: 0 16px;
}

.stat-metric:last-child {
  border-right: none;
}

.metric-num {
  font-size: 34px;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

.metric-num span {
  color: var(--accent);
}

.metric-label {
  font-size: 13px;
  color: var(--slate-400);
  font-weight: 500;
}

/* Certifications Trust Strip */
.cert-section {
  padding: 50px 0;
  background: var(--slate-50);
  border-bottom: 1px solid var(--slate-200);
}

.cert-header {
  text-align: center;
  margin-bottom: 30px;
}

.cert-header h4 {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--slate-500);
  font-weight: 700;
}

.cert-badges-grid {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.cert-pill {
  background: var(--white);
  border: 1px solid var(--slate-200);
  padding: 12px 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: 12px;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.cert-pill:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.cert-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--primary-light);
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 12px;
}

.cert-info strong {
  display: block;
  font-size: 13px;
  color: var(--slate-900);
}

.cert-info span {
  font-size: 11px;
  color: var(--slate-500);
}

/* Section Shared Headers */
.section-intro {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 60px;
}

.section-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
}

.section-heading {
  font-size: 36px;
  font-weight: 800;
  color: var(--slate-900);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 16px;
  color: var(--slate-600);
  line-height: 1.6;
}

/* Manufacturing Capabilities */
.capabilities-section {
  padding: 100px 0;
  background: var(--white);
}

.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 60px;
}

.capability-card {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.capability-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: #cbd5e1;
}

.capability-img-wrap {
  position: relative;
  height: 220px;
  overflow: hidden;
}

.capability-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.capability-card:hover .capability-img {
  transform: scale(1.05);
}

.capability-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(6px);
  color: var(--white);
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.5px;
}

.capability-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.capability-body h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.capability-body p {
  font-size: 14px;
  color: var(--slate-600);
  margin-bottom: 20px;
  line-height: 1.6;
}

.capability-specs {
  list-style: none;
  margin-top: auto;
  border-top: 1px solid var(--slate-100);
  padding-top: 16px;
}

.capability-specs li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--slate-700);
  margin-bottom: 8px;
  font-weight: 500;
}

.capability-specs li svg {
  width: 16px;
  height: 16px;
  fill: var(--primary);
  flex-shrink: 0;
}

/* In-Depth Machinery Matrix */
.machinery-box {
  background: var(--slate-900);
  border-radius: var(--radius-xl);
  padding: 40px;
  color: var(--white);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.machinery-content h3 {
  color: var(--white);
  font-size: 26px;
  margin-bottom: 14px;
}

.machinery-content p {
  color: var(--slate-400);
  font-size: 15px;
  margin-bottom: 24px;
}

.machinery-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.machinery-item {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 12px 16px;
}

.machinery-item strong {
  display: block;
  font-size: 16px;
  color: #38bdf8;
  font-weight: 700;
}

.machinery-item span {
  font-size: 12px;
  color: var(--slate-400);
}

.machinery-img-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.machinery-img-wrap img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

/* OEM/ODM 8-Step Interactive Process */
.process-section {
  padding: 100px 0;
  background: var(--slate-50);
  border-top: 1px solid var(--slate-200);
  border-bottom: 1px solid var(--slate-200);
}

.process-timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
  margin-bottom: 50px;
}

.process-card {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

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

.process-num {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary-light);
  line-height: 1;
  margin-bottom: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.process-icon-mini {
  width: 32px;
  height: 32px;
  background: var(--primary-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.process-icon-mini svg {
  width: 18px;
  height: 18px;
  fill: var(--primary);
}

.process-card h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 8px;
}

.process-card p {
  font-size: 13px;
  color: var(--slate-600);
  line-height: 1.5;
}

.process-card .lead-time {
  margin-top: 14px;
  display: inline-block;
  background: var(--slate-100);
  color: var(--slate-700);
  font-size: 11px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
}

.process-cta-banner {
  background: linear-gradient(135deg, var(--slate-900) 0%, var(--slate-850) 100%);
  border-radius: var(--radius-xl);
  padding: 36px 40px;
  color: var(--white);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
  box-shadow: var(--shadow-xl);
}

.process-cta-text h3 {
  color: var(--white);
  font-size: 22px;
  margin-bottom: 6px;
}

.process-cta-text p {
  color: var(--slate-400);
  font-size: 14px;
}

/* Products Catalog Showroom */
.products-section {
  padding: 100px 0;
  background: var(--white);
}

.product-filters {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.filter-btn {
  background: var(--white);
  border: 1px solid var(--slate-200);
  color: var(--slate-700);
  padding: 10px 20px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.filter-btn.active {
  background: var(--slate-900);
  border-color: var(--slate-900);
  color: var(--white);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.2);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}

.product-card {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  cursor: pointer;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: #cbd5e1;
}

.product-card.flagship-card {
  border: 2px solid #bae6fd;
}

.product-img-box {
  width: 100%;
  height: 280px;
  background: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--slate-100);
}

.product-img-box img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transition: transform var(--transition-base);
}

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

.prod-model-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(15, 23, 42, 0.85);
  color: var(--white);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.5px;
}

.prod-badge-oem {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 10px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
}

.product-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-category-name {
  font-size: 11px;
  text-transform: uppercase;
  color: var(--primary);
  font-weight: 700;
  letter-spacing: 0.8px;
  margin-bottom: 4px;
}

.product-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 12px;
  line-height: 1.35;
}

.product-spec-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  background: var(--slate-50);
  padding: 10px 12px;
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  font-size: 12px;
}

.spec-cell strong {
  display: block;
  color: var(--slate-500);
  font-size: 10px;
  text-transform: uppercase;
}

.spec-cell span {
  color: var(--slate-800);
  font-weight: 600;
}

.product-footer {
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--slate-100);
  padding-top: 14px;
}

.moq-tag {
  font-size: 12px;
  color: var(--slate-500);
  font-weight: 500;
}

.moq-tag strong {
  color: var(--slate-900);
}

.btn-sample {
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-light);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

/* RFQ & Sample Request Form Section */
.rfq-section {
  padding: 100px 0;
  background: linear-gradient(180deg, var(--slate-900) 0%, var(--slate-950) 100%);
  color: var(--white);
  position: relative;
}

.rfq-grid {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 60px;
  align-items: start;
}

.rfq-left h2 {
  color: var(--white);
  font-size: 38px;
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.2;
}

.rfq-left p {
  color: var(--slate-400);
  font-size: 16px;
  line-height: 1.6;
  margin-bottom: 32px;
}

.rfq-checklist {
  list-style: none;
  margin-bottom: 36px;
}

.rfq-checklist li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--slate-300);
  margin-bottom: 14px;
  font-weight: 500;
}

.rfq-checklist li svg {
  width: 20px;
  height: 20px;
  fill: var(--accent-green);
  flex-shrink: 0;
}

.nda-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.nda-card svg {
  width: 28px;
  height: 28px;
  fill: #38bdf8;
  flex-shrink: 0;
}

.nda-card h4 {
  color: var(--white);
  font-size: 15px;
  margin-bottom: 4px;
}

.nda-card p {
  font-size: 12px;
  color: var(--slate-400);
  line-height: 1.5;
  margin-bottom: 0;
}

/* Form Styles */
.rfq-form-card {
  background: var(--slate-850);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-2xl);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--slate-200);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  background: var(--slate-900);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  font-size: 14px;
  color: var(--white);
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.25);
}

.form-control::placeholder {
  color: var(--slate-500);
}

/* Dropzone */
.dropzone-box {
  border: 2px dashed rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
  background: rgba(15, 23, 42, 0.5);
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-bottom: 20px;
}

.dropzone-box:hover, .dropzone-box.dragover {
  border-color: var(--accent);
  background: rgba(2, 132, 199, 0.08);
}

.dropzone-icon {
  width: 40px;
  height: 40px;
  margin: 0 auto 10px;
  fill: var(--accent);
}

.dropzone-text strong {
  display: block;
  font-size: 14px;
  color: var(--white);
  margin-bottom: 4px;
}

.dropzone-text span {
  font-size: 12px;
  color: var(--slate-400);
}

/* Footer */
.site-footer {
  background: var(--slate-950);
  color: var(--slate-400);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 70px 0 30px;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-col h4 {
  color: var(--white);
  font-size: 16px;
  margin-bottom: 20px;
  letter-spacing: -0.2px;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 12px;
}

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

.footer-contact-item {
  display: flex;
  gap: 12px;
  margin-bottom: 14px;
  line-height: 1.4;
}

.footer-contact-item svg {
  width: 18px;
  height: 18px;
  fill: var(--primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  flex-wrap: wrap;
  gap: 16px;
}

/* Modals & Drawers */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(8px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal-overlay.active {
  display: flex;
}

.modal-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  max-width: 760px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-2xl);
  position: relative;
  padding: 36px;
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--slate-100);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--slate-700);
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: var(--slate-200);
}

/* GDPR Cookie Banner */
.gdpr-banner {
  position: fixed;
  bottom: 24px;
  left: 24px;
  right: 24px;
  max-width: 540px;
  background: rgba(15, 23, 42, 0.96);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  box-shadow: var(--shadow-2xl);
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: transform var(--transition-base);
}

.gdpr-banner.hide {
  transform: translateY(150%);
}

.gdpr-text {
  font-size: 13px;
  color: var(--slate-300);
  line-height: 1.5;
}

.gdpr-btns {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
}

/* Floating WhatsApp / Live Chat Contact Button */
.floating-contact-btn {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #25d366;
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  z-index: 900;
  transition: all var(--transition-base);
  cursor: pointer;
}

.floating-contact-btn:hover {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 10px 25px rgba(37, 211, 102, 0.5);
}

.floating-contact-btn svg {
  width: 32px;
  height: 32px;
  fill: white;
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-cta-group {
    justify-content: center;
  }
  .hero-guarantee {
    justify-content: center;
  }
  .capabilities-grid {
    grid-template-columns: 1fr;
  }
  .machinery-box {
    grid-template-columns: 1fr;
  }
  .process-timeline {
    grid-template-columns: repeat(2, 1fr);
  }
  .rfq-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .stat-metric {
    border-right: none;
  }
}

@media (max-width: 768px) {
  .header-topbar {
    display: none;
  }
  .nav-menu {
    display: none;
  }
  .hero-title {
    font-size: 34px;
  }
  .process-timeline {
    grid-template-columns: 1fr;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Advanced Micro-Interactions, Magnetic Glow Cursor & Language Selector
   ========================================================================== */

/* Magnetic Ambient Glow Cursor */
.ambient-glow-cursor {
  position: fixed;
  top: 0;
  left: 0;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(2, 132, 199, 0.12) 0%, rgba(14, 165, 233, 0.04) 40%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  transition: width 0.3s ease, height 0.3s ease, background 0.3s ease;
  mix-blend-mode: multiply;
  opacity: 0.8;
}

body.dark-mode .ambient-glow-cursor {
  mix-blend-mode: screen;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.15) 0%, rgba(2, 132, 199, 0.05) 50%, transparent 70%);
}

.ambient-glow-cursor.hovering {
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, rgba(2, 132, 199, 0.22) 0%, rgba(56, 189, 248, 0.08) 50%, transparent 70%);
}

/* Fluid Spring Press for Interactive Elements */
button, .btn, .product-card, .cert-pill, .process-card, .filter-btn {
  transition: transform 0.28s cubic-bezier(0.34, 1.56, 0.64, 1), 
              box-shadow 0.28s cubic-bezier(0.16, 1, 0.3, 1), 
              border-color 0.2s ease, 
              background-color 0.2s ease;
}

button:active, .btn:active, .filter-btn:active {
  transform: scale(0.96) !important;
}

.product-card:active {
  transform: scale(0.98) !important;
}

/* Click Ripple Effect */
.ripple-wave {
  position: absolute;
  border-radius: 50%;
  background: rgba(2, 132, 199, 0.25);
  transform: scale(0);
  animation: rippleAnimation 0.6s linear;
  pointer-events: none;
}

@keyframes rippleAnimation {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* 3D Tilt Glare Effect for Product Cards */
.product-card {
  transform-style: preserve-3d;
  will-change: transform;
}

.product-card .product-img-box {
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.product-card:hover .product-img-box img {
  transform: scale(1.08) translateY(-4px);
}

/* Multi-Language Dropdown Selector */
.lang-selector-wrap {
  position: relative;
  display: inline-block;
}

.lang-dropdown-btn {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: #ffffff;
  padding: 6px 14px;
  border-radius: 9999px;
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.lang-dropdown-btn:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.3);
}

.lang-dropdown-btn svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
  transition: transform 0.2s ease;
}

.lang-dropdown-btn.open svg {
  transform: rotate(180deg);
}

.lang-dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: #0f172a;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
  padding: 8px 0;
  min-width: 180px;
  z-index: 1000;
  animation: dropdownFade 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.lang-dropdown-menu.show {
  display: block;
}

@keyframes dropdownFade {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.lang-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 16px;
  font-size: 13px;
  color: #cbd5e1;
  cursor: pointer;
  transition: all 0.15s ease;
}

.lang-option:hover {
  background: rgba(2, 132, 199, 0.2);
  color: #38bdf8;
  padding-left: 20px;
}

.lang-option.active {
  color: #38bdf8;
  font-weight: 700;
  background: rgba(2, 132, 199, 0.12);
}

.lang-flag {
  font-size: 15px;
}

/* RTL (Arabic) Support Styles */
[dir="rtl"] {
  text-align: right;
  direction: rtl;
}

[dir="rtl"] .topbar-left {
  flex-direction: row-reverse;
}

[dir="rtl"] .topbar-right {
  flex-direction: row-reverse;
}

[dir="rtl"] .logo-wrap {
  flex-direction: row-reverse;
}

[dir="rtl"] .nav-menu {
  flex-direction: row-reverse;
}

[dir="rtl"] .hero-guarantee {
  flex-direction: row-reverse;
}

[dir="rtl"] .guarantee-item {
  flex-direction: row-reverse;
}

[dir="rtl"] .rfq-checklist li {
  flex-direction: row-reverse;
  text-align: right;
}

[dir="rtl"] .footer-grid {
  direction: rtl;
}

[dir="rtl"] .footer-contact-item {
  flex-direction: row-reverse;
}

[dir="rtl"] .lang-dropdown-menu {
  right: auto;
  left: 0;
}

[dir="rtl"] .prod-model-tag {
  left: auto;
  right: 12px;
}

[dir="rtl"] .prod-badge-oem {
  right: auto;
  left: 12px;
}