/* ============================================
   SHREDDER INDUSTRIAL EQUIPMENT WEBSITE
   Global Stylesheet - International B2B Design
   ============================================ */

/* CSS Variables */
:root {
  --primary-dark: #1a1a2e;
  --primary-darker: #0f0f1a;
  --secondary: #f26522;
  --secondary-hover: #d9541a;
  --accent-green: #27ae60;
  --accent-green-light: #2ecc71;
  --text-dark: #2c3e50;
  --text-body: #4a4a4a;
  --text-light: #7f8c8d;
  --bg-white: #ffffff;
  --bg-light: #f8f9fa;
  --bg-gray: #eef2f5;
  --border-color: #e0e6ed;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 30px rgba(0,0,0,0.08);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --container-width: 1280px;
}

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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--text-body);
  line-height: 1.7;
  background: var(--bg-white);
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-dark);
  line-height: 1.3;
  font-weight: 700;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(1.8rem, 3vw, 2.5rem); }
h3 { font-size: clamp(1.3rem, 2vw, 1.6rem); }
h4 { font-size: 1.2rem; }

p {
  margin-bottom: 1rem;
}

.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title span {
  color: var(--secondary);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  display: block;
  margin-bottom: 0.5rem;
}

.section-title h2 {
  margin-bottom: 1rem;
}

.section-title p {
  max-width: 600px;
  margin: 0 auto;
  color: var(--text-light);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  gap: 8px;
}

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

.btn-primary:hover {
  background: var(--secondary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(242, 101, 34, 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--text-dark);
  border: 2px solid var(--border-color);
}

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

.btn-outline-light {
  background: transparent;
  color: white;
  border: 2px solid rgba(255,255,255,0.3);
}

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

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--secondary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-desktop a {
  font-weight: 500;
  color: var(--text-dark);
  position: relative;
}

.nav-desktop a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--secondary);
  transition: var(--transition);
}

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

.nav-desktop a:hover,
.nav-desktop a.active {
  color: var(--secondary);
}

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

.nav-dropdown-toggle {
  font-weight: 500;
  color: var(--text-dark);
  position: relative;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-dropdown-toggle::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--secondary);
  transition: var(--transition);
}

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

.nav-dropdown-toggle:hover,
.nav-dropdown.active .nav-dropdown-toggle {
  color: var(--secondary);
}

.nav-dropdown-toggle .arrow {
  font-size: 0.6rem;
  transition: transform 0.3s ease;
}

.nav-dropdown.open .nav-dropdown-toggle .arrow {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%);
  background: white;
  min-width: 240px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(-8px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 100;
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown.open .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown-menu a {
  display: block;
  padding: 10px 20px;
  color: var(--text-dark);
  font-weight: 400;
  font-size: 0.9rem;
  transition: all 0.2s ease;
}

.nav-dropdown-menu a::after {
  display: none;
}

.nav-dropdown-menu a:hover {
  background: var(--bg-light);
  color: var(--secondary);
  padding-left: 28px;
}

.nav-dropdown-menu a.active {
  color: var(--secondary);
  font-weight: 600;
  background: rgba(242, 101, 34, 0.05);
}

/* Contact nav link */
.nav-contact {
  font-weight: 500;
  color: var(--text-dark);
  position: relative;
}

.nav-contact::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--secondary);
  transition: var(--transition);
}

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

.nav-contact:hover,
.nav-contact.active {
  color: var(--secondary);
}

.nav-cta {
  margin-left: 1rem;
}

.nav-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}

.nav-mobile-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--text-dark);
  transition: var(--transition);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--primary-dark);
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('../images/hero-pattern.svg') center/cover;
  opacity: 0.03;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  color: white;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(242, 101, 34, 0.15);
  color: var(--secondary);
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(242, 101, 34, 0.2);
}

.hero-content h1 {
  color: white;
  margin-bottom: 1.5rem;
  line-height: 1.1;
}

.hero-content h1 span {
  color: var(--secondary);
}

.hero-content p {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: 2rem;
  max-width: 500px;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-image {
  position: relative;
}

.hero-image-placeholder {
  aspect-ratio: 4/3;
  background: rgba(255,255,255,0.05);
  border-radius: var(--radius-lg);
  border: 2px dashed rgba(255,255,255,0.15);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.4);
  gap: 1rem;
}

.hero-image-placeholder svg {
  width: 60px;
  height: 60px;
  opacity: 0.4;
}

.hero-stats {
  display: flex;
  gap: 2rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.hero-stat {
  text-align: left;
}

.hero-stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--secondary);
}

.hero-stat-label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
}

/* Section Spacing */
.section {
  padding: 100px 0;
}

.section.bg-light {
  background: var(--bg-light);
}

.section.bg-dark {
  background: var(--primary-dark);
  color: white;
}

.section.bg-dark .section-title h2,
.section.bg-dark h3 {
  color: white;
}

/* Products Grid */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.product-card {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.product-card-image {
  aspect-ratio: 4/3;
  background: var(--bg-gray);
  position: relative;
  overflow: hidden;
}

.product-card-image .img-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.product-card-image .img-placeholder svg {
  width: 40px;
  height: 40px;
  opacity: 0.4;
}

.product-card-tag {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: var(--secondary);
  color: white;
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.product-card-body {
  padding: 1.5rem;
}

.product-card-body h3 {
  margin-bottom: 0.5rem;
  font-size: 1.2rem;
}

.product-card-body p {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.product-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.product-card-link {
  color: var(--secondary);
  font-weight: 600;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 4px;
}

.product-card-link:hover {
  gap: 8px;
}

/* Features Section */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.feature-item {
  padding: 2rem;
  background: var(--bg-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.feature-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.feature-icon {
  width: 56px;
  height: 56px;
  background: rgba(242, 101, 34, 0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--secondary);
}

.feature-item h3 {
  margin-bottom: 0.75rem;
  font-size: 1.15rem;
}

.feature-item p {
  color: var(--text-light);
  font-size: 0.95rem;
  margin: 0;
}

/* Solutions Section */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.solution-card {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 1.5rem;
  padding: 1.5rem;
  background: var(--bg-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.solution-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.solution-icon {
  width: 120px;
  height: 120px;
  background: rgba(242, 101, 34, 0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--secondary);
}

.solution-content h3 {
  color: var(--text-dark);
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.solution-content p {
  color: var(--text-light);
  font-size: 0.9rem;
  margin: 0;
}

/* CTA Section */
.cta-box {
  background: var(--secondary);
  border-radius: var(--radius-lg);
  padding: 4rem;
  text-align: center;
  color: white;
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: rgba(255,255,255,0.05);
  border-radius: 50%;
}

.cta-box h2 {
  color: white;
  margin-bottom: 1rem;
  position: relative;
}

.cta-box p {
  max-width: 500px;
  margin: 0 auto 2rem;
  opacity: 0.9;
  position: relative;
}

.cta-box .btn {
  background: white;
  color: var(--secondary);
  position: relative;
}

.cta-box .btn:hover {
  background: var(--primary-dark);
  color: white;
}

/* Footer */
.footer {
  background: var(--primary-darker);
  color: rgba(255,255,255,0.7);
  padding: 80px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand .logo {
  color: white;
  margin-bottom: 1rem;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.footer-social {
  display: flex;
  gap: 1rem;
}

.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--secondary);
  transform: translateY(-3px);
}

.footer-links h4 {
  color: white;
  margin-bottom: 1.5rem;
  font-size: 1rem;
}

.footer-links a {
  display: block;
  padding: 0.4rem 0;
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--secondary);
  padding-left: 4px;
}

.footer-contact p {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 2rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
}

/* Breadcrumb */
.breadcrumb-section {
  background: var(--primary-dark);
  padding: 140px 0 60px;
  color: white;
  text-align: center;
}

.breadcrumb-section h1 {
  color: white;
  margin-bottom: 1rem;
}

.breadcrumb-nav {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
}

.breadcrumb-nav a:hover {
  color: var(--secondary);
}

.breadcrumb-nav .current {
  color: var(--secondary);
}

/* Product Detail Page */
.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.product-gallery {
  position: sticky;
  top: 100px;
}

.product-main-image {
  aspect-ratio: 4/3;
  background: var(--bg-gray);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  gap: 1rem;
  border: 2px dashed var(--border-color);
  margin-bottom: 1rem;
}

.product-main-image svg {
  width: 60px;
  height: 60px;
  opacity: 0.4;
}

.product-thumbnails {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.product-thumb {
  aspect-ratio: 1;
  background: var(--bg-gray);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  border: 2px dashed var(--border-color);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.75rem;
}

.product-thumb:hover {
  border-color: var(--secondary);
}

.product-info h1 {
  margin-bottom: 1rem;
}

.product-info .product-meta {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.product-info .product-meta span {
  background: var(--bg-light);
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--text-light);
}

.product-description {
  margin-bottom: 2rem;
  color: var(--text-body);
}

.specs-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 2rem;
}

.specs-table th,
.specs-table td {
  padding: 14px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.specs-table th {
  background: var(--bg-light);
  font-weight: 600;
  color: var(--text-dark);
  width: 40%;
}

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

.product-actions {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
}

/* Tabs */
.tabs-nav {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--border-color);
  margin-bottom: 2rem;
}

.tab-btn {
  padding: 14px 28px;
  background: none;
  border: none;
  font-weight: 600;
  color: var(--text-light);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: var(--transition);
  font-size: 0.95rem;
}

.tab-btn.active,
.tab-btn:hover {
  color: var(--secondary);
  border-bottom-color: var(--secondary);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Applications Grid */
.applications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}

.application-item {
  text-align: center;
  padding: 2rem 1rem;
  background: var(--bg-light);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.application-item:hover {
  background: var(--bg-white);
  box-shadow: var(--shadow-md);
}

.application-icon {
  width: 60px;
  height: 60px;
  background: rgba(242, 101, 34, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  color: var(--secondary);
}

.application-item h4 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.application-item p {
  font-size: 0.85rem;
  color: var(--text-light);
  margin: 0;
}

/* Contact Page */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
}

.contact-info-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
}

.contact-info-icon {
  width: 50px;
  height: 50px;
  background: rgba(242, 101, 34, 0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--secondary);
  flex-shrink: 0;
}

.contact-info-content h4 {
  margin-bottom: 0.25rem;
  font-size: 1.05rem;
}

.contact-info-content p {
  color: var(--text-light);
  margin: 0;
  font-size: 0.9rem;
}

.contact-form {
  background: var(--bg-white);
  padding: 2.5rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-dark);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition);
  background: var(--bg-white);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--secondary);
  box-shadow: 0 0 0 3px rgba(242, 101, 34, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

/* About Page */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-image {
  aspect-ratio: 4/3;
  background: var(--bg-gray);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  gap: 1rem;
  border: 2px dashed var(--border-color);
}

.about-image svg {
  width: 60px;
  height: 60px;
  opacity: 0.4;
}

.about-content h2 {
  margin-bottom: 1.5rem;
}

.about-content p {
  color: var(--text-body);
  margin-bottom: 1rem;
}

.about-stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}

.about-stat-item {
  text-align: center;
}

.about-stat-item .value {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--secondary);
}

.about-stat-item .label {
  font-size: 0.9rem;
  color: var(--text-light);
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-color);
}

.timeline-item {
  position: relative;
  padding-bottom: 2rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -2rem;
  top: 4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--secondary);
  border: 3px solid var(--bg-white);
  box-shadow: 0 0 0 2px var(--secondary);
}

.timeline-year {
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 0.25rem;
}

.timeline-content h4 {
  margin-bottom: 0.5rem;
}

.timeline-content p {
  color: var(--text-light);
  font-size: 0.9rem;
  margin: 0;
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 80px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-white);
  z-index: 999;
  padding: 2rem;
  flex-direction: column;
  gap: 1rem;
}

.mobile-menu.active {
  display: flex;
}

.mobile-menu a {
  font-size: 1.1rem;
  font-weight: 600;
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
}

/* Mobile Dropdown */
.mobile-dropdown-toggle {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.1rem;
  font-weight: 600;
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  cursor: pointer;
  color: var(--text-dark);
}

.mobile-dropdown-toggle .arrow {
  transition: transform 0.3s ease;
  font-size: 0.8rem;
}

.mobile-dropdown-toggle.active .arrow {
  transform: rotate(180deg);
}

.mobile-dropdown-menu {
  display: none;
  flex-direction: column;
  background: var(--bg-light);
}

.mobile-dropdown-menu.open {
  display: flex;
}

.mobile-dropdown-menu a {
  padding: 0.8rem 2rem;
  font-weight: 400;
  font-size: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.mobile-dropdown-menu a:hover {
  color: var(--secondary);
  background: rgba(242, 101, 34, 0.05);
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-grid,
  .product-detail-grid,
  .contact-grid,
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .product-gallery {
    position: static;
  }

  .solution-card {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .solution-icon {
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  .nav-desktop {
    display: none;
  }

  .nav-mobile-toggle {
    display: flex;
  }

  .hero {
    min-height: auto;
    padding: 120px 0 60px;
  }

  .hero-stats {
    flex-direction: column;
    gap: 1rem;
  }

  .section {
    padding: 60px 0;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .cta-box {
    padding: 2rem;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .about-stats-row {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .tabs-nav {
    flex-wrap: wrap;
  }

  .tab-btn {
    padding: 10px 16px;
    font-size: 0.85rem;
  }
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fadeInUp 0.6s ease forwards;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-light);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-light);
}

/* Selection */
::selection {
  background: rgba(242, 101, 34, 0.2);
  color: var(--text-dark);
}

/* ============================================
   PRODUCT PAGE NEW SECTIONS
   ============================================ */

/* Working Principle Animation */
.working-principle {
  background: var(--bg-white);
  padding: 4rem 0;
}

.principle-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.principle-step {
  text-align: center;
  padding: 2rem;
  background: var(--bg-light);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.principle-step:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.principle-icon {
  width: 120px;
  height: 120px;
  margin: 0 auto 1.5rem;
  background: var(--primary-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.principle-step h3 {
  margin-bottom: 0.75rem;
  color: var(--primary-dark);
}

.principle-step p {
  font-size: 0.9rem;
  color: var(--text-body);
  line-height: 1.6;
}

/* Model Comparison Table */
.model-comparison {
  background: var(--bg-light);
  padding: 4rem 0;
}

.comparison-table-wrapper {
  overflow-x: auto;
  margin-top: 3rem;
  box-shadow: var(--shadow-md);
  border-radius: var(--radius-md);
  background: var(--bg-white);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 800px;
}

.comparison-table thead {
  background: var(--primary-dark);
  color: white;
}

.comparison-table th {
  padding: 1.25rem 1rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.95rem;
}

.comparison-table th:first-child {
  border-radius: var(--radius-md) 0 0 0;
}

.comparison-table th:last-child {
  border-radius: 0 var(--radius-md) 0 0;
}

.comparison-table tbody tr {
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.comparison-table tbody tr:hover {
  background: rgba(242, 101, 34, 0.05);
}

.comparison-table td {
  padding: 1rem;
  color: var(--text-body);
}

.comparison-table td:first-child {
  font-weight: 600;
  color: var(--text-dark);
}

.comparison-table .highlight {
  background: rgba(39, 174, 96, 0.1);
  color: var(--accent-green);
  font-weight: 600;
}

/* Application Cases */
.application-cases {
  background: var(--bg-white);
  padding: 4rem 0;
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.case-card {
  background: var(--bg-light);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: var(--transition);
  border: 2px solid transparent;
}

.case-card:hover {
  border-color: var(--secondary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.case-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.case-flag {
  font-size: 2rem;
}

.case-country {
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 0.25rem;
}

.case-client {
  font-size: 0.85rem;
  color: var(--text-light);
}

.case-details {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.case-detail {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-color);
}

.case-detail:last-child {
  border-bottom: none;
}

.case-label {
  font-weight: 500;
  color: var(--text-light);
  font-size: 0.9rem;
}

.case-value {
  font-weight: 600;
  color: var(--text-dark);
  font-size: 0.9rem;
}

/* FAQ Accordion */
.faq-section {
  background: var(--bg-light);
  padding: 4rem 0;
}

.faq-list {
  max-width: 800px;
  margin: 3rem auto 0;
}

.faq-item {
  background: var(--bg-white);
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.faq-item:hover {
  box-shadow: var(--shadow-md);
}

.faq-question {
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  color: var(--text-dark);
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--secondary);
}

.faq-question .arrow {
  transition: transform 0.3s ease;
  font-size: 1.2rem;
}

.faq-item.active .faq-question .arrow {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer-content {
  padding: 0 1.5rem 1.25rem;
  color: var(--text-body);
  line-height: 1.7;
}

/* Download Center */
.download-center {
  background: var(--bg-white);
  padding: 4rem 0;
}

.download-buttons {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 3rem;
}

.download-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 2rem 3rem;
  background: var(--bg-light);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text-dark);
  transition: var(--transition);
  min-width: 200px;
  border: 2px solid transparent;
}

.download-btn:hover {
  border-color: var(--secondary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  color: var(--secondary);
}

.download-btn svg {
  width: 48px;
  height: 48px;
  color: var(--secondary);
}

.download-btn span {
  font-weight: 600;
  font-size: 1.1rem;
}

.download-btn small {
  color: var(--text-light);
  font-size: 0.85rem;
}

/* Dimension Schematic */
.dimension-schematic {
  background: var(--bg-light);
  padding: 4rem 0;
}

.schematic-diagrams {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 3rem;
  margin-top: 3rem;
}

.schematic-item {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.schematic-item h3 {
  text-align: center;
  margin-bottom: 1.5rem;
  color: var(--primary-dark);
}

.schematic-svg {
  width: 100%;
  height: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-gray);
}

.schematic-dimensions {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.dimension-item {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem;
  background: var(--bg-light);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
}

.dimension-label {
  font-weight: 600;
  color: var(--text-dark);
}

.dimension-value {
  color: var(--secondary);
  font-weight: 600;
}

/* Customer Reviews */
.customer-reviews {
  background: var(--bg-white);
  padding: 4rem 0;
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.review-card {
  background: var(--bg-light);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: var(--transition);
}

.review-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.review-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.review-customer {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.review-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--primary-dark);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.2rem;
}

.review-name {
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 0.25rem;
}

.review-company {
  font-size: 0.85rem;
  color: var(--text-light);
}

.review-flag {
  font-size: 2rem;
}

.review-stars {
  color: #f39c12;
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.review-text {
  color: var(--text-body);
  line-height: 1.7;
  font-style: italic;
}

/* Video Demo */
.video-demo {
  background: var(--bg-light);
  padding: 4rem 0;
}

.video-wrapper {
  max-width: 900px;
  margin: 3rem auto 0;
}

.video-placeholder {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
  background: var(--primary-dark);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.video-placeholder:hover .play-button {
  transform: scale(1.1);
}

.play-button {
  position: absolute;
  width: 80px;
  height: 80px;
  background: rgba(242, 101, 34, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease;
  z-index: 2;
}

.play-button svg {
  width: 36px;
  height: 36px;
  color: white;
  margin-left: 4px;
}

.video-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26, 26, 46, 0.7), rgba(242, 101, 34, 0.3));
  display: flex;
  align-items: center;
  justify-content: center;
}

.video-text {
  text-align: center;
  color: white;
  z-index: 1;
}

.video-text h3 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  color: white;
}

.video-text p {
  font-size: 1.1rem;
  opacity: 0.9;
}

/* Responsive */
@media (max-width: 768px) {
  .principle-steps {
    grid-template-columns: 1fr;
  }

  .cases-grid {
    grid-template-columns: 1fr;
  }

  .download-buttons {
    flex-direction: column;
    align-items: center;
  }

  .download-btn {
    width: 100%;
    max-width: 300px;
  }

  .schematic-diagrams {
    grid-template-columns: 1fr;
  }

  .reviews-grid {
    grid-template-columns: 1fr;
  }
}