/* ===============================================
   GÜRSAN ALÜMINYUM - Modern Design System
   =============================================== */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700;800&family=Roboto:wght@300;400;500;700&family=Montserrat:wght@700;800;900&family=Oswald:wght@700&display=swap');

/* ===============================================
   CSS Variables & Design Tokens
   =============================================== */
:root {
  /* Colors - Logo Blue Theme */
  --primary-blue: #022172;
  --secondary-blue: #02297C;
  --accent-blue: #0339A3;
  --light-blue: #E8F0F8;
  --white: #FFFFFF;
  --text-dark: #1A1A1A;
  --text-gray: #6B7280;
  --border-gray: #E5E7EB;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
  --gradient-overlay: linear-gradient(135deg, rgba(0, 0, 0, 0.35) 0%, rgba(0, 0, 0, 0.25) 100%);

  /* Typography */
  --font-heading: 'Inter', sans-serif;
  --font-body: 'Roboto', sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(44, 70, 102, 0.08);
  --shadow-md: 0 4px 16px rgba(44, 70, 102, 0.12);
  --shadow-lg: 0 8px 32px rgba(44, 70, 102, 0.16);
  --shadow-xl: 0 16px 48px rgba(44, 70, 102, 0.24);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-smooth: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* ===============================================
   Reset & Base Styles
   =============================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 12.8px;
}

body {
  font-family: var(--font-body);
  color: var(--text-dark);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

/* ===============================================
   Typography
   =============================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-dark);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--text-gray);
}

/* ===============================================
   Navigation Header
   =============================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--primary-blue);
  box-shadow: var(--shadow-md);
  transition: var(--transition-smooth);
}

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

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: var(--transition-smooth);
}

.logo-container:hover {
  transform: scale(1.05);
}

.logo {
  height: 50px;
  transition: var(--transition-smooth);
}

.brand-name {
  font-family: 'Oswald', sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  gap: 2.5rem;
  align-items: center;
}

.nav-link {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  color: var(--white);
  position: relative;
  padding: 0.5rem 0;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--white);
  transition: var(--transition-smooth);
}

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

.nav-link:hover {
  color: var(--light-blue);
}

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

.lang-button {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-sm);
  color: var(--white);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  white-space: nowrap;
}

.fi {
  width: 1.2rem;
  height: 1.2rem;
  margin-right: 0.5rem;
  border-radius: 2px;
  display: inline-block;
  vertical-align: middle;
}

.lang-button:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.3);
}

.lang-dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  min-width: 150px;
  background: var(--white);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: var(--transition-smooth);
  z-index: 1000;
}

.lang-dropdown.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-option {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  color: var(--text-dark);
  font-family: var(--font-heading);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
  border-bottom: 1px solid var(--border-gray);
}

.lang-option:last-child {
  border-bottom: none;
}

.lang-option:hover {
  background: var(--light-blue);
  color: var(--primary-blue);
}

.lang-option.active {
  background: var(--primary-blue);
  color: var(--white);
}

.lang-option.active:hover {
  background: var(--secondary-blue);
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.mobile-toggle span {
  width: 25px;
  height: 3px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition-smooth);
  transform-origin: center;
}

/* Hamburger to X animation */
.mobile-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.mobile-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===============================================
   Hero Section
   =============================================== */
.hero {
  position: relative;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 70%;
  z-index: -2;
}

.hero-overlay {
  display: none;
}

.hero-content {
  text-align: center;
  color: var(--white);
  padding: 2rem;
  max-width: 900px;
  animation: fadeInUp 1s ease;
}

.hero-title {
  color: var(--white);
  margin-bottom: 1.5rem;
  text-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
  font-size: 1.5rem;
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: 2.5rem;
  font-weight: 300;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.25rem 3rem;
  background: var(--white);
  color: var(--primary-blue);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.125rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  transition: var(--transition-smooth);
  cursor: pointer;
  border: none;
}

.hero-cta:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.scroll-indicator {
  position: absolute;
  bottom: 3rem;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
  cursor: pointer;
}

.scroll-arrow {
  width: 30px;
  height: 30px;
  border-left: 3px solid var(--white);
  border-bottom: 3px solid var(--white);
  transform: rotate(-45deg);
}

/* ===============================================
   Section Containers
   =============================================== */
.section {
  padding: var(--spacing-xl) 2rem;
}

.section-dark {
  background: linear-gradient(180deg, #F9FAFB 0%, #FFFFFF 100%);
}

.container {
  max-width: 1400px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 1rem;
}

.section-title {
  margin-bottom: 1rem;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -0.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

.section-description {
  max-width: 700px;
  margin: 2rem auto 0;
  font-size: 1.25rem;
}

/* ===============================================
   Product Cards Grid
   =============================================== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: var(--spacing-lg);
}

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

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

.product-icon {
  width: 100%;
  height: 200px;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: var(--white);
  transition: var(--transition-smooth);
}

.product-card:hover .product-icon {
  transform: scale(1.1);
}

.product-content {
  padding: 2rem;
}

.product-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--primary-blue);
}

.product-description {
  color: var(--text-gray);
  line-height: 1.6;
}

/* ===============================================
   Stats Counter
   =============================================== */
.stats-section {
  background: var(--gradient-primary);
  color: var(--white);
  padding: var(--spacing-lg) 2rem;
}

.world-map-container {
  max-width: 1000px;
  margin: 0 auto 3rem;
  padding: 2rem;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  backdrop-filter: blur(10px);
}

.world-map {
  width: 100%;
  height: auto;
  display: block;
}

.world-map path {
  fill: #ffffff;
  stroke: var(--primary-blue);
  stroke-width: 0.5;
  transition: var(--transition-smooth);
  cursor: pointer;
}

.world-map path:hover {
  fill: var(--light-blue);
  stroke-width: 1;
}

.world-map path.active {
  fill: var(--accent-blue);
  stroke: var(--white);
  stroke-width: 1;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 3rem;
  max-width: 1200px;
  margin: 0 auto;
}

.stat-item {
  text-align: center;
  animation: fadeIn 1s ease;
}

.stat-number {
  font-size: 4rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  font-family: var(--font-heading);
}

.stat-label {
  font-size: 1.25rem;
  opacity: 0.95;
  font-weight: 300;
}

/* ===============================================
   Timeline (Hakkımızda Page)
   =============================================== */
.timeline {
  position: relative;
  max-width: 1000px;
  margin: var(--spacing-lg) auto;
  padding: 2rem 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 100%;
  background: var(--gradient-primary);
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  margin-bottom: 5rem;
  margin-top: 2.5rem;
  opacity: 0;
  transform: translateY(30px);
  transition: var(--transition-slow);
}

.timeline-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.timeline-item:nth-child(odd) .timeline-content {
  margin-left: 0;
  margin-right: auto;
  padding-right: 3rem;
}

.timeline-item:nth-child(even) .timeline-content {
  margin-left: auto;
  margin-right: 0;
  padding-left: 3rem;
}

.timeline-content {
  position: relative;
  width: calc(50% - 2rem);
  background: var(--white);
  padding: 2rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  border: 2px solid var(--light-blue);
}

.timeline-year {
  position: absolute;
  left: 50%;
  top: -1.5rem;
  transform: translateX(-50%);
  background: var(--gradient-primary);
  color: var(--white);
  padding: 0.8rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 800;
  font-size: 1.2rem;
  box-shadow: var(--shadow-md);
  z-index: 10;
  white-space: nowrap;
}

.timeline-title {
  color: var(--primary-blue);
  margin-bottom: 1rem;
}

.timeline-description {
  color: var(--text-gray);
  line-height: 1.8;
}

/* ===============================================
   Catalog Grid
   =============================================== */
.catalog-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-top: var(--spacing-lg);
}

.catalog-link {
  text-decoration: none;
  color: inherit;
  display: flex;
  height: 100%;
  width: 100%;
}

.catalog-card {
  background: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
  border: 1px solid var(--border-gray);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  height: 100%;
  width: 100%;
}

.catalog-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-blue);
}

.catalog-cover {
  width: 100%;
  height: 400px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
  overflow: hidden;
}

.catalog-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  transition: var(--transition-smooth);
}

.catalog-card:hover .catalog-overlay {
  opacity: 0;
}

.catalog-icon {
  font-size: 6rem;
  color: var(--white);
  transition: var(--transition-smooth);
}

.catalog-card:hover .catalog-icon {
  transform: scale(1.2);
}

.catalog-name {
  padding: 1.5rem;
  background: var(--white);
  text-align: center;
}

.catalog-name h3 {
  font-size: 1.25rem;
  color: var(--primary-blue);
  margin: 0;
  font-weight: 600;
  transition: var(--transition-smooth);
}

.catalog-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin: 0.5rem 0 0 0;
  font-weight: 400;
}

.catalog-card:hover .catalog-name h3 {
  color: var(--accent-blue);
}

.catalog-cover-img {
  width: 100%;
  height: 350px;
  object-fit: cover;
  object-position: center center;
  display: block;
  transition: var(--transition-smooth);
  flex-shrink: 0;
}

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

/* ===============================================
   Video Section
   =============================================== */
.video-container {
  position: relative;
  width: 100%;
  max-width: 1000px;
  margin: 0 auto var(--spacing-lg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.video-container video {
  width: 100%;
  display: block;
}

/* ===============================================
   Contact Section
   =============================================== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 3rem;
  margin-top: var(--spacing-lg);
}

.contact-card {
  background: var(--white);
  padding: 2.5rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  border: 2px solid var(--light-blue);
}

.contact-card h3 {
  color: var(--primary-blue);
  margin-bottom: 1.5rem;
  font-size: 1.75rem;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.contact-text {
  flex: 1;
}

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

.contact-value {
  color: var(--text-gray);
}

.contact-value a {
  color: var(--primary-blue);
  font-weight: 500;
}

.contact-value a:hover {
  text-decoration: underline;
}

.map-embed {
  width: 100%;
  height: 300px;
  border-radius: var(--radius-md);
  margin-top: 1.5rem;
  border: none;
  box-shadow: var(--shadow-sm);
}

/* ===============================================
   Contact Form
   =============================================== */
.contact-form {
  max-width: 700px;
  margin: var(--spacing-lg) auto 0;
  background: var(--white);
  padding: 3rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: 2rem;
  position: relative;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 1rem 1.25rem;
  border: 2px solid var(--border-gray);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: var(--transition-smooth);
  background: var(--white);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 4px rgba(44, 70, 102, 0.1);
}

.form-label {
  position: absolute;
  left: 1.25rem;
  top: 1rem;
  color: var(--text-gray);
  transition: var(--transition-fast);
  pointer-events: none;
  background: var(--white);
  padding: 0 0.5rem;
}

.form-input:focus+.form-label,
.form-input:not(:placeholder-shown)+.form-label,
.form-textarea:focus+.form-label,
.form-textarea:not(:placeholder-shown)+.form-label {
  top: -0.75rem;
  left: 0.75rem;
  font-size: 0.875rem;
  color: var(--primary-blue);
  font-weight: 600;
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-submit {
  width: 100%;
  padding: 1.25rem 2rem;
  background: var(--gradient-primary);
  color: var(--white);
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.125rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-md);
}

.form-submit:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

/* ===============================================
   Footer
   =============================================== */
.footer {
  background: var(--primary-blue);
  color: var(--white);
  padding: var(--spacing-lg) 2rem var(--spacing-md);
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: var(--spacing-md);
}

.footer-section h4 {
  color: var(--white);
  margin-bottom: 1.5rem;
  font-size: 1.25rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-link {
  color: rgba(255, 255, 255, 0.8);
  transition: var(--transition-fast);
}

.footer-link:hover {
  color: var(--white);
  padding-left: 0.5rem;
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 0.5rem;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  color: rgba(255, 255, 255, 0.8);
  transition: var(--transition-smooth);
}

.social-link:hover {
  background: var(--white);
  color: var(--primary-blue);
  transform: translateY(-3px);
}

.social-link svg {
  width: 20px;
  height: 20px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.7);
}

.footer-bottom p {
  margin: 0;
}

.footer-bottom .social-links {
  margin-top: 0;
}

.back-to-top {
  position: fixed;
  bottom: 8rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  color: var(--white);
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-lg);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

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

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes bounce {

  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateX(-50%) translateY(0);
  }

  40% {
    transform: translateX(-50%) translateY(-10px);
  }

  60% {
    transform: translateX(-50%) translateY(-5px);
  }
}

/* ===============================================
   Responsive Design
   =============================================== */
@media (max-width: 968px) {
  .nav-menu {
    position: fixed;
    top: 70px;
    right: -220px;
    width: 220px;
    background: var(--primary-blue);
    flex-direction: column;
    padding: 1rem 1.5rem;
    box-shadow: var(--shadow-xl);
    transition: var(--transition-smooth);
    gap: 0;
    align-items: stretch;
    border-radius: 0 0 0 var(--radius-md);
  }

  .nav-menu.active {
    right: 0;
  }

  .nav-menu li {
    width: 100%;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .nav-menu li:last-child {
    border-bottom: none;
  }

  .nav-menu .nav-link {
    display: block;
    padding: 1rem 0.5rem;
    font-size: 1.1rem;
    color: var(--white);
  }

  .nav-menu .nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--light-blue);
  }

  .nav-menu .nav-link::after {
    display: none;
  }

  .nav-menu .lang-selector {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
  }

  .nav-menu .lang-button {
    width: 100%;
    justify-content: center;
    padding: 0.75rem 1rem;
  }

  .nav-menu .lang-dropdown {
    position: relative;
    top: 0.5rem;
    right: auto;
    width: 100%;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
  }

  .nav-menu .lang-dropdown.show {
    transform: none;
  }

  .nav-menu .lang-option {
    color: var(--white);
    border-bottom-color: rgba(255, 255, 255, 0.1);
  }

  .nav-menu .lang-option:hover {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
  }

  .nav-menu .lang-option.active {
    background: rgba(255, 255, 255, 0.3);
  }

  .mobile-toggle {
    display: flex;
  }

  .timeline::before {
    left: 2rem;
  }

  .timeline-content {
    width: calc(100% - 4rem);
    margin-left: 4rem !important;
    padding: 1.5rem !important;
  }

  .timeline-year {
    left: 2rem;
    transform: translateX(-50%);
  }

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

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .catalog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  :root {
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
  }

  .section {
    padding: var(--spacing-lg) 1.5rem;
  }

  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1.125rem;
  }

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

  .stat-number {
    font-size: 3rem;
  }

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

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

  .back-to-top {
    bottom: 8rem;
  }

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

/* ===============================================
   Utility Classes
   =============================================== */
.text-center {
  text-align: center;
}

.mb-sm {
  margin-bottom: var(--spacing-sm);
}

.mb-md {
  margin-bottom: var(--spacing-md);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.mt-sm {
  margin-top: var(--spacing-sm);
}

.mt-md {
  margin-top: var(--spacing-md);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}