:root {
  --primary-color: #374151; /* əvvəllər #2563eb, indi tünd boz */
  --secondary-color: #6b7280; /* orta boz */
  --accent-color: #4b5563; /* bir az açıq tünd boz */
  --text-dark: #111827; /* tünd qara boz */
  --text-light: #9ca3af; /* açıq boz */
  --white: #f9fafb; /* azca boz qarışığı ağ */
  --light-gray: #f3f4f6; /* açıq boz */
  --medium-gray: #d1d5db; /* orta boz */
  --dark-gray: #1f2937; /* tünd boz qara */
  --shadow: 0 4px 6px -1px rgba(31, 41, 55, 0.1); /* uyğun kölgə */
  --shadow-lg: 0 10px 15px -3px rgba(31, 41, 55, 0.1);
  --border-radius: 8px;
  --transition: all 0.3s ease;
  
}


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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--white);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--medium-gray);
  z-index: 1000;
  transition: var(--transition);
}

.navbar {
  padding: 1rem 0;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(white);
  text-decoration: none;
}

.logo i {
  font-size: 1.8rem;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-link {
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary-color);
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
}

.bar {
  width: 25px;
  height: 3px;
  background: var(--text-dark);
  transition: var(--transition);
}

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

.video-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
}

.video-container video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: -1;
}

.hero-content {
  text-align: center;
  color: var(--white);
  z-index: 1;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  animation: fadeInUp 1s ease;
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.9;
  animation: fadeInUp 1s ease 0.2s both;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 1s ease 0.4s both;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 12px 24px;
  border: none;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  font-size: 1rem;
}

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

.btn-primary:hover {
  background: #1d4ed8;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

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

/* Section Headers */
.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.125rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* About Section */
.about {
  padding: 5rem 0;
  background: var(--light-gray);
}

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

.about-item {
  text-align: center;
  padding: 2rem;
  background: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.about-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.about-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 2rem;
}

.about-item h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.about-item p {
  color: var(--text-light);
  line-height: 1.7;
}

/* Quality Section */
.quality {
  padding: 5rem 0;
  background: var(--white);
}

.quality-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.quality-content h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 2rem;
  color: var(--text-dark);
}

.quality-features {
  display: grid;
  gap: 1rem;
  text-align: left;
}

.quality-feature {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--light-gray);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.quality-feature:hover {
  background: var(--medium-gray);
}

.quality-feature i {
  color: var(--primary-color);
  font-size: 1.25rem;
}

.quality-feature span {
  font-weight: 500;
  color: var(--text-dark);
}

/* Catalog Preview */
.catalog-preview {
  padding: 5rem 0;
  background: var(--light-gray);
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.catalog-item {
  position: relative;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.catalog-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.catalog-image {
  position: relative;
  height: 250px;
  overflow: hidden;
}

.catalog-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.catalog-item:hover .catalog-image img {
  transform: scale(1.1);
}

.catalog-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  color: var(--white);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  transition: var(--transition);
}

.catalog-item:hover .catalog-overlay {
  opacity: 1;
}

.catalog-overlay h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.catalog-overlay p {
  margin-bottom: 1rem;
  opacity: 0.9;
}

.catalog-link {
  background: var(--primary-color);
  color: var(--white);
  padding: 8px 16px;
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
}

.catalog-link:hover {
  background: #1d4ed8;
}

.catalog-center {
  text-align: center;
}

/* Contact Section */
.contact {
  padding: 5rem 0;
  background: var(--white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.contact-info {
  display: grid;
  gap: 1.5rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--light-gray);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.contact-item:hover {
  background: var(--medium-gray);
}

.contact-item i {
  font-size: 1.5rem;
  color: var(--primary-color);
  margin-top: 0.25rem;
}

.contact-item h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
}

.contact-item p {
  color: var(--text-light);
}

.contact-item a {
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition);
}

.contact-item a:hover {
  color: #1d4ed8;
}

.contact-buttons {
  display: grid;
  gap: 1rem;
}

.contact-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 1rem;
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  position: relative;
}

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

.contact-btn.whatsapp:hover {
  background: #1d4ed8;
  transform: translateY(-2px);
}

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

.contact-btn.email:hover {
  background: #1d4ed8;
  transform: translateY(-2px);
}

/* Footer */
.footer {
  background: var(--dark-gray);
  color: var(--white);
  padding: 3rem 0 1rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.footer-section p {
  margin-bottom: 0.5rem;
  opacity: 0.8;
}

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

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--primary-color);
  color: var(--white);
  border-radius: 50%;
  text-decoration: none;
  transition: var(--transition);
}

.social-links a:hover {
  background: #1d4ed8;
  transform: translateY(-2px);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid #475569;
}

.footer-bottom p {
  opacity: 0.6;
}

/* Catalog Page Styles */
.catalog-hero {
  padding: 8rem 0 4rem;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  color: var(--white);
  text-align: center;
}

.catalog-hero h1 {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.catalog-hero p {
  font-size: 1.25rem;
  opacity: 0.9;
}

.catalog-nav {
  padding: 2rem 0;
  background: var(--white);
  border-bottom: 1px solid var(--medium-gray);
  position: sticky;
  top: 80px;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.catalog-tabs {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
  max-width: 1000px;
  margin: 0 auto;
}

.tab-btn {
  padding: 12px 20px;
  border: 2px solid var(--medium-gray);
  background: var(--white);
  color: var(--text-dark);
  border-radius: 25px;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
  white-space: nowrap;
  min-width: 140px;
  text-align: center;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.tab-btn:hover {
  background: var(--light-gray);
  border-color: var(--primary-color);
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.tab-btn.active {
  background: var(--primary-color);
  color: var(--white);
  border-color: var(--primary-color);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
  transform: translateY(-1px);
}

.catalog-section {
  padding: 4rem 0;
  display: none;
}

.catalog-section.active {
  display: block;
}

.catalog-section:nth-child(even) {
  background: var(--light-gray);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.product-item {
  background: var(--white);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.product-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.product-item img {
    width: auto;
    max-width: 100%;
    height: auto;
    max-height: 400px; /* istəyə uyğun artırıla bilər */
    object-fit: contain; /* şəkil tam göstərilsin */
    display: block;
    margin: 0 auto;
}


.product-item h3 {
  padding: 1rem;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-dark);
}

.pdf-download {
  text-align: center;
}

.contact-catalog {
  padding: 4rem 0;
  background: var(--primary-color);
  color: var(--white);
}

.contact-banner {
  text-align: center;
}

.contact-banner h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.contact-banner p {
  font-size: 1.125rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

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

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 80px;
    flex-direction: column;
    background-color: var(--white);
    width: 100%;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow);
    padding: 2rem 0;
  }

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

  .hamburger {
    display: flex;
  }

  .hamburger.active .bar:nth-child(2) {
    opacity: 0;
  }

  .hamburger.active .bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .hamburger.active .bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .hero-title {
    font-size: 2.5rem;
  }

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

  .section-header h2 {
    font-size: 2rem;
  }

  .catalog-hero h1 {
    font-size: 2rem;
  }

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

  .catalog-tabs {
    justify-content: flex-start;
    overflow-x: auto;
    padding: 0 20px 1rem;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }
.catalog-nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: #fff;
    transition: transform 0.3s ease-in-out;
}

.catalog-nav.hidden {
    transform: translateY(-100%);
}

  .catalog-tabs::-webkit-scrollbar {
    display: none;
  }

  .tab-btn {
    flex-shrink: 0;
    min-width: 120px;
    font-size: 0.9rem;
    padding: 10px 16px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .section-header h2 {
    font-size: 1.75rem;
  }

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

  .quality-features {
    gap: 0.75rem;
  }

  .quality-feature {
    padding: 0.75rem;
  }

  .catalog-tabs {
    gap: 0.5rem;
    padding: 0 15px 1rem;
  }

  .tab-btn {
    min-width: 110px;
    font-size: 0.85rem;
    padding: 8px 12px;
  }
}