/* Company Color Variables */
:root {
    --company-light: #FBFCFF;
    --company-secondary: #D0CCD0;
    --company-primary: #1C6E8C;
    --company-dark: #274156;
    
    /* Additional variables */
    --radius: 0.625rem;
    --font-size: 14px;
    --container-max-width: 1200px;
    --header-height: 80px;
  }
  
  /* Reset and Base Styles */
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  html {
    font-size: var(--font-size);
    scroll-behavior: smooth;
  }
  
  body {
    font-family: 'Montserrat', sans-serif;
    line-height: 1.6;
    color: var(--company-dark);
    background-color: var(--company-light);
    overflow-x: hidden;
  }
  
  /* Typography */
  h1 {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    font-family: 'Montserrat', sans-serif;
  }
  
  h2 {
    font-size: 2rem;
    font-weight: 600;
    line-height: 1.3;
    font-family: 'Montserrat', sans-serif;
  }
  
  h3 {
    font-size: 1.5rem;
    font-weight: 600;
    line-height: 1.4;
    font-family: 'Montserrat', sans-serif;
  }
  
  h4 {
    font-size: 1.25rem;
    font-weight: 500;
    line-height: 1.4;
    font-family: 'Montserrat', sans-serif;
  }
  
  p {
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.6;
    font-family: 'Montserrat', sans-serif;
  }
  
  /* Container */
  .container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 1rem;
  }
  
  /* Buttons */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Montserrat', sans-serif;
  }
  
  .btn-primary {
    background-color: var(--company-primary);
    color: var(--company-light);
  }
  
  .btn-primary:hover {
    background-color: #1a5f7a;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(28, 110, 140, 0.2);
  }
  
  .btn-secondary {
    background-color: var(--company-light);
    color: var(--company-primary);
    border: 2px solid var(--company-primary);
  }
  
  .btn-secondary:hover {
    background-color: var(--company-primary);
    color: var(--company-light);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(28, 110, 140, 0.2);
  }
  
  .btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
    border-radius: 2rem;
  }
  
  /* Header */
  .header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(251, 252, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(208, 204, 208, 0.2);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  }
  
  .header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
  }
  
  /* Logo */
  .logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    transition: opacity 0.3s ease;
  }
  
  .logo:hover {
    opacity: 0.8;
  }
  
  .logo-icon {
    width: 40px;
    height: 40px;
    background-color: transparent; /* Şeffaf arka plan */
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  .logo-icon span {
    color: var(--company-primary);
    font-weight: 700;
    font-size: 1.25rem;
  }
  
  .logo-text h1 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--company-dark);
    margin: 0;
  }
  
  .logo-text .slogan {
    font-size: 0.875rem;
    color: var(--company-primary);
    margin: 0;
  }
  
  /* Navigation */
  .nav-desktop {
    display: flex;
    align-items: center;
    gap: 2rem;
  }
  
  .nav-link {
    color: var(--company-dark);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
  }
  
  .nav-link:hover,
  .nav-link.active {
    color: var(--company-primary);
  }
  
  .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--company-primary);
  }
  
  /* Header Controls */
  .header-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
  }
  
  .lang-switcher {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    background-color: transparent;
    border: 1px solid var(--company-primary);
    border-radius: var(--radius);
    color: var(--company-primary);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.875rem;
    font-weight: 500;
  }
  
  .lang-switcher:hover {
    background-color: var(--company-primary);
    color: var(--company-light);
  }
  
  /* Mobile Menu */
  .mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    width: 30px;
    height: 30px;
    background: transparent;
    border: none;
    cursor: pointer;
  }
  
  .mobile-menu-btn span {
    display: block;
    height: 3px;
    width: 100%;
    background-color: var(--company-dark);
    margin: 3px 0;
    transition: 0.3s;
  }
  
  .mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
  }
  
  .mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
  }
  
  .mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
  }
  
  .nav-mobile {
    display: none;
    flex-direction: column;
    padding: 1rem 0;
    border-top: 1px solid rgba(208, 204, 208, 0.2);
  }
  
  .nav-mobile.active {
    display: flex;
  }
  
  .nav-link-mobile {
    display: block;
    padding: 0.75rem 0;
    color: var(--company-dark);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
  }
  
  .nav-link-mobile:hover,
  .nav-link-mobile.active {
    color: var(--company-primary);
  }
  
  /* Main Content */
  main {
    padding-top: var(--header-height);
  }
  
  /* Hero Section */
  .hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
  }
  
  .hero-slider {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
  }
  
  .hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
  }
  
  .hero-slide.active {
    opacity: 1;
  }
  
  .hero-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  
  .hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(39, 65, 86, 0.4);
  }
  
  .hero-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: var(--company-light);
    font-size: 1.5rem;
    padding: 1rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
    z-index: 10;
  }
  
  .hero-nav:hover {
    background: rgba(255, 255, 255, 0.3);
  }
  
  .hero-prev {
    left: 1rem;
  }
  
  .hero-next {
    right: 1rem;
  }
  
  .hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    color: var(--company-light);
    max-width: 800px;
    padding: 0 1rem;
  }
  
  .hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
  }
  
  .hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
  }
  
  .hero-indicators {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.5rem;
    z-index: 10;
  }
  
  .indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
  }
  
  .indicator.active {
    background: var(--company-light);
    transform: scale(1.25);
  }
  
  /* Sections */
  section {
    padding: 5rem 0;
  }
  
  .section-header {
    text-align: center;
    margin-bottom: 4rem;
  }
  
  .section-header h2 {
    margin-bottom: 1rem;
    color: var(--company-dark);
  }
  
  .section-header p {
    font-size: 1.125rem;
    color: rgba(39, 65, 86, 0.8);
    max-width: 600px;
    margin: 0 auto;
  }
  
  .section-cta {
    text-align: center;
    margin-top: 3rem;
  }
  
  /* Features Section */
  .features {
    background-color: var(--company-light);
  }
  
  .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
  }
  
  .feature-card {
    background: linear-gradient(135deg, rgba(28, 110, 140, 0.05), rgba(28, 110, 140, 0.1));
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }
  
  .feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px rgba(28, 110, 140, 0.1);
  }
  
  .feature-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
  }
  
  .feature-card h3 {
    margin-bottom: 1rem;
    color: var(--company-dark);
  }
  
  .feature-card p {
    color: rgba(39, 65, 86, 0.8);
  }
  
  /* About Preview Section */
  .about-preview {
    background: linear-gradient(to bottom, var(--company-light), rgba(208, 204, 208, 0.1));
  }
  
  .about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
  }
  
  .about-text h2 {
    margin-bottom: 1.5rem;
    color: var(--company-dark);
  }
  
  .about-text p {
    font-size: 1.125rem;
    color: rgba(39, 65, 86, 0.8);
    margin-bottom: 2rem;
    line-height: 1.7;
  }
  
  .about-image {
    position: relative;
  }
  
  .about-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 1rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  }
  
  /* Products Preview Section */
  .products-preview {
    background-color: var(--company-light);
  }
  
  .products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
  }
  
  .product-card {
    background: white;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }
  
  .product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  }
  
  .product-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
  }
  
  .product-info {
    padding: 1.5rem;
  }
  
  .product-info h3 {
    margin-bottom: 0.5rem;
    color: var(--company-dark);
  }
  
  .product-info p {
    color: rgba(39, 65, 86, 0.8);
    font-size: 0.875rem;
  }
  
  /* CTA Section */
  .cta {
    background: linear-gradient(135deg, var(--company-primary), var(--company-dark));
    color: var(--company-light);
    text-align: center;
  }
  
  .cta h2 {
    margin-bottom: 1.5rem;
    color: var(--company-light);
  }
  
  .cta p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
  }
  
  /* Footer */
  .footer {
    background: linear-gradient(to bottom, var(--company-dark), rgba(39, 65, 86, 0.9));
    color: var(--company-light);
    padding: 4rem 0 2rem;
  }
  
  .footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
  }
  
  .footer-section h3,
  .footer-section h4 {
    margin-bottom: 1.5rem;
    color: var(--company-light);
  }
  
  .footer-section p {
    color: rgba(251, 252, 255, 0.8);
    margin-bottom: 1rem;
    line-height: 1.6;
  }
  
  .footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
  }
  
  .footer-logo .logo-icon {
    width: 48px;
    height: 48px;
    background-color: transparent; /* Şeffaf arka plan */
  }
  
  .footer-logo .logo-icon span {
    font-size: 1.5rem;
    color: var(--company-primary);
  }
  
  .wrapper {
    display: inline-flex;
    list-style: none;
    height: 120px;
    width: 100%;
    padding-top: 40px;
    font-family: "Poppins", sans-serif;
    justify-content: center;
  }
  
  .wrapper .icon {
    position: relative;
    background: #fff;
    border-radius: 50%;
    margin: 10px;
    width: 50px;
    height: 50px;
    font-size: 18px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    box-shadow: 0 10px 10px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  }
  
  .wrapper .tooltip {
    position: absolute;
    top: 0;
    font-size: 14px;
    background: #fff;
    color: #fff;
    padding: 5px 8px;
    border-radius: 5px;
    box-shadow: 0 10px 10px rgba(0, 0, 0, 0.1);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  }
  
  .wrapper .tooltip::before {
    position: absolute;
    content: "";
    height: 8px;
    width: 8px;
    background: #fff;
    bottom: -3px;
    left: 50%;
    transform: translate(-50%) rotate(45deg);
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  }
  
  .wrapper .icon:hover .tooltip {
    top: -45px;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
  
  .wrapper .icon:hover span,
  .wrapper .icon:hover .tooltip {
    text-shadow: 0px -1px 0px rgba(0, 0, 0, 0.1);
  }
  
  .wrapper .facebook:hover,
  .wrapper .facebook:hover .tooltip,
  .wrapper .facebook:hover .tooltip::before {
    background: #1877f2;
    color: #fff;
  }
  
  .wrapper .twitter:hover,
  .wrapper .twitter:hover .tooltip,
  .wrapper .twitter:hover .tooltip::before {
    background: #1da1f2;
    color: #fff;
  }
  
  .wrapper .instagram:hover,
  .wrapper .instagram:hover .tooltip,
  .wrapper .instagram:hover .tooltip::before {
    background: #e4405f;
    color: #fff;
  }
  
  
  .footer-nav {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
  }
  
  .footer-nav a {
    color: rgba(251, 252, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
  }
  
  .footer-nav a:hover {
    color: var(--company-primary);
  }
  
  .contact-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }
  
  .contact-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
  }
  
  .contact-icon {
    font-size: 1.25rem;
    margin-top: 0.25rem;
  }
  
  .contact-item p {
    margin: 0;
    color: rgba(251, 252, 255, 0.8);
  }
  
  .footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(251, 252, 255, 0.1);
  }
  
  .footer-bottom p {
    color: rgba(251, 252, 255, 0.6);
    margin: 0;
  }
  
  .back-to-top {
    background: transparent;
    border: 1px solid rgba(251, 252, 255, 0.3);
    color: rgba(251, 252, 255, 0.8);
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.875rem;
  }
  
  .back-to-top:hover {
    background: var(--company-primary);
    color: var(--company-light);
    border-color: var(--company-primary);
  }
  
  /* Toast Notifications */
  .toast-container {
    position: fixed;
    top: 100px;
    right: 20px;
    z-index: 2000;
  }
  
  .toast {
    background: var(--company-light);
    color: var(--company-dark);
    border: 1px solid var(--company-primary);
    border-radius: var(--radius);
    padding: 1rem 1.5rem;
    margin-bottom: 0.5rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    animation: slideInRight 0.3s ease-out;
    max-width: 300px;
  }
  
  .toast.success {
    border-color: #10b981;
    background: #f0fdf4;
  }
  
  .toast.error {
    border-color: #ef4444;
    background: #fef2f2;
  }
  
  /* Responsive Design */
  @media (max-width: 768px) {
    .nav-desktop {
      display: none;
    }
    
    .mobile-menu-btn {
      display: flex;
    }
    
    .hero-title {
      font-size: 2rem;
    }
    
    .hero-subtitle {
      font-size: 1rem;
    }
    
    .hero-nav {
      padding: 0.5rem;
      font-size: 1.25rem;
    }
    
    .about-content {
      grid-template-columns: 1fr;
      gap: 2rem;
    }
    
    .footer-content {
      grid-template-columns: 1fr;
      gap: 2rem;
    }
    
    .footer-bottom {
      flex-direction: column;
      gap: 1rem;
      text-align: center;
    }
    
    .features-grid,
    .products-grid {
      grid-template-columns: 1fr;
    }
    
    section {
      padding: 3rem 0;
    }
  }
  
  @media (max-width: 480px) {
    .container {
      padding: 0 0.5rem;
    }
    
    .hero-title {
      font-size: 1.75rem;
    }
    
    .logo-text h1 {
      font-size: 1rem;
    }
    
    .logo-text .slogan {
      font-size: 0.75rem;
    }
    
    .hero-nav {
      display: none;
    }
  }