html, body {
    margin: 0;
    padding: 0;
    height: 100vh;
    overflow-x: hidden;
    overflow-y: auto;
  }
  
  body {
    font-family: Arial, sans-serif;
    background-color: #ffffff;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
  }
  
  /* Açılış ekranı */
  .welcome-screen {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7); /* Yarı şeffaf bir arka plan */
    color: white;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 1; /* Başlangıçta görünür */
    transition: opacity 1s ease-in-out; /* Opaklık geçişi ekleniyor */
    z-index: 2000;
  }
  
  .welcome-img {
    max-width: 100%;
    max-height: 60%;
    margin-bottom: 20px;
  }
  
  h1 {
    font-size: 3em;
    margin: 10px 0;
  }
  
  p {
    font-size: 1.2em;
    margin-bottom: 20px;
  }
  
  #start-button {
    padding: 15px 30px;
    font-size: 1.5em;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
  }
  
  #start-button:hover {
    background-color: #45a049;
  }
  
  /* Ana sayfa içeriği */
  #main-content {
    text-align: center;
    padding: 20px;
    display: none; /* Başlangıçta görünmüyor */
    opacity: 0; /* Başlangıçta opaklık 0 */
    transition: opacity 1s ease-in-out; /* Ana sayfa içerigi için geçiş */
  }
  
  /* Ana içerik görünür olduğunda opaklık artacak */
  #main-content.show {
    opacity: 1;
    display: block;
  }
  
  /* Navbar Konteyneri */
  .navbar-container {
    position: relative;
    width: 100%;
  }
  
  /* Hamburger Menü */
  .hamburger-menu {
    position: fixed;
    top: 15px;
    left: 15px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 2000;
    padding: 10px;
  }
  
  .hamburger-menu span {
    display: block;
    width: 30px;
    height: 5px;
    background-color: #1a1a2e;
    margin: 5px 0;
    transition: all 0.6s ease;
    border-radius: 5px;
  }
  
  /* Hamburger Menü Açıkken Çarpı Şekline Dönüşmesi ve Beyaz Renk */
  .hamburger-menu.active span {
    background-color: #ffffff;
  }
  
  .hamburger-menu.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
  }
  
  .hamburger-menu.active span:nth-child(2) {
    opacity: 0;
  }
  
  .hamburger-menu.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
  }
  
  /* Navbar */
  .navbar {
    position: fixed;
    top: 0;
    left: -200px;
    width: 200px;
    height: 100%;
    background-color: #2c3e50;
    display: flex;
    flex-direction: column;
    padding-top: 80px;
    transition: left 0.6s ease;
    z-index: 1500;
    border-top-right-radius: 15px;
    border-bottom-right-radius: 15px;
  }
  
  .navbar.active {
    left: 0;
  }
  
  .navbar a {
    color: white;
    padding: 20px 30px;
    text-decoration: none;
    font-weight: bold;
    font-size: 18px;
    display: block;
  }
  
  .navbar a:hover {
    background-color: #f1c40f;
    color: #1a1a2e;
  }
  
  /* Harita Konteyneri */
  .map-container {
    width: 100%;
    min-height: 100vh;
    padding: 0;
    text-align: center;
    max-width: none;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin: 0 auto;
    position: relative;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    box-sizing: border-box;
  }
  
  /* Modal (Pop-up) */
  .region-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.3);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    overflow: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  .region-modal.show {
    display: flex !important;
  }
  
  .modal-content {
    background-color: #fff;
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    max-width: 600px;
    width: 90%;
    max-height: 70vh;
    overflow-y: auto;
    position: relative;
    text-align: center;
    backdrop-filter: blur(5px);
    border: 2px solid #e0e0e0;
    -webkit-overflow-scrolling: touch;
  }
  
  /* WebKit tarayıcılar için kaydırma çubuğu özelleştirme (Chrome, Safari, Edge) */
  .modal-content::-webkit-scrollbar {
    width: 8px;
  }
  
  .modal-content::-webkit-scrollbar-track {
    background: transparent;
    border-radius: 15px;
    margin: 15px 0;
  }
  
  .modal-content::-webkit-scrollbar-thumb {
    background: #2c3e50;
    border-radius: 15px;
    box-shadow: inset 0 0 2px rgba(0, 0, 0, 0.2);
  }
  
  .modal-content::-webkit-scrollbar-thumb:hover {
    background: #34495e;
  }
  
  /* Firefox için kaydırma çubuğu özelleştirme */
  .modal-content {
    scrollbar-width: thin;
    scrollbar-color: #2c3e50 transparent;
  }
  
  .close-modal {
    position: sticky;
    top: 10px;
    right: 10px;
    float: right;
    font-size: 30px;
    cursor: pointer;
    color: #333;
    z-index: 1002;
    background-color: #fff;  
    padding: 5px 10px;
    border-radius: 50%;
    line-height: 1;
    display: block !important;
    visibility: visible;
  }
  
  .close-modal:hover {
    color: #ff0000;
  }
  
  #modal-title {
    font-size: 24px;
    margin-bottom: 10px;
    color: #2c3e50;
  }
  
  #modal-description {
    font-size: 16px;
    color: #555;
    line-height: 1.6;
    text-align: left;
    margin-top: 10px;
    padding: 0 10px;
  }
  
  /* SVG Haritası */
  .turkiye-harita {
    width: 100%;
    max-width: 1350px;
    height: auto;
    display: block;
    margin: 0 auto;
    min-width: 0;
    transform: none;
    margin-bottom: 0;
  }
  
  svg {
    width: 100%;
    height: auto;
  }
  
  /* Diğer Stiller */
  .region {
    cursor: pointer;
    transition: fill 0.3s;
  }
  
  .region:hover {
    fill: rgb(125, 181, 231);
  }
  
  .region path {
    stroke: #666;
    stroke-width: 0.5;
    transition: fill 0.3s;
  }
  
  .tooltip {
    position: absolute;
    background-color: #2c3e50;
    color: #fff;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 16px;
    font-weight: bold;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 999;
    display: none;
  }
  
  .tooltip.show {
    display: block;
    opacity: 1;
  }
  
  /* Responsive Ayarlar */
  @media (min-width: 1600px) {
    .turkiye-harita {
      max-width: 2600px;
    }
  }
  
  @media (min-width: 1200px) {
    .turkiye-harita {
      transform: translateX(50px);
    }
  }
  
  @media (max-width: 1200px) {
    .turkiye-harita {
      max-width: 100%;
    }
  
    .navbar {
      width: 300px;
      left: -300px;
      border-top-right-radius: 12px;
      border-bottom-right-radius: 12px;
    }
  
    .navbar.active {
      left: 0;
    }
  
    .navbar a {
      font-size: 20px;
      padding: 15px 25px;
    }
  }
  
  @media (max-width: 768px) {
    .map-container {
      width: 100vw;
      min-height: 100vh;
      overflow-x: auto;
      overflow-y: auto;
      -webkit-overflow-scrolling: touch;
      display: flex;
      justify-content: center;
      align-items: center;
      padding: 0;
      box-sizing: border-box;
    }
  
    .map-container::-webkit-scrollbar {
      height: 8px;
    }
  
    .map-container::-webkit-scrollbar-track {
      background: transparent;
    }
  
    .map-container::-webkit-scrollbar-thumb {
      background: #2c3e50;
      border-radius: 4px;
    }
  
    .map-container::-webkit-scrollbar-thumb:hover {
      background: #34495e;
    }
  
    .turkiye-harita {
      width: 100%;
      max-width: none;
      height: auto;
      transform: scale(1);
      transform-origin: center;
      margin: 0 auto;
    }
  
    .navbar {
      width: 250px;
      left: -250px;
      border-top-right-radius: 10px;
      border-bottom-right-radius: 10px;
    }
  
    .navbar.active {
      left: 0;
    }
  
    .navbar a {
      font-size: 18px;
      padding: 12px 20px;
    }
  
    .hamburger-menu span {
      width: 30px;
      height: 4px;
      margin: 5px 0;
    }
  
    .modal-content {
      max-width: 90%;
      max-height: 60vh;
    }
  }
  
  /* iOS cihazlar için özel ayar (iPhone’lar genellikle 375px-430px genişlikte) */
  @media only screen and (max-width: 430px) {
    .map-container {
      min-height: 100vh;
      display: flex;
      justify-content: center;
      align-items: center;
    }
  
    .turkiye-harita {
      transform: scale(1.2);
      transform-origin: center;
      margin: 0 auto;
    }
  
    .modal-content {
      max-height: 60vh;
      overflow-y: auto;
      -webkit-overflow-scrolling: touch;
    }
  
    .close-modal {
      top: 50px;
      right: 50x;
      font-size: 24px;
      padding: 3px 8px;
      background-color: #fff;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
      display: block !important;
      visibility: visible;
    }
  }