/* ==========================================
   1. GLOBAL STYLES & VARIABLES
   ========================================== */
   @import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

   :root {
       --bg-color: #f4f7f5;
       --card-bg: #ffffff;
       --text-color: #4a514b;
       --title-color: #58695d;
       --accent-color: #8fa89b;
       --accent-hover: #769284;
       --project-bg: #fffaf7;
       --services-bg: #fdfbf7;
       --border-color: #dee5e1;
   }
   
   [data-theme="dark"] {
       --bg-color: #1e2522;
       --card-bg: #2a332f;
       --text-color: #cbd5ce;
       --title-color: #e2ede6;
       --accent-color: #8fa89b;
       --accent-hover: #a3bfae;
       --project-bg: #332d29;
       --services-bg: #2e2a26;
       --border-color: #3d4a43;
   }
   
   * { margin: 0; padding: 0; box-sizing: border-box; }
   
   body {
       font-family: 'Poppins', sans-serif;
       background-color: var(--bg-color);
       color: var(--text-color);
       line-height: 1.6;
       transition: background-color 0.3s, color 0.3s;
   }
   
   a { text-decoration: none; color: inherit; }
   
   /* ==========================================
      2. HEADER & NAVIGATION
      ========================================== */
   header {
       background-color: var(--card-bg);
       padding: 20px 10%;
       display: flex;
       justify-content: space-between;
       align-items: center;
       box-shadow: 0 4px 12px rgba(0,0,0,0.03);
       position: sticky;
       top: 0;
       z-index: 100;
   }
   
   header h1 { font-size: 22px; font-weight: 700; color: var(--title-color); }
   
   nav ul { display: flex; list-style: none; align-items: center; gap: 20px; }
   nav ul li a { font-weight: 500; color: var(--text-color); transition: all 0.3s ease; }
   nav ul li a:hover { color: var(--accent-color); }
   
   .theme-toggle-btn {
       background: none;
       border: 1px solid var(--border-color);
       padding: 6px 12px;
       border-radius: 20px;
       cursor: pointer;
       color: var(--text-color);
       font-size: 14px;
       transition: all 0.2s;
   }
   
   /* ==========================================
      3. MAIN LAYOUT
      ========================================== */
   main { max-width: 1100px; margin: 0 auto; padding: 40px 20px; }
   
   section {
       background: var(--card-bg);
       padding: 40px;
       margin-bottom: 35px;
       border-radius: 16px;
       border: 1px solid var(--border-color);
   }
   
   section h2 {
       font-size: 24px;
       color: var(--title-color);
       margin-bottom: 25px;
       border-bottom: 3px solid var(--accent-color);
       padding-bottom: 8px;
       display: inline-block;
   }
   
   /* ==========================================
      4. SKILLS (FLEXBOX)
      ========================================== */
   .skills-container { display: flex; flex-wrap: wrap; gap: 15px; }
   .skill-card {
       background-color: var(--bg-color);
       color: var(--title-color);
       padding: 12px 24px;
       border-radius: 30px;
       font-weight: 600;
       font-size: 15px;
       border: 1px solid var(--border-color);
       text-align: center;
   }
   
   /* ==========================================
      5. GRID LAYOUTS (PORTFOLIO, CERTS, SERVICES)
      ========================================== */
   .portfolio-grid, .certificates-grid, .services-grid {
       display: grid;
       grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
       gap: 25px;
   }
   
   .project-card, .cert-card, .service-card {
       background-color: var(--project-bg);
       border: 1px solid var(--border-color);
       padding: 25px;
       border-radius: 14px;
       display: flex;
       flex-direction: column;
       justify-content: space-between;
       transition: all 0.3s ease;
   }
   
   .service-card { background-color: var(--services-bg); }
   
   .project-card:hover, .cert-card:hover, .service-card:hover {
       transform: translateY(-5px);
       box-shadow: 0 8px 20px rgba(0,0,0,0.05);
   }
   
   .project-tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0; }
   .tag { font-size: 11px; background: var(--card-bg); padding: 3px 8px; border-radius: 4px; border: 1px solid var(--border-color); }
   
   .cert-card h3, .service-card h3 { color: var(--title-color); margin-bottom: 5px; }
   .cert-info, .service-price { font-size: 13px; color: #a3aba5; margin-bottom: 10px; }
   
   .view-btn, .action-link {
       background-color: var(--accent-color);
       color: white;
       border: none;
       padding: 8px 16px;
       font-size: 13px;
       font-weight: 600;
       border-radius: 6px;
       cursor: pointer;
       transition: background 0.2s;
       display: inline-block;
       text-align: center;
       margin-top: 15px;
   }
   .view-btn:hover, .action-link:hover { background-color: var(--accent-hover); }
   
   /* ==========================================
      6. FAQ BÖLÜMÜ (ACCORDION)
      ========================================== */

   
   /* ==========================================
      7. STICKY FLOATING SOCIAL BAR
      ========================================== */
   .sticky-social-bar {
       position: fixed;
       right: 20px;
       top: 50%;
       transform: translateY(-50%);
       display: flex;
       flex-direction: column;
       gap: 12px;
       z-index: 500;
   }
   .social-icon-btn {
       background-color: var(--card-bg);
       border: 1px solid var(--border-color);
       color: var(--title-color);
       width: 45px;
       height: 45px;
       border-radius: 50%;
       display: flex;
       justify-content: center;
       align-items: center;
       font-weight: 700;
       font-size: 14px;
       box-shadow: 0 4px 10px rgba(0,0,0,0.05);
       transition: all 0.3s ease;
   }
   .social-icon-btn:hover {
       background-color: var(--accent-color);
       color: white;
       transform: scale(1.1);
   }
   
   /* ==========================================
      8. BLOG SECTION
      ========================================== */
   #blogContainer article {
       background: var(--bg-color);
       padding: 25px;
       border-radius: 12px;
       margin-bottom: 20px;
       border-left: 4px solid var(--accent-color);
       border-top: 1px solid var(--border-color);
       border-right: 1px solid var(--border-color);
       border-bottom: 1px solid var(--border-color);
   }
   .blog-meta { font-size: 12px; color: #a3aba5; margin-bottom: 10px; }
   
   /* ==========================================
      9. MODAL (POP-UP) DESIGN
      ========================================== */
   .modal {
       display: none;
       position: fixed;
       top: 0; left: 0; width: 100%; height: 100%;
       background-color: rgba(0, 0, 0, 0.4);
       backdrop-filter: blur(4px);
       z-index: 1000;
       justify-content: center; align-items: center;
   }
   
   .modal-content {
       background-color: var(--card-bg);
       padding: 35px;
       border-radius: 16px;
       max-width: 600px;
       width: 90%;
       border: 1px solid var(--border-color);
       position: relative;
       animation: modalAnim 0.3s ease;
   }
   
   @keyframes modalAnim {
       from { transform: translateY(-20px); opacity: 0; }
       to { transform: translateY(0); opacity: 1; }
   }
   
   .close-modal {
       position: absolute;
       top: 15px; right: 20px;
       font-size: 24px;
       cursor: pointer;
       color: var(--text-color);
   }
   .close-modal:hover { color: #d99a91; }
   
   /* ==========================================
      10. FORMS & INPUTS
      ========================================== */
   form input, form textarea, form select {
       width: 100%; padding: 12px;
       border: 1px solid var(--border-color);
       border-radius: 8px; font-family: inherit; font-size: 14px;
       background-color: var(--bg-color); color: var(--text-color); margin-top: 6px;
   }
/* ==========================================
   📱 RESPONSIVE & MOBILE LEFT SIDEBAR SYSTEM
   ========================================== */
.menu-toggle-btn, .close-sidebar-btn { display: none; }

@media (max-width: 768px) {
    /* Header elemanlarını sola doğru hizala */
    header {
        justify-content: flex-start !important;
        gap: 15px; /* Üç çizgi ile isim arasındaki boşluk */
        padding: 15px 20px;
    }



    /* Kapatma Çarpı Butonunu Göster */
    .close-sidebar-btn {
        display: block;
        background: none;
        border: none;
        font-size: 32px;
        color: var(--title-color);
        position: absolute;
        top: 20px;
        left: 25px;
        cursor: pointer;
    }

    /* Navigasyon Barını Gizle ve Gizli Sol Sidebar'a Dönüştür */
    header nav {
        position: fixed;
        top: 0;
        left: -300px;
        width: 280px;
        height: 100vh;
        background-color: var(--card-bg);
        box-shadow: 5px 0 15px rgba(0,0,0,0.05);
        padding: 80px 40px;
        transition: left 0.4s ease;
        z-index: 999;
        border-right: 1px solid var(--border-color);
    }

    /* Menü Aktif Olduğunda Sidebar Ekranın İçine Soldan Kayarak Gelsin */
    header nav.sidebar-active {
        left: 0;
    }

    /* Menü Linklerini Alt Alta Sırala */
    nav ul {
        flex-direction: column;
        align-items: flex-start;
        gap: 25px;
    }

    nav ul li a {
        font-size: 18px;
        font-weight: 600;
    }

    /* Sabit Sosyal Barı Mobilde Alt Kısma Yatay Hizala */
    .sticky-social-bar {
        position: static;
        flex-direction: row;
        justify-content: center;
        transform: none;
        margin-top: 20px;
        gap: 20px;
    }
}

   footer { text-align: center; padding: 40px; color: #a3aba5; font-size: 13px; }
   .social-icon-btn i {
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}
/* The switch - the box around the slider */
.switch {
    font-size: 17px;
    position: relative;
    display: inline-block;
    width: 3.5em;
    height: 2em;
  }
  
  /* Hide default HTML checkbox */
  .switch input {
    opacity: 0;
    width: 0;
    height: 0;
  }
  
  /* The slider */
  .slider {
    --background: #28096b;
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--background);
    transition: .5s;
    border-radius: 30px;
  }
  
  .slider:before {
    position: absolute;
    content: "";
    height: 1.4em;
    width: 1.4em;
    border-radius: 50%;
    left: 10%;
    bottom: 15%;
    box-shadow: inset 8px -4px 0px 0px #fff000;
    background: var(--background);
    transition: .5s;
  }
  
  input:checked + .slider {
    background-color: #522ba7;
  }
  
  input:checked + .slider:before {
    transform: translateX(100%);
    box-shadow: inset 15px -4px 0px 15px #fff000;
  }
/* ==================== 🌗 UIVERSE KRATER TOGGLE ==================== */
.nav-toggle-item {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-left: 15px;
  }
  
  .toggleWrapper {
    overflow: hidden;
    display: inline-block;
    position: relative;
  }
  
  .toggleWrapper .input {
    position: absolute;
    left: -99em;
  }
  
  .toggle {
    cursor: pointer;
    display: inline-block;
    position: relative;
    width: 75px; /* Menüye sığması için hafif küçültüldü */
    height: 40px;
    background-color: #83d8ff;
    border-radius: 84px;
    transition: background-color 200ms cubic-bezier(0.445, 0.05, 0.55, 0.95);
  }
  
  .toggle__handler {
    display: inline-block;
    position: relative;
    z-index: 1;
    top: 3px;
    left: 3px;
    width: 34px;
    height: 34px;
    background-color: #ffcf96;
    border-radius: 50px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
    transition: all 400ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
    transform: rotate(-45deg);
  }
  
  .toggle__handler .crater {
    position: absolute;
    background-color: #e8cda5;
    opacity: 0;
    transition: opacity 200ms ease-in-out;
    border-radius: 100%;
  }
  
  .toggle__handler .crater--1 { top: 14px; left: 8px; width: 4px; height: 4px; }
  .toggle__handler .crater--2 { top: 22px; left: 18px; width: 5px; height: 5px; }
  .toggle__handler .crater--3 { top: 8px; left: 20px; width: 6px; height: 6px; }
  
  .star {
    position: absolute;
    background-color: #fff;
    transition: all 300ms cubic-bezier(0.445, 0.05, 0.55, 0.95);
    border-radius: 50%;
  }
  
  .star--1 { top: 8px; left: 30px; z-index: 0; width: 25px; height: 3px; }
  .star--2 { top: 15px; left: 24px; z-index: 1; width: 25px; height: 3px; }
  .star--3 { top: 22px; left: 35px; z-index: 0; width: 25px; height: 3px; }
  
  .star--4, .star--5, .star--6 {
    opacity: 0;
    transition: all 300ms 0 cubic-bezier(0.445, 0.05, 0.55, 0.95);
  }
  
  .star--4 { top: 12px; left: 9px; z-index: 0; width: 2px; height: 2px; transform: translate3d(3px, 0, 0); }
  .star--5 { top: 24px; left: 14px; z-index: 0; width: 3px; height: 3px; transform: translate3d(3px, 0, 0); }
  .star--6 { top: 28px; left: 22px; z-index: 0; width: 2px; height: 2px; transform: translate3d(3px, 0, 0); }
  
  .input:checked + .toggle { background-color: #749dd6; }
  
  .input:checked + .toggle .toggle__handler {
    background-color: #ffe5b5;
    transform: translate3d(35px, 0, 0) rotate(0);
  }
  
  .input:checked + .toggle .toggle__handler .crater { opacity: 1; }
  .input:checked + .toggle .star--1 { width: 2px; height: 2px; }
  .input:checked + .toggle .star--2 { width: 4px; height: 4px; transform: translate3d(-5px, 0, 0); }
  .input:checked + .toggle .star--3 { width: 2px; height: 2px; transform: translate3d(-7px, 0, 0); }
  
  .input:checked + .toggle .star--4,
  .input:checked + .toggle .star--5,
  .input:checked + .toggle .star--6 {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
  
  .input:checked + .toggle .star--4 { transition: all 300ms 200ms cubic-bezier(0.445, 0.05, 0.55, 0.95); }
  .input:checked + .toggle .star--5 { transition: all 300ms 300ms cubic-bezier(0.445, 0.05, 0.55, 0.95); }
  .input:checked + .toggle .star--6 { transition: all 300ms 400ms cubic-bezier(0.445, 0.05, 0.55, 0.95); }
  /* ==================== ⏳ UIVERSE TAP HAND LOADING SCREEN ==================== */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: #0a0b0f; /* Sitenin arka plan rengiyle tam uyumlu */
    z-index: 99999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease;
  }
  
  .🤚 {
    --skin-color: #d7cd79; /* Portfolyonun imza mavi/mor rengine uyarlandı */
    --tap-speed: 0.6s;
    --tap-stagger: 0.1s;
    position: relative;
    width: 80px;
    height: 60px;
  }
  
  .🤚:before {
    content: '';
    display: block;
    width: 180%;
    height: 75%;
    position: absolute;
    top: 70%;
    right: 20%;
    background-color: black;
    border-radius: 40px 10px;
    filter: blur(10px);
    opacity: 0.3;
  }
  
  .🌴 {
    display: block;
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background-color: var(--skin-color);
    border-radius: 10px 40px;
  }
  
  .👍 {
    position: absolute;
    width: 120%;
    height: 38px;
    background-color: var(--skin-color);
    bottom: -18%;
    right: 1%;
    transform-origin: calc(100% - 20px) 20px;
    transform: rotate(-20deg);
    border-radius: 30px 20px 20px 10px;
    border-bottom: 2px solid rgba(0, 0, 0, 0.1);
    border-left: 2px solid rgba(0, 0, 0, 0.1);
  }
  
  .👍:after {
    width: 20%;
    height: 60%;
    content: '';
    background-color: rgba(255, 255, 255, 0.3);
    position: absolute;
    bottom: -8%;
    left: 5px;
    border-radius: 60% 10% 10% 30%;
    border-right: 2px solid rgba(0, 0, 0, 0.05);
  }
  
  .👉 {
    position: absolute;
    width: 80%;
    height: 35px;
    background-color: var(--skin-color);
    bottom: 32%;
    right: 64%;
    transform-origin: 100% 20px;
    animation-duration: calc(var(--tap-speed) * 2);
    animation-timing-function: ease-in-out;
    animation-iteration-count: infinite;
    transform: rotate(10deg);
  }
  
  .👉:before {
    content: '';
    position: absolute;
    width: 140%;
    height: 30px;
    background-color: var(--skin-color);
    bottom: 8%;
    right: 65%;
    transform-origin: calc(100% - 20px) 20px;
    transform: rotate(-60deg);
    border-radius: 20px;
  }
  
  .👉:nth-child(1) {
    animation-delay: 0;
    filter: brightness(70%);
    animation-name: tap-upper-1;
  }
  
  .👉:nth-child(2) {
    animation-delay: var(--tap-stagger);
    filter: brightness(80%);
    animation-name: tap-upper-2;
  }
  
  .👉:nth-child(3) {
    animation-delay: calc(var(--tap-stagger) * 2);
    filter: brightness(90%);
    animation-name: tap-upper-3;
  }
  
  .👉:nth-child(4) {
    animation-delay: calc(var(--tap-stagger) * 3);
    filter: brightness(100%);
    animation-name: tap-upper-4;
  }
  
  @keyframes tap-upper-1 {
    0%, 50%, 100% { transform: rotate(10deg) scale(0.4); }
    40% { transform: rotate(50deg) scale(0.4); }
  }
  
  @keyframes tap-upper-2 {
    0%, 50%, 100% { transform: rotate(10deg) scale(0.6); }
    40% { transform: rotate(50deg) scale(0.6); }
  }
  
  @keyframes tap-upper-3 {
    0%, 50%, 100% { transform: rotate(10deg) scale(0.8); }
    40% { transform: rotate(50deg) scale(0.8); }
  }
  
  @keyframes tap-upper-4 {
    0%, 50%, 100% { transform: rotate(10deg) scale(1); }
    40% { transform: rotate(50deg) scale(1); }
  }
  /* ==================== 📱 MOBİL İÇİN TOGGLE HİZALAMA DÜZELTMESİ ==================== */
@media (max-width: 768px) {
    #navMenu ul {
      display: flex !important;
      flex-direction: column !important;
      align-items: center !important;
      gap: 15px !important;
    }
  
    .nav-toggle-item.mobile-visible-toggle {
      display: flex !important;
      visibility: visible !important;
      opacity: 1 !important;
      padding: 10px 0 !important;
      width: 100% !important;
      justify-content: center !important;
    }
  
    .toggleWrapper {
      position: relative !important;
      left: 0 !important;
      top: 0 !important;
      transform: none !important;
    }
  }
  /* ==================== 📱 MOBİL HEADER VE MENÜ BUTONU DÜZELTMESİ ==================== */
@media (max-width: 768px) {
    header {
      display: flex !important;
      align-items: center !important;
      justify-content: space-between !important;
      padding: 10px 20px !important;
      position: relative !important;
      min-height: 60px !important;
      background-color: transparent !important; /* Arka plan çakışmalarını önler */
    }
  
    /* ☰ Açma butonunun mobilde kaybolmasını engeller */
    .menu-toggle-btn {
      display: block !important;
      position: static !important; /* Yukarı kaçmasını önler, header içine sabitler */
      font-size: 24px !important;
      color: var(--text-color, #333) !important; /* Temana göre butonun görünür olmasını sağlar */
      background: none !important;
      border: none !important;
      cursor: pointer !important;
      z-index: 1000 !important;
    }
  
    /* Başlığın yerini dengeler */
    header h1 {
      font-size: 20px !important;
      margin: 0 !important;
      text-align: center !important;
      flex-grow: 1 !important;
    }
  
    /* Uiverse toggle elementinin mobil dikey menüde taşmasını engeller */
    .nav-toggle-item {
      margin-top: 20px !important;
      list-style: none !important;
    }
  }
  /* ==================== 📱 HAMBURGER MENÜ BUTONU ZORLA GÖSTERME ==================== */
@media (max-width: 768px) {
    header {
      display: flex !important;
      align-items: center !important;
      justify-content: space-between !important;
      min-height: 60px !important;
      padding: 10px 20px !important;
      position: relative !important;
    }
  
    .menu-toggle-btn {
      display: block !important;          /* Mobilde zorla görünür yap */
      visibility: visible !important;    /* Gizliliği kaldır */
      opacity: 1 !important;             /* Şeffaflığı sıfırla */
      font-size: 28px !important;        /* Butonu belirginleştir */
      color: #5b6bff !important;         /* Senin o tatlı imza mavi/mor renginle parlasın */
      background: none !important;
      border: none !important;
      cursor: pointer !important;
      position: absolute !important;     /* Sol köşeye sabitleyelim */
      left: 20px !important;
      top: 50% !important;
      transform: translateY(-50%) !important;
      z-index: 9999 !important;          /* En üst katmana al */
    }
  
    header h1 {
      margin-left: 50px !important;      /* Başlık butonun üstüne binmesin diye kaydır */
      font-size: 20px !important;
    }
  }