/* Reset ve Temel Stiller */
        * { box-sizing: border-box; }
        body {
            margin: 0;
            /* font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; */
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
        }

        /* =========================================
   GELİŞMİŞ RESPONSIVE IMAGE SİSTEMİ
   ========================================= */

/* 1. Temel Responsive Sınıf
   Resmin kapsayıcıdan taşmasını önler ve oranını korur.
   display: block; -> Resimlerin altındaki 3-4px'lik varsayılan boşluğu siler.
*/
.img-fluid {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 2. Absolute/Background Tarzı Resimler
   Bir div'in içini tamamen kaplaması gereken resimler için (Slider ve Kartlar için ideal).
   Parent elementte 'position: relative' ve belirli bir yükseklik olmalıdır.
*/
.img-cover {
    width: 100%;
    height: 100%;
    object-fit: cover; /* Resmi uzatmadan alanı doldurur, fazlalığı kırpar */
    object-position: center;
}

.img-contain {
    width: 100%;
    height: 100%;
    object-fit: contain; /* Resmin tamamını gösterir, boşluk kalabilir */
    object-position: center;
}

/* 3. Thumbnail (Küçük Resim) Stili
   Kenarlık ve boşluk ekleyerek çerçeve oluşturur.
*/
.img-thumbnail {
    padding: 0.25rem;
    background-color: #fff;
    border: 1px solid #dee2e6;
    border-radius: 0.25rem;
    max-width: 100%;
    height: auto;
    display: block;
}

/* 4. Modern Aspect Ratio (En-Boy Oranı) Sınıfları
   Resim yüklenmeden önce yer kaplar, böylece sayfa yüklenirken zıplama (CLS) olmaz.
   Kullanımı: <img class="img-fluid ratio-16x9" ...>
*/
.ratio-1x1 { aspect-ratio: 1 / 1; object-fit: cover; }
.ratio-4x3 { aspect-ratio: 4 / 3; object-fit: cover; }
.ratio-16x9 { aspect-ratio: 16 / 9; object-fit: cover; }
.ratio-21x9 { aspect-ratio: 21 / 9; object-fit: cover; }

/* 5. Şekil Yardımcıları */
.img-circle { border-radius: 50%; }
.img-rounded { border-radius: 0.25rem; }
        
        /* Container */
        .container { 
            width: 100%; 
            max-width: 1540px; 
            margin: 0 auto; 
            padding: 0 15px; 
        }
        
        .container-fluid {
            width: 100%;
            padding: 0 15px;
        }

          /* Grid Sistemi */
        .row { 
            display: flex; 
            flex-wrap: wrap; 
            margin: 0 -15px; 
        }
        
        [class*="col-"] { 
            padding: 0 15px; 
            margin-bottom: 20px;
        }
        
        .col-1 { flex: 0 0 8.333333%; max-width: 8.333333%; }
        .col-2 { flex: 0 0 16.666667%; max-width: 16.666667%; }
        .col-3 { flex: 0 0 25%; max-width: 25%; }
        .col-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
        .col-5 { flex: 0 0 41.666667%; max-width: 41.666667%; }
        .col-6 { flex: 0 0 50%; max-width: 50%; }
        .col-7 { flex: 0 0 58.333333%; max-width: 58.333333%; }
        .col-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
        .col-9 { flex: 0 0 75%; max-width: 75%; }
        .col-10 { flex: 0 0 83.333333%; max-width: 83.333333%; }
        .col-11 { flex: 0 0 91.666667%; max-width: 91.666667%; }
        .col-12 { flex: 0 0 100%; max-width: 100%; }
        
        /* Offset Sınıfları */
        .offset-1 { margin-left: 8.333333%; }
        .offset-2 { margin-left: 16.666667%; }
        .offset-3 { margin-left: 25%; }
        .offset-4 { margin-left: 33.333333%; }
        .offset-5 { margin-left: 41.666667%; }
        .offset-6 { margin-left: 50%; }
        .offset-7 { margin-left: 58.333333%; }
        .offset-8 { margin-left: 66.666667%; }
        .offset-9 { margin-left: 75%; }
        .offset-10 { margin-left: 83.333333%; }
        .offset-11 { margin-left: 91.666667%; }
        
        /* Flexbox Yardımcı Sınıfları */
        .d-flex { display: flex; }
        .d-inline-flex { display: inline-flex; }
        .flex-row { flex-direction: row; }
        .flex-column { flex-direction: column; }
        .flex-row-reverse { flex-direction: row-reverse; }
        .flex-column-reverse { flex-direction: column-reverse; }
        .flex-wrap { flex-wrap: wrap; }
        .flex-nowrap { flex-wrap: nowrap; }
        .flex-wrap-reverse { flex-wrap: wrap-reverse; }
        
        .justify-start { justify-content: flex-start; }
        .justify-end { justify-content: flex-end; }
        .justify-center { justify-content: center; }
        .justify-between { justify-content: space-between; }
        .justify-around { justify-content: space-around; }
        .justify-evenly { justify-content: space-evenly; }
        
        .align-start { align-items: flex-start; }
        .align-end { align-items: flex-end; }
        .align-center { align-items: center; }
        .align-baseline { align-items: baseline; }
        .align-stretch { align-items: stretch; }
        
        .align-content-start { align-content: flex-start; }
        .align-content-end { align-content: flex-end; }
        .align-content-center { align-content: center; }
        .align-content-between { align-content: space-between; }
        .align-content-around { align-content: space-around; }
        .align-content-stretch { align-content: stretch; }
        
        .flex-fill { flex: 1 1 auto; }
        .flex-grow-0 { flex-grow: 0; }
        .flex-grow-1 { flex-grow: 1; }
        .flex-shrink-0 { flex-shrink: 0; }
        .flex-shrink-1 { flex-shrink: 1; }
        
        .order-first { order: -1; }
        .order-last { order: 6; }
        .order-0 { order: 0; }
        .order-1 { order: 1; }
        .order-2 { order: 2; }
        .order-3 { order: 3; }
        .order-4 { order: 4; }
        .order-5 { order: 5; }
        
        .align-self-auto { align-self: auto; }
        .align-self-start { align-self: flex-start; }
        .align-self-end { align-self: flex-end; }
        .align-self-center { align-self: center; }
        .align-self-baseline { align-self: baseline; }
        .align-self-stretch { align-self: stretch; }
        
        /* Margin ve Padding Sınıfları (0-5 arası) */
        .m-0 { margin: 0 !important; }
        .m-1 { margin: 0.25rem !important; }
        .m-2 { margin: 0.5rem !important; }
        .m-3 { margin: 1rem !important; }
        .m-4 { margin: 1.5rem !important; }
        .m-5 { margin: 3rem !important; }
        
        .mt-0 { margin-top: 0 !important; }
        .mt-1 { margin-top: 0.25rem !important; }
        .mt-2 { margin-top: 0.5rem !important; }
        .mt-3 { margin-top: 1rem !important; }
        .mt-4 { margin-top: 1.5rem !important; }
        .mt-5 { margin-top: 3rem !important; }
        
        .mb-0 { margin-bottom: 0 !important; }
        .mb-1 { margin-bottom: 0.25rem !important; }
        .mb-2 { margin-bottom: 0.5rem !important; }
        .mb-3 { margin-bottom: 1rem !important; }
        .mb-4 { margin-bottom: 1.5rem !important; }
        .mb-5 { margin-bottom: 3rem !important; }
        
        .ml-0 { margin-left: 0 !important; }
        .ml-1 { margin-left: 0.25rem !important; }
        .ml-2 { margin-left: 0.5rem !important; }
        .ml-3 { margin-left: 1rem !important; }
        .ml-4 { margin-left: 1.5rem !important; }
        .ml-5 { margin-left: 3rem !important; }
        
        .mr-0 { margin-right: 0 !important; }
        .mr-1 { margin-right: 0.25rem !important; }
        .mr-2 { margin-right: 0.5rem !important; }
        .mr-3 { margin-right: 1rem !important; }
        .mr-4 { margin-right: 1.5rem !important; }
        .mr-5 { margin-right: 3rem !important; }
        
        .mx-0 { margin-left: 0 !important; margin-right: 0 !important; }
        .mx-1 { margin-left: 0.25rem !important; margin-right: 0.25rem !important; }
        .mx-2 { margin-left: 0.5rem !important; margin-right: 0.5rem !important; }
        .mx-3 { margin-left: 1rem !important; margin-right: 1rem !important; }
        .mx-4 { margin-left: 1.5rem !important; margin-right: 1.5rem !important; }
        .mx-5 { margin-left: 3rem !important; margin-right: 3rem !important; }
        .mx-auto { margin-left: auto !important; margin-right: auto !important; }
        
        .my-0 { margin-top: 0 !important; margin-bottom: 0 !important; }
        .my-1 { margin-top: 0.25rem !important; margin-bottom: 0.25rem !important; }
        .my-2 { margin-top: 0.5rem !important; margin-bottom: 0.5rem !important; }
        .my-3 { margin-top: 1rem !important; margin-bottom: 1rem !important; }
        .my-4 { margin-top: 1.5rem !important; margin-bottom: 1.5rem !important; }
        .my-5 { margin-top: 3rem !important; margin-bottom: 3rem !important; }
        .my-auto { margin-top: auto !important; margin-bottom: auto !important; }
        
        .p-0 { padding: 0 !important; }
        .p-1 { padding: 0.25rem !important; }
        .p-2 { padding: 0.5rem !important; }
        .p-3 { padding: 1rem !important; }
        .p-4 { padding: 1.5rem !important; }
        .p-5 { padding: 3rem !important; }
        
        .pt-0 { padding-top: 0 !important; }
        .pt-1 { padding-top: 0.25rem !important; }
        .pt-2 { padding-top: 0.5rem !important; }
        .pt-3 { padding-top: 1rem !important; }
        .pt-4 { padding-top: 1.5rem !important; }
        .pt-5 { padding-top: 3rem !important; }
        
        .pb-0 { padding-bottom: 0 !important; }
        .pb-1 { padding-bottom: 0.25rem !important; }
        .pb-2 { padding-bottom: 0.5rem !important; }
        .pb-3 { padding-bottom: 1rem !important; }
        .pb-4 { padding-bottom: 1.5rem !important; }
        .pb-5 { padding-bottom: 3rem !important; }
        
        .pl-0 { padding-left: 0 !important; }
        .pl-1 { padding-left: 0.25rem !important; }
        .pl-2 { padding-left: 0.5rem !important; }
        .pl-3 { padding-left: 1rem !important; }
        .pl-4 { padding-left: 1.5rem !important; }
        .pl-5 { padding-left: 3rem !important; }
        
        .pr-0 { padding-right: 0 !important; }
        .pr-1 { padding-right: 0.25rem !important; }
        .pr-2 { padding-right: 0.5rem !important; }
        .pr-3 { padding-right: 1rem !important; }
        .pr-4 { padding-right: 1.5rem !important; }
        .pr-5 { padding-right: 3rem !important; }
        
        .px-0 { padding-left: 0 !important; padding-right: 0 !important; }
        .px-1 { padding-left: 0.25rem !important; padding-right: 0.25rem !important; }
        .px-2 { padding-left: 0.5rem !important; padding-right: 0.5rem !important; }
        .px-3 { padding-left: 1rem !important; padding-right: 1rem !important; }
        .px-4 { padding-left: 1.5rem !important; padding-right: 1.5rem !important; }
        .px-5 { padding-left: 3rem !important; padding-right: 3rem !important; }
        
        .py-0 { padding-top: 0 !important; padding-bottom: 0 !important; }
        .py-1 { padding-top: 0.25rem !important; padding-bottom: 0.25rem !important; }
        .py-2 { padding-top: 0.5rem !important; padding-bottom: 0.5rem !important; }
        .py-3 { padding-top: 1rem !important; padding-bottom: 1rem !important; }
        .py-4 { padding-top: 1.5rem !important; padding-bottom: 1.5rem !important; }
        .py-5 { padding-top: 3rem !important; padding-bottom: 3rem !important; }
        
        /* Metin Hizalama Sınıfları */
        .text-left { text-align: left !important; }
        .text-right { text-align: right !important; }
        .text-center { text-align: center !important; }
        .text-justify { text-align: justify !important; }
        
        /* Görünürlük Sınıfları */
        .visible { visibility: visible !important; }
        .invisible { visibility: hidden !important; }
        
        /* Responsive Gizleme/Gösterme Sınıfları */
        @media (max-width: 575.98px) {
            .hidden-xs { display: none !important; }
        }
        
        @media (min-width: 576px) and (max-width: 767.98px) {
            .hidden-sm { display: none !important; }
        }
        
        @media (min-width: 768px) and (max-width: 991.98px) {
            .hidden-md { display: none !important; }
        }
        
        @media (min-width: 992px) and (max-width: 1199.98px) {
            .hidden-lg { display: none !important; }
        }
        
        @media (min-width: 1200px) {
            .hidden-xl { display: none !important; }
        }
        
        /* Responsive Tasarım için Media Query'ler */
        @media (max-width: 576px) {
            .col-xs-1 { flex: 0 0 8.333333%; max-width: 8.333333%; }
            .col-xs-2 { flex: 0 0 16.666667%; max-width: 16.666667%; }
            .col-xs-3 { flex: 0 0 25%; max-width: 25%; }
            .col-xs-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
            .col-xs-5 { flex: 0 0 41.666667%; max-width: 41.666667%; }
            .col-xs-6 { flex: 0 0 50%; max-width: 50%; }
            .col-xs-7 { flex: 0 0 58.333333%; max-width: 58.333333%; }
            .col-xs-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
            .col-xs-9 { flex: 0 0 75%; max-width: 75%; }
            .col-xs-10 { flex: 0 0 83.333333%; max-width: 83.333333%; }
            .col-xs-11 { flex: 0 0 91.666667%; max-width: 91.666667%; }
            .col-xs-12 { flex: 0 0 100%; max-width: 100%; }
        }
        
        @media (min-width: 576px) {
            .col-sm-1 { flex: 0 0 8.333333%; max-width: 8.333333%; }
            .col-sm-2 { flex: 0 0 16.666667%; max-width: 16.666667%; }
            .col-sm-3 { flex: 0 0 25%; max-width: 25%; }
            .col-sm-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
            .col-sm-5 { flex: 0 0 41.666667%; max-width: 41.666667%; }
            .col-sm-6 { flex: 0 0 50%; max-width: 50%; }
            .col-sm-7 { flex: 0 0 58.333333%; max-width: 58.333333%; }
            .col-sm-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
            .col-sm-9 { flex: 0 0 75%; max-width: 75%; }
            .col-sm-10 { flex: 0 0 83.333333%; max-width: 83.333333%; }
            .col-sm-11 { flex: 0 0 91.666667%; max-width: 91.666667%; }
            .col-sm-12 { flex: 0 0 100%; max-width: 100%; }
        }
        
        @media (min-width: 768px) {
            .col-md-1 { flex: 0 0 8.333333%; max-width: 8.333333%; }
            .col-md-2 { flex: 0 0 16.666667%; max-width: 16.666667%; }
            .col-md-3 { flex: 0 0 25%; max-width: 25%; }
            .col-md-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
            .col-md-5 { flex: 0 0 41.666667%; max-width: 41.666667%; }
            .col-md-6 { flex: 0 0 50%; max-width: 50%; }
            .col-md-7 { flex: 0 0 58.333333%; max-width: 58.333333%; }
            .col-md-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
            .col-md-9 { flex: 0 0 75%; max-width: 75%; }
            .col-md-10 { flex: 0 0 83.333333%; max-width: 83.333333%; }
            .col-md-11 { flex: 0 0 91.666667%; max-width: 91.666667%; }
            .col-md-12 { flex: 0 0 100%; max-width: 100%; }
        }
        
        @media (min-width: 992px) {
            .col-lg-1 { flex: 0 0 8.333333%; max-width: 8.333333%; }
            .col-lg-2 { flex: 0 0 16.666667%; max-width: 16.666667%; }
            .col-lg-3 { flex: 0 0 25%; max-width: 25%; }
            .col-lg-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
            .col-lg-5 { flex: 0 0 41.666667%; max-width: 41.666667%; }
            .col-lg-6 { flex: 0 0 50%; max-width: 50%; }
            .col-lg-7 { flex: 0 0 58.333333%; max-width: 58.333333%; }
            .col-lg-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
            .col-lg-9 { flex: 0 0 75%; max-width: 75%; }
            .col-lg-10 { flex: 0 0 83.333333%; max-width: 83.333333%; }
            .col-lg-11 { flex: 0 0 91.666667%; max-width: 91.666667%; }
            .col-lg-12 { flex: 0 0 100%; max-width: 100%; }
        }
        
        @media (min-width: 1200px) {
            .col-xl-1 { flex: 0 0 8.333333%; max-width: 8.333333%; }
            .col-xl-2 { flex: 0 0 16.666667%; max-width: 16.666667%; }
            .col-xl-3 { flex: 0 0 25%; max-width: 25%; }
            .col-xl-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
            .col-xl-5 { flex: 0 0 41.666667%; max-width: 41.666667%; }
            .col-xl-6 { flex: 0 0 50%; max-width: 50%; }
            .col-xl-7 { flex: 0 0 58.333333%; max-width: 58.333333%; }
            .col-xl-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
            .col-xl-9 { flex: 0 0 75%; max-width: 75%; }
            .col-xl-10 { flex: 0 0 83.333333%; max-width: 83.333333%; }
            .col-xl-11 { flex: 0 0 91.666667%; max-width: 91.666667%; }
            .col-xl-12 { flex: 0 0 100%; max-width: 100%; }
        }
        
        /* Özel Bileşenler */
        .card {
            background: #fff;
            border-radius: 8px;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
            overflow: hidden;
            margin-bottom: 20px;
        }
        
        .card-header {
            padding: 15px 20px;
            border-bottom: 1px solid #eee;
            background: #f8f9fa;
        }
        
        .card-body {
            padding: 20px;
        }
        
        .card-footer {
            padding: 15px 20px;
            border-top: 1px solid #eee;
            background: #f8f9fa;
        }
        
        .btn {
            display: inline-block;
            font-weight: 400;
            text-align: center;
            vertical-align: middle;
            cursor: pointer;
            background-color: transparent;
            border: 1px solid transparent;
            padding: 0.375rem 0.75rem;
            font-size: 1rem;
            line-height: 1.5;
            border-radius: 0.25rem;
            transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out, 
                        border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
        }
        
        .btn-primary {
            color: #fff;
            background-color: #007bff;
            border-color: #007bff;
        }
        
        .btn-primary:hover {
            background-color: #0069d9;
            border-color: #0062cc;
        }
        
        /* Demo stilleri */
        .demo-box {
            background-color: #e9ecef;
            border-radius: 4px;
            padding: 15px;
            margin-bottom: 15px;
            min-height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .section {
            margin: 40px 0;
            padding: 20px 0;
   
        }
        
        .color-box {
            width: 100%;
            height: 100px;
            border-radius: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
            margin-bottom: 15px;
        }
        
        .code {
            font-family: monospace;
            background-color: #f8f9fa;
            padding: 2px 5px;
            border-radius: 3px;
            font-size: 0.9em;
        }


/* dev sınıfları */

   .border { border: 1px solid red !important; }