html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
  position: relative;
  min-height: 100%;
}

body {
  margin-bottom: 60px;
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
  color: var(--bs-secondary-color);
  text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
  text-align: start;
}

body {
  font-family: Arial, sans-serif;
  max-width: 900px;
  margin : 0 auto;
  padding: 20px
  background-color: #f9f9f9;

}
 h1, h2, h3 {
     color:#000;
 }

 header img {
     border-radius:0;
     margin-top: 10px;
 }
 nav {
     margin-top:15px;
     margin-bottom:25px;
 }
 nav a {
     margin: 0 10px;
     text-decoration: none;
     color: #000;
     font-weight: bold;
 }
 nav a:hover {
     color: #007ACC;
 }
 input, textarea {
     display: block;
     width: 100%;
     margin-bottom: 10px;
     padding: 8px;
     border: 1px solid #ccc;
     border-radius: 4px;
 }
 button {
  padding: 10px 20px;
  background-color: #007ACC;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
 }
 button:hover {
     background-color: #0005A99;
 }

 .side-menu a i {
     color: #bcbcbc;
     font-size: 24px;
     transition: color 0.3s ease, transform 0.2s ease;
 }

 .side-menu a:hover i {
     color: #0077b6;
     transform: scale(1.1);
 }

 .side-menu {
     position: fixed;
     top: 50%;
     left: 0;
     transform: translateY(-50%);
     display: flex;
     flex-direction: column;
     background-color: #ffffff;
     padding: 10px;
     border-radius: 0 10px 10px 0;
     box-shadow: 2px 2px 10px rgba(0,0,0,0.1);
     z-index: 1000;
 }

 .side-menu a {
     text-align: center;
     margin: 15px 0;
     text-decoration: none;
 }

 .logo-box {
     text-align: left;
     padding: 20px 0  15px 0;
     margin-bottom: 20px;
 }

 .logo-box img {
     width: 140px;
 }

.main-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 80px); /* NAVBAR yüksekliği kadar çıkarıyoruz */
    text-align: center;
    margin-left: 140px; /* Sol menünün genişliğine göre ayarla */
}

.side-menu {
    background-color: #e8e8e8;
    padding: 20px;
    min-height: 100vh;
}

/* --------------------------- */
/* Mobil uyumluluk ayarları    */
/* --------------------------- */
@media (max-width: 768px) {
    .main-content {
        margin-left: 0;
        padding: 10px;
    }

    .side-menu {
        position: relative;
        top: 0;
        left: 0;
        transform: none;
        flex-direction: row;
        justify-content: space-around;
        width: 100%;
        min-height: auto;
        padding: 10px 0;
    }

    .logo-box img {
        width: 100px;
    }

    nav a {
        margin: 5px;
        font-size: 14px;
    }

    h1, h2, h3, p {
        font-size: 16px;
    }

    input, textarea, button {
        width: 100%;
        margin-bottom: 10px;
    }
}