*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Cairo', sans-serif;
    background: #f4f4f4;
    text-align: center;
}

header{
    width: 100%;
    margin-bottom: 50px;
}

.nav{
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 50px;
    background: #fff;
    position: relative;
}

.nav .logo{
    width: 20%;
}

.nav .logo a{
    text-decoration: none;
    font-size: 30px;
    color: #858cec;
    font-weight: bold;
}

.nav ul{
    display: flex;
    justify-content: start;
    align-items: center;
    list-style-type: none;
    width: 80%;
    transition: 0.4s ease;
}

.nav ul li{
    padding: 0px 20px;
    font-size: 17px;
}

.nav ul li:hover{
    cursor: pointer;
    color: rgb(78, 38, 255);
}

#li_2 select,
#li_3 select{
    background-color: inherit;
    font-family: 'Cairo', sans-serif;
    border: none;
    font-size: 16px;
    text-align: center;
    outline: none;
}

li a{
    text-decoration: none;
    color: #000;
}

/* زر تسجيل الدخول */
.sin{
    display: flex;
    justify-content: center;
    align-items: center;
    margin-left: 93px;
}

.sin button{
    color: white;
    font-size: 13px;
    padding: 7px 15px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    background-color: rgb(78, 38, 255);
    font-family: 'Cairo', sans-serif;
    transition: 0.3s;
}

.sin button:hover{
    background-color: #858cec;
}

.burger{
    display: none;
    cursor: pointer;
}

.burger i{
    font-size: 28px;
}

.container {
    background: #fff;
    padding: 30px;
    max-width: 500px;
    margin: 0 auto;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

input[type=text] {
    width: 70%;
    padding: 10px;
    margin: 10px 0;
    border-radius: 5px;
    border: 1px solid #ccc;
}

button {
    padding: 10px 20px;
    border: none;
    background: #007BFF;
    color: #fff;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background: #0056b3;
}

.result {
    margin-top: 20px;
    text-align: left;
    background: #e9ecef;
    padding: 15px;
    border-radius: 5px;
}

.error {
    color: red;
    font-weight: bold;
}
@media (max-width: 768px){
    
  .nav .logo {
    width: 50%;
    padding: 10px 0px 10px 14px;
}
.nav .logo a {
  font-size: 20px;
}
 .nav {
    padding: 10px 20px !important;
  }
  .nav ul {
    position: absolute;
        top: 70px;
        right: 0;
        width: 100%;
        background: white;
        display: block;
        text-align: center;
        padding: 20px 0;
        transform: translateY(-400px);
        opacity: 0;
        pointer-events: none;
        border-top: 1px solid #eee;
  }
    .nav ul.show{
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .nav ul li{
        margin: 18px 0;
        font-size: 18px;
    }

    /* زر تسجيل الدخول داخل القائمة */
    .sin{
        margin-left: 0;
    }

    .burger{
        display: flex;
        align-items: center;
    }
.sin {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 10px 50px 10px 0px;
    gap: 20px;
    width: auto;
}
}