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

body {
    font-family:system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: black;
    color:lightgray;
    min-height: 100vh;
    line-height: 1.5;
}

/*Gradient and layer blur effect*/
.image-gradient{
   position: absolute;
   top:0;
   right:0; 
   opacity: 0.5;
   z-index: -1;
}

.layer-blur{
    height: 0;
    width: 30rem;
    position: absolute;
    top: 20%;
    right: 0;
    box-shadow: 0 0 700px 15px white;
    rotate: -30deg;
    z-index: -1;
}

/*Container*/

.container{
    width: 100%;
    margin: 0;
    padding: 0 2rem;
    position: relative;
    overflow: hidden;
}

header{
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5rem;
    

}

header h1{
    margin: 0;
    font-size: 3rem;
    font-weight: 300;
}

nav{
    display:flex;
    align-items: center;
    gap: 3rem;
    margin-left: -5%;
}

nav a{
    font-size: 1rem;
    letter-spacing: 0.1rem;
    transition: color 0.2s ease;
    text-decoration: none;
    color:inherit;
    z-index: 999;
}

nav a:hover{
    color: gray;
}

.btn-signing{
    background-color: lightgray;
    color: black;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    border: none;
    font-size: 1rem;
    font-weight: 500;
    transition: background-color 0.2s ease;
    cursor: pointer;
    z-index: 999;

}
.btn-signing:hover{
    background-color: white;
}

/*Main*/

main{
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: calc(90vh - 6rem);
}

.content{
    max-width: 40rem;
    margin-left: 10%;
    z-index: 999;
}

.tag-box{
    position: relative;
    width: 18rem;
    height: 2.5rem;
    border-radius: 50px;
    background: linear-gradient(to right,#656565,#7f42a7,#6600c5,#5300a0,#757575,#656565);
    background-size: 200%;
    animation: animationGradient 2.5s linear infinite;
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.3);
}

@keyframes animationGradient {
    to {
        background-position: 200%;
    }
}

.tag-box .tag{
    position: absolute;
    inset: 3px 3px 3px 3px;
    background-color: black;
    border-radius: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: 0.5s ease;
    cursor: pointer;
}

.tag-box .tag:hover{
    color: purple;
}



.content h1{
    font-size: 4rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    margin: 2rem 0;
    line-height: 1.2;
    text-shadow: 0 0 10px rgba(128, 128, 128, 0.418);
}

.description{
    font-size: 1.2rem;
    letter-spacing: 0.05em;
    max-width: 35rem;
    color: gray;
}


.buttons{
    display: flex;
    gap: 1rem;
    margin-top: 3rem;
    padding-bottom: 3rem;
}

.btn-get-started{
    text-decoration: none;
    border: 1px solid #2a2a2a;
    padding: 0.7rem 1.2rem;
    border-radius: 50px;
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    transition: background-color 0.2s ease;
}

.btn-get-started:hover{
    background-color: #1a1a1a;
}

.btn-signing-main{
    text-decoration: none;
    background-color: lightgray;
    color: black;
    padding: 0.6rem 2.5rem;
    border-radius: 50px;
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    transition: background-color 0.2s ease ;
}

.btn-signing-main:hover{
    background-color: gray;
}

/*end main */

/*robot*/
.robot-3d{
    position: absolute;
    top: 0;
    right: -20%;
}


/*tablet responsisve*/


@media (max-width:1300px){
    header{
        padding:1rem 0.5rem;
    }
    .content{
        margin-top:85%;
    }
    .robot-3d{
        scale:0.8;
        top:-20%;
        right:2%;
    }

     /*logo cover*/
.cover-logo {
  position: absolute;
  top: 68%;
  left: 80%;
  transform: translate(-50%, -50%);
  width: 200px;
  height: 60px;
  background-color: rgb(0, 0, 0);
  border-radius: 12px; /* optional: rounded corners */
  opacity: 1;        /* optional: slightly transparent */
  z-index: 0
  ;
}



}

/*mobile responsive*/

@media (max-width: 768px){
    header{
        padding:1rem 0.1rem;
    }
    
    nav{
        display: none;
    }
    header h1{
        font-size: 2rem;
    }

    .btn-signing {
        padding: 0.6rem 1.5rem;
    }

    .content {
        margin-top: 25rem;
    }
    .robot-3d{
        scale: 0.5;
        top: -25%;
        right: 0;
    }

    .content{
        max-width: 30rem;
        margin-left: 10%;
    }

    .tag-box{
        width: 12rem;
    }

    .content h1{
        font-size: 2.5rem;
    }

    .description{
        font-size: 1rem;
    }

    .btn-get-started{
        font-size: 0.6rem;
        padding: 0.8rem 1.2rem;
    }

    .btn-signing-main{
        font-size: 0.6rem;
        padding: 0.8rem 2rem;
    }
    

     /*logo cover*/
.cover-logo {
  position: absolute;
  top: 48%;
  left: 65%;
  transform: translate(-50%, -50%);
  width: 120px;
  height: 60px;
  background-color: rgb(0, 0, 0);
  border-radius: 12px; /* optional: rounded corners */
  opacity: 1;        /* optional: slightly transparent */
  z-index: 0
  ;
}


}