/* Basic reset */
body, html {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    overflow-x: hidden;
}

.texture-selector {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    gap: 10px;
    z-index: 20;
}

.texture-option {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-size: cover;
    background-position: center;
    cursor: pointer;
    border: 2px solid transparent;
    transition: border-color 0.3s;
}

.texture-option.selected {
    border-color: white;
}


/* Container  */
.container {
    position: relative;
}

/* Full-screen Three.js canvas  */
#threejs-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1; 
}

/* Header styling */

.earth .header,
.pluto .header,
.unknown .header {
    position: absolute;
    top: 20px;
    left: 20px;
    color: white;
    z-index: 1;
    transition: transform 0.2s ease-out; 
    will-change: transform; 
    user-select: none;       
    pointer-events: none;
}

/* Initial hide headers */
.earth .header,
.pluto .header,
.unknown .header {
    display: none;
}


/* overlay text */
.hero {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    text-align: center;
    z-index: 1; 
    user-select: none;       
}



.text-content h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.render-text {
    text-wrap: nowrap;
    text-shadow:2px 2px 2px rgba(0,0,0,1);
    margin: 3.5rem 0 0;
    padding: 35vh 30vw;
    font-size: 1.2rem;
    line-height: 1.5;
    transition: opacity .1s ease;
}
.render-text:hover{ 
    opacity: 0;
}

/* whitespace content */


.back {
    overflow: hidden;
    position:relative;
    margin:3px 0 0;
    padding:5px 0;
    font-size: 15px;
    }
.back a {
    color: hsl(0, 0%, 0%);
    text-decoration: none;
    transition: 0.2s ease-out;
    padding: 4px;
    border-radius: 20%;
    
    border-bottom: 3px solid #86acb6;
   }

.back a:hover {
        color: #ffffff;
        background:linear-gradient(#bff1ff,#f5f5f5);
        border-top: 1px solid #d3d3d3;
        border-bottom: 3px solid #bff1ff;
        }

.back a:active {
    color: #ffffff;
    background: linear-gradient(#f5f5f5,#1a23412e);
    border-top: 1px solid #d3d3d300;
    border-bottom: 3px solid #d5d5d52c;
    }


.content {
    padding: 50px;
    background-color: #f5f5f5;
    color: #333;
}

.content h2 {
    font-size: 2rem;
}

.content p {
    font-size: 1.2rem;
    line-height: 1.5;
}

.steps {
    padding: 6%;
    background-color: #d5ecff86;
   backdrop-filter: blur(20px);
}
.steps h1 {
    color: white;
}

.project-title {
    font-size: 3rem;
    background-color: #ffffff16;
    color: white;

    text-align: center;
    margin: 0rem;
    padding: 1rem;
}

.overview {
    display: flex; 
    align-items: center;
    flex-direction: column;
    padding: 10rem 10%;
    font-size: 1.3rem;
    text-shadow: 0px 0px 1rem rgb(0, 0, 0);
    color: rgb(237, 237, 237);
}

.source-code {
    justify-self: center;
    text-align: left;
    color: #bff1ff;
    background-color: #00021b16;
    text-shadow: 0 0 0;
    margin: 6rem 0.5rem 3rem;
    
}