:root {
    --transition-speed: 0.3s;
    --test-bg: rgb(43, 43, 94);
    --click-link: #1a0dab;
    --text: #111111;
    --caption: #aca9a9;
}

.theme-lightmode {
    --bg: #ffffff;

    --click-link: #1a0dab;
}

.theme-darkmode {
    --bg: #111111;
    --text: #eeeeee;
}


html,
body {
  margin: 0;
  height: 100%;
  width: 100%;
}

body {
    background: var(--bg);
    color: var(--text);
    transition:
        background var(--transition-speed),
        color var(--transition-speed);

    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    font-size: 18px; 
    line-height: 1.7; 
}

a{
    text-decoration: none;
    color: var(--text)
}



.nav-toggle {
    display: none;
}

.base-header {
    position: fixed;
    inset: 0 0 auto 0;

    display: flex;
    justify-content: space-between;
    align-items: center;

    padding: 1rem 2rem;

    z-index: 1000;

    transition:
        opacity .35s ease,
        backdrop-filter .35s ease,
        background .35s ease;
    
    
    background:
        linear-gradient(
            to bottom,
            rgba(255,255,255,.18),
            rgba(255,255,255,.05),
            transparent
        );

    backdrop-filter: blur(12px) saturate(140%);
    -webkit-backdrop-filter: blur(12px) saturate(140%);
}

.base-header.hidden {
    opacity: 0;
    pointer-events: none;
}

nav a::after{
    content:"";

    position:absolute;
    left:0;
    bottom:-4px;

    width:100%;
    height:2px;

    background:white;

    transform:scaleX(0);
    transform-origin:center;

    transition:.25s;
}

nav a:hover::after{
    transform:scaleX(1);
}
.base-header{
    box-shadow:
        0 10px 30px rgba(0,0,0,.08);
}

nav a:hover{
    color:white;
}

.base-header{
    animation:headerFloat 8s ease-in-out infinite;
}

@keyframes headerFloat{

    0%,100%{
        transform:translateY(0);
    }

    50%{
        transform:translateY(3px);
    }

}


nav{
    display:flex;
    align-items:center;
    gap:2rem;
}

nav a{
    position:relative;

    color:white;
    text-decoration:none;

    font-size:1.125rem;
    font-weight:500;

    padding:.4rem .2rem;

    transition:.25s;
}




footer { 
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

footer > p {
    margin: 0;
    color: var(--caption);
}

.base-footer nav > a {
    color: var(--caption);
    text-decoration: none;
    font-size: 0.9rem;
}


.logo{
    position:relative;

    color:white;

    font-size:1.7rem;
    font-weight:700;

    text-decoration:none;

}

.logo::after{

    content:"";

    position:absolute;

    left:2px;
    bottom:-4px;

    width:28px;
    height:2px;

    background:rgba(255,255,255,.65);

    transition:.3s;
}

.logo:hover::after{
    width:100%;
}



.base-footer > p {
    color: var(--caption);
    font-size: 0.9rem;
}

.back-to-top {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    bottom: 0;
    left: 0;
    right: 0;
    margin: 15px;
    color: var(--caption);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition:
        background var(--transition-speed),
        color var(--transition-speed);
}

.nav-icon-btn {

    background: none;

    border: none;

    color: inherit;

    cursor: pointer;

    font-size: 1rem;

    opacity: .7;

    transition:

        opacity .25s ease,

        transform .25s ease;

}

.nav-icon-btn:hover {

    opacity: 1;

    transform: translateY(-1px);

}

.nav-icon-btn.active {

    opacity: 1;

}