:root {
    --bg-main: #0f0f0f;
    --bg-header-footer: #0f0f0f;
    --bg-center: #383838;
    --text-main: white;
    --text-accent: rgb(0, 153, 255);
    --text-highlight: yellow;
    --link-color: rgb(0, 153, 255);
    --btn-color: rgb(0, 153, 255);
    --btn-hover: rgb(0, 75, 124);
}

body {
    margin: 0;
    color: var(--text-main);
    font-family: Arial, Helvetica, sans-serif;
    background-color: var(--bg-main);
}

header {
    height: 10vh;
    min-height: 50px;
    max-height: 100px;
    background-color: var(--bg-header-footer);
    color: var(--text-accent);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0 20px;
}

main {
    height: 83vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

footer {
    height: 7vh;
    min-height: 50px;
    max-height: 100px;
    background-color: var(--bg-header-footer);
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--text-accent);
}

.collum h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin: 0;
    text-align: center;
    color: var(--text-accent);
}

.collum{
    height: 100%;
    max-width: 1200px;
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;

}
.center {
    background-color: var(--bg-center);
    padding: 20px;
    border-radius: 20px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    width: 400px;
    max-width: 80%;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
}

/* Links */
a {
    font-size: 20px;
    text-decoration: none;
    color: var(--link-color);
    cursor: pointer;
    display: inline-block;
    position: relative;
}
a::after {
    content: '';
    position: absolute;
    width: 100%;
    transform: scaleX(0);
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--link-color);
    transition: transform 0.25s ease-out;
    transform-origin: bottom right;
}
a:hover::after {
    transform: scaleX(1);
    transform-origin: bottom left;
}

/* Buttons */
.btn {
    background-color: var(--btn-color);
    padding: 10px;
    color: white;
    border-radius: 5px;
    border: none;
    cursor: pointer;
    transition: background 0.2s ease;
}
.btn:hover {
    background-color: var(--btn-hover);
}
.btn:active {
    transform: translateY(2px);
}