:root {
    --color-background-top: #f93;
    --color-background-bottom: #ff6;

    --color-green-left: #099;
    --color-green-right: #0f9;

    --color-blue-left: #06c;
    --color-blue-right: #09f;

    --color-scrollbar-thumb: #999;
    --color-scrollbar-thumb-hover: #bbb;

    --size-text: 24px;

    font-family: "Kanit";
}

body {
    background: linear-gradient(0deg, var(--color-background-top) 0%, var(--color-background-bottom) 100%);

    max-width: 56rem;

    margin: 0 auto;
    padding: 2rem;

    font-size: var(--size-text);
}

object {
    height: 5rem;
}

h1 {
    font-size: 6rem;
    font-weight: bold;
    margin: 0;
}

h2 {
    font-size: 3rem;
    font-weight: bold;

    margin: 4rem 0 0 0;
}

h3 {
    font-size: 2rem;
    font-weight: normal;
}

p, li {
    font-size: var(--size-text);
    font-weight: normal;
    margin-top: 0.5rem;
}

iframe {
    border: 0.3rem solid black;
    border-radius: 12px;
    box-shadow: 0.2rem 0.2rem 0.2rem rgba(0, 0, 0, 0.6);

    margin-top: 1rem;
    margin-bottom: 3rem;

    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

a {
    color: black;
    text-decoration: none;
}

.button {
    border: 0.3rem solid black;
    border-radius: 12px;
    box-shadow: 0.2rem 0.2rem 0.2rem rgba(0, 0, 0, 0.6);

    font-size: 2rem;
    padding: 1rem;

    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.button:hover {
    transform: translate(-0.5rem, -0.5rem);
    box-shadow: 0.5rem 0.5rem 0.5rem rgba(0, 0, 0, 0.6);
}

.green {
    background: linear-gradient(90deg, var(--color-green-left) 0%, var(--color-green-right) 100%);
}

.blue {
    background: linear-gradient(90deg, var(--color-blue-left) 0%, var(--color-blue-right) 100%);
}

::-webkit-scrollbar {
    width: 14px;
}

::-webkit-scrollbar-track {
    background: var(--color-background-bottom);
}

::-webkit-scrollbar-thumb {
    background: var(--color-scrollbar-thumb); 
    border: 3px solid black;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-scrollbar-thumb-hover); 
}

@media (max-width: 768px) {
    body {
        max-width: unset;
    }

    iframe {
        width: 90%;
    }
}

@font-face {
    font-family: "Kanit";
    src: url("assets/Kanit-Regular.ttf") format("truetype");
    font-weight: normal;
}

@font-face {
    font-family: "Kanit";
    src: url("assets/Kanit-SemiBold.ttf") format("truetype");
    font-weight: 600;
}