:root {
    --text-main: rgba(10, 10, 10, 0.9);
    --logo-red: rgb(255, 64, 64);
    --logo-green: rgb(64, 255, 64);

    --card-bg: rgba(230, 230, 230, 0.8);
    --button-bg: rgba(255, 255, 255, 0.8);
    --border-radius: 8px;
    --max-width: 800px;
}

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

@font-face {
    font-family: "Minecraft";
    src: url(/fonts/MinecraftRegular-Bmg3.otf);
}

body {
    background: linear-gradient(in oklab to bottom, rgb(45, 85, 255), rgb(180, 200, 255));
    color: var(--text-main);
    font-family: "Minecraft", "Share Tech Mono", monospace, sans-serif;
    font-size: 0.95rem;
    padding: 24px;
    min-height: 100vh;
}

img {
    display: block;
    width: 100%;
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    border: 1px solid rgba(10, 10, 10, 0.15);
}

video {
    width: 100%;
    max-width: 600px;
    height: auto;
    border-radius: var(--border-radius);
    border: 2px solid rgba(10, 10, 10, 0.15);
    display: block;
    margin: auto;
}

abbr {
    text-decoration: underline dotted var(--text-main);
    cursor: help;
}

a {
    color: rgb(43, 85, 255);
    transition: opacity 0.2s ease;
}

a:hover {
    opacity: 0.7;
}

iframe {
    width: 100%;
    max-width: 600px;
    height: 350px;
    border-radius: var(--border-radius);
    border: 1px solid rgba(10, 10, 10, 0.15);
    display: block;
    margin: 12px auto;
}

.global-header, .main-container {
    max-width: var(--max-width);
    width: 100%;
    margin-left: auto;
    margin-right: auto;
}

.global-header {
    display: flex;
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 4px; 
}

.main-container {
    margin: 0 auto;
}

.logo {
    font-size: 2.25rem;
    font-weight: bold;
}

.letter-b {
    color: var(--logo-red);
}

.letter-h {
    color: var(--logo-green);
}

.nav-menu {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}

.nav-link {
    background-color: var(--button-bg);
    color: var(--text-main);
    border-radius: var(--border-radius);
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: bold;
    padding: 4px 8px;
}

.card-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.card-item {
    background-color: var(--card-bg);
    color: var(--text-main);
    border-radius: var(--border-radius);
    padding: 8px;
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: 6px;
    font-weight: bold;
}

.card-content {
    margin-top: 8px;
}

.card-action {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 4px;
}

.rules {
    list-style: none;
    padding-left: 0;
    margin-top: 8px;
}

.rules li {
    margin-bottom: 8px;
    text-align: left;
}

.rules li:last-child {
    margin-bottom: 0;
}

.line {
    border: none;
    border-top: 1px solid rgba(10, 10, 10, 0.15);
    margin: 12px 0;
}

.card-footer {
    font-size: 0.95rem;
    opacity: 0.8;
}

.card-footer p {
    margin-bottom: 6px;
}

.card-footer p:last-child {
    margin-bottom: 0;
}

@media (max-width: 768px) {
    .global-header {
        flex-direction: column;
        align-items: flex-start;
        margin-bottom: 4px;
    }
    .nav-menu {
        width: 100%;
    }
    .nav-link {
        flex: 1;
        text-align: center;
    }
}

@media (max-width: 400px) {
    .nav-menu {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 4px;
    }
}