:root {
    --fg: #33ff33;
    --bg: #0a0a0a;
    --bg-elevated: #141414;
    --font-mono: ui-monospace, "Cascadia Mono", "Cascadia Code", "SFMono-Regular", Menlo, Consolas, "Liberation Mono", "DejaVu Sans Mono", monospace;
    color-scheme: dark;
}

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

html {
    background: var(--bg);
    color: var(--fg);
    font-family: var(--font-mono);
    font-size: 100%;
    line-height: 1.5;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: underline;
    text-underline-offset: 0.2em;
}

a:hover {
    background: var(--fg);
    color: var(--bg);
    text-decoration: none;
}

:focus-visible {
    outline: 2px solid var(--fg);
    outline-offset: 2px;
}

::selection {
    background: var(--fg);
    color: var(--bg);
}

kbd,
code {
    font-family: inherit;
    border: 1px solid currentColor;
    padding: 0 0.25em;
}

.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.skip-link {
    position: absolute;
    left: 1rem;
    top: -100%;
    z-index: 100;
    padding: 0.5rem 1rem;
    background: var(--fg);
    color: var(--bg);
    font-weight: bold;
}

.skip-link:focus {
    top: 1rem;
}

.dim {
    opacity: 0.8;
}

/* Page */

.page {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 64rem;
    margin: 0 auto;
    padding: 1rem;
    gap: 1rem;
}

.topbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem 1rem;
}

.site-name {
    font-weight: bold;
}

.color-picker {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

select,
input,
button {
    font: inherit;
    color: var(--fg);
    background: var(--bg);
    border: 1px solid var(--fg);
    padding: 0.25rem 0.5rem;
    border-radius: 0;
}

button {
    cursor: pointer;
}

button:hover:not(:disabled) {
    background: var(--fg);
    color: var(--bg);
}

button:disabled,
input:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

main {
    flex: 1;
}

.footer {
    font-size: 0.875rem;
    text-align: center;
}

.footer p {
    margin: 0;
}

/* Terminal window */

.terminal {
    border: 1px solid var(--fg);
    background: var(--bg);
    box-shadow: 0 0 1.5rem color-mix(in srgb, var(--fg) 25%, transparent);
}

.terminal-titlebar {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.375rem 0.75rem;
    border-bottom: 1px solid var(--fg);
    background: var(--bg-elevated);
    font-size: 0.875rem;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.terminal-dots {
    display: inline-flex;
    gap: 0.375rem;
    flex: none;
}

.terminal-dots span {
    width: 0.75rem;
    height: 0.75rem;
    border: 1px solid var(--fg);
    border-radius: 50%;
}

.terminal-dots span:first-child {
    background: var(--fg);
}

.terminal-screen {
    position: relative;
    padding: 1rem 1.25rem 1.5rem;
    min-height: 60vh;
    text-shadow: 0 0 0.3rem color-mix(in srgb, var(--fg) 45%, transparent);
    overflow-wrap: anywhere;
}

/* Subtle CRT scanlines */
.terminal-screen::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: repeating-linear-gradient(to bottom, transparent 0, transparent 2px, rgb(0 0 0 / 0.18) 3px);
}

.banner-art {
    margin: 0 0 0.5rem;
    font-size: clamp(0.4rem, 1.9vw, 1rem);
    line-height: 1;
    overflow: hidden;
}

.banner-title {
    margin: 0;
    font-size: 1.25rem;
    font-weight: bold;
}

.banner p {
    margin: 0.25rem 0 0;
}

.echo {
    margin: 1rem 0 0.25rem;
}

.ps1 {
    font-weight: bold;
    margin-right: 0.5ch;
    white-space: nowrap;
}

/* Rendered markdown */

.content {
    margin: 1rem 0;
}

.content:focus {
    outline: none;
}

.content:focus-visible {
    outline: 1px dashed var(--fg);
    outline-offset: 0.5rem;
}

.content h1,
.content h2,
.content h3,
.content h4 {
    font-size: 1rem;
    margin: 1.5rem 0 0.5rem;
    text-transform: uppercase;
}

.content h1 {
    font-size: 1.25rem;
    margin-top: 0.5rem;
}

.content h1::before {
    content: "# ";
    content: "# " / "";
}

.content h2::before {
    content: "## ";
    content: "## " / "";
}

.content h3::before {
    content: "### ";
    content: "### " / "";
}

.content ul {
    list-style: none;
    padding-left: 2ch;
}

.content ul > li::before {
    content: "- ";
    content: "- " / "";
    margin-left: -2ch;
}

.content ul.contains-task-list > li::before {
    content: none;
}

.content img {
    display: block;
    max-width: 100%;
    height: auto;
    image-rendering: pixelated;
    border: 1px solid var(--fg);
    margin: 1rem 0;
}

.content table {
    border-collapse: collapse;
    margin: 1rem 0;
    display: block;
    overflow-x: auto;
}

.content th,
.content td {
    border: 1px solid var(--fg);
    padding: 0.25rem 0.75rem;
    text-align: left;
}

.content blockquote {
    margin: 1rem 0;
    padding-left: 1rem;
    border-left: 2px solid var(--fg);
}

.content pre {
    overflow-x: auto;
    border: 1px dashed var(--fg);
    padding: 0.75rem;
}

.content pre code {
    border: 0;
    padding: 0;
}

.content hr {
    border: 0;
    border-top: 1px dashed var(--fg);
}

/* Menu */

.menu {
    margin: 1.5rem 0 1rem;
}

.menu-heading {
    font-size: 1rem;
    margin: 0 0 0.25rem;
    text-transform: uppercase;
}

.menu ol {
    list-style: none;
    margin: 0;
    padding: 0 0 0 2ch;
}

.menu li {
    margin: 0.25rem 0;
}

.menu a {
    display: inline-block;
    padding: 0.125rem 0.5ch;
    min-height: 1.75rem;
}

.menu a[aria-current="page"] {
    background: var(--fg);
    color: var(--bg);
    text-shadow: none;
}

.menu a[aria-current="page"]::after {
    content: " <";
    content: " <" / "";
}

.menu p {
    margin: 0.5rem 0 0;
}

/* Command history */

.history-entry .output {
    margin: 0;
    white-space: pre-wrap;
}

/* Prompt */

.prompt {
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.prompt-input {
    flex: 1;
    min-width: 10ch;
    border: 0;
    padding: 0;
    background: transparent;
    caret-color: var(--fg);
    caret-shape: block;
    text-shadow: inherit;
}

.prompt-input:focus {
    outline: none;
}

.prompt:focus-within {
    outline: 1px dashed var(--fg);
    outline-offset: 0.25rem;
}

/* Flappy easter egg */

.flappy {
    margin-top: 1rem;
    text-align: center;
}

.flappy-canvas {
    display: block;
    margin: 0 auto;
    height: min(70vh, 512px);
    max-width: 100%;
    aspect-ratio: 144 / 256;
    image-rendering: pixelated;
    border: 1px solid var(--fg);
    touch-action: manipulation;
}

.flappy-controls {
    margin: 0.5rem 0 0;
}

/* Admin */

.admin-form label,
.content label {
    display: block;
    margin-bottom: 0.25rem;
}

.admin-preview img {
    max-width: 100%;
}

.admin-images {
    padding-left: 2ch;
}

/* Blazor */

#blazor-error-ui {
    background: var(--bg);
    color: var(--fg);
    border-top: 1px solid var(--fg);
    bottom: 0;
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}

#blazor-error-ui .dismiss {
    position: absolute;
    right: 0.75rem;
    top: 0.5rem;
}

.blazor-error-boundary {
    padding: 1rem;
    border: 1px solid var(--fg);
}

.blazor-error-boundary::after {
    content: "An error has occurred.";
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

@media (forced-colors: active) {
    .terminal-screen::after {
        display: none;
    }
}

@media (max-width: 40rem) {
    .page {
        padding: 0.5rem;
    }

    .terminal-screen {
        padding: 0.75rem;
    }
}