/* ---------------------------------------------------------
   zenpunk
   intentionally simple, fixed-width website
   --------------------------------------------------------- */

@font-face {
    font-family: "IBM Plex Mono";
    src: url("/fonts/ibm-plex-mono/IBMPlexMono-Regular.woff2") format("woff2");
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "IBM Plex Mono";
    src: url("/fonts/ibm-plex-mono/IBMPlexMono-Medium.woff2") format("woff2");
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "IBM Plex Mono";
    src: url("/fonts/ibm-plex-mono/IBMPlexMono-SemiBold.woff2") format("woff2");
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

:root {
    color-scheme: dark;
    --background: #1c1c1c;
    --foreground: #ffffff;
    --accent: #e00712;
    --sand: #cfa36e;
    --error: #ff6b72;
    --muted: #aaa8a1;
    --border: #3b3530;
    --surface: #151515;
    --on-accent: #ffffff;
    --code-background: #050606;
    --code-foreground: #e8e5dc;
    --code-border: #655b50;
    --code-border-width: 2px;

    --content-width: 720px;
    --page-gutter: 55px;

    --font-mono:
        "IBM Plex Mono",
        "Cascadia Mono",
        Consolas,
        monospace;
}

@media (prefers-color-scheme: light) {
    :root {
        color-scheme: light;
        --background: #f7f7f5;
        --foreground: #1c1c1c;
        --sand: #806039;
        --error: #b4232c;
        --muted: #626262;
        --border: #d8d3cd;
        --surface: #eeedea;
        --code-background: #ebebeb;
        --code-foreground: #1c1c1c;
        --code-border: #a3a3a3;
        --code-border-width: 2px 0 0 2px;
    }
}

/* ---------------------------------------------------------
   BASE
   --------------------------------------------------------- */

* {
    box-sizing: border-box;
}

html {
    background: var(--background);
}

body {
    width: min(100%, calc(var(--content-width) + 2 * var(--page-gutter)));

    margin: 0;
    padding: 48px var(--page-gutter) 80px;
    overflow-wrap: anywhere;

    background: var(--background);
    color: var(--foreground);

    font-family: var(--font-mono);

    font-size: 16px;
    line-height: 1.65;

    font-weight: 500;
}

/* ---------------------------------------------------------
   TEXT
   --------------------------------------------------------- */

p {
    margin-top: 0;
    margin-bottom: 1.25rem;
}

strong,
b {
    font-weight: 700;
}

em,
i {
    font-style: italic;
}

small {
    font-size: 0.8rem;
    color: var(--muted);
}

/* ---------------------------------------------------------
   LINKS
   --------------------------------------------------------- */

a {
    color: var(--foreground);
    text-decoration-line: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
}

a:visited {
    color: var(--foreground);
}

a:hover {
    background: var(--accent);
    color: var(--on-accent);
    text-decoration: none;
}

a:focus {
    outline: 1px dashed var(--foreground);
    outline-offset: 3px;
}

/* Links that wrap larger visual blocks should not invert. */
.post-card-image:hover,
.book-card:hover {
    background: transparent;
    color: inherit;
}

/* ---------------------------------------------------------
   HEADINGS
   --------------------------------------------------------- */

h1,
h2,
h3,
h4,
h5,
h6 {
    margin-top: 0;
    color: var(--foreground);
    font-family: inherit;
    font-weight: 700;
    line-height: 1.3;
}

h1 {
    margin-bottom: 2rem;
    font-size: 2.2rem;
}

h2 {
    margin-top: 2.75rem;
    margin-bottom: 1rem;

    font-size: 1.3rem;
    font-weight: 600;
}

h3 {
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;

    font-size: 1rem;
    font-weight: 500;
}

h4,
h5,
h6 {
    font-size: 0.95rem;
}

/* ---------------------------------------------------------
   SITE HEADER
   --------------------------------------------------------- */

.site-header {
    width: 100%;
    margin: 0 0 100px 0;
    padding: 0 0 45px 0;
    border-bottom: 1px solid var(--accent);
}

.site-header.site-header-compact {
    margin-bottom: 2rem;
}

.site-title {
    display: inline-block;
    margin-bottom: 1.5rem;

    color: var(--foreground);

    font-family:
        "IBM Plex Mono",
        "Noto Sans CJK SC",
        "Noto Sans CJK JP",
        monospace;

    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-decoration: none;
}

.site-title-main {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.1em;
}

.site-title-sub {
    display: block;
    margin-top: 0.15rem;

    color: var(--muted);

    font-size: 0.55rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.site-title,
.site-title:visited,
.site-title:hover {
    color: var(--accent);
    background: transparent;
}

/* ---------------------------------------------------------
   NAVIGATION
   --------------------------------------------------------- */

.site-navigation {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    column-gap: 24px;
    row-gap: 5px;
    align-items: start;
    max-width: 100%;
}

.site-navigation a {
    display: block;
    width: max-content;
    line-height: 1.45;
}

.nav-bracket {
    color: var(--accent);
}

.language-navigation {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1.25rem;
    font-size: 0.85rem;
}

.site-navigation a:hover .nav-bracket {
    color: var(--on-accent);
}

.nav-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

/* ---------------------------------------------------------
   MAIN
   --------------------------------------------------------- */

main {
    width: 100%;
}

/* ---------------------------------------------------------
   GENERIC PAGE
   --------------------------------------------------------- */

.page {
    width: 100%;
}

.page-header {
    margin-bottom: 2.5rem;
}

.page-header h1 {
    margin-bottom: 0.75rem;
}

.page-description {
    color: var(--muted);
}

.page-content {
    width: 100%;
}

/* ---------------------------------------------------------
   HOME
   --------------------------------------------------------- */

.home {
    width: 100%;
}

.home > :first-child {
    margin-top: 0;
}

.home-intro {
    margin-bottom: 4rem;
}

.ascii-art {
    margin-block: 2rem;
}

/* Reusable text artwork: preserve its spacing without decorative framing. */
.ascii-art pre {
    margin: 0;
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--foreground);
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.15;
    letter-spacing: 0;
    white-space: pre;
    overflow-x: auto;
}

.ascii-art pre:focus-visible {
    outline: 1px dashed var(--foreground);
    outline-offset: 4px;
}

.home-intro > :first-child {
    margin-top: 0;
}

.home-intro > :last-child {
    margin-bottom: 0;
}

.home section {
    margin-bottom: 3rem;
}

.home h2 {
    font-size: 1rem;
}

.home img {
    width: 100%;
    filter: grayscale(100%);
}

.home img:hover {
    filter: grayscale(0%);
}

/* The footer QR stays in its original colors. */
.home .page-qr img {
    filter: none;
}

/* ---------------------------------------------------------
   JOURNAL / ARTICLE
   --------------------------------------------------------- */

article {
    width: 100%;
}

article header {
    margin-bottom: 2rem;
}

article time,
.meta,
.article-date {
    color: var(--sand);
    font-size: 0.75rem;
}

article img {
    display: block;
    width: 100%;
    max-width: 100%;
    height: auto;
    margin: 1rem 0;
}

/* ---------------------------------------------------------
   ARTICLE LIST
   --------------------------------------------------------- */

/* Compact previews shared by the homepage and collection pages. */
.post-card {
    margin-bottom: 4rem;
    font-weight: 400;
}

.post-card-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.25rem 1rem;
    margin-bottom: 0.65rem;
}

.post-card-title {
    min-width: 0;
    margin: 0;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
}

.post-card-date {
    flex-shrink: 0;
    margin-left: auto;
    color: var(--sand);
    font-size: 0.7rem;
    white-space: nowrap;
}

.post-card-image {
    display: block;
}

.post-card-image img {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    margin: 0;
}

.post-card-description {
    margin: 0;
    color: var(--muted);
    font-size: 0.8rem;
    line-height: 1.8;
}

.post-card-image + .post-card-description {
    margin-top: 0.75rem;
}

.home .post-card:focus-within .post-card-image img {
    filter: grayscale(0%);
}

.post-list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.post-list li {
    margin-bottom: 3.5rem;
}

.post-list-title {
    margin-bottom: 0.25rem;
    font-size: 1.05rem;
}

.post-list-date {
    float: right;
    color: var(--sand);
    font-size: 0.75rem;
}

.post-list img {
    display: block;
    width: 100%;
    height: auto;
    margin-top: 0.75rem;
    margin-bottom: 0.75rem;
}

.post-list-description {
    color: var(--muted);
}

/* ---------------------------------------------------------
   SUPPORT CALLOUT
   --------------------------------------------------------- */

.support-callout {
    margin: 3rem 0 2.75rem 0;
    padding: 0.9rem 1.1rem;

    border: 1px solid var(--accent);

    background: transparent;
    color: var(--foreground);

    font-size: 0.8rem;
    line-height: 1.55;
}

.support-callout a {
    font-weight: 600;
}

/* ---------------------------------------------------------
   POST META FOOTER
   --------------------------------------------------------- */

.post-meta-footer {
    color: var(--sand);
    margin: 0;
    padding: 2.75rem 0;

    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);

    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 500;
    line-height: 1.65;
}

.post-meta-footer p {
    margin: 0;
}

.post-meta-footer time {
    font-family: inherit;
    font-size: inherit;
    font-weight: inherit;
    line-height: inherit;

    color: inherit;

    white-space: nowrap;
}

.post-meta-footer a {
    font-family: inherit;
    font-weight: 600;
}

/* ---------------------------------------------------------
   POST HEADER
   --------------------------------------------------------- */

.post-header {
    margin-bottom: 1.5rem;
}

.post-title {
    margin-bottom: 0.75rem;
}

.post-description {
    margin: 0;

    font-size: 1.08rem;
    line-height: 1.6;

    color: var(--foreground);
}

.post-cover {
    display: block;

    width: 100%;
    height: auto;

    margin: 1.5rem 0 2rem 0;
}

.post-content {
    font-size: 1rem;
    line-height: 1.65;
}

/* ---------------------------------------------------------
   IMAGES
   --------------------------------------------------------- */

img {
    max-width: 100%;
    height: auto;
}

figure {
    margin: 2rem 0;
}

figcaption {
    margin-top: 0.5rem;
    color: var(--muted);
    font-size: 0.8rem;
}

.qr-code img {
    width: 160px;
    height: auto;
    filter: none;
}

h2 + .qr-code,
h3 + .qr-code {
    margin-top: 0.75rem;
}

/* ---------------------------------------------------------
   BLOCKQUOTE / NOTES

   Markdown example:
   > **Note:** Some information here.
   --------------------------------------------------------- */

blockquote {
    margin: 1.5rem 0;
    padding: 0.75rem 0.9rem;

    border: 1px solid var(--border);

    background: var(--surface);
    color: var(--foreground);

    font-style: normal;
}

blockquote p {
    margin: 0;
}

blockquote strong {
    font-weight: 700;
}

/* ---------------------------------------------------------
   CODE
   --------------------------------------------------------- */

code,
pre {
    font-family: var(--font-mono);
}

/* Inline code: `clinfo -l` */
:not(pre) > code {
    padding: 0.05rem 0.25rem;

    border: 2px solid var(--code-foreground);

    background: transparent;
    color: var(--code-foreground);

    font-size: 0.92em;
}

/* Fenced code / command blocks */
pre {
    overflow-x: auto;

    margin: 1.5rem 0 2.75rem;
    padding: 0.65rem;

    border-style: solid;
    border-color: var(--code-border);
    border-width: var(--code-border-width);

    background: var(--code-background);
    color: var(--code-foreground);

    font-size: 0.92rem;
    line-height: 1.35;
}

pre code {
    padding: 0;
    border: 0;
    background: transparent;
    color: inherit;
}

/* ---------------------------------------------------------
   HORIZONTAL RULE
   --------------------------------------------------------- */

hr {
    height: 0;
    margin: 3rem 0;
    border: 0;
    border-top: 1px solid var(--border);
}

/* ---------------------------------------------------------
   LISTS
   --------------------------------------------------------- */

ul,
ol {
    margin-top: 1rem;
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

li {
    margin-bottom: 0.25rem;
}

/* ---------------------------------------------------------
   TABLE
   --------------------------------------------------------- */

table {
    width: 100%;
    margin: 1.5rem 0;
    border-collapse: collapse;
    font-size: 0.9rem;
}

thead {
    text-align: left;
}

th {
    padding: 7px 9px;
    border-bottom: 1px solid var(--border);
    font-weight: 700;
    text-align: left;
    vertical-align: top;
}

td {
    padding: 9px;
    border: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
}

th:first-child,
td:first-child {
    padding-left: 9px;
}

/* ---------------------------------------------------------
   DETAILS / FAQ
   --------------------------------------------------------- */

details {
    margin-bottom: 1.5rem;
}

summary {
    cursor: pointer;
    font-weight: 700;
    text-decoration: underline;
    text-underline-offset: 3px;
}

details > *:not(summary) {
    margin-left: 1rem;
}

/* ---------------------------------------------------------
   LIBRARY
   --------------------------------------------------------- */

.library {
    width: 100%;
}

.library > h1 {
    margin-bottom: 3rem;
}

.library-list {
    display: block;
}

.book-card {
    display: block;
    width: 100%;
    margin: 0 0 38px 0;
    color: inherit;
    text-decoration: none;
}

.book {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 238px;
    width: 100%;
    min-height: 172px;
    margin: 0;
    background: transparent;
}

.book-info {
    padding: 28px 24px 24px 24px;
}

.book-title {
    margin: 0 0 17px 0;
    font-size: 1rem;
    font-weight: 700;
}

.book-description {
    margin: 0 0 15px 0;
    line-height: 1.55;
}

.book-author {
    margin: 0;
    font-weight: 600;
}

.book-cover {
    width: 238px;
    height: 172px;
    overflow: hidden;
    background: #eee;
}

.book-cover img {
    display: block;
    width: 100%;
    height: 100%;
    margin: 0;
    object-fit: contain;
    background: #eee;
}

.book-card:hover .book-title {
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
}

/* ---------------------------------------------------------
   BOOKMARKS
   --------------------------------------------------------- */

.bookmarks {
    margin: 0;
    padding: 0;
    list-style: none;
}

.bookmarks li {
    margin-bottom: 0.6rem;
}

/* ---------------------------------------------------------
   FOOTER
   --------------------------------------------------------- */

.site-footer {
    width: 100%;
    margin-top: 3rem;
    color: var(--foreground);
    font-size: 0.8rem;
}

.site-footer p {
    margin: 0;
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;

    padding: 0 0 2.5rem 0;

    border-bottom: 1px solid var(--border);
}

.footer-links {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.65rem;
}

.footer-links a {
    width: max-content;
    max-width: 100%;
    font-weight: 600;
}

.page-qr {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
}

.page-qr strong {
    font-weight: 600;
}

.page-qr img {
    display: block;
    width: 120px;
    height: 120px;
    margin: 0;
    filter: none;
    image-rendering: pixelated;
}

/* ---------------------------------------------------------
   SELECTION
   --------------------------------------------------------- */

::selection {
    background: var(--accent);
    color: var(--on-accent);
}

::-moz-selection {
    background: var(--accent);
    color: var(--on-accent);
}

/* ---------------------------------------------------------
   CURSOR EFFECT
   --------------------------------------------------------- */

.page-header h1::after,
.library > h1::after,
.collection > h1::after {
    content: "█";
    margin-left: 0.15em;
    animation: cursor-blink 1s steps(1) infinite;
}

@keyframes cursor-blink {
    0%,
    50% {
        opacity: 1;
    }

    51%,
    100% {
        opacity: 0;
    }
}

/* ---------------------------------------------------------
   RESPONSIVE LAYOUT
   --------------------------------------------------------- */


pre {
    max-width: 100%;
    overflow-wrap: normal;
}

table {
    display: block;
    max-width: 100%;
    overflow-x: auto;
}

@media (max-width: 720px) {
    body {
        padding: 24px 20px 48px;
        font-size: 15px;
    }

    .site-header {
        margin-bottom: 40px;
        padding-bottom: 24px;
    }

    .site-navigation {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        column-gap: 20px;
        row-gap: 8px;
    }

    h1 {
        font-size: 1.8rem;
    }

    h2 {
        font-size: 1.25rem;
    }

    .post-card-title {
        font-size: 1rem;
    }

    .book {
        grid-template-columns: minmax(0, 1fr) 105px;
        min-height: 120px;
    }

    .book-info {
        padding: 12px 12px 12px 0;
    }

    .book-title {
        margin-bottom: 10px;
    }

    .book-description,
    .book-author {
        font-size: 0.9rem;
    }

    .book-cover {
        width: 105px;
        height: 150px;
    }

    .footer-main {
        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
        gap: 1rem;
    }

    .page-qr img {
        width: 96px;
        height: 96px;
    }
}

@media (max-width: 380px) {
    body {
        padding-inline: 14px;
    }

    .book {
        grid-template-columns: minmax(0, 1fr);
    }

    .book-cover {
        grid-row: 1;
    }
}

#disablejs {
    position: fixed;
    inset: 0;
    width: 100%;
    max-width: none;
    height: 100vh;
    height: 100dvh;
    max-height: none;
    margin: 0;
    padding: clamp(1rem, 2.5vw, 2.5rem);
    overflow-y: auto;
    background: var(--background);
    background: color-mix(in srgb, var(--background) 94%, transparent);
    color: var(--foreground);
    border: 0;
    border-top: 3px solid var(--accent);
    font: inherit;
    overflow-wrap: anywhere;
    overscroll-behavior: contain;
}

#disablejs::backdrop {
    background: rgb(0 0 0 / 25%);
}

body:has(#disablejs[open]) {
    overflow: hidden;
}

.disablejs-hint {
    color: var(--sand);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 2rem;
}

.not-found {
    padding: 1rem 0 2.5rem;
    border-bottom: 1px solid var(--border);
}

.not-found-header {
    margin-bottom: 2.5rem;
}

.not-found h1 {
    margin: 0;
    font-size: clamp(1.4rem, 4vw, 2.2rem);
    font-weight: 400;
}

.not-found-cursor {
    color: var(--muted);
    animation: cursor-blink 1s steps(1) infinite;
}

.not-found-intro {
    margin-bottom: 3.5rem;
    font-size: 1.1rem;
}

.not-found > :last-child {
    margin-bottom: 0;
}

@media (prefers-reduced-motion: reduce) {
    .not-found-cursor,
    .page-header h1::after,
    .library > h1::after,
    .collection > h1::after {
        animation: none;
    }
}