/* 404human: a text-only portfolio styled like a calm job log.
   Light by default. Dark when the system asks for it, unless the toggle picked light,
   or whenever the toggle picked dark. `color-scheme` also drives the code colours. */

:root {
  color-scheme: light;
  --bg: #fdfdfc;
  --text: #1f2328;
  --muted: #656d76;
  --line: #e5e7eb;
  --accent: #b7410e; /* rust */
  --ok: #1a7f37; /* running / release */
  --fail: #cf222e; /* failure */
  --code-bg: #f4f4f2;
  --max: 42rem;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", "JetBrains Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #141414;
    --text: #e6e6e6;
    --muted: #9a9a9a;
    --line: #2b2b2b;
    --accent: #f08a5d;
    --ok: #3fb950;
    --fail: #f85149;
    --code-bg: #1d1d1d;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #141414;
  --text: #e6e6e6;
  --muted: #9a9a9a;
  --line: #2b2b2b;
  --accent: #f08a5d;
  --ok: #3fb950;
  --fail: #f85149;
  --code-bg: #1d1d1d;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 1.125rem;
  line-height: 1.7;
}

::selection {
  background: color-mix(in srgb, var(--accent) 25%, transparent);
}

.site-header,
main,
.site-footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1rem;
}

/* A thin rust line across the top. On posts it fills up as you read. */
.top-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent);
  z-index: 10;
}

.post .top-bar {
  background: var(--line);
}

.post .top-bar::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--accent);
  transform-origin: 0 50%;
}

@supports (animation-timeline: scroll()) {
  .post .top-bar::after {
    animation: read-progress linear both;
    animation-timeline: scroll(root);
  }
}

@keyframes read-progress {
  from {
    transform: scaleX(0);
  }
  to {
    transform: scaleX(1);
  }
}

/* Header */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 2rem;
  padding-bottom: 3rem;
}

.site-title {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 1rem;
  text-transform: lowercase;
  color: var(--text);
  text-decoration: none;
}

.site-title::before {
  content: "~/";
  color: var(--accent);
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: 1.1rem;
}

.site-header nav a {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
}

/* Light/dark toggle: shows the moon in light mode and the sun in dark mode. */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.theme-toggle[hidden] {
  display: none; /* stays hidden if JavaScript is off */
}

.theme-toggle:hover {
  color: var(--text);
  border-color: var(--muted);
}

.theme-toggle:focus-visible,
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.theme-toggle svg {
  width: 1rem;
  height: 1rem;
}

.theme-toggle .icon-sun,
:root[data-theme="dark"] .theme-toggle .icon-moon {
  display: none;
}

:root[data-theme="dark"] .theme-toggle .icon-sun {
  display: block;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-sun {
    display: block;
  }

  :root:not([data-theme="light"]) .theme-toggle .icon-moon {
    display: none;
  }
}

/* Text */
a {
  color: var(--accent);
  text-underline-offset: 0.15em;
}

h1,
h2,
h3 {
  line-height: 1.25;
  letter-spacing: -0.01em;
}

h1 {
  font-size: 2.1rem;
  margin: 0 0 0.75rem;
}

h2 {
  font-size: 1.45rem;
  margin: 2.5rem 0 0.75rem;
}

h3 {
  font-size: 1.2rem;
  margin: 2rem 0 0.5rem;
}

p,
ul,
ol {
  margin: 0 0 1.25rem;
}

li + li {
  margin-top: 0.35rem;
}

strong {
  font-weight: 650;
}

blockquote {
  margin: 0 0 1.25rem;
  padding-left: 1rem;
  border-left: 3px solid var(--line);
  color: var(--muted);
}

hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 2.5rem 0;
}

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

.meta,
.subtitle {
  color: var(--muted);
}

.meta {
  font-family: var(--mono);
  font-size: 0.82rem;
  margin: 0;
}

/* Tags: post kinds and project statuses */
.tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  /* Tags are all capitals, so the space a line keeps for descenders (g, p, y) would sit
     empty under the letters. Fallback: a little extra padding on top to even it out. */
  line-height: 1.38;
  padding: 0.19em 0.4rem 0;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--muted);
  vertical-align: middle; /* centred on the text beside it */
  white-space: nowrap;
}

/* Where supported (Chrome, Safari), trim the box to exactly the capitals' height,
   so equal padding gives equal space above and below. */
@supports (text-box: trim-both cap alphabetic) {
  .tag {
    line-height: 1;
    padding: 0.42em 0.4rem;
    text-box: trim-both cap alphabetic;
  }
}

.kind-experiment {
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
}

.kind-failure {
  color: var(--fail);
  border-color: color-mix(in srgb, var(--fail) 45%, transparent);
}

.kind-release {
  color: var(--ok);
  border-color: color-mix(in srgb, var(--ok) 45%, transparent);
}

/* Home page */
.hero h1 {
  font-size: 2.6rem;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
}

/* A terminal cursor after the name. */
.hero h1::after {
  content: "";
  display: inline-block;
  width: 0.5ch;
  height: 0.85em;
  margin-left: 0.15em;
  vertical-align: -0.05em;
  background: var(--accent);
  animation: blink 1.1s steps(1) infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

.hero p {
  font-size: 1.3rem;
  line-height: 1.55;
  max-width: 34rem;
  margin: 0;
}

/* Section labels with a hairline: NOW ────── */
.home h2 {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin: 3.5rem 0 0.5rem;
}

.home h2::after {
  content: "";
  flex: 1;
  border-top: 1px solid var(--line);
}

/* Log rows: a narrow mono column (status, year or date), then the entry. */
.log {
  list-style: none;
  padding: 0;
  margin: 0;
}

.log .entry {
  display: grid;
  grid-template-columns: 6.5rem 1fr;
  gap: 1rem;
  align-items: baseline; /* the left label sits on the same line as the title's first line */
  padding: 0.8rem 0;
  margin: 0;
}

.log .when {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--muted);
  white-space: nowrap;
}

/* A post's kind sits under its date, so the title starts cleanly and wraps neatly. */
.log .when .tag {
  display: block;
  width: fit-content;
  margin-top: 0.45rem;
}

.log .what p {
  margin: 0;
}

.log .title {
  font-weight: 650;
  color: var(--text);
  text-decoration: none;
}

/* Linked titles turn rust and get an underline on hover; nothing shifts. */
.log a.title {
  text-decoration: underline;
  text-decoration-color: transparent;
  text-decoration-thickness: 2px;
  text-underline-offset: 0.2em;
  transition: color 0.15s ease, text-decoration-color 0.15s ease;
}

.log a.title:hover,
.log a.title:focus-visible {
  color: var(--accent);
  text-decoration-color: var(--accent);
}

.log .summary {
  color: var(--muted);
  font-size: 1rem;
  margin-top: 0.2rem;
}

/* "running" with a pulsing dot (inline, so "running" keeps its text baseline) */
.log .when.status-running {
  color: var(--ok);
}

.dot {
  display: inline-block;
  width: 0.5rem;
  height: 0.5rem;
  vertical-align: middle;
  border-radius: 50%;
  background: var(--ok);
  animation: pulse 2s ease-out infinite;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 color-mix(in srgb, var(--ok) 55%, transparent);
  }
  70%,
  100% {
    box-shadow: 0 0 0 0.45rem transparent;
  }
}

/* Post page */
.post-header {
  margin-bottom: 2.5rem;
}

.post-header .meta {
  margin-bottom: 0.75rem;
}

.post-header .subtitle {
  font-size: 1.2rem;
  font-style: italic;
  margin: 0;
}

.back {
  margin-top: 3rem;
  font-family: var(--mono);
  font-size: 0.9rem;
}

/* Build logs: a project written up checkpoint by checkpoint. */

/* Home: the latest entries sit under the log's own row, tighter and lighter. */
.log .log-step {
  padding: 0.3rem 0;
}

.log .log-step .title {
  font-weight: 500;
}

.log .more {
  font-family: var(--mono);
  font-size: 0.85rem;
}

/* "At a glance" under an entry's subtitle: label | value rows, like the home page log. */
.glance {
  margin: 1.5rem 0 0;
  padding: 0.6rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.glance div {
  display: grid;
  grid-template-columns: 6.5rem 1fr;
  gap: 1rem;
  align-items: baseline; /* the mono label sits on the value's first line */
  padding: 0.3rem 0;
}

.glance dt {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.glance dd {
  margin: 0;
  font-size: 1rem;
  line-height: 1.55;
}

/* An entry's place in its log, on the line above the date. */
.post-header .series-line {
  margin-bottom: 0.35rem;
}

/* A build log's page: entries grouped under milestones. */
.milestone h2 {
  display: flex;
  align-items: baseline; /* the mono id and the name share one text baseline */
  gap: 0.6rem;
}

.milestone-id {
  font-family: var(--mono);
  font-size: 0.8em;
  font-weight: 600;
  color: var(--accent);
}

.milestone-about {
  color: var(--muted);
  margin-bottom: 0.25rem;
}

.milestone.is-upcoming h2,
.milestone.is-upcoming .milestone-id {
  color: var(--muted);
}

/* Previous / next entry, under a build-log entry. */
.series-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 3rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.series-nav a {
  display: block;
  color: var(--text);
  text-decoration: none;
}

.series-dir {
  display: block;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 0.2rem;
}

.series-title {
  font-weight: 650;
  line-height: 1.4;
  transition: color 0.15s ease;
}

.series-nav a:hover .series-title,
.series-nav a:focus-visible .series-title {
  color: var(--accent);
}

/* "Next" stays on the right even when there is no "previous". */
.series-next {
  grid-column: 2;
  text-align: right;
}

.series-nav + .back {
  margin-top: 2rem;
}

/* Code */
code {
  font-family: var(--mono);
  font-size: 0.88em;
}

:not(pre) > code {
  background: var(--code-bg);
  padding: 0.12em 0.35em;
  border-radius: 4px;
}

pre {
  background: var(--code-bg) !important; /* one background in both modes, whatever the theme sets */
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1rem 1.1rem;
  margin: 0 0 1.5rem;
  overflow-x: auto; /* long lines scroll instead of breaking the layout on phones */
  line-height: 1.55;
  font-size: 0.95rem;
}

pre code {
  font-size: inherit;
}

/* Required by Zola's code highlighter (Giallo). */
.giallo-l {
  display: inline-block;
  min-height: 1lh;
  width: 100%;
  vertical-align: top; /* keeps blank lines in code the same height as other lines */
}

.giallo-ln {
  display: inline-block;
  user-select: none;
  margin-right: 0.4em;
  padding: 0.4em;
  min-width: 3ch;
  text-align: right;
  opacity: 0.8;
}

/* Footer */
.site-footer {
  margin-top: 4.5rem;
  padding-top: 1.5rem;
  padding-bottom: 3rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.78rem;
}

.site-footer a {
  color: var(--muted);
}

.nowrap {
  white-space: nowrap;
}

/* Phones */
@media (max-width: 480px) {
  body {
    font-size: 1.0625rem;
  }

  h1 {
    font-size: 1.75rem;
  }

  .hero h1 {
    font-size: 2.1rem;
  }

  .hero p {
    font-size: 1.15rem;
  }

  .site-header {
    padding-top: 1.25rem;
    padding-bottom: 2rem;
  }

  .log .entry {
    grid-template-columns: 1fr;
    gap: 0.15rem;
  }

  /* On phones the label goes above the entry, with date and kind side by side. */
  .log .when {
    display: flex;
    align-items: center;
    gap: 0.6rem;
  }

  .log .when .tag {
    margin-top: 0;
  }

  /* The glance card stacks its labels above the values, like the log rows. */
  .glance div {
    grid-template-columns: 1fr;
    gap: 0.1rem;
  }

  /* Previous and next stack, both left-aligned. */
  .series-nav {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .series-next {
    grid-column: auto;
    text-align: left;
  }
}

/* No blinking or pulsing for readers who turn motion off. */
@media (prefers-reduced-motion: reduce) {
  .hero h1::after,
  .dot {
    animation: none;
  }

  .log a.title,
  .series-title {
    transition: none;
  }
}