/* Shared by every page except the terminal.
   Homepage: an ASCII London skyline that follows the season, with a short intro on top.
   Reading pages (writing, about, contact, posts): same colours, nav and type. */

:root {
  --bg: #15131a;
  --fg: #e4dff0;
  --dim: #8a849c;
  --link: #f5b8d6;
  --code: #f8e3a8;
  --rule: #2e2a36;
  --surface: #1c1a22;
  --mono: Menlo, Monaco, "DejaVu Sans Mono", "Lucida Console", "Courier New", monospace;
}
body.light {
  --bg: #f4f0e8;
  --fg: #2e2a36;
  --dim: #7d768a;
  --link: #b8577f;
  --code: #8a5a12;
  --rule: #ddd5e6;
  --surface: #ece6dc;
}

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

html, body { height: 100%; }

body.home {
  margin: 0;
  overflow: hidden;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

#sky {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  cursor: crosshair;
}

a { color: var(--fg); text-decoration: underline; text-decoration-color: var(--dim); text-underline-offset: 3px; }
a:hover { color: var(--link); text-decoration-color: var(--link); }
:focus-visible { outline: 1px dotted var(--link); outline-offset: 3px; }

/* nav: plain words, no icons */
.top {
  position: fixed;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  gap: 22px;
  align-items: baseline;
  font-size: 12px;
  white-space: nowrap;
}
.top a { color: var(--dim); text-decoration: none; }
.top a:hover { color: var(--fg); }
.top a[aria-current="page"] { color: var(--fg); font-weight: bold; }
#theme-toggle {
  font: inherit;
  color: var(--dim);
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}
#theme-toggle:hover { color: var(--fg); }
#theme-toggle svg { display: block; transform: translateY(2px); }
#theme-toggle .i-moon, body.light #theme-toggle .i-sun { display: none; }
body.light #theme-toggle .i-moon { display: block; }

.corner {
  position: fixed;
  top: 18px;
  right: 22px;
  z-index: 2;
  text-align: right;
  font-size: 11px;
  line-height: 1.5;
  color: var(--dim);
  pointer-events: none;
}

/* the intro sits over the sky, left of centre */
.intro {
  position: fixed;
  z-index: 2;
  left: max(24px, 18vw);
  top: 17vh;
  max-width: 540px;
  pointer-events: none;
  text-shadow: 0 0 6px var(--bg), 0 0 2px var(--bg);
}
.intro a, .intro button { pointer-events: auto; }
.intro p { margin: 0; }
.tagline { color: var(--dim); margin-bottom: 1.6em !important; min-height: 1.7em; }
.cursor {
  display: inline-block;
  width: .6em;
  height: 1.1em;
  margin-left: 2px;
  vertical-align: -.2em;
  background: var(--dim);
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
.links { margin-top: 1.4em !important; color: var(--dim); }

@media (prefers-reduced-motion: reduce) {
  .cursor { animation: none; }
}

@media (max-width: 640px) {
  body.home { font-size: 12px; }
  .top { gap: 14px; top: 14px; }
  .corner { display: none; }
  .intro { left: 20px; right: 20px; top: 13vh; }
}

/* ---------- reading pages ---------- */

body.reader {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
body.reader .top {
  position: static;
  transform: none;
  justify-content: center;
  padding: 18px 16px 0;
  flex-wrap: wrap;
}

.sheet {
  max-width: 680px;
  margin: 64px auto 48px;
  padding: 0 20px;
}

.sheet h1, .sheet h2, .sheet h3, .sheet h4 {
  font-size: 1em;
  line-height: 1.5;
  margin: 2.2em 0 .8em;
}
.sheet h1 { font-size: 1.15em; margin-top: 0; }
.sheet h2::before { content: "## "; color: var(--dim); }
.sheet h3::before { content: "### "; color: var(--dim); }
.sheet p, .sheet ul, .sheet ol, .sheet pre, .sheet blockquote, .sheet table, .sheet .highlight { margin: 0 0 1.2em; }
.sheet ul, .sheet ol { padding-left: 2ch; }
.sheet li { margin-bottom: .3em; }
.sheet img { display: block; max-width: 100%; height: auto; margin: 1.6em auto; border-radius: 2px; }
.sheet hr { border: 0; border-top: 1px dashed var(--rule); margin: 2.4em 0; }
.sheet strong { color: var(--fg); }
.sheet blockquote { margin-left: 0; padding-left: 2ch; border-left: 1px solid var(--dim); color: var(--dim); }
.sheet code { color: var(--code); font-family: inherit; font-size: .95em; }
.sheet pre {
  overflow-x: auto;
  padding: 1em 1.2em;
  background: var(--surface);
  border-radius: 2px;
  line-height: 1.55;
  font-size: .92em;
}
.sheet pre code { color: var(--fg); }
.sheet .highlight pre { margin: 0; }
.sheet table { border-collapse: collapse; width: 100%; font-size: .92em; }
.sheet th, .sheet td { border: 1px solid var(--rule); padding: .35em .7em; text-align: left; }
.sheet iframe, .sheet embed, .sheet .embed { display: block; width: 100%; max-width: 100%; border: 0; border-radius: 2px; background: #fff; }

.post-date { color: var(--dim); margin: 0 0 .3em !important; }
.back { max-width: 680px; margin: -16px auto 48px; padding: 0 20px; }

.post-list { list-style: none; padding: 0 !important; }
.post-list li { display: flex; gap: 2ch; margin: 0 0 .5em; }
.post-list time { flex: none; color: var(--dim); }

.message {
  padding: 1em 1.4em;
  border: 1px dashed var(--rule);
  border-radius: 2px;
  color: var(--fg);
}
.profile-photo {
  float: right;
  width: 140px;
  height: 140px;
  margin: .4em 0 1em 2em;
  border-radius: 50%;
  object-fit: cover;
}

.foot { text-align: center; color: var(--dim); padding: 0 16px 40px; font-size: 12px; }

@media (max-width: 640px) {
  body.reader { font-size: 13px; }
  .sheet { margin-top: 40px; }
  .post-list li { flex-direction: column; gap: 0; margin-bottom: .9em; }
  .profile-photo { float: none; display: block; margin: 0 auto 1.4em; }
}