/* Observer notes - authored, static stylesheet (spec 003). No @import, no url() to any
   external origin (the CSP allows only this same-origin file). System fonts only. */
:root {
  --bg: #fbfbfa; --fg: #1d1d1f; --muted: #6b6b70; --rule: #e3e3e0;
  --link: #2f6fb0; --code-bg: #f0f0ee; --code-fg: #383; --quote: #8a5a00;
  --accent: #2f6fb0; --chip-bg: #ececea;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17181a; --fg: #e7e7ea; --muted: #9a9aa2; --rule: #2c2d31;
    --link: #74b1ea; --code-bg: #22242a; --code-fg: #9ccf9c; --quote: #e0b24d;
    --accent: #74b1ea; --chip-bg: #24262c;
  }
}

html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font-family: var(--sans); font-size: 17px; line-height: 1.65;
  overflow-wrap: break-word; word-break: break-word;
}
main { max-width: 46rem; margin: 0 auto; padding: 1.5rem 1.15rem 4rem; }

h1 { font-size: 1.6rem; line-height: 1.25; margin: 0 0 .25rem; }
h2 { font-size: 1.15rem; color: var(--muted); font-weight: 600; margin: 1.6rem 0 .6rem; }
/* dated note headers (## -> h3) read as section titles */
h3 {
  font-size: 1.05rem; margin: 2rem 0 .5rem; padding-bottom: .25rem;
  border-bottom: 1px solid var(--rule);
}
h4 { font-size: .98rem; color: var(--muted); margin: 1.3rem 0 .4rem; }

p { margin: .7rem 0; }
hr { border: 0; border-top: 1px solid var(--rule); margin: 1.6rem 0; }

a { color: var(--link); text-decoration: underline; text-underline-offset: 2px; }

strong { font-weight: 650; }

/* inline code chip and code blocks */
code {
  font-family: var(--mono); font-size: .9em;
  background: var(--code-bg); color: var(--code-fg);
  padding: .08em .35em; border-radius: 4px;
}
pre {
  background: var(--code-bg); border: 1px solid var(--rule); border-radius: 8px;
  padding: .8rem 1rem; margin: .9rem 0; overflow-x: auto;   /* wide code scrolls in its box */
}
pre code { background: none; color: inherit; padding: 0; white-space: pre; }

blockquote {
  margin: .9rem 0; padding: .2rem 0 .2rem 1rem;
  border-left: 3px solid var(--rule); color: var(--muted);
}
ul, ol { padding-left: 1.4rem; }
li { margin: .25rem 0; }

/* highlighted quoted phrases */
.q { color: var(--quote); }

/* tag chips */
.tags { color: var(--muted); font-size: .9rem; margin: .25rem 0 1.2rem; }
.tag {
  display: inline-block; background: var(--chip-bg); color: var(--muted);
  border-radius: 999px; padding: .05rem .55rem; margin: .12rem .15rem .12rem 0;
  font-size: .82rem;
}

/* index list */
ul.index { list-style: none; padding-left: 0; }
ul.index li { margin: .35rem 0; }
ul.index a { font-variant-numeric: tabular-nums; }

/* layout: single column by default; nav + content side by side on wide viewports */
.layout { display: grid; grid-template-columns: 1fr; }
main { max-width: 46rem; margin: 0 auto; padding: 1.5rem 1.15rem 4rem; }

/* entry navigation (spec 003 B11) */
nav.entries { padding: 1rem 1.15rem 0; font-size: .9rem; }
nav.entries .allentries {
  display: inline-block; margin-bottom: .5rem; font-weight: 600;
  text-decoration: none; color: var(--accent);
}
nav.entries .allentries::before { content: "\2190  "; }   /* back arrow */
nav.entries summary { cursor: pointer; color: var(--muted); font-weight: 600; }
nav.entries ul { list-style: none; padding-left: 0; margin: .5rem 0 0; }
nav.entries li { margin: .2rem 0; }
nav.entries a { text-decoration: none; }
nav.entries li.current {
  font-weight: 650; color: var(--fg);
  border-left: 3px solid var(--accent); padding-left: .5rem; margin-left: -.5rem;
}

@media (min-width: 60rem) {
  .layout {
    grid-template-columns: 15rem minmax(0, 46rem);
    justify-content: center; gap: 2.5rem; align-items: start;
  }
  /* Only the day-page main (inside .layout) drops its margin/padding so the grid controls
     spacing. The index main is not in .layout, so it keeps margin:0 auto + padding and
     stays centered instead of flush-left. */
  .layout > main { margin: 0; padding: 1.5rem 0 4rem; }
  nav.entries {
    position: sticky; top: 0; max-height: 100vh; overflow-y: auto;
    padding: 1.5rem 0 2rem; border-right: 1px solid var(--rule);
  }
  nav.entries { padding-right: 1.5rem; }
}

/* conversation entries (spec 002) */
.notice {
  background: var(--chip-bg); color: var(--muted); border: 1px solid var(--rule);
  border-radius: 6px; padding: .5rem .8rem; font-size: .9rem; margin: .5rem 0 1.2rem;
}
.conversation .entry { margin: 1.1rem 0; }
.entry .who { display: block; font-size: .8rem; color: var(--muted); font-weight: 600; margin-bottom: .25rem; }
.entry.msg .body > :first-child { margin-top: 0; }
.entry.action { border-left: 3px solid var(--rule); padding-left: .8rem; }
.entry.action .cmd { background: var(--code-bg); margin: 0 0 .4rem; }
.entry.action .cmd::before { content: "$ "; color: var(--muted); }
.entry.action .out { background: var(--code-bg); margin: 0; color: var(--muted); }
.entry.synthetic .placeholder { color: var(--muted); font-style: italic; }