/* Eric Zayler — research notebook. Typography-first, zero dependencies, dark-mode aware. */

:root {
  --bg:      #fbfbf9;
  --fg:      #1b1b19;
  --muted:   #6c6c64;
  --rule:    #e7e4dc;
  --accent:  #2b6cb0;        /* the blue from the bert-meaning-probe figure */
  --accent-soft: #e6eef7;
  --maxw:    44rem;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Charter, Georgia, Cambria, "Times New Roman", serif;
  --sans:  -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono:  ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:      #14161a;
    --fg:      #e7e7e2;
    --muted:   #9a9a90;
    --rule:    #2a2d33;
    --accent:  #82b1e8;
    --accent-soft: #1d2733;
  }
}

* { box-sizing: border-box; }

html { font-size: 18px; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--serif);
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 4.5rem 1.4rem 7rem; }

a { color: var(--accent); text-decoration: none; border-bottom: 1px solid var(--accent-soft); transition: border-color .15s ease; }
a:hover { border-bottom-color: var(--accent); }

h1, h2, h3 { font-weight: 600; line-height: 1.22; letter-spacing: -0.012em; }

/* ---- masthead ---- */
.name { font-size: 2.3rem; margin: 0 0 .35rem; }
.role { font-size: 1.06rem; color: var(--fg); margin: 0 0 .2rem; }
.intro { margin: 1.9rem 0 0; }
.intro p { margin: 0; }

/* ---- section labels ---- */
.label {
  font-family: var(--sans);
  font-size: .74rem;
  font-weight: 650;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 .9rem;
}
section { margin-top: 3.2rem; padding-top: 2.2rem; border-top: 1px solid var(--rule); }
section:first-of-type { border-top: none; padding-top: 0; }

/* ---- entry lists ---- */
.entries { list-style: none; margin: 0; padding: 0; }
.entries li { margin: 0 0 1.15rem; }
.entries li:last-child { margin-bottom: 0; }
.entries .title { font-size: 1.12rem; }
.entries .meta { display: block; color: var(--muted); font-size: .97rem; margin-top: .15rem; }
.tag { font-family: var(--mono); font-size: .72rem; color: var(--muted); border: 1px solid var(--rule); border-radius: 3px; padding: 0 .35rem; margin-left: .35rem; vertical-align: 1px; }

/* ---- figure ---- */
.figure { margin: 2rem 0 0; }
.figure img { width: 100%; height: auto; border: 1px solid var(--rule); border-radius: 6px; display: block; background: #fff; }
.figure figcaption { font-size: .9rem; color: var(--muted); margin-top: .6rem; line-height: 1.5; }

/* ---- prose (essays, log) ---- */
.prose { }
.prose .kicker { font-family: var(--sans); font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.prose h1 { font-size: 1.95rem; margin: .4rem 0 .3rem; }
.prose .dateline { color: var(--muted); font-size: .92rem; margin: 0 0 2rem; }
.prose p { margin: 0 0 1.25rem; }
.prose strong { font-weight: 600; }
.prose blockquote { margin: 1.5rem 0; padding-left: 1.1rem; border-left: 3px solid var(--accent-soft); color: var(--fg); font-style: italic; }
.prose hr { border: none; border-top: 1px solid var(--rule); margin: 2.4rem 0; }
.log-entry { margin: 0 0 2.6rem; padding-bottom: 2.6rem; border-bottom: 1px solid var(--rule); }
.log-entry:last-child { border-bottom: none; }
.log-entry h3 { font-size: 1.2rem; margin: 0 0 .15rem; }
.log-entry .dateline { color: var(--muted); font-size: .88rem; font-family: var(--mono); margin: 0 0 .9rem; }

/* ---- nav / back ---- */
.topnav { font-family: var(--sans); font-size: .9rem; margin-bottom: 2.4rem; }
.topnav a { border-bottom: none; color: var(--muted); }
.topnav a:hover { color: var(--accent); }

/* ---- footer ---- */
.foot { margin-top: 3.6rem; padding-top: 1.8rem; border-top: 1px solid var(--rule); font-family: var(--sans); }
.foot p { margin: 0 0 .4rem; font-size: .92rem; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }

@media (max-width: 480px) {
  html { font-size: 17px; }
  .wrap { padding: 3rem 1.15rem 5rem; }
  .name { font-size: 2rem; }
}