/* ============================================================
   neal-notes — shared design system
   Tokens inherited from the Career Agent component library
   so notes and the eventual personal site stay visually one thing.
   ============================================================ */

:root {
  --bg: #0b0c0e;
  --bg-elev: #121316;
  --bg-elev-2: #16181c;
  --line: #23262d;
  --line-soft: #191b1f;
  --text: #ededea;
  --text-dim: #9b9ea6;
  --text-mute: #6a6e78;
  --accent: #38bdf8;
  --accent-ink: #06181f;
  --live: #5ad1c2;
  --warn: #f5a97f;
  --bad: #f38ba8;
  --violet: #7c6cff;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
  --disp: 'Space Grotesk', system-ui, sans-serif;
  --body: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  --maxw: 780px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  line-height: 1.68;
  font-size: 16.5px;
  -webkit-font-smoothing: antialiased;
}

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

/* ambient glow */
.glow, .glow2 {
  position: fixed; border-radius: 50%;
  z-index: 0; pointer-events: none;
}
.glow  { top: -140px; right: 6%; width: 520px; height: 520px;
         background: var(--accent); opacity: .09; filter: blur(130px); }
.glow2 { bottom: -180px; left: 2%; width: 460px; height: 460px;
         background: var(--violet); opacity: .07; filter: blur(140px); }

.shell {
  position: relative; z-index: 1;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 44px 26px 110px;
}
.shell.wide { max-width: 1000px; }

/* ---------- nav ---------- */
.nav {
  position: relative; z-index: 2;
  max-width: var(--maxw); margin: 0 auto;
  padding: 22px 26px 0;
  display: flex; align-items: center; justify-content: space-between;
  font-family: var(--mono); font-size: 12px;
}
.nav a { color: var(--text-mute); text-decoration: none; transition: color .2s; }
.nav a:hover { color: var(--accent); }
.nav .brand { color: var(--text); font-weight: 500; }
.nav .brand span { color: var(--accent); }

/* ---------- type ---------- */
.eyebrow {
  font-family: var(--mono); font-size: 11px; letter-spacing: 1.4px;
  text-transform: uppercase; color: var(--accent); margin-bottom: 14px;
}
h1 {
  font-family: var(--disp); font-weight: 700; font-size: 42px;
  letter-spacing: -1.1px; line-height: 1.12; margin: 0 0 18px;
}
h2 {
  font-family: var(--disp); font-weight: 600; font-size: 25px;
  letter-spacing: -.5px; margin: 62px 0 16px; scroll-margin-top: 24px;
}
h3 {
  font-family: var(--disp); font-weight: 600; font-size: 17.5px;
  letter-spacing: -.2px; margin: 34px 0 10px; color: var(--text);
}
p { margin: 0 0 18px; color: #d7d8d4; }
.lede { font-size: 19px; line-height: 1.6; color: var(--text-dim); margin-bottom: 26px; }
a { color: var(--accent); text-decoration: none; border-bottom: 1px solid rgba(56,189,248,.3); }
a:hover { border-bottom-color: var(--accent); }
strong { color: var(--text); font-weight: 600; }
em { color: var(--text); font-style: italic; }

code {
  font-family: var(--mono); font-size: .87em; color: var(--accent);
  background: var(--bg-elev); border: 1px solid var(--line-soft);
  border-radius: 5px; padding: 1.5px 6px;
}
pre {
  background: var(--bg-elev); border: 1px solid var(--line-soft);
  border-radius: 12px; padding: 18px 20px; overflow-x: auto;
  font-family: var(--mono); font-size: 13px; line-height: 1.62;
  color: var(--text-dim); margin: 22px 0;
}
pre code { background: none; border: none; padding: 0; color: inherit; font-size: inherit; }

ul, ol { margin: 0 0 20px; padding-left: 22px; color: #d7d8d4; }
li { margin-bottom: 9px; }
li::marker { color: var(--text-mute); }

blockquote {
  margin: 26px 0; padding: 4px 0 4px 22px;
  border-left: 2px solid var(--accent);
  color: var(--text-dim); font-style: italic;
}

hr { border: none; border-top: 1px solid var(--line-soft); margin: 54px 0; }

/* ---------- meta strip ---------- */
.meta {
  display: flex; flex-wrap: wrap; gap: 18px; align-items: center;
  font-family: var(--mono); font-size: 11.5px; color: var(--text-mute);
  padding-bottom: 26px; margin-bottom: 34px;
  border-bottom: 1px solid var(--line-soft);
}
.meta .dot { width: 5px; height: 5px; border-radius: 50%; background: var(--live);
             display: inline-block; margin-right: 7px; vertical-align: middle; }

/* ---------- callout ---------- */
.callout {
  background: var(--bg-elev); border: 1px solid var(--line-soft);
  border-left: 2px solid var(--accent);
  border-radius: 0 12px 12px 0; padding: 18px 22px; margin: 28px 0;
}
.callout p:last-child { margin-bottom: 0; }
.callout .tag {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 1px;
  text-transform: uppercase; color: var(--accent); display: block; margin-bottom: 8px;
}
.callout.warn { border-left-color: var(--warn); }
.callout.warn .tag { color: var(--warn); }

/* ---------- figure / interactive shell ---------- */
.fig {
  background: var(--bg-elev); border: 1px solid var(--line);
  border-radius: 16px; margin: 34px 0; overflow: hidden;
}
.fig-head {
  padding: 15px 20px; border-bottom: 1px solid var(--line-soft);
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  background: var(--bg-elev-2);
}
.fig-head .t { font-family: var(--disp); font-weight: 600; font-size: 14px; }
.fig-head .h { font-family: var(--mono); font-size: 10.5px; color: var(--text-mute);
               letter-spacing: .6px; text-transform: uppercase; }
.fig-body { padding: 22px 20px; }
.fig-cap {
  padding: 0 20px 18px; font-size: 13px; color: var(--text-mute); line-height: 1.55;
}

/* ---------- two-column compare ---------- */
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; margin: 28px 0; }
.col-card {
  background: var(--bg-elev); border: 1px solid var(--line-soft);
  border-radius: 14px; padding: 18px 20px;
}
.col-card h4 {
  font-family: var(--disp); font-size: 14px; margin: 0 0 12px;
  display: flex; align-items: center; gap: 8px;
}
.col-card.good h4 { color: var(--live); }
.col-card.bad  h4 { color: var(--bad); }
.col-card ul { margin: 0; padding-left: 18px; font-size: 14.5px; }
.col-card li { margin-bottom: 8px; color: var(--text-dim); }

/* ---------- toggles ---------- */
.toggle-list { display: flex; flex-direction: column; gap: 8px; }
.tgl {
  display: flex; align-items: flex-start; gap: 12px; cursor: pointer;
  background: var(--bg-elev-2); border: 1px solid var(--line-soft);
  border-radius: 10px; padding: 11px 14px; transition: border-color .18s, background .18s;
  user-select: none;
}
.tgl:hover { border-color: var(--line); }
.tgl.on { border-color: rgba(56,189,248,.45); background: rgba(56,189,248,.07); }
.tgl .box {
  width: 16px; height: 16px; border-radius: 5px; flex: 0 0 auto; margin-top: 3px;
  border: 1px solid var(--line); background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  transition: background .18s, border-color .18s;
}
.tgl.on .box { background: var(--accent); border-color: var(--accent); }
.tgl .box svg { opacity: 0; transition: opacity .18s; }
.tgl.on .box svg { opacity: 1; }
.tgl .lbl { font-size: 14px; line-height: 1.45; }
.tgl .lbl b { display: block; font-weight: 600; color: var(--text); }
.tgl .lbl i { font-style: normal; font-size: 12.5px; color: var(--text-mute); }
.tgl.noise.on { border-color: rgba(243,139,168,.45); background: rgba(243,139,168,.07); }
.tgl.noise.on .box { background: var(--bad); border-color: var(--bad); }

/* ---------- answer panel ---------- */
.answer {
  background: var(--bg); border: 1px solid var(--line-soft);
  border-radius: 12px; padding: 16px 18px; min-height: 150px;
}
.answer .q {
  font-family: var(--mono); font-size: 11px; color: var(--text-mute);
  letter-spacing: .5px; text-transform: uppercase; margin-bottom: 10px;
}
.answer .qtext {
  font-size: 14px; color: var(--text); padding-bottom: 14px; margin-bottom: 14px;
  border-bottom: 1px dashed var(--line);
}
.answer .atext { font-size: 14.5px; line-height: 1.62; color: var(--text-dim); }
.answer .atext .hl { color: var(--live); font-weight: 500; }
.answer .atext .err { color: var(--bad); font-weight: 500; }
.verdict {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .8px;
  text-transform: uppercase; padding: 5px 10px; border-radius: 999px;
  margin-bottom: 14px; border: 1px solid;
}
.verdict.v-generic { color: var(--text-mute); border-color: var(--line); }
.verdict.v-good    { color: var(--live); border-color: rgba(90,209,194,.4); background: rgba(90,209,194,.08); }
.verdict.v-wrong   { color: var(--bad); border-color: rgba(243,139,168,.4); background: rgba(243,139,168,.08); }

/* ---------- meters ---------- */
.meter-row { display: flex; align-items: center; gap: 12px; margin-top: 16px; }
.meter-row .name {
  font-family: var(--mono); font-size: 10.5px; color: var(--text-mute);
  width: 108px; flex: 0 0 auto; text-transform: uppercase; letter-spacing: .6px;
}
.meter { flex: 1; height: 6px; background: var(--bg-elev-2); border-radius: 999px; overflow: hidden; }
.meter i { display: block; height: 100%; width: 0%; border-radius: 999px;
           transition: width .45s cubic-bezier(.4,0,.2,1), background .45s; }
.meter-row .val { font-family: var(--mono); font-size: 11px; color: var(--text-dim);
                  width: 38px; text-align: right; flex: 0 0 auto; }

/* ---------- slider ---------- */
.slider-wrap { margin: 6px 0 18px; }
input[type=range] {
  -webkit-appearance: none; appearance: none; width: 100%; height: 4px;
  background: var(--line); border-radius: 999px; outline: none;
}
input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none; width: 16px; height: 16px;
  border-radius: 50%; background: var(--accent); cursor: pointer;
  border: 3px solid var(--bg); box-shadow: 0 0 0 1px var(--accent);
}
input[type=range]::-moz-range-thumb {
  width: 16px; height: 16px; border-radius: 50%; background: var(--accent);
  cursor: pointer; border: 3px solid var(--bg); box-shadow: 0 0 0 1px var(--accent);
}
.slider-labels {
  display: flex; justify-content: space-between; margin-top: 9px;
  font-family: var(--mono); font-size: 10.5px; color: var(--text-mute);
}

/* ---------- steps ---------- */
.steps { counter-reset: s; margin: 26px 0; }
.step {
  position: relative; padding-left: 46px; padding-bottom: 26px;
  border-left: 1px solid var(--line-soft); margin-left: 13px;
}
.step:last-child { border-left-color: transparent; padding-bottom: 0; }
.step::before {
  counter-increment: s; content: counter(s);
  position: absolute; left: -13px; top: -2px;
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--bg-elev); border: 1px solid var(--line);
  color: var(--accent); font-family: var(--mono); font-size: 11.5px;
  display: flex; align-items: center; justify-content: center;
}
.step h3 { margin: 1px 0 7px; }
.step p { margin-bottom: 0; font-size: 15px; }

/* ---------- note cards (index) ---------- */
.note-grid { display: flex; flex-direction: column; gap: 13px; margin-top: 30px; }
.note-card {
  display: block; background: var(--bg-elev); border: 1px solid var(--line-soft);
  border-radius: 15px; padding: 20px 22px; text-decoration: none; border-bottom-width: 1px;
  transition: border-color .2s, transform .2s;
}
.note-card:hover { border-color: rgba(56,189,248,.4); transform: translateY(-2px); }
.note-card .k {
  font-family: var(--mono); font-size: 10.5px; color: var(--accent);
  letter-spacing: .8px; text-transform: uppercase;
}
.note-card h3 { margin: 9px 0 7px; font-size: 19px; color: var(--text); }
.note-card p { margin: 0; font-size: 14.5px; color: var(--text-dim); }
.note-card.soon { opacity: .5; pointer-events: none; }
.note-card.soon .k { color: var(--text-mute); }

/* ---------- footer ---------- */
.foot {
  margin-top: 76px; padding-top: 28px; border-top: 1px solid var(--line-soft);
  font-size: 14px; color: var(--text-mute);
}
.foot .name { font-family: var(--disp); font-weight: 600; color: var(--text); font-size: 15px; }
.foot p { color: var(--text-mute); font-size: 14px; }

/* ---------- responsive ---------- */
@media (max-width: 680px) {
  h1 { font-size: 31px; }
  h2 { font-size: 21px; margin-top: 48px; }
  body { font-size: 16px; }
  .lede { font-size: 17px; }
  .cols { grid-template-columns: 1fr; }
  .shell { padding: 32px 20px 80px; }
  .nav { padding: 18px 20px 0; }
  .meter-row .name { width: 82px; font-size: 9.5px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
  html { scroll-behavior: auto; }
}