/* The notes hub. Dark unless the reader chooses light; the same tokens as the write-ups,
   so moving between them never changes the room. */
:root {
  --bg: #0d1117; --fg: #e6e9ef; --muted: #9aa4b2; --rule: #232a35; --card: #141a23; --card2: #18202b;
  --accent: #a5b4fc; --accent2: #4ade80; --accent3: #fbbf24; --accent4: #f9a8d4;
  color-scheme: dark;
}
:root[data-theme="light"] {
  --bg: #f7f8fa; --fg: #16191f; --muted: #586172; --rule: #dfe3ea; --card: #ffffff; --card2: #eef1f5;
  --accent: #4338ca; --accent2: #15803d; --accent3: #a16207; --accent4: #be185d;
  color-scheme: light;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.6 Inter, system-ui, sans-serif; }
main { max-width: 1080px; margin: 0 auto; padding: 40px 16px 96px; }
a { color: var(--accent); text-underline-offset: 2px; }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
h1 { font-size: clamp(32px, 6vw, 50px); line-height: 1.08; margin: 14px 0; letter-spacing: -0.02em; max-width: 22ch; }
h2 { font-size: 25px; margin: 56px 0 6px; letter-spacing: -0.01em; scroll-margin-top: 64px; }
h2 + .sub { color: var(--muted); margin: 0 0 18px; }
.kicker { font: 600 13px/1 "JetBrains Mono", monospace; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); }
.lede { font-size: 19px; color: var(--muted); margin: 0; max-width: 62ch; }
header.top { border-bottom: 1px solid var(--rule); padding-bottom: 28px; }

.topnav { position: sticky; top: 0; z-index: 5; background: var(--bg); border-bottom: 1px solid var(--rule); }
.topnav .in { max-width: 1080px; margin: 0 auto; padding: 10px 16px; display: flex; gap: 6px 18px; align-items: center; flex-wrap: wrap; font-size: 14.5px; }
.topnav .brand { font: 700 14px "JetBrains Mono", monospace; letter-spacing: .06em; text-transform: uppercase; color: var(--accent); margin-right: auto; text-decoration: none; }
.topnav a { color: var(--fg); text-decoration: none; padding: 4px 2px; border-bottom: 2px solid transparent; }
.topnav a[aria-current="page"], .topnav a:hover { border-bottom-color: var(--accent); }
.theme { font: 600 12px "JetBrains Mono", monospace; background: var(--card); color: var(--fg); border: 1px solid var(--rule); border-radius: 999px; padding: 6px 12px; cursor: pointer; }

/* cards */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); gap: 14px; }
.tile { position: relative; background: var(--card); border: 1px solid var(--rule); border-radius: 14px; padding: 16px 18px 14px; min-width: 0; display: flex; flex-direction: column; gap: 6px; }
.tile::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 4px; border-radius: 14px 0 0 14px; background: var(--tone, var(--accent)); }
.tile:nth-child(4n+2) { --tone: var(--accent2); } .tile:nth-child(4n+3) { --tone: var(--accent3); } .tile:nth-child(4n+4) { --tone: var(--accent4); }
.tile h3 { margin: 0; font-size: 19px; }
.tile h3 a { color: var(--fg); text-decoration: none; }
.tile h3 a::after { content: " \2192"; color: var(--tone, var(--accent)); }
.tile h3 a:hover { text-decoration: underline; }
.tile p { margin: 0; color: var(--muted); font-size: 15px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; padding-top: 8px; }
.chips a, .chip { font: 600 12px "JetBrains Mono", monospace; border: 1px solid var(--rule); border-radius: 999px; padding: 4px 10px; text-decoration: none; color: var(--fg); background: var(--card2); }
.chips a:hover { border-color: var(--accent); }

.big { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 18px; align-items: center; background: var(--card); border: 1px solid var(--rule); border-radius: 16px; padding: 22px; }
@media (max-width: 720px) { .big { grid-template-columns: minmax(0, 1fr); } }
.big h3 { margin: 0 0 6px; font-size: 22px; }
.big p { margin: 0 0 10px; color: var(--muted); }
.btn { display: inline-block; font-weight: 600; background: var(--accent); color: var(--bg); padding: 10px 16px; border-radius: 10px; text-decoration: none; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; }
.stat { background: var(--card2); border-radius: 12px; padding: 10px 14px; }
.stat b { display: block; font: 700 22px/1.2 "JetBrains Mono", monospace; color: var(--accent); }
.stat span { font-size: 13.5px; color: var(--muted); }

.fits { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr)); gap: 10px; }
.fits div { background: var(--card); border: 1px dashed var(--rule); border-radius: 12px; padding: 12px 14px; font-size: 15px; color: var(--muted); }
.fits b { display: block; color: var(--fg); }

/* the portfolio */
.dive { background: var(--card); border: 1px solid var(--rule); border-radius: 14px; padding: 18px 20px; margin: 14px 0; }
.dive .k { font: 600 12px "JetBrains Mono", monospace; letter-spacing: .06em; text-transform: uppercase; color: var(--accent2); }
.dive h3 { margin: 6px 0; font-size: 20px; }
.dive p { margin: 6px 0; }
.dive .why { color: var(--muted); }
.tools { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 8px 0 16px; }
.tools input { flex: 1 1 220px; min-width: 0; font: inherit; font-size: 15px; padding: 8px 12px; border-radius: 10px; border: 1px solid var(--rule); background: var(--card); color: var(--fg); }
.tools button { font: 600 12.5px "JetBrains Mono", monospace; border: 1px solid var(--rule); border-radius: 999px; padding: 6px 12px; background: var(--card); color: var(--fg); cursor: pointer; }
.tools button[aria-pressed="true"] { background: var(--accent); color: var(--bg); border-color: var(--accent); }
.proj h3 { font-size: 17px; }
.proj .what { color: var(--muted); font-size: 13.5px; margin-top: -2px; }
.proj ul { margin: 2px 0 0; padding-left: 18px; font-size: 14.5px; color: var(--fg); }
.proj li { margin: 2px 0; }
.meta { font: 12.5px/1.5 "JetBrains Mono", monospace; color: var(--muted); overflow-wrap: anywhere; }
.langbar { display: flex; height: 6px; border-radius: 3px; overflow: hidden; background: var(--card2); }
.langbar i { display: block; height: 100%; }
.langbar i:nth-child(1) { background: var(--accent); } .langbar i:nth-child(2) { background: var(--accent2); }
.langbar i:nth-child(3) { background: var(--accent3); } .langbar i:nth-child(4) { background: var(--accent4); }
.vh { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
[hidden] { display: none !important; }

footer { border-top: 1px solid var(--rule); margin-top: 64px; padding-top: 20px; font-size: 14.5px; color: var(--muted); }
.sites { display: flex; flex-wrap: wrap; gap: 6px 14px; margin: 14px 0 0; padding-top: 12px; border-top: 1px dashed var(--rule); font-size: 14px; }
.sites b { color: var(--muted); font-weight: 600; margin-right: 2px; }
.sites a[aria-current="true"] { color: var(--fg); text-decoration: none; font-weight: 600; }

/* The landing hero: three ways in, and the size of what is behind them. */
.hero { padding: 28px 20px 32px; background: radial-gradient(60% 120% at 0% 0%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 70%); border-radius: 18px; }
.hero h1 { font-size: clamp(36px, 7vw, 62px); }
.ctas { display: flex; flex-wrap: wrap; gap: 10px; margin: 22px 0 22px; }
.btn.ghost { background: transparent; color: var(--fg); border: 1px solid var(--rule); }
.btn.ghost:hover { border-color: var(--accent); }
.paths { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); gap: 12px; margin: 26px 0 0; }
.paths a { display: block; background: var(--card); border: 1px solid var(--rule); border-radius: 14px; padding: 14px 16px; text-decoration: none; color: var(--fg); min-width: 0; }
.paths a:hover { border-color: var(--accent); }
.paths b { display: block; font-size: 17px; }
.paths b::after { content: " \2192"; color: var(--accent); }
.paths span { display: block; color: var(--muted); font-size: 14.5px; margin-top: 2px; }