/* Puffin site — solarized-light, matching the playground's aesthetic. */

:root {
  --paper: #fdf6e3;      /* solarized base3 */
  --paper-2: #f3ecd8;    /* code / panels */
  --line: #e5dcc3;
  --ink: #073642;        /* base02 */
  --body: #45555c;       /* between base01 and base00 */
  --muted: #93a1a1;
  --blue: #268bd2;
  --orange: #cb4b16;
  --red: #dc322f;
  --green: #859900;
  --yellow: #b58900;
  --violet: #6c71c4;
  --cyan: #2aa198;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #002b36;
    --paper-2: #073642;
    --line: #0e3a46;
    --ink: #eee8d5;
    --body: #a7b3b3;
    --muted: #586e75;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--body);
  font: 16px/1.65 ui-sans-serif, system-ui, "Segoe UI", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

code, pre, kbd {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ------------------------------------------------------------------ topbar */

.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; flex-wrap: wrap;
  padding: 0.6rem 1.2rem;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex; align-items: center; gap: 0.5rem;
  color: var(--ink); font-weight: 700; font-size: 1.05rem;
}
.brand:hover { text-decoration: none; }
.brand .logo { font-size: 1.5rem; line-height: 1; }

.topbar nav { display: flex; gap: 1.1rem; flex-wrap: wrap; }
.topbar nav a { color: var(--body); font-size: 0.95rem; }
.topbar nav a.active { color: var(--orange); font-weight: 600; }
.topbar nav a.gh { color: var(--muted); }

/* -------------------------------------------------------------------- hero */

.hero {
  max-width: 46rem; margin: 0 auto; padding: 3.5rem 1.2rem 1rem;
  text-align: center;
}
.hero-logo { display: block; margin: 0 auto 0.5rem; font-size: 16rem; line-height: 1; }
.hero h1 {
  margin: 0.4rem 0 0.6rem; color: var(--ink);
  font-size: 3rem; letter-spacing: -0.02em;
}
.tagline {
  margin: 0 auto 1.6rem; max-width: 34rem;
  font-size: 1.15rem; color: var(--body);
}
.cta { display: flex; gap: 0.7rem; justify-content: center; flex-wrap: wrap; }
.button {
  display: inline-block; padding: 0.5rem 1.1rem; border-radius: 8px;
  background: var(--blue); color: var(--paper); font-weight: 600;
  border: 1px solid var(--blue);
}
.button:hover { text-decoration: none; filter: brightness(1.07); }
.button.ghost { background: transparent; color: var(--blue); }
.button.primary {
  background: var(--green); border-color: var(--green);
  font-size: 1.08rem; padding: 0.62rem 1.4rem; box-shadow: 0 1px 6px rgba(133,153,0,0.35);
}

/* ------------------------------------------------------------------- prose */

.prose {
  max-width: 46rem; margin: 0 auto; padding: 1.5rem 1.2rem 4rem;
}

.prose h1, .prose h2, .prose h3, .prose h4 {
  color: var(--ink); letter-spacing: -0.01em; line-height: 1.25;
  margin: 2.2em 0 0.6em;
}
.prose h1 { font-size: 1.9rem; margin-top: 1.2em; }
.prose h2 {
  font-size: 1.45rem; padding-bottom: 0.25em;
  border-bottom: 1px solid var(--line);
}
.prose h3 { font-size: 1.15rem; }
.prose a.anchor { color: inherit; }
.prose a.anchor:hover { text-decoration: none; }
.prose a.anchor:hover::after { content: " #"; color: var(--muted); }

.prose li { margin: 0.3em 0; }
.prose blockquote {
  margin: 1em 0; padding: 0.2em 1em; color: var(--muted);
  border-left: 3px solid var(--line);
}
.prose hr { border: none; border-top: 1px solid var(--line); margin: 2.5em 0; }
.prose img { max-width: 100%; }
.prose strong { color: var(--ink); }

.prose table {
  border-collapse: collapse; width: 100%; margin: 1em 0;
  display: block; overflow-x: auto; font-size: 0.92rem;
}
.prose th, .prose td {
  border: 1px solid var(--line); padding: 0.4em 0.7em; text-align: left;
}
.prose th { color: var(--ink); background: var(--paper-2); }

.prose code {
  background: var(--paper-2); border-radius: 4px;
  padding: 0.1em 0.35em; font-size: 0.88em; color: var(--ink);
}

pre.code {
  background: var(--paper-2); border: 1px solid var(--line);
  border-radius: 10px; padding: 0.9rem 1.1rem;
  overflow-x: auto; line-height: 1.55; font-size: 0.86rem;
}
pre.code code { background: none; padding: 0; color: var(--ink); font-size: 1em; }

/* highlight classes: c comment, s string, n number, k keyword, t type/ctor,
   q quoted symbol, h hash-literal & type punctuation, p paren */
pre.code .c { color: var(--muted); font-style: italic; }
pre.code .s { color: var(--cyan); }
pre.code .n { color: var(--violet); }
pre.code .k { color: var(--green); font-weight: 600; }
pre.code .t { color: var(--yellow); }
pre.code .q { color: var(--orange); }
pre.code .h { color: var(--red); }
pre.code .p { color: var(--muted); }

/* ---------------------------------------------------------------- docstrip */

.docstrip {
  max-width: 46rem; margin: 1.4rem auto 0; padding: 0 1.2rem;
  font-size: 0.88rem; color: var(--muted);
  display: flex; gap: 0.35rem 0.8rem; flex-wrap: wrap;
}
.docstrip a { color: var(--body); }
.docstrip a.here { color: var(--orange); font-weight: 600; }

/* ------------------------------------------------------------------ footer */

.footer {
  border-top: 1px solid var(--line);
  padding: 1.2rem; text-align: center;
  color: var(--muted); font-size: 0.88rem;
}
.footer a { color: var(--muted); }

@media (max-width: 640px) {
  .hero { padding-top: 2.2rem; }
  .hero h1 { font-size: 2.3rem; }
}