/*
 * fishtea.dev — one stylesheet, no framework, no build step of its own.
 *
 * The palette is the framework's own (packages/ui/src/index.css): warm paper, one accent, a distinct
 * colour reserved for writes. Light and dark are both defined on tokens, and dark is the system default
 * rather than an afterthought.
 */
:root {
  --bg: oklch(0.985 0.004 80);
  --fg: oklch(0.22 0.01 60);
  --dim: oklch(0.5 0.01 60);
  --card: oklch(1 0 0);
  --muted: oklch(0.955 0.006 80);
  --border: oklch(0.9 0.008 80);
  --accent: oklch(0.58 0.15 45);
  --accent-soft: oklch(0.95 0.03 45);
  --write: oklch(0.52 0.18 25);
  --code-bg: oklch(0.22 0.012 60);
  --code-fg: oklch(0.93 0.008 80);
  --radius: 0.6rem;
  --measure: 34rem;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: oklch(0.16 0.008 60);
    --fg: oklch(0.93 0.006 80);
    --dim: oklch(0.68 0.01 60);
    --card: oklch(0.2 0.008 60);
    --muted: oklch(0.235 0.008 60);
    --border: oklch(0.3 0.01 60);
    --accent: oklch(0.76 0.14 50);
    --accent-soft: oklch(0.27 0.04 50);
    --write: oklch(0.72 0.16 25);
    --code-bg: oklch(0.13 0.008 60);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  overflow-x: hidden;              /* a stray wide child must never scroll the whole page */
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-synthesis-weight: none;
}
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 3px; }

.wrap { max-width: 68rem; margin: 0 auto; padding-inline: 1.5rem; }
@media (max-width: 30rem) { .wrap { padding-inline: 1rem; } }

/* ---- header ---------------------------------------------------------------------------------- */
header.top {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in oklab, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
/* min-height, not height: the nav used to wrap inside a fixed 3.5rem bar and spill over the content
   below it on narrow screens. It scrolls sideways now instead of wrapping. */
header.top .wrap { display: flex; align-items: center; gap: 1rem; min-height: 3.5rem; }
.brand { font-weight: 700; letter-spacing: -0.01em; color: var(--fg); text-decoration: none; font-size: 1.05rem; }
.brand span { color: var(--accent); }
header.top nav {
  margin-left: auto; display: flex; gap: 1.25rem;
  flex-wrap: nowrap;                  /* wrapping is what overlapped the page */
  overflow-x: auto; overscroll-behavior-x: contain;
  scrollbar-width: none; -ms-overflow-style: none;
}
header.top nav::-webkit-scrollbar { display: none; }
header.top nav a { color: var(--dim); text-decoration: none; font-size: 0.925rem; white-space: nowrap; }
header.top nav a:hover, header.top nav a[aria-current] { color: var(--fg); }
header.top nav a[aria-current] { font-weight: 600; }

/* ---- hero ------------------------------------------------------------------------------------ */
.hero { padding-block: 5rem 3.5rem; border-bottom: 1px solid var(--border); }
.hero h1 { font-size: clamp(2.25rem, 6vw, 3.75rem); line-height: 1.05; letter-spacing: -0.03em; margin: 0 0 1rem; }
.hero .tag { color: var(--accent); font-weight: 600; letter-spacing: 0.02em; text-transform: lowercase; margin: 0 0 0.75rem; }
.hero p.lede { font-size: 1.2rem; color: var(--dim); max-width: var(--measure); margin: 0 0 2rem; }
.cta { display: flex; gap: 0.75rem; flex-wrap: wrap; align-items: center; }
.btn {
  display: inline-block; padding: 0.6rem 1.1rem; border-radius: var(--radius);
  background: var(--accent); color: var(--bg); font-weight: 600; text-decoration: none; border: 1px solid transparent;
}
.btn:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; color: var(--fg); border-color: var(--border); }

/* ---- code ------------------------------------------------------------------------------------ */
pre {
  background: var(--code-bg); color: var(--code-fg);
  padding: 1rem 1.15rem; border-radius: var(--radius);
  overflow-x: auto; font-size: 0.875rem; line-height: 1.6;
  font-family: ui-monospace, "SF Mono", "Cascadia Code", Menlo, monospace;
}
pre code { background: none; padding: 0; color: inherit; font-size: inherit; }
code {
  background: var(--muted); padding: 0.12em 0.4em; border-radius: 4px;
  font-family: ui-monospace, "SF Mono", "Cascadia Code", Menlo, monospace; font-size: 0.875em;
}
.install {
  display: flex; align-items: center; gap: 0.75rem;
  background: var(--code-bg); color: var(--code-fg);
  padding: 0.7rem 1rem; border-radius: var(--radius);
  font-family: ui-monospace, Menlo, monospace; font-size: 0.875rem;
  overflow-x: auto;
}
.install .prompt { color: var(--accent); user-select: none; }

/* ---- sections -------------------------------------------------------------------------------- */
section { padding-block: 3.5rem; border-bottom: 1px solid var(--border); }
section > .wrap > h2 { font-size: 1.75rem; letter-spacing: -0.02em; margin: 0 0 0.5rem; }
section > .wrap > p.sub { color: var(--dim); max-width: var(--measure); margin: 0 0 2rem; }

.grid { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(min(16rem, 100%), 1fr)); }
.grid > * { min-width: 0; }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.25rem;
}
.card h3 { margin: 0 0 0.4rem; font-size: 1rem; letter-spacing: -0.01em; }
.card p { margin: 0; color: var(--dim); font-size: 0.925rem; }
.card code { font-size: 0.8em; }

.split { display: grid; gap: 2rem; grid-template-columns: 1fr; align-items: start; }
.split > * { min-width: 0; }
@media (min-width: 60rem) { .split { grid-template-columns: 1fr 1.1fr; } }

/* ---- tables ---------------------------------------------------------------------------------- */
.scroll { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 0.925rem; }
th, td { text-align: left; padding: 0.55rem 0.8rem; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-weight: 600; color: var(--dim); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.04em; }
tbody tr:hover { background: var(--muted); }

/* ---- docs layout ----------------------------------------------------------------------------- */
.docs { display: grid; gap: 1.5rem; grid-template-columns: 1fr; padding-block: 1.5rem 4rem; }
.side { font-size: 0.925rem; }

/* On a phone the sidebar is collapsed so an article starts at the top of the screen instead of below
   fifteen navigation links. The element ships `open` and a small script closes it on narrow viewports —
   CSS cannot do it, because a closed <details> lays its children out but never paints them. */
.side > summary {
  cursor: pointer; list-style: none;
  padding: 0.55rem 0.8rem; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--card); color: var(--fg); font-weight: 600; font-size: 0.9rem;
  display: flex; align-items: center; justify-content: space-between; gap: 0.5rem;
}
.side > summary::-webkit-details-marker { display: none; }
.side > summary::after { content: "▾"; color: var(--dim); transition: transform 120ms ease; }
.side[open] > summary::after { transform: rotate(180deg); }
.side > .side-inner { padding: 1rem 0.25rem 0; }

@media (min-width: 60rem) {
  .docs { grid-template-columns: 14rem 1fr; gap: 3rem; padding-block: 2.5rem 5rem; }
  .side { position: sticky; top: 5rem; align-self: start; max-height: calc(100vh - 7rem); overflow-y: auto; }
  .side > summary { display: none; }
  .side > .side-inner { display: block; padding: 0; }   /* a closed <details> hides these otherwise */
}
.side h4 { margin: 1.5rem 0 0.5rem; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--dim); }
.side h4:first-child { margin-top: 0; }
.side ul { list-style: none; margin: 0; padding: 0; }
.side li { margin: 0.15rem 0; }
.side a { display: block; padding: 0.2rem 0.5rem; margin-left: -0.5rem; border-radius: 4px; color: var(--dim); text-decoration: none; }
.side a:hover { background: var(--muted); color: var(--fg); }
.side a[aria-current] { background: var(--accent-soft); color: var(--fg); font-weight: 600; }

.prose { min-width: 0; max-width: 46rem; }
.prose pre, .prose table, .prose .scroll { max-width: 100%; }
.prose h1 { font-size: 2.1rem; letter-spacing: -0.025em; margin: 0 0 1rem; }
.prose h2 { font-size: 1.4rem; letter-spacing: -0.015em; margin: 2.5rem 0 0.75rem; padding-top: 0.5rem; border-top: 1px solid var(--border); }
.prose h3 { font-size: 1.1rem; margin: 1.75rem 0 0.5rem; }
.prose h4 { font-size: 0.95rem; margin: 1.5rem 0 0.4rem; color: var(--dim); }
.prose p, .prose li { max-width: var(--measure); }
.prose li { margin: 0.3rem 0; }
.prose blockquote {
  margin: 1.25rem 0; padding: 0.6rem 1rem; border-left: 3px solid var(--accent);
  background: var(--muted); border-radius: 0 var(--radius) var(--radius) 0; color: var(--dim);
}
.prose blockquote p { margin: 0; }
.prose table { margin: 1.25rem 0; }
.prose img { max-width: 100%; }
.prose hr { border: 0; border-top: 1px solid var(--border); margin: 2.5rem 0; }

/* Anchor links on headings, revealed on hover — quiet until wanted. */
.prose h2 a.anchor, .prose h3 a.anchor {
  opacity: 0; margin-left: 0.4rem; text-decoration: none; color: var(--dim); font-weight: 400;
}
.prose h2:hover a.anchor, .prose h3:hover a.anchor, a.anchor:focus-visible { opacity: 1; }

/* ---- spec reference -------------------------------------------------------------------------- */
.ref-section { border: 1px solid var(--border); border-radius: var(--radius); padding: 1.25rem; margin: 1rem 0; background: var(--card); }
.ref-section > h3 { margin-top: 0; font-family: ui-monospace, Menlo, monospace; }
.pill {
  display: inline-block; font-size: 0.7rem; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase;
  padding: 0.12rem 0.45rem; border-radius: 99px; background: var(--muted); color: var(--dim); vertical-align: middle;
}
.pill.req { background: var(--accent-soft); color: var(--accent); }

/* ---- footer ---------------------------------------------------------------------------------- */
footer.bottom { padding-block: 2.5rem 4rem; color: var(--dim); font-size: 0.9rem; }
footer.bottom .wrap { display: flex; gap: 1.5rem; flex-wrap: wrap; justify-content: space-between; }
footer.bottom a { color: var(--dim); }

.skip {
  position: absolute; left: -9999px;
}
.skip:focus { left: 1rem; top: 1rem; padding: 0.5rem 1rem; background: var(--accent); color: var(--bg); border-radius: var(--radius); z-index: 20; }

/* ---- blog ------------------------------------------------------------------------------------ */
.post-card {
  border-top: 1px solid var(--border);
  padding-block: 1.5rem;
}
.post-card:first-of-type { border-top: 0; padding-top: 0.5rem; }
.post-card h2 { border: 0; padding: 0; margin: 0 0 0.35rem; font-size: 1.3rem; letter-spacing: -0.015em; }
.post-card h2 a { color: var(--fg); text-decoration: none; }
.post-card h2 a:hover { color: var(--accent); }
.post-card p { margin: 0.35rem 0; }
.post-meta { color: var(--dim); font-size: 0.875rem; }
.post-meta .pill { margin-left: 0.15rem; }

/* ---- profile --------------------------------------------------------------------------------- */
.profile {
  display: flex; gap: 1.5rem; align-items: flex-start; flex-wrap: wrap;
  margin: 1.5rem 0 2rem;
  padding: 1.25rem;
  border: 1px solid var(--border); border-radius: var(--radius); background: var(--card);
}
.profile img {
  width: 160px; height: 160px; flex: none;
  border-radius: 50%; object-fit: cover;
  border: 2px solid var(--border);
}
.profile > div { flex: 1 1 18rem; min-width: 0; }
.profile p { margin: 0.4rem 0; }
@media (max-width: 30rem) {
  .profile { justify-content: center; text-align: center; }
  .profile img { width: 120px; height: 120px; }
}

/* ---- brand mark ------------------------------------------------------------------------------ */
/* gap would fall *between* "Fish" and "Tea" too — they are separate flex items — so the wordmark is
   wrapped and the spacing lives on the image instead. */
.brand { display: inline-flex; align-items: center; }
.brand img { display: block; height: 28px; width: auto; margin-right: 0.5rem; }
.brand .wordmark { white-space: nowrap; }
.hero-mark { display: block; height: 104px; width: auto; margin: 0 0 1.25rem -0.35rem; }
@media (max-width: 40rem) { .hero-mark { height: 76px; } }

/* ---- beta form ------------------------------------------------------------------------------- */
.beta-form { max-width: var(--measure); margin: 1.5rem 0 2rem; }
.beta-form .field { margin-bottom: 1rem; }
.beta-form label { display: block; font-size: 0.875rem; font-weight: 600; margin-bottom: 0.3rem; }
.beta-form input, .beta-form textarea {
  width: 100%; padding: 0.55rem 0.7rem;
  background: var(--card); color: var(--fg);
  border: 1px solid var(--border); border-radius: var(--radius);
  font: inherit; font-size: 0.95rem;
}
.beta-form textarea { resize: vertical; min-height: 6rem; }
.beta-form input:focus-visible, .beta-form textarea:focus-visible { border-color: var(--accent); }
.beta-form button { cursor: pointer; font: inherit; font-weight: 600; }
.beta-form .post-meta { margin: 0.5rem 0 0; }