/* Shared styles for the fitgrid website: the landing page, the comparison
   page and the docs page generated by tool/docs/bin/build_docs.dart. */

:root {
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --fg: #0b1220;
  --muted: #526077;
  --line: #e4e8ef;
  --card: #ffffff;
  --card-hover: #f5f7fb;
  --accent: #2563eb;
  --accent-2: #7c3aed;
  --accent-soft: #e8efff;
  --accent-fg: #1d4ed8;
  --code-bg: #f6f8fb;
  --code-fg: #1e293b;
  --shadow: 0 1px 2px rgba(15, 23, 42, .04), 0 8px 24px rgba(15, 23, 42, .06);
  --shadow-lg: 0 2px 4px rgba(15, 23, 42, .04), 0 24px 64px rgba(15, 23, 42, .12);
  --glow: rgba(37, 99, 235, .18);
  --nav-bg: rgba(255, 255, 255, .72);
  --radius: 12px;
  --radius-lg: 18px;
  --tok-keyword: #7c3aed;
  --tok-string: #0a7d4f;
  --tok-number: #b45309;
  --tok-comment: #7b8799;
  --tok-title: #1d4ed8;
  --tok-type: #0e7490;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #070b14;
    --bg-soft: #0c121f;
    --fg: #e6ebf3;
    --muted: #97a3b6;
    --line: #1c2536;
    --card: #0e1524;
    --card-hover: #131c2e;
    --accent: #60a5fa;
    --accent-2: #a78bfa;
    --accent-soft: #14213d;
    --accent-fg: #93c5fd;
    --code-bg: #0b111d;
    --code-fg: #d7deea;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .35);
    --shadow-lg: 0 2px 4px rgba(0, 0, 0, .3), 0 24px 64px rgba(0, 0, 0, .5);
    --glow: rgba(96, 165, 250, .22);
    --nav-bg: rgba(7, 11, 20, .7);
    --tok-keyword: #c4a5ff;
    --tok-string: #7ee2b0;
    --tok-number: #fbbf77;
    --tok-comment: #6b778c;
    --tok-title: #8ec5ff;
    --tok-type: #67e8f9;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #070b14;
  --bg-soft: #0c121f;
  --fg: #e6ebf3;
  --muted: #97a3b6;
  --line: #1c2536;
  --card: #0e1524;
  --card-hover: #131c2e;
  --accent: #60a5fa;
  --accent-2: #a78bfa;
  --accent-soft: #14213d;
  --accent-fg: #93c5fd;
  --code-bg: #0b111d;
  --code-fg: #d7deea;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .35);
  --shadow-lg: 0 2px 4px rgba(0, 0, 0, .3), 0 24px 64px rgba(0, 0, 0, .5);
  --glow: rgba(96, 165, 250, .22);
  --nav-bg: rgba(7, 11, 20, .7);
  --tok-keyword: #c4a5ff;
  --tok-string: #7ee2b0;
  --tok-number: #fbbf77;
  --tok-comment: #6b778c;
  --tok-title: #8ec5ff;
  --tok-type: #67e8f9;
  color-scheme: dark;
}

/* ---------- Base ---------- */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 80px; }
body {
  margin: 0;
  font: 16px/1.65 var(--font);
  font-feature-settings: "cv11", "ss01";
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--accent-fg); }
img { max-width: 100%; height: auto; display: block; }
h1, h2, h3 { letter-spacing: -.022em; line-height: 1.15; }
h2 { font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.3rem); margin: 0 0 12px; }
h3 { font-size: 1.1rem; margin: 0 0 6px; letter-spacing: -.01em; }
p { margin: 0 0 16px; }
code, pre, kbd { font-family: var(--mono); }
code { font-size: .88em; }
:not(pre) > code {
  background: var(--code-bg);
  border: 1px solid var(--line);
  padding: .1em .36em;
  border-radius: 6px;
}
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
::selection { background: var(--accent-soft); }

.wrap { max-width: 1160px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 24px; } }
.prose { max-width: 760px; margin: 0 auto; }
.muted { color: var(--muted); }
.eyebrow {
  display: inline-block;
  font: 600 .78rem/1 var(--font);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.gradient-text {
  background: linear-gradient(100deg, var(--accent) 10%, var(--accent-2) 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

/* ---------- Nav ---------- */

.site-nav {
  position: sticky; top: 0; z-index: 20;
  background: var(--nav-bg);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s;
}
.site-nav.scrolled, .site-nav.always-line { border-bottom-color: var(--line); }
.site-nav .bar { display: flex; align-items: center; gap: 12px; height: 60px; }
.brand {
  display: inline-flex; align-items: center; gap: 9px;
  font-weight: 700; font-size: 1.05rem; letter-spacing: -.02em;
  color: var(--fg); text-decoration: none;
}
.brand:hover { color: var(--fg); }
.brand .logo {
  width: 26px; height: 26px; border-radius: 7px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: grid; place-items: center;
  box-shadow: 0 4px 14px var(--glow);
}
.brand .logo svg { width: 16px; height: 16px; }
.brand .sub { color: var(--muted); font-weight: 500; }
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  font: 500 .75rem/1 var(--mono);
  color: var(--muted);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  padding: 5px 9px; border-radius: 999px;
  text-decoration: none;
}
.nav-links { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.nav-links a {
  color: var(--muted); text-decoration: none; font-size: .93rem; font-weight: 500;
  padding: 7px 11px; border-radius: 8px;
}
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--fg); background: var(--bg-soft); }
.icon-btn {
  display: inline-grid; place-items: center;
  width: 36px; height: 36px; border-radius: 9px;
  border: 1px solid var(--line); background: var(--card); color: var(--muted);
  cursor: pointer; padding: 0; text-decoration: none;
}
.icon-btn:hover { color: var(--fg); background: var(--card-hover); }
.icon-btn svg { width: 18px; height: 18px; }
.nav-tools { display: flex; align-items: center; gap: 8px; margin-left: 8px; }
.theme-toggle .sun, .theme-toggle .moon { display: none; }
:root[data-theme="dark"] .theme-toggle .sun { display: block; }
:root:not([data-theme="dark"]) .theme-toggle .moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .theme-toggle .sun { display: block; }
  :root:not([data-theme]) .theme-toggle .moon { display: none; }
}
.nav-menu { display: none; }

@media (max-width: 820px) {
  .site-nav .nav-links {
    display: none;
    position: absolute; top: 60px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 2px;
    padding: 8px 16px 16px;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
  }
  .site-nav .nav-links a { padding: 10px 12px; font-size: 1rem; }
  .site-nav.open .nav-links { display: flex; }
  .nav-tools { margin-left: auto; }
  .nav-menu { display: inline-grid; }
  /* Without JavaScript the menu button does nothing, so keep the links. */
  .no-js .site-nav .nav-links { display: flex; position: static; flex-direction: row; flex-wrap: wrap; box-shadow: none; border: 0; padding: 0; background: none; }
  .no-js .nav-menu { display: none; }
  .no-js .site-nav .bar { height: auto; flex-wrap: wrap; padding: 10px 0; }
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 44px; padding: 0 20px; border-radius: 10px;
  font: 600 .95rem/1 var(--font); text-decoration: none; cursor: pointer;
  border: 1px solid transparent;
  transition: transform .15s, box-shadow .15s, background .15s, border-color .15s;
}
.btn svg { width: 16px; height: 16px; }
.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #2563eb, #6d4aea);
  box-shadow: 0 6px 20px var(--glow), inset 0 1px 0 rgba(255, 255, 255, .18);
}
.btn-primary:hover { color: #fff; transform: translateY(-1px); box-shadow: 0 10px 28px var(--glow), inset 0 1px 0 rgba(255, 255, 255, .18); }
.btn-secondary { color: var(--fg); background: var(--card); border-color: var(--line); }
.btn-secondary:hover { color: var(--fg); background: var(--card-hover); }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

/* ---------- Code ---------- */

.code {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--code-bg);
  overflow: hidden;
}
.code-head {
  display: flex; align-items: center; gap: 4px;
  padding: 6px 8px 0;
  border-bottom: 1px solid var(--line);
}
pre {
  position: relative;
  margin: 0;
  padding: 18px 20px;
  overflow-x: auto;
  font-size: .86rem; line-height: 1.6;
  color: var(--code-fg);
  background: var(--code-bg);
  border-radius: var(--radius);
  border: 1px solid var(--line);
}
.code pre { border: 0; border-radius: 0; }
pre code { font-size: inherit; background: none; border: 0; padding: 0; }
button.copy {
  position: absolute; top: 10px; right: 10px;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 10px;
  font: 500 .75rem/1 var(--font);
  color: var(--muted); background: var(--card);
  border: 1px solid var(--line); border-radius: 7px;
  cursor: pointer; opacity: 0; transition: opacity .15s;
}
pre:hover button.copy, button.copy:focus-visible, button.copy.done { opacity: 1; }
button.copy.done { color: var(--accent); }
@media (hover: none) { button.copy { opacity: 1; } }

.cmd {
  display: inline-flex; align-items: center; gap: 10px;
  height: 44px; padding: 0 8px 0 16px;
  font: 500 .88rem/1 var(--mono);
  color: var(--fg); background: var(--card);
  border: 1px solid var(--line); border-radius: 10px;
  max-width: 100%;
}
.cmd .prompt { color: var(--muted); user-select: none; }
.cmd code { background: none; border: 0; padding: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cmd button {
  display: inline-grid; place-items: center; width: 30px; height: 30px;
  border: 0; border-radius: 7px; background: transparent; color: var(--muted); cursor: pointer;
}
.cmd button:hover { background: var(--bg-soft); color: var(--fg); }
.cmd button svg { width: 15px; height: 15px; }
.cmd button.done { color: var(--accent); }

/* highlight.js tokens, on our own colours so they follow the theme. */
.hljs { color: var(--code-fg); background: none; }
.hljs-keyword, .hljs-built_in, .hljs-meta .hljs-keyword, .hljs-literal { color: var(--tok-keyword); }
.hljs-string, .hljs-regexp, .hljs-subst, .hljs-addition { color: var(--tok-string); }
.hljs-number, .hljs-symbol { color: var(--tok-number); }
.hljs-comment, .hljs-quote, .hljs-meta, .hljs-deletion { color: var(--tok-comment); font-style: italic; }
.hljs-title, .hljs-title.function_, .hljs-section, .hljs-attr, .hljs-attribute { color: var(--tok-title); }
.hljs-type, .hljs-title.class_, .hljs-class .hljs-title, .hljs-params { color: var(--tok-type); }
.hljs-variable, .hljs-template-variable, .hljs-property { color: var(--code-fg); }
.hljs-emphasis { font-style: italic; }
.hljs-strong { font-weight: 700; }

/* ---------- Tabs ---------- */

.tabs [role="tab"] {
  font: 500 .85rem/1 var(--font);
  padding: 10px 12px 11px;
  border: 0; background: none; color: var(--muted); cursor: pointer;
  border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.tabs [role="tab"][aria-selected="true"] { color: var(--fg); border-bottom-color: var(--accent); }
.tabs [role="tab"]:hover { color: var(--fg); }
.no-js .tabs [role="tablist"] { display: none; }
.no-js .tabs [role="tabpanel"][hidden] { display: block; }

/* ---------- Cards and tables ---------- */

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow);
}
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); }
table { border-collapse: collapse; width: 100%; font-size: .93rem; }
th, td { text-align: left; padding: 11px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-weight: 600; font-size: .82rem; letter-spacing: .02em; color: var(--muted); background: var(--bg-soft); }
tr:last-child td { border-bottom: 0; }
th.num, td.num { text-align: right; white-space: nowrap; }
td.num { font-variant-numeric: tabular-nums; font-family: var(--mono); font-size: .86rem; }

/* ---------- Footer ---------- */

.site-footer {
  margin-top: 96px;
  border-top: 1px solid var(--line);
  background: var(--bg-soft);
  color: var(--muted);
  font-size: .9rem;
}
.site-footer .cols {
  display: grid; gap: 32px;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  padding: 48px 0 32px;
}
.site-footer h4 { margin: 0 0 12px; font-size: .8rem; letter-spacing: .06em; text-transform: uppercase; color: var(--fg); }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--fg); }
.site-footer .legal { border-top: 1px solid var(--line); padding: 20px 0 32px; display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; }
@media (max-width: 720px) { .site-footer .cols { grid-template-columns: 1fr 1fr; } .site-footer .cols > :first-child { grid-column: 1 / -1; } }

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

/* A phone has room for the brand and a few buttons, not the version or GitHub
   (the footer links to both). */
@media (max-width: 480px) {
  .site-nav .pill, .site-nav .gh { display: none; }
  .site-nav .bar { gap: 8px; }
}