/* * Single shared stylesheet for the demo app shell. * Linked by the landing page and every example page so the whole showcase * shares one set of design tokens and component styles. */ /* Dark is the default (and the no-JS fallback). The theme toggle overrides it by setting `data-theme` on ; when unset, the OS preference wins. */ :root { --bg: #0b0d12; --card: #151922; --card-hover: #1c2230; --surface: #10141c; --border: #2a3140; --text: #e6e9ef; --muted: #97a0b0; --accent: #7c9cff; --tag: #263042; --radius: 12px; color-scheme: dark; } /* Light tokens, shared by the OS preference (no explicit choice) and the explicit `data-theme="light"` override. */ @media (prefers-color-scheme: light) { :root:not([data-theme]) { --bg: #f6f7f9; --card: #ffffff; --card-hover: #ffffff; --surface: #ffffff; --border: #e2e5ea; --text: #1a1d24; --muted: #5b6472; --accent: #3355dd; --tag: #eef1f7; color-scheme: light; } } :root[data-theme='light'] { --bg: #f6f7f9; --card: #ffffff; --card-hover: #ffffff; --surface: #ffffff; --border: #e2e5ea; --text: #1a1d24; --muted: #5b6472; --accent: #3355dd; --tag: #eef1f7; color-scheme: light; } * { box-sizing: border-box; } /* Full-bleed background on , centered content column on . */ html { background: var(--bg); color-scheme: light dark; } body { max-width: 960px; margin: 0 auto; padding: 1.5rem 1.25rem 4rem; color: var(--text); font: 16px/1.6 system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif; } /* ---------- shared app header (injected on example pages) ---------- */ app-header { display: flex; align-items: center; gap: 1rem; padding-bottom: 0.9rem; margin-bottom: 1.75rem; border-bottom: 1px solid var(--border); } app-header .brand { font-weight: 700; color: var(--accent); text-decoration: none; } app-header .crumb { color: var(--muted); } app-header .spacer { flex: 1; } app-header .back { color: var(--muted); text-decoration: none; font-size: 0.9rem; white-space: nowrap; } app-header .back:hover { color: var(--accent); } /* ---------- theme toggle (in the nav / landing header) ---------- */ .theme-toggle { display: inline-flex; align-items: center; justify-content: center; width: 2rem; height: 2rem; padding: 0; border: 1px solid var(--border); border-radius: 8px; background: var(--card); color: var(--muted); cursor: pointer; transition: color 0.15s, border-color 0.15s, background 0.15s; } .theme-toggle:hover { color: var(--accent); border-color: var(--accent); } .theme-toggle svg { display: block; } /* ---------- typography ---------- */ h1 { font-size: 1.6rem; line-height: 1.25; margin: 0 0 0.5rem; } h2 { font-size: 1.05rem; margin: 2rem 0 0.75rem; } p { margin: 0 0 1rem; max-width: 62ch; } .lede { color: var(--muted); } a { color: var(--accent); } code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.9em; padding: 0.1em 0.35em; border-radius: 5px; } hr { border: none; border-top: 1px solid var(--border); margin: 1.75rem 0; } /* ---------- interactive bits used across the examples ---------- */ button { font: inherit; color: var(--text); background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 0.45rem 0.85rem; cursor: pointer; transition: border-color 0.15s, background 0.15s; } button:hover { border-color: var(--accent); background: var(--card-hover); } input, textarea { font: inherit; color: var(--text); background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 0.4rem 0.55rem; } label { color: var(--muted); font-size: 0.9rem; margin-right: 0.4rem; } form { display: grid; gap: 0.5rem; max-width: 24rem; } dl { display: grid; grid-template-columns: auto 1fr; gap: 0.35rem 1rem; align-items: baseline; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem 1.15rem; max-width: 34rem; } dt { color: var(--muted); } dd { margin: 0; font-weight: 600; } ol.lifecycle-log { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 0.9rem 0.9rem 0.9rem 2.4rem; max-width: 34rem; } ol.lifecycle-log li { margin: 0.15rem 0; font-family: ui-monospace, monospace; font-size: 0.9rem; } /* Give custom-element hosts a bit of breathing room in the column. */ change-logger, attr-demo, lenient-counter, strict-counter, lifecycle-order, my-object, my-quote { display: block; margin: 0.75rem 0; } /* ---------- source preview (shown on every example page) ---------- */ .source { margin-top: 2.75rem; padding-top: 1.5rem; border-top: 1px solid var(--border); } .source-title { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin: 0 0 1rem; } details.source-file { /* `--code-bg` is set from Shiki's theme background once highlighting loads, so the whole block matches the code area (falls back to the card color). */ background: var(--code-bg, var(--card)); border: 1px solid var(--border); border-radius: var(--radius); margin: 0 0 0.75rem; overflow: hidden; } details.source-file > summary { cursor: pointer; padding: 0.6rem 0.9rem; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.85rem; color: var(--accent); user-select: none; } details.source-file[open] > summary { border-bottom: 1px solid var(--border); } /* Box styles shared by the plain fallback and Shiki's

.
   Both are transparent so the single block background (above) shows through —
   one uniform color across the filename bar and the code, with no seams. */
details.source-file pre {
  margin: 0;
  padding: 0.9rem 1rem;
  overflow-x: auto;
  font-size: 0.82rem;
  line-height: 1.55;
  tab-size: 2;
  background: transparent !important;
}
details.source-file pre.source-plain {
  color: var(--text);
}
details.source-file pre.source-plain code {
  background: none;
  padding: 0;
  border-radius: 0;
  font-size: inherit;
}
/* Shiki dual-theme: light token colors are inline; flip to the dark theme when
   the effective theme is dark. The source preview only renders with JS, which
   always sets a concrete `data-theme`, so key the flip off that attribute
   (background is handled by the block, not per span). */
:root[data-theme='dark'] details.source-file {
  background: var(--code-bg-dark, var(--card));
}
:root[data-theme='dark'] details.source-file .shiki span {
  color: var(--shiki-dark) !important;
}

/* ---------- landing page ---------- */
.home-header {
  position: relative;
}
.home-header .theme-toggle {
  position: absolute;
  top: 0;
  right: 0;
}
.home-header p {
  color: var(--muted);
  max-width: 46rem;
}
.home-header h1 {
  font-size: 2rem;
}
.home-header h1 code {
  font-size: 1.5rem;
  color: var(--accent);
  background: none;
  padding: 0;
}
.section-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 2.5rem 0 1rem;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 0.9rem;
}
a.card {
  display: block;
  padding: 1.1rem 1.15rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  transition:
    background 0.15s,
    border-color 0.15s,
    transform 0.15s;
}
a.card:hover {
  background: var(--card-hover);
  border-color: var(--accent);
  transform: translateY(-2px);
}
a.card .name {
  font-weight: 600;
  margin-bottom: 0.3rem;
}
a.card .desc {
  color: var(--muted);
  font-size: 0.9rem;
}
.tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--tag);
  border-radius: 999px;
  padding: 0.1rem 0.5rem;
  margin-left: 0.4rem;
  vertical-align: middle;
}
footer {
  margin-top: 3rem;
  color: var(--muted);
  font-size: 0.85rem;
}