/* =====================================================================
   codegraph ui — the app's global primitives

   The design tokens themselves live in `lib/theme.css`, which is also
   what `@colbymchenry/codegraph-ui` exports for a host to import and
   override. This file is everything ON TOP of them that only the
   standalone viewer needs: the reset, the shell grid, and the handful of
   primitives shared across views.

   Component-specific rules live in each .svelte file's scoped <style>.
   ===================================================================== */

@import './lib/theme.css';

/* ---------- reset ---------- */
html,
body {
  height: 100%;
}

body {
  margin: 0;
  /* body always paints --paper: the bars are transparent over it and a
     short view must not reveal the browser's own canvas colour. */
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 13px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  /* Square corners are non-negotiable in this system, including on the
     UA-styled controls (input, select, button) we do not restyle. */
  border-radius: 0 !important;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

h1,
h2,
h3 {
  font-weight: 600;
  text-wrap: balance;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

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

/* ---------- app shell ----------
   Design spec §3.1: top bar 48px / trail bar 34px / main. The grid is on
   index.html's mount host, which App.svelte fills directly (no wrapper — a
   second #app would duplicate the id).

   The trail row is `auto`, not `--trailbar-h`: the bar keeps that height on
   its own (see TrailBar.svelte) and grows only while the save-trail form is
   open. Pinning the row instead would clip the form. */
#app {
  height: 100vh;
  display: grid;
  grid-template-rows: var(--topbar-h) auto 1fr;
}

/* ---------- cross-view primitives ---------- */
.mono {
  font-family: var(--mono);
}

.dim {
  color: var(--ink-3);
}

.tnum {
  font-variant-numeric: tabular-nums;
}

/* Empty / not-yet-loaded states. Sentence case, no exclamation marks —
   say what is missing and what to do about it. */
.emptystate {
  padding: 40px;
  max-width: 60ch;
  color: var(--ink-2);
  line-height: 1.5;
}

.emptystate h2 {
  margin: 0 0 8px;
  font-size: 16px;
  color: var(--ink);
}

.emptystate p {
  margin: 0 0 10px;
}

.emptystate code {
  font-family: var(--mono);
  font-size: 12px;
  background: var(--press);
  padding: 1px 4px;
}