/* ==========================================================================
   base.css — reset, typography, buttons and helpers.
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--desk);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { color: var(--accent-text); text-decoration: none; }
a:hover { color: var(--fg-strong); }
button, input { font: inherit; color: inherit; }
h1, h2, h3, p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

:focus-visible { outline: 2px solid var(--accent-text); outline-offset: 2px; border-radius: 6px; }
[hidden] { display: none !important; }

.mono { font-family: var(--font-mono); }

.ico { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }
.ico--fill { fill: currentColor; stroke: none; }

.sr-only {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: 16px; top: -60px; z-index: 100;
  background: var(--accent); color: var(--on-accent);
  padding: 10px 14px; border-radius: var(--radius-sm); font-weight: 600;
}
.skip-link:focus { top: 16px; color: var(--on-accent); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 44px; padding: 0 18px;
  border-radius: var(--radius-sm); border: 1px solid var(--line-strong);
  background: transparent; color: var(--fg-strong);
  font-family: var(--font-sans); font-size: 15px; font-weight: 600;
  cursor: pointer; white-space: nowrap;
  transition: transform .2s var(--ease), filter .2s, background-color .2s, border-color .2s;
}
.btn:hover { transform: translateY(-2px); color: var(--fg-strong); border-color: var(--accent-text); }
.btn--accent { background: var(--accent); border-color: transparent; color: var(--on-accent); }
.btn--accent:hover { color: var(--on-accent); filter: brightness(1.1); border-color: transparent; }
.btn--sm { min-height: 30px; padding: 0 12px; font-size: 12px; border-radius: 6px; }
.btn.is-done { background: var(--tk-ok); color: #FFFFFF; border-color: transparent; }

.icon-btn {
  width: 32px; height: 32px; display: inline-grid; place-items: center;
  border: 1px solid var(--line); border-radius: 8px; background: transparent;
  color: var(--muted); cursor: pointer; transition: background-color .15s, color .15s;
}
.icon-btn:hover { background: var(--hover); color: var(--fg-strong); }
.icon-btn .ico { width: 17px; height: 17px; }

/* theme switch: brief colour fade (only while switching, so normal hovers stay snappy) */
.theme-anim, .theme-anim * { transition: background-color .35s ease, border-color .35s ease, color .35s ease !important; }

/* syntax tokens */
.tk-kw { color: var(--tk-kw); }
.tk-str { color: var(--tk-str); }
.tk-prop { color: var(--tk-prop); }
.tk-num { color: var(--tk-num); }
.tk-com { color: var(--tk-com); }
.t-ok { color: var(--tk-ok); }
.t-path { color: var(--tk-prop); }
.t-err { color: #F87171; }

.hl { font-style: normal; color: var(--accent-text); }