/* Site feedback: the footer link, the side tab on wide screens, and the small form.
   Colours come from each page's own :root tokens (--accent, --paper, --ink and the rest, with
   their dark-mode versions), so light and dark mode follow the page. */

/* Footer link, on every page. A text button with a full 44px tap area. */
.fb-row{margin:0}
.fb-open{
  font:inherit;font-family:var(--mono);font-size:.8rem;font-weight:600;letter-spacing:.02em;
  color:var(--accent);background:none;border:0;padding:0 2px;min-height:44px;cursor:pointer;
  text-decoration:underline;text-underline-offset:.22em;text-decoration-thickness:1px;
}
.fb-open:hover{text-decoration-thickness:2px}

/* Side tab. Only where the page has room beside the text, so it never covers
   content on phones or tablets held upright. */
.fb-tab{display:none}
@media (min-width:900px){
  .fb-tab{
    display:block;position:fixed;right:0;bottom:88px;z-index:15;
    writing-mode:vertical-rl;transform:rotate(180deg);
    font-family:var(--mono);font-size:.74rem;font-weight:600;letter-spacing:.06em;
    color:var(--accent-ink);background:var(--accent);
    border:0;border-radius:0 4px 4px 0;padding:14px 12px;min-width:44px;min-height:44px;cursor:pointer;
    box-shadow:var(--win-shadow);
  }
  .fb-tab:hover{filter:brightness(1.08)}
  .fb-tab:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
}
@media print{.fb-tab,.fb-row{display:none!important}}

/* The dialog */
.fb-dialog{
  width:min(460px, calc(100vw - 32px));max-height:calc(100dvh - 32px);overflow:auto;
  margin:auto;padding:0;border:1.5px solid var(--rule-strong);border-radius:4px;
  background:var(--paper);color:var(--ink);box-shadow:var(--shadow);
}
.fb-trap{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);opacity:0}
.fb-dialog::backdrop{background:rgba(13,15,18,.55)}
.fb-in{padding:18px 20px 20px;display:grid;gap:14px}
.fb-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.fb-head h2{margin:0;font-family:var(--serif);font-weight:600;font-size:1.25rem;line-height:1.2}
.fb-x{
  flex:none;width:44px;height:44px;margin:-6px -10px -6px 0;display:inline-grid;place-items:center;
  background:none;border:0;border-radius:4px;color:var(--ink-2);cursor:pointer;font:inherit;
}
.fb-x:hover{background:var(--code-bg);color:var(--ink)}
.fb-x svg{width:18px;height:18px}
.fb-form{display:grid;gap:14px;margin:0}
.fb-field{display:flex;flex-direction:column;gap:6px;min-width:0}
.fb-field label{font-family:var(--serif);font-size:1rem;line-height:1.35;color:var(--ink)}
.fb-field .fb-opt{color:var(--ink-3)}
.fb-field input,.fb-field textarea{
  font:inherit;font-family:var(--serif);font-size:1rem;color:var(--ink);background:var(--field);
  border:1.5px solid var(--ink-3);border-radius:3px;padding:10px 12px;min-height:46px;width:100%;
}
.fb-field textarea{min-height:120px;resize:vertical;line-height:1.45}
.fb-field input:focus-visible,.fb-field textarea:focus-visible{outline:2px solid var(--accent);outline-offset:1px;border-color:var(--accent)}
.fb-field [aria-invalid="true"]{border-color:var(--crit)}
.fb-foot{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px}
.fb-send{
  display:inline-flex;align-items:center;justify-content:center;min-height:44px;min-width:96px;padding:10px 18px;
  font-family:var(--mono);font-weight:600;font-size:.86rem;
  color:var(--accent-ink);background:var(--accent);border:0;border-radius:3px;cursor:pointer;
}
.fb-send:hover{filter:brightness(1.08)}
.fb-send[aria-disabled="true"]{opacity:.7;cursor:progress}
.fb-note{margin:0;font-size:.88rem;line-height:1.45;color:var(--ink-2)}
.fb-status{margin:0;font-family:var(--mono);font-size:.8rem;line-height:1.5;color:var(--ink)}
/* Kept in the page (not display:none) so screen readers announce text added to it. */
.fb-status:empty{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.fb-status a{color:inherit}
.fb-status.is-err{color:var(--crit)}
.fb-done{display:grid;gap:14px;justify-items:start}
.fb-done p{margin:0;font-size:1.1rem}
.fb-done p:focus{outline:none}