/* The Study District: feedback button and form (every page). Uses each page's own theme colours. */
.sdfb-btn, .sdfb-modal {
  --sdfb-paper: var(--paper, #FBF7EF); --sdfb-ink: var(--ink, #2C2520); --sdfb-muted: var(--muted, #6E6258);
  --sdfb-line: var(--line, #D7C8B6); --sdfb-wash: var(--wash, #EFE4D2); --sdfb-bg: var(--bg, #F3EBDD);
  --sdfb-accent: var(--crimson, var(--accent, #7A1830)); --sdfb-on: var(--on-accent, #FBF7EF); --sdfb-gold: var(--mid, var(--gold, #A8874E));
  --sdfb-bad: #A4262C; --sdfb-bad: light-dark(#A4262C, #FF8F87);
  font-size: 16px; font-size-adjust: none; line-height: 1.45; letter-spacing: normal; text-transform: none; text-shadow: none; font-weight: 400;
}
.sdfb-btn {
  position: fixed; z-index: 40; left: calc(14px + env(safe-area-inset-left, 0px)); bottom: calc(14px + env(safe-area-inset-bottom, 0px));
  display: inline-flex; align-items: center; gap: 6px; margin: 0; padding: 5px 11px 5px 9px;
  font-family: inherit; font-size: 13.5px; color: var(--sdfb-muted); background: var(--sdfb-paper);
  border: 1px solid var(--sdfb-line); border-radius: 999px; cursor: pointer; opacity: .82;
  box-shadow: 0 2px 8px rgba(0, 0, 0, .08); transition: opacity .15s, color .15s, border-color .15s; -webkit-tap-highlight-color: transparent;
}
.sdfb-btn svg { width: 16px; height: 16px; flex: none; }
.sdfb-btn:hover, .sdfb-btn:focus-visible { opacity: 1; color: var(--sdfb-accent); border-color: var(--sdfb-accent); }
.sdfb-btn:focus-visible { outline: 2px solid var(--sdfb-accent); outline-offset: 2px; }
/* Out of the way while the assistant is open or a side drawer is showing, and never printed. */
body:has(#sda.sda-open) .sdfb-btn { display: none; }
@media print { .sdfb-btn, .sdfb-modal { display: none !important; } }
@media (max-width: 640px) { .sdfb-btn { left: calc(10px + env(safe-area-inset-left, 0px)); bottom: calc(12px + env(safe-area-inset-bottom, 0px)); padding: 4px 9px 4px 7px; font-size: 12.5px; } .sdfb-btn svg { width: 14px; height: 14px; } }

html.sdfb-lock, html.sdfb-lock body { overflow: hidden; }
.sdfb-modal { position: fixed; inset: 0; z-index: 2147483000; background: rgba(0, 0, 0, .5); display: flex; align-items: center; justify-content: center; padding: 16px; overflow-y: auto; }
.sdfb-modal *, .sdfb-modal *::before, .sdfb-modal *::after { box-sizing: border-box; }
.sdfb-box {
  background: var(--sdfb-paper); color: var(--sdfb-ink); border: 1px solid var(--sdfb-line); border-radius: 10px;
  width: 100%; max-width: 460px; margin: auto; padding: 18px 20px 16px; box-shadow: 0 20px 50px rgba(0, 0, 0, .35); font-family: inherit; text-align: left;
}
.sdfb-box h2 { margin: 0 0 4px; font-family: inherit; font-size: 1.3rem; line-height: 1.25; font-weight: 600; color: var(--sdfb-accent); font-size-adjust: none; text-transform: none; letter-spacing: normal; text-shadow: none; }
.sdfb-box p { margin: 0; }
.sdfb-lede { color: var(--sdfb-muted); font-size: .95rem; margin-bottom: 12px !important; }
.sdfb-box fieldset { border: 0; margin: 0 0 10px; padding: 0; min-width: 0; }
.sdfb-box legend, .sdfb-label { display: block; padding: 0; margin: 0 0 6px; font-size: .9rem; font-weight: 600; color: var(--sdfb-ink); }
.sdfb-cats { display: flex; flex-wrap: wrap; gap: 6px; }
.sdfb-chip { position: relative; display: inline-flex; margin: 0; cursor: pointer; }
.sdfb-chip input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.sdfb-chip span { display: inline-block; padding: 5px 11px; font-size: .9rem; border: 1px solid var(--sdfb-line); border-radius: 999px; background: var(--sdfb-bg); color: var(--sdfb-ink); }
.sdfb-chip input:checked + span { background: var(--sdfb-accent); border-color: var(--sdfb-accent); color: var(--sdfb-on); }
.sdfb-chip input:focus-visible + span { outline: 2px solid var(--sdfb-gold); outline-offset: 2px; }
.sdfb-box textarea {
  display: block; width: 100%; min-height: 110px; resize: vertical; margin: 0; padding: 9px 11px; font: inherit; font-size: 1rem; line-height: 1.4;
  color: var(--sdfb-ink); background: var(--sdfb-bg); border: 1px solid var(--sdfb-line); border-radius: 6px;
}
.sdfb-box textarea:focus-visible { outline: 2px solid var(--sdfb-accent); outline-offset: 1px; }
.sdfb-box textarea::placeholder { color: var(--sdfb-muted); opacity: .85; }
.sdfb-meta { display: flex; justify-content: space-between; align-items: flex-start; gap: 10px; margin: 6px 0 8px; font-size: .85rem; }
.sdfb-warn { color: var(--sdfb-ink); font-weight: 600; }
.sdfb-count { color: var(--sdfb-muted); white-space: nowrap; font-variant-numeric: tabular-nums; }
.sdfb-page { font-size: .82rem; color: var(--sdfb-muted); overflow-wrap: anywhere; }
.sdfb-page + .sdfb-page { margin-top: 2px !important; }
.sdfb-msg { margin-top: 10px !important; padding: 8px 10px; border-radius: 6px; font-size: .92rem; background: var(--sdfb-wash); border-left: 3px solid var(--sdfb-gold); }
.sdfb-msg.bad { border-left-color: var(--sdfb-bad); }
.sdfb-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 14px; }
.sdfb-actions button { font: inherit; font-size: .98rem; margin: 0; padding: 7px 16px; border-radius: 6px; cursor: pointer; box-shadow: none; text-transform: none; letter-spacing: normal; }
.sdfb-send { background: var(--sdfb-accent); color: var(--sdfb-on); border: 1px solid var(--sdfb-accent); }
.sdfb-send:hover { filter: brightness(1.08); }
.sdfb-send[disabled] { opacity: .65; cursor: wait; }
.sdfb-cancel { background: transparent; color: var(--sdfb-accent); border: 1px solid var(--sdfb-line); }
.sdfb-cancel:hover { background: var(--sdfb-wash); }
.sdfb-actions button:focus-visible { outline: 2px solid var(--sdfb-gold); outline-offset: 2px; }