/* =========================================================
   PRE-FLIGHT OVERLAY — styling
   ========================================================= */
.preflight-overlay {
  position: fixed;
  bottom: 16px;
  left: 16px;
  z-index: 280;
  font-family: var(--font-sans);
}
.preflight-overlay .pf-toggle {
  background: rgba(20, 24, 31, 0.94);
  color: white;
  border: none;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  cursor: pointer;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}
.preflight-overlay .pf-toggle::before {
  content: "!";
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 600;
  color: white;
}
/* Warnings-only: discreet circular icon (label hidden). */
.preflight-overlay .pf-toggle-label { display: none; }

/* Errors present: promote to a wide, labelled, attention-grabbing pill. */
.preflight-overlay .pf-toggle.has-errors {
  width: auto;
  min-height: 44px;
  border-radius: 999px;
  padding: 0 18px 0 16px;
  gap: 10px;
  background: var(--c-red);
  box-shadow: 0 8px 24px rgba(200, 30, 30, 0.45);
  animation: pf-pulse 1.6s ease-in-out infinite;
}
.preflight-overlay .pf-toggle.has-errors::before { font-size: var(--fs-label-sm); }
.preflight-overlay .pf-toggle.has-errors .pf-toggle-label {
  display: inline;
  color: #fff;
  font-size: var(--fs-fine);
  font-weight: 700;
  white-space: nowrap;
  letter-spacing: 0.2px;
}
/* The labelled pill already carries the counts in text, so hide the
   redundant corner badges in error mode. */
.preflight-overlay .pf-toggle.has-errors .pf-err-badge,
.preflight-overlay .pf-toggle.has-errors .pf-warn-badge { display: none; }

@keyframes pf-pulse {
  0%, 100% { box-shadow: 0 8px 24px rgba(200, 30, 30, 0.45); }
  50%      { box-shadow: 0 8px 24px rgba(200, 30, 30, 0.45), 0 0 0 6px rgba(200, 30, 30, 0.28); }
}
@media (prefers-reduced-motion: reduce) {
  .preflight-overlay .pf-toggle.has-errors { animation: none; }
}
.preflight-overlay .pf-err-badge,
.preflight-overlay .pf-warn-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 20px;
  height: 20px;
  border-radius: 999px;
  font-size: var(--fs-fine-min);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 6px;
  font-family: var(--font-mono);
  border: 2px solid #14181F;
}
.preflight-overlay .pf-err-badge  { background: var(--c-red); color: white; }
.preflight-overlay .pf-warn-badge { background: var(--c-amber); color: var(--ink); top: -4px; right: 12px; }
.preflight-overlay .pf-err-badge + .pf-warn-badge { right: 14px; top: 18px; }

.preflight-overlay .pf-panel {
  position: absolute;
  bottom: 56px;
  left: 0;
  width: 420px;
  max-height: 60vh;
  background: rgba(20, 24, 31, 0.97);
  backdrop-filter: blur(12px);
  border-radius: 12px;
  display: none;
  flex-direction: column;
  box-shadow: 0 16px 48px rgba(0,0,0,0.4);
  color: #ECE7D8;
}
.preflight-overlay .pf-panel.is-open { display: flex; }

.preflight-overlay .pf-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.preflight-overlay .pf-title {
  font-family: var(--font-mono);
  font-size: var(--fs-fine-xs);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: 600;
}
.preflight-overlay .pf-close {
  background: transparent;
  border: none;
  color: #8B8675;
  font-size: var(--fs-label-sm);
  cursor: pointer;
  width: 24px;
  height: 24px;
  border-radius: 4px;
}
.preflight-overlay .pf-close:hover { background: rgba(255,255,255,0.08); color: white; }

.preflight-overlay .pf-body {
  flex: 1;
  overflow: auto;
  padding: 12px 18px;
}
.preflight-overlay .pf-section + .pf-section { margin-top: 14px; }
.preflight-overlay .pf-section-head {
  font-family: var(--font-mono);
  font-size: var(--fs-fine-min);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 8px;
  font-weight: 600;
}
.preflight-overlay .pf-sec-err  { color: var(--c-red); }
.preflight-overlay .pf-sec-warn { color: var(--c-amber); }

.preflight-overlay .pf-item {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 10px;
  padding: 6px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  font-size: var(--fs-fine-xs);
  line-height: 1.4;
}
.preflight-overlay .pf-slide {
  font-family: var(--font-mono);
  font-size: var(--fs-fine-min);
  color: #8B8675;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.preflight-overlay .pf-msg { color: #ECE7D8; }

.preflight-overlay .pf-foot {
  padding: 10px 18px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: var(--fs-fine-min);
  color: #6B7280;
  font-family: var(--font-mono);
}

/* Don't appear in print or presenter view */
@media print {
  .preflight-overlay { display: none !important; }
}
body.is-presenter .preflight-overlay { display: none !important; }
.deck.is-overview ~ .preflight-overlay { display: none; }