/* Spotlight tour (lib/tour.js). Linked by welcome/welcome.html and
   sidepanel/sidepanel.html; tokens only, from lib/theme.css. */

:root {
  /* The scrim is painted by the cutout's box-shadow, so it's a colour, not an
     overlay element. Deep indigo rather than black — it reads as the palette
     dimming rather than a hole punched in the page. */
  --fla-tour-scrim: rgba(4, 22, 39, 0.62);
  --fla-tour-ring: rgba(255, 255, 255, 0.9);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --fla-tour-scrim: rgba(0, 0, 0, 0.72);
    --fla-tour-ring: rgba(198, 213, 232, 0.85);
  }
}

:root[data-theme="dark"] {
  --fla-tour-scrim: rgba(0, 0, 0, 0.72);
  --fla-tour-ring: rgba(198, 213, 232, 0.85);
}

/* Above the side panel's .modal (z-index 10) and anything else we draw. */
.fla-tour {
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
}

/* Transparent, and only here to swallow clicks on the dimmed area. Hidden for
   steps marked `interactive`, where the point is to let the user click through. */
.fla-tour__blocker {
  position: fixed;
  inset: 0;
  pointer-events: auto;
  background: transparent;
}

.fla-tour__blocker[hidden] {
  display: none;
}

/* The cutout. Its box-shadow spread is what dims everything outside it, so the
   spotlit element keeps its true colours with no overlay on top of it. */
.fla-tour__spot {
  position: fixed;
  border-radius: var(--fla-r);
  box-shadow: 0 0 0 9999px var(--fla-tour-scrim);
  outline: 2px solid var(--fla-tour-ring);
  outline-offset: 0;
  pointer-events: none;
  transition: left 0.18s ease, top 0.18s ease, width 0.18s ease, height 0.18s ease;
}

.fla-tour__spot[hidden] {
  display: none;
}

/* A centred step has nothing to point at, so the scrim needs painting by
   something — the ROOT's ::before covers the viewport instead.
   It must hang off the root, not off the callout. `.fla-tour__callout` is
   `position: fixed` with `z-index: 1`, so it forms a stacking context, and a
   `z-index: -1` child of a stacking context does NOT paint behind its
   parent's background — the parent's background paints first, then negative
   children on top of it. Painting the scrim there tinted the callout's own
   background with 62% of the scrim colour, so every centred step rendered
   visibly darker than every anchored one. Here it's a sibling behind the
   callout (which keeps `z-index: 1`), so it dims the page and nothing else. */
.fla-tour--centred::before {
  content: "";
  position: fixed;
  inset: 0;
  background: var(--fla-tour-scrim);
}

.fla-tour__callout {
  position: fixed;
  z-index: 1;
  width: min(320px, calc(100vw - 24px));
  box-sizing: border-box;
  padding: var(--fla-md);
  background: var(--fla-overlay);
  color: var(--fla-ink);
  border: 1px solid var(--fla-line);
  border-radius: var(--fla-r-lg);
  box-shadow: var(--fla-shadow);
  pointer-events: auto;
  font-family: var(--fla-sans);
}

/* `scale`, not `transform: scale()` — the centred variant needs
   `transform: translate(-50%, -50%)`, and the individual scale property
   composes with it instead of overwriting it. */
@keyframes fla-tour-pop {
  from {
    opacity: 0;
    scale: 0.92;
  }
  60% {
    scale: 1.014;
  }
  to {
    opacity: 1;
    scale: 1;
  }
}

@keyframes fla-tour-spot-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.fla-tour__callout.is-in {
  animation: fla-tour-pop 0.26s cubic-bezier(0.34, 1.4, 0.64, 1) both;
}

.fla-tour__spot {
  animation: fla-tour-spot-in 0.2s ease both;
}

/* Exit: the whole overlay fades rather than blinking out. Timed to match the
   160ms removal delay in tour.js's destroy(). */
.fla-tour--out {
  opacity: 0;
  transition: opacity 0.16s ease;
  pointer-events: none;
}

.fla-tour__callout:focus {
  outline: none;
}

/* Position only. The width deliberately stays the same as an anchored
   callout's — a centred step used to be 400px against the anchored 320px,
   which is what made the "whole passages" and "conjugation" steps read as two
   different components. */
.fla-tour--centred .fla-tour__callout {
  left: 50% !important;
  top: 50% !important;
  transform: translate(-50%, -50%);
}

.fla-tour__title {
  margin: 0 0 var(--fla-sm);
  font-family: var(--fla-serif);
  font-size: 21px;
  font-weight: 500;
  line-height: 1.25;
  color: var(--fla-heading);
}

.fla-tour__body {
  font-size: 14px;
  line-height: 1.65;
  color: var(--fla-ink);
}

.fla-tour__body p {
  margin: 0 0 var(--fla-sm);
}

.fla-tour__body p:last-child {
  margin-bottom: 0;
}

/* Consecutive one-line paragraphs (the "▶ reads it aloud" style lists) sit
   tighter than prose paragraphs, so they read as a list without needing one. */
.fla-tour__body p + p {
  margin-top: -2px;
}

.fla-tour__body strong {
  font-weight: 600;
}

/* An inline key cap, for the shortcuts chapter. */
.fla-tour__body kbd {
  font-family: var(--fla-sans);
  font-size: 11px;
  padding: 1px 5px;
  border: 1px solid var(--fla-line-strong);
  border-bottom-width: 2px;
  border-radius: var(--fla-r-sm);
  background: var(--fla-sunken);
  color: var(--fla-ink);
}

.fla-tour__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--fla-sm);
  margin-top: var(--fla-md);
  padding-top: var(--fla-gutter);
  border-top: 1px solid var(--fla-line);
}

.fla-tour__count {
  font-size: 12px;
  font-weight: 500;
  color: var(--fla-ink-muted);
  font-variant-numeric: tabular-nums;
}

.fla-tour__btns {
  display: flex;
  gap: 6px;
}

.fla-tour__btns button {
  padding: 6px 12px;
  border: 1px solid var(--fla-line-strong);
  border-radius: var(--fla-r-sm);
  background: var(--fla-overlay);
  color: var(--fla-ink-muted);
  font-family: var(--fla-sans);
  font-size: 13px;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
}

.fla-tour__btns button:hover {
  background: var(--fla-raised);
  border-color: var(--fla-ink-faint);
  color: var(--fla-ink);
}

.fla-tour__btns button[hidden] {
  display: none;
}

/* One filled action per callout: keep going. */
.fla-tour__next {
  background: var(--fla-primary) !important;
  border-color: var(--fla-primary) !important;
  color: var(--fla-on-primary) !important;
  font-weight: 500;
}

.fla-tour__next:hover {
  background: var(--fla-primary-soft) !important;
  border-color: var(--fla-primary-soft) !important;
}

/* Skip is always reachable but never competes with Next. */
.fla-tour__skip {
  border-color: transparent !important;
  color: var(--fla-ink-muted) !important;
}

.fla-tour__skip:hover {
  color: var(--fla-ink) !important;
}

/* -----------------------------
   Transient hint (lib/tour.js#showHint)
   The callout on its own: no cutout, no blocker, no footer, and the page stays
   fully live behind it. It borrows .fla-tour__callout wholesale so a hint and a
   step are visibly the same component.
   ----------------------------- */

.fla-tour--hint .fla-tour__callout {
  /* Room for the close button in the top-right corner. */
  padding-right: calc(var(--fla-md) + 16px);
  /* A hint has no scrim to set it apart from the page behind it (a step's
     does that job) — so it needs to look less like ordinary page furniture
     some other way: an accent border and a heavier shadow than the tour's
     own callout carries by default. */
  border-color: var(--fla-accent-line);
  box-shadow: var(--fla-shadow), 0 0 0 1px var(--fla-accent-line);
}

/* A centred hint has nothing to point at, but it must NOT paint the scrim the
   centred tour step does — a hint never takes the screen. */
.fla-tour--hint.fla-tour--centred::before {
  content: none;
}

.fla-tour__hint-close {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 22px;
  height: 22px;
  padding: 0;
  border: none;
  border-radius: var(--fla-r-sm);
  background: transparent;
  color: var(--fla-ink-muted);
  font-family: var(--fla-sans);
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  transition: background 0.12s, color 0.12s;
}

.fla-tour__hint-close:hover {
  background: var(--fla-raised);
  color: var(--fla-ink);
}

/* Arrow — a rotated square tucked under the callout's edge, so it inherits the
   card's background and border and reads as one shape with it. */
.fla-tour__arrow {
  position: absolute;
  width: 12px;
  height: 12px;
  background: var(--fla-overlay);
  border: 1px solid var(--fla-line);
  transform: rotate(45deg);
}

.fla-tour__callout[data-placement="centre"] .fla-tour__arrow {
  display: none;
}

.fla-tour__callout[data-placement="bottom"] .fla-tour__arrow {
  top: -7px;
  left: var(--fla-tour-arrow-pos, 50%);
  margin-left: -6px;
  border-right: none;
  border-bottom: none;
}

.fla-tour__callout[data-placement="top"] .fla-tour__arrow {
  bottom: -7px;
  left: var(--fla-tour-arrow-pos, 50%);
  margin-left: -6px;
  border-left: none;
  border-top: none;
}

.fla-tour__callout[data-placement="right"] .fla-tour__arrow {
  left: -7px;
  top: var(--fla-tour-arrow-pos, 50%);
  margin-top: -6px;
  border-right: none;
  border-top: none;
}

.fla-tour__callout[data-placement="left"] .fla-tour__arrow {
  right: -7px;
  top: var(--fla-tour-arrow-pos, 50%);
  margin-top: -6px;
  border-left: none;
  border-bottom: none;
}

@media (prefers-reduced-motion: reduce) {
  .fla-tour__spot,
  .fla-tour__callout,
  .fla-tour__callout.is-in,
  .fla-tour--out {
    transition: none;
    animation: none;
  }
}