/* ------------------------------------------------------------------
   map.css - the viewer: index pane, hotspots, name tag, info box.
   Colours and fonts come from base.css.

   Layout: the index pane sits top left, the info box top right, and the
   zoom buttons bottom left. On a phone the index is a drop-down and the
   info box is a sheet along the bottom.
   ------------------------------------------------------------------ */


/* ---- Index pane (top left) ----------------------------------------
   The title plate, with the list of places under it. js/nav.js adds the
   class "is-open" while the list is showing.
   ------------------------------------------------------------------- */

#nav {
  position: fixed;
  top: 14px;
  left: 20px;
  z-index: 1000;            /* above the map panes */
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
  max-height: calc(100vh - 14px - 110px);   /* stops short of the zoom buttons */
  color: var(--ink);
  background: var(--paper);
  border: 2.5px solid var(--ink);
  border-radius: 6px;
  box-shadow: var(--cast);
}
#nav.is-open { width: 250px; }

#plate {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  column-gap: 12px;
  padding: 7px 10px 8px 16px;
}

#title {
  flex: 1;
  margin: 0;
  font: 800 24px/1.15 var(--serif);
}

/* On a sub-map: a line above the title that leads back up. */
#back {
  flex-basis: 100%;
  margin-bottom: 1px;
  font: italic 500 16px/1.3 var(--serif);
  color: var(--pine);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
}
#back[hidden] { display: none; }

/* The arrow that opens and closes the list. Drawn from two borders. */
#nav-toggle {
  flex: none;
  width: 30px;
  height: 30px;
  padding: 0;
  background: none;
  border: 0;
  border-radius: 4px;
  cursor: pointer;
}
#nav-toggle::before {
  content: "";
  display: block;
  width: 8px;
  height: 8px;
  margin: 0 auto 4px;
  border-right: 2.5px solid var(--ink);
  border-bottom: 2.5px solid var(--ink);
  transform: rotate(45deg);               /* points down: "there's more" */
  transition: transform 0.15s ease-out;
}
#nav.is-open #nav-toggle::before {
  margin: 4px auto 0;
  transform: rotate(-135deg);             /* points up: "put it away" */
}
#nav-toggle:hover { background: var(--paper-deep); }
#nav-toggle[hidden] { display: none; }

#nav-body {
  display: none;
  overflow-y: auto;
  padding: 6px 0 8px;
  border-top: 2px solid var(--ink);
}
#nav.is-open #nav-body { display: block; }

#places,
#other-maps ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

/* One place in the list. The dot on the left is the torch: it lights when
   the pointer is on this entry, or on the place itself on the map. */
#places button {
  position: relative;
  display: block;
  width: 100%;
  padding: 4px 14px 5px 34px;
  font: 500 18px/1.25 var(--serif);
  color: var(--ink);
  text-align: left;
  background: none;
  border: 0;
  cursor: pointer;
}
#places button::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 0.62em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ink-soft);
  opacity: 0.35;
  transition: opacity 0.12s, background 0.12s, box-shadow 0.12s;
}
#places button:hover,
#places button:focus-visible,
#places button.is-hot {
  color: var(--pine);
  outline: none;
}
#places button:hover::before,
#places button:focus-visible::before,
#places button.is-hot::before {
  background: var(--torch);
  opacity: 1;
  box-shadow: 0 0 0 3px rgba(240, 127, 31, 0.28);
}
/* The place whose info box is open. */
#places button.is-current {
  font-weight: 800;
  background: var(--paper-deep);
}
#places button.is-current::before {
  background: var(--ink);
  opacity: 1;
}

#other-maps {
  margin-top: 8px;
  padding: 8px 16px 0;
  border-top: 1.5px solid rgba(59, 31, 43, 0.3);
}
#other-maps h2 {
  margin: 0 0 2px;
  font: italic 500 15px/1.3 var(--serif);
  color: var(--ink-soft);
}
#other-maps a {
  display: block;
  padding: 2px 0;
  font: 600 17px/1.3 var(--serif);
  color: var(--pine);
  text-underline-offset: 3px;
}

/* Opened from the editor's Preview button: say so, since these shapes
   may not be saved yet. */
.is-preview #title::after {
  content: "preview";
  margin-left: 10px;
  padding: 1px 8px 2px;
  font: italic 500 14px/1.3 var(--serif);
  color: var(--paper);
  background: var(--pine);
  border-radius: 3px;
  vertical-align: 3px;
}


/* ---- Zoom buttons (bottom left) ------------------------------------
   Leaflet's own, restyled to match the boxes.
   ------------------------------------------------------------------- */

.leaflet-bottom.leaflet-left .leaflet-control-zoom {
  margin: 0 0 22px 20px;
  border: 2.5px solid var(--ink);
  border-radius: 6px;
  box-shadow: var(--cast);
}
.leaflet-touch .leaflet-control-zoom a,
.leaflet-control-zoom a {
  width: 34px;
  height: 34px;
  font: 700 22px/32px var(--serif);
  color: var(--ink);
  background: var(--paper);
  border-bottom: 1.5px solid var(--ink);
}
.leaflet-control-zoom a:first-child { border-radius: 3px 3px 0 0; }
.leaflet-control-zoom a:last-child  { border-radius: 0 0 3px 3px; border-bottom: 0; }
.leaflet-control-zoom a:hover { color: var(--ink); background: var(--paper-deep); }
.leaflet-control-zoom a.leaflet-disabled { color: rgba(59, 31, 43, 0.3); background: var(--paper); }


/* ---- Hotspots ------------------------------------------------------
   Each hotspot is a group (.spot) holding two pictures, both made in
   js/hotspots.js:

     .halo  the glow around the shape
     .lift  a cut-out copy of the painting inside the shape

   js/hotspots.js sets two numbers on the group:
     --near   0 to 1, how close the pointer is
     --grow   how much to enlarge when it pops up
   and adds the class "is-up" while the shape is hovered or selected.
   ------------------------------------------------------------------- */

.spot {
  pointer-events: none;

  /* Scale from the centre of the shape, not the corner of the map. */
  transform-box: fill-box;
  transform-origin: center;

  /* Settling back down: quick and plain. */
  transition: transform 0.2s ease-out;
}

.spot .halo {
  opacity: var(--near, 0);
  transition: opacity 0.2s linear;
}

.spot .lift {
  opacity: 0;
  transition: opacity 0.1s ease-out;
}

.spot.is-up {
  transform: scale(var(--grow, 1.35));

  /* Popping up: overshoot, dip back, settle. A plain overshoot for
     browsers that don't know linear(), a proper bounce for the rest. */
  transition: transform 0.4s cubic-bezier(0.2, 0.9, 0.3, 1.4);
}
@supports (transition-timing-function: linear(0, 1)) {
  .spot.is-up {
    transition: transform 0.6s linear(
      0, 0.22 5%, 0.68 12%, 1.02 19%, 1.2 26%, 1.25 31%, 1.2 37%,
      1.03 48%, 0.955 56%, 0.94 61%, 0.965 69%, 1.01 80%, 1.015 87%, 1
    );
  }
}

.spot.is-up .halo,
.spot.is-up .lift {
  opacity: 1;
}

/* The pointer turns into a hand over a hotspot. */
.leaflet-container.on-spot,
.leaflet-container.on-spot .leaflet-interactive {
  cursor: pointer;
}

/* Name tag above the hovered hotspot. */
.leaflet-tooltip.spot-label {
  padding: 2px 11px 3px;
  font: 700 16px/1.3 var(--serif);
  color: var(--ink);
  background: var(--paper);
  border: 2px solid var(--ink);
  border-radius: 4px;
  box-shadow: -3px 3px 0 rgba(28, 16, 22, 0.55);
  white-space: nowrap;
}
.leaflet-tooltip.spot-label::before { display: none; }   /* no arrow */

/* People who ask their OS for less motion get the glow without the bounce. */
@media (prefers-reduced-motion: reduce) {
  .spot,
  .spot.is-up { transition: none; }
  #panel { transition: none !important; }
}


/* ---- Info box (top right) ------------------------------------------ */

#panel {
  position: fixed;
  top: 14px;
  right: 22px;
  z-index: 1001;
  box-sizing: border-box;
  width: min(390px, calc(100vw - 40px));
  max-height: calc(100vh - 14px - 28px);
  overflow-y: auto;
  padding: 22px 26px 24px;
  color: var(--ink);
  background: var(--paper);
  border: 3px solid var(--ink);
  border-radius: 6px;
  box-shadow: var(--cast);

  /* Closed: invisible and nudged toward the edge it slides in from. */
  opacity: 0;
  visibility: hidden;
  transform: translateX(14px);
  transition: opacity 0.16s ease-out, transform 0.16s ease-out, visibility 0s 0.16s;
}

#panel.is-open {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition: opacity 0.2s ease-out, transform 0.24s cubic-bezier(0.2, 0.9, 0.3, 1.15);
}

.panel-title {
  margin: 0 34px 0 0;                     /* leaves room for the close button */
  font: 800 31px/1.08 var(--serif);
  letter-spacing: -0.005em;
  text-wrap: balance;
  outline: none;
}

.panel-subtitle {
  margin: 7px 0 0;
  font: italic 500 19px/1.3 var(--serif);
  color: var(--pine);
}

.panel-body {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 2px solid var(--ink);
  font: 400 18px/1.5 var(--serif);
}
.panel-body p {
  margin: 0 0 0.75em;
  white-space: pre-line;                  /* single line breaks in "info" are kept */
}
.panel-body p:last-child { margin-bottom: 0; }

.panel-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  padding: 0 0 3px;
  font: 400 26px/1 var(--serif);
  color: var(--paper);
  background: var(--ink);
  border: 0;
  border-radius: 50%;
  cursor: pointer;
}
.panel-close:hover { background: var(--pine); }

.panel-enter {
  display: inline-block;
  margin-top: 18px;
  padding: 7px 16px 8px;
  font: 700 18px/1.2 var(--serif);
  color: var(--paper);
  background: var(--pine);
  border: 2.5px solid var(--ink);
  border-radius: 5px;
  text-decoration: none;
}
.panel-enter:hover { background: var(--ink); }
.panel-enter[hidden] { display: none; }

.panel-close:focus-visible,
.panel-enter:focus-visible,
#nav-toggle:focus-visible,
#back:focus-visible,
#other-maps a:focus-visible {
  outline: 3px solid var(--torch);
  outline-offset: 2px;
}


/* ---- Phones --------------------------------------------------------
   The index becomes a drop-down from the title; the info box becomes a
   sheet along the bottom.
   ------------------------------------------------------------------- */

@media (max-width: 640px) {
  #nav {
    top: 10px;
    left: 14px;
    max-width: calc(100vw - 28px);
    max-height: 60vh;
  }
  #nav.is-open { width: min(250px, calc(100vw - 28px)); }
  #title { font-size: 20px; }

  #panel {
    top: auto;
    left: 14px;
    right: 10px;
    bottom: 14px;
    width: auto;
    max-height: 52vh;
    padding: 18px 20px 20px;
    transform: translateY(14px);
  }
  #panel.is-open { transform: none; }
  .panel-title { font-size: 26px; }

  .leaflet-bottom.leaflet-left .leaflet-control-zoom { margin: 0 0 18px 14px; }
}