/* The clickable plates — layout for bruckner-grid.html */

.grid-legend {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px 6px;
  font-size: 13px; color: var(--dim); margin: 14px 0 4px;
}
.grid-legend .lg {
  display: inline-block; width: 26px; height: 15px; border-radius: 4px;
  margin-left: 14px; vertical-align: -2px;
}
.grid-legend .lg:first-child { margin-left: 0; }
.lg-build { border: 2px dashed color-mix(in srgb, var(--accent) 75%, transparent); }
.lg-known { border: 2px solid color-mix(in srgb, var(--dim) 55%, transparent); }
.lg-tbd   { border: 2px dotted color-mix(in srgb, var(--dim) 40%, transparent); }

/* ------------------------------------------------------------- the sheets */
.gsheet { margin: 16px 0 34px; }
.gsheet-frame {
  position: relative; border: 1px solid var(--line); border-radius: 10px;
  overflow: hidden; background: var(--line);
  aspect-ratio: 1600 / 1952;   /* every sheet scan has this shape: no reflow on load */
}
.gsheet-frame img { display: block; width: 100%; height: auto; }

.gsheet-cap {
  display: flex; flex-wrap: wrap; gap: 4px 14px; align-items: baseline;
  font-size: 13px; color: var(--dim); padding: 7px 4px 0;
}
.gsheet-cap b { color: var(--text); }

/* hotspots */
.hs {
  position: absolute; border: 2px dashed transparent; border-radius: 7px;
  cursor: pointer; -webkit-tap-highlight-color: transparent;
  appearance: none; background: transparent; padding: 0; margin: 0; font: inherit;
  transition: border-color .16s ease, background-color .16s ease, box-shadow .16s ease;
}
.hs:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 2px; }

.hs-build { border-color: color-mix(in srgb, var(--accent) 55%, transparent); }
.hs-build:hover, .hs-build.on {
  border-style: solid;
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}
.hs-build.on { box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 38%, transparent); }

.hs-known { cursor: help; }
.hs-known:hover, .hs-known.on {
  border-style: solid;
  border-color: color-mix(in srgb, var(--dim) 80%, transparent);
  background: color-mix(in srgb, var(--dim) 12%, transparent);
}
.hs-tbd { cursor: help; }
.hs-tbd:hover, .hs-tbd.on {
  border-style: dotted;
  border-color: color-mix(in srgb, var(--dim) 55%, transparent);
}

/* one-time attention pulse when a sheet scrolls into view */
@keyframes hs-pulse {
  0%   { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 45%, transparent); }
  70%  { box-shadow: 0 0 0 9px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}
.hs-build.pulse { animation: hs-pulse 1.1s ease-out 1; }

/* hover label chip */
.hs-tip {
  position: absolute; left: 0; bottom: calc(100% + 5px); z-index: 5;
  max-width: 300px; width: max-content; padding: 4px 9px;
  font-size: 12px; line-height: 1.4; border-radius: 6px;
  background: color-mix(in srgb, var(--bg) 88%, #000 12%);
  border: 1px solid var(--line); color: var(--text);
  box-shadow: 0 3px 14px rgb(0 0 0 / .3);
  opacity: 0; pointer-events: none; transform: translateY(3px);
  transition: opacity .14s ease, transform .14s ease;
}
.hs-tip b { color: var(--accent); font-family: var(--mono); font-weight: 600; }
.hs-known .hs-tip b, .hs-tbd .hs-tip b { color: var(--dim); }
.hs:hover .hs-tip { opacity: 1; transform: none; }
.hs.tip-below .hs-tip { bottom: auto; top: calc(100% + 5px); }
.hs.tip-right .hs-tip { left: auto; right: 0; }

/* ------------------------------------------------------------- the viewer */
.gviewer {
  margin-top: 12px; border: 1px solid var(--line); border-radius: 10px;
  background: color-mix(in srgb, var(--line) 16%, transparent);
  overflow: hidden;
}
.gviewer[hidden] { display: none; }
.gviewer-head {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 12px;
  padding: 11px 14px; border-bottom: 1px solid var(--line);
}
.gviewer-head .gref {
  font-family: var(--mono); font-size: 12px; letter-spacing: .04em;
  color: var(--accent); background: color-mix(in srgb, var(--accent) 14%, transparent);
  border-radius: 5px; padding: 2px 8px;
}
.gviewer-head h3 { margin: 0; font-size: 15.5px; }
.gviewer-head .spacer { flex: 1; }
.gviewer-head code {
  font-size: 12px; color: var(--dim);
  background: color-mix(in srgb, var(--line) 45%, transparent);
  padding: 2px 7px; border-radius: 5px;
}
.gviewer-head a {
  font-size: 12.5px; color: var(--accent-2); text-decoration: none; white-space: nowrap;
}
.gviewer-head a:hover { text-decoration: underline; }
.gviewer-head .gclose {
  border: 1px solid var(--line); background: none; color: var(--dim);
  font-size: 14px; line-height: 1; border-radius: 6px; padding: 4px 8px; cursor: pointer;
}
.gviewer-head .gclose:hover { border-color: var(--accent); color: var(--accent); }

.gviewer .bfig { padding: 12px 14px 6px; }

.gviewer-quote {
  margin: 12px 14px 2px; padding: 10px 14px;
  border-left: 3px solid var(--accent-2); border-radius: 0 8px 8px 0;
  background: color-mix(in srgb, var(--accent-2) 8%, transparent);
  font-size: 13.5px; line-height: 1.55;
}
.gviewer-quote i { color: var(--text); }
.gviewer-quote cite {
  display: block; margin-top: 6px; font-style: normal; font-size: 12.5px; color: var(--dim);
}

.gviewer-info { padding: 6px 16px 14px; max-width: 74ch; }
.gviewer-info h4 {
  margin: 14px 0 4px; font-size: 11px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--dim);
}
.gviewer-info p { margin: 0 0 9px; font-size: 14px; line-height: 1.6; }
.gviewer-info .aka { font-size: 13.5px; }
.gviewer-info .aka span {
  display: inline-block; margin: 2px 6px 2px 0; padding: 2px 8px;
  border: 1px solid var(--line); border-radius: 20px; color: var(--text); font-size: 12.5px;
}
.gviewer-info .ids { font-family: var(--mono); font-size: 12px; color: var(--dim); }
.gviewer-info .refs { font-size: 12.5px; color: var(--dim); }
.gviewer-info .refs a { color: var(--accent-2); text-decoration: none; }
.gviewer-info .refs a:hover { text-decoration: underline; }

@media (max-width: 760px) {
  .hs-tip { display: none; }
}