/* ------------------------------------------------------------------
   Storyline-style player shell
   Mimics the Articulate Storyline 360 "modern" player: top title bar,
   collapsible menu sidebar, fixed 16:9 stage (authored at 1280x720 and
   scaled to fit), and a bottom control bar with seekbar + prev/next.
   ------------------------------------------------------------------ */
:root {
  --pl-bg: #0f1420;
  --pl-chrome: #171d2b;
  --pl-chrome-2: #1f2738;
  --pl-line: #2b3448;
  --pl-text: #e8ecf4;
  --pl-muted: #8d97ab;
  --pl-accent: #4fb3a9;
  --pl-accent-2: #e2603b;
  --pl-warn: #f2b84b;
  --pl-danger: #e0524a;
  --pl-ok: #4caf7a;
  --stage-w: 1280px;
  --stage-h: 720px;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--pl-bg);
  color: var(--pl-text);
  font-family: "Inter", system-ui, -apple-system, Segoe UI, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}
button { font: inherit; cursor: pointer; }

.pl {
  display: grid;
  grid-template-columns: 260px 1fr auto;
  grid-template-rows: 52px 1fr 60px;
  grid-template-areas:
    "top top top"
    "menu stage dev"
    "menu bar dev";
  height: 100vh;
}
.pl.menu-collapsed { grid-template-columns: 0 1fr auto; }
.pl.menu-collapsed .pl-menu { visibility: hidden; }

/* top bar */
.pl-top {
  grid-area: top;
  display: flex; align-items: center; gap: 12px;
  padding: 0 14px 0 8px;
  background: var(--pl-chrome);
  border-bottom: 1px solid var(--pl-line);
}
.pl-iconbtn {
  width: 36px; height: 36px; border-radius: 8px;
  display: grid; place-items: center;
  background: transparent; border: 0; color: var(--pl-muted);
}
.pl-iconbtn:hover { background: var(--pl-chrome-2); color: var(--pl-text); }
.pl-title { font-weight: 600; font-size: 15px; letter-spacing: .01em; flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.pl-title small { color: var(--pl-muted); font-weight: 400; margin-left: 10px; }
.pl-tab {
  height: 32px; padding: 0 12px; border-radius: 6px;
  background: transparent; border: 1px solid transparent; color: var(--pl-muted); font-size: 13px;
}
.pl-tab:hover { color: var(--pl-text); background: var(--pl-chrome-2); }
.pl-tab.on { color: var(--pl-text); border-color: var(--pl-accent); background: rgba(79,179,169,.12); }
.pl-back { color: var(--pl-muted); font-size: 13px; text-decoration: none; padding: 6px 10px; border-radius: 6px; }
.pl-back:hover { color: var(--pl-text); background: var(--pl-chrome-2); }

/* menu */
.pl-menu {
  grid-area: menu;
  background: var(--pl-chrome);
  border-right: 1px solid var(--pl-line);
  overflow-y: auto;
  padding: 14px 10px;
}
.pl-menu h4 { margin: 4px 8px 10px; font-size: 11px; text-transform: uppercase; letter-spacing: .12em; color: var(--pl-muted); }
.pl-menu ol { list-style: none; margin: 0; padding: 0; }
.pl-menu li button {
  width: 100%; text-align: left;
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px; border-radius: 6px;
  background: transparent; border: 0; color: var(--pl-muted); font-size: 13.5px;
}
.pl-menu li button:hover:not(:disabled) { background: var(--pl-chrome-2); color: var(--pl-text); }
.pl-menu li button:disabled { opacity: .45; cursor: not-allowed; }
.pl-menu li.cur button { background: var(--pl-chrome-2); color: var(--pl-text); box-shadow: inset 3px 0 0 var(--pl-accent); }
.pl-menu .dot { width: 16px; height: 16px; border-radius: 50%; border: 1.5px solid currentColor; flex: none; display: grid; place-items: center; font-size: 10px; }
.pl-menu li.visited .dot { background: var(--pl-accent); border-color: var(--pl-accent); color: #0f1420; }
.pl-menu li.visited .dot::after { content: "✓"; font-weight: 700; }

/* stage */
.pl-stagewrap {
  grid-area: stage;
  position: relative;
  display: grid; place-items: center;
  overflow: hidden;
  padding: 18px;
}
.pl-stage {
  position: absolute; left: 50%; top: 50%;
  width: var(--stage-w); height: var(--stage-h);
  transform-origin: center center;
  transform: translate(-50%, -50%);
  background: #fff; color: #18202e;
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,.45);
}
.slide { position: absolute; inset: 0; animation: slideIn .45s ease both; }
@keyframes slideIn { from { opacity: 0; } to { opacity: 1; } }

/* layers */
.layer {
  position: absolute; inset: 0; z-index: 20;
  display: grid; place-items: center;
  background: rgba(10, 14, 22, .55);
  animation: fadeIn .25s ease both;
}
.layer.clear { background: transparent; pointer-events: none; }
.layer.clear > * { pointer-events: auto; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.layer-card {
  width: 760px; max-width: 90%;
  background: #fff; border-radius: 14px;
  padding: 36px 44px 32px;
  box-shadow: 0 30px 80px rgba(0,0,0,.35);
  animation: rise .35s cubic-bezier(.2,.8,.2,1) both;
}
@keyframes rise { from { transform: translateY(24px); opacity: 0; } to { transform: none; opacity: 1; } }

/* bottom bar */
.pl-bar {
  grid-area: bar;
  display: flex; align-items: center; gap: 14px;
  padding: 0 18px;
  background: var(--pl-chrome);
  border-top: 1px solid var(--pl-line);
}
.pl-seek { flex: 1; height: 6px; background: var(--pl-line); border-radius: 3px; overflow: hidden; }
.pl-seek i { display: block; height: 100%; width: 0; background: var(--pl-accent); transition: width .2s linear; }
.pl-count { font-size: 12px; color: var(--pl-muted); min-width: 64px; text-align: right; font-variant-numeric: tabular-nums; }
.pl-nav {
  height: 38px; padding: 0 18px; border-radius: 8px;
  border: 1px solid var(--pl-line); background: var(--pl-chrome-2); color: var(--pl-text);
  font-size: 13.5px; font-weight: 600;
  display: inline-flex; align-items: center; gap: 8px;
}
.pl-nav:hover:not(:disabled) { border-color: var(--pl-accent); }
.pl-nav:disabled { opacity: .35; cursor: not-allowed; }
.pl-nav.primary { background: var(--pl-accent); border-color: var(--pl-accent); color: #0b1a19; }

/* designer view: variables + triggers */
.pl-dev {
  grid-area: dev;
  width: 0; overflow: hidden;
  background: #121826;
  border-left: 1px solid var(--pl-line);
  transition: width .25s ease;
  font-size: 12.5px;
}
.pl.dev-open .pl-dev { width: 340px; }
.pl-dev-inner { width: 340px; height: 100%; overflow-y: auto; padding: 16px; }
.pl-dev h5 { margin: 6px 0 10px; font-size: 11px; text-transform: uppercase; letter-spacing: .12em; color: var(--pl-muted); display: flex; justify-content: space-between; }
.pl-dev p.note { color: var(--pl-muted); margin: 0 0 16px; line-height: 1.5; }
.var-table { width: 100%; border-collapse: collapse; margin-bottom: 22px; font-family: "JetBrains Mono", ui-monospace, Menlo, monospace; font-size: 12px; }
.var-table td { padding: 6px 8px; border-bottom: 1px solid var(--pl-line); }
.var-table td:first-child { color: #9fc7ff; }
.var-table td:nth-child(2) { color: var(--pl-muted); font-size: 10.5px; text-transform: uppercase; }
.var-table td:last-child { text-align: right; color: var(--pl-warn); }
.var-table tr.flash td { animation: varFlash 1s ease; }
@keyframes varFlash { 0% { background: rgba(242,184,75,.35); } 100% { background: transparent; } }
.trig { list-style: none; margin: 0; padding: 0; }
.trig li {
  padding: 9px 10px; margin-bottom: 6px; border-radius: 6px;
  background: var(--pl-chrome-2); border-left: 3px solid var(--pl-line);
  line-height: 1.45; color: #cfd6e4;
}
.trig li b { color: #fff; font-weight: 600; }
.trig li em { font-style: normal; color: var(--pl-accent); }
.trig li .cond { display: block; color: var(--pl-warn); margin-top: 3px; font-size: 11.5px; }
.trig li.fired { border-left-color: var(--pl-accent); animation: varFlash 1.2s ease; }

/* resources popover */
.pl-pop {
  position: absolute; top: 56px; right: 14px; z-index: 50;
  width: 300px; padding: 14px;
  background: var(--pl-chrome); border: 1px solid var(--pl-line); border-radius: 10px;
  box-shadow: 0 20px 50px rgba(0,0,0,.4);
  font-size: 13.5px; display: none;
}
.pl-pop.open { display: block; }
.pl-pop a { display: block; color: var(--pl-text); text-decoration: none; padding: 8px 10px; border-radius: 6px; }
.pl-pop a:hover { background: var(--pl-chrome-2); }
.pl-pop a small { display: block; color: var(--pl-muted); }

@media (max-width: 900px) {
  .pl { grid-template-columns: 0 1fr auto; }
  .pl .pl-menu { visibility: hidden; }
  .pl.menu-open-mobile { grid-template-columns: 220px 1fr auto; }
  .pl.menu-open-mobile .pl-menu { visibility: visible; }
  .pl.dev-open .pl-dev, .pl-dev-inner { width: 280px; }
  .pl-title small, .pl-back span { display: none; }
}

/* ---------- shared slide primitives (authored in 1280x720 px) ---------- */
.s-btn {
  height: 52px; padding: 0 28px; border-radius: 10px; border: 0;
  background: #1b2a41; color: #fff; font-size: 18px; font-weight: 600;
  display: inline-flex; align-items: center; gap: 10px;
  transition: transform .15s ease, background .15s ease, opacity .2s;
}
.s-btn:hover:not(:disabled) { transform: translateY(-2px); background: #24385a; }
.s-btn.accent { background: #e2603b; }
.s-btn.accent:hover:not(:disabled) { background: #cc522f; }
.s-btn.ghost { background: transparent; color: #1b2a41; box-shadow: inset 0 0 0 2px #1b2a41; }
.s-btn:disabled { opacity: .35; cursor: not-allowed; }
.s-eyebrow { font-size: 15px; letter-spacing: .16em; text-transform: uppercase; font-weight: 700; color: #e2603b; }
.s-h1 { font-family: "Fraunces", Georgia, serif; font-weight: 600; font-size: 64px; line-height: 1.02; margin: 0; letter-spacing: -.01em; }
.s-h2 { font-family: "Fraunces", Georgia, serif; font-weight: 600; font-size: 40px; line-height: 1.1; margin: 0; }
.s-p { font-size: 21px; line-height: 1.55; color: #3b4658; margin: 0; }