/* Tang & Associates Brand Book — presenter mode.
   Layered on top of brand-book.css. Activated by body.deck--present.
   The scroll deck remains in the DOM but is hidden + repositioned. */

body.deck--present{
  background:#000;
  overflow:hidden;
  margin:0;
}
body.deck--present .deck-header,
body.deck--present .skip-link{ display:none; }
body.deck--present .deck-main,
body.deck--present .deck{
  display:block;
  padding:0;
  margin:0;
  max-width:none;
  gap:0;
}

/* Each spread becomes an overlapping fullscreen layer.
   Only .active is visible; transitions cross-fade between them. */
body.deck--present .spread-frame{
  position:fixed;
  inset:0;
  width:auto;
  aspect-ratio:auto;
  margin:0;
  border-radius:0;
  box-shadow:none;
  background:#000;
  overflow:hidden;
  opacity:0;
  pointer-events:none;
  transition:opacity 240ms ease;
  z-index:1;
}
body.deck--present .spread-frame.active{
  opacity:1;
  pointer-events:auto;
  z-index:2;
}

/* The 1920x1080 inner spread is centered and scaled to fit the viewport.
   --scale-fit is set per-spread by presenter.js. */
body.deck--present .spread{
  position:absolute;
  top:50%; left:50%;
  width:1920px; height:1080px;
  transform-origin:center center;
  transform:translate(-50%, -50%) scale(var(--scale-fit, 0.5));
  background:var(--paper);
  box-shadow:0 0 0 1px rgba(255,255,255,0.04), 0 30px 90px rgba(0,0,0,0.6);
}

/* In present mode the per-spread footer page-number stays inside the spread
   itself (since each spread is a 1920x1080 island). The presenter chrome
   below is the meeting-room overlay. */

/* ==================== presenter chrome ==================== */

.presenter-chrome{
  position:fixed;
  bottom:0; left:0; right:0;
  z-index:50;
  display:flex; align-items:center; justify-content:space-between;
  padding:18px 28px;
  pointer-events:none;
  font-family:var(--sans);
  color:#fff;
  background:linear-gradient(to top, rgba(0,0,0,0.55), rgba(0,0,0,0));
  opacity:0;
  transition:opacity 200ms ease;
}
body.deck--present .presenter-chrome{ opacity:1; }
body.deck--present.idle .presenter-chrome{ opacity:0; }
body.deck--present.counter-hidden .presenter-chrome{ opacity:0; }

.presenter-chrome__left,
.presenter-chrome__right{
  display:flex; align-items:center; gap:12px;
  pointer-events:auto;
}
.presenter-counter{
  font-size:13px; letter-spacing:0.18em; text-transform:uppercase;
  font-variant-numeric:tabular-nums;
  color:rgba(255,255,255,0.85);
}
.presenter-counter strong{
  color:#fff; font-weight:600;
}
.presenter-progress{
  flex:1;
  margin:0 24px;
  height:2px;
  background:rgba(255,255,255,0.12);
  border-radius:2px;
  overflow:hidden;
  pointer-events:none;
}
.presenter-progress__fill{
  height:100%;
  background:var(--gold);
  width:0%;
  transition:width 240ms ease;
}
.presenter-arrow{
  width:36px; height:36px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,0.18);
  background:rgba(0,0,0,0.4);
  color:#fff;
  font-size:18px;
  display:flex; align-items:center; justify-content:center;
  cursor:pointer;
  transition:background 150ms ease, border-color 150ms ease;
}
.presenter-arrow:hover{
  background:rgba(255,255,255,0.1);
  border-color:rgba(255,255,255,0.4);
}
.presenter-hint{
  font-size:11px; letter-spacing:0.16em; text-transform:uppercase;
  color:rgba(255,255,255,0.5);
}

/* The deck-header "▶ Present" button now uses the shared .btn / .btn--primary
   system defined in brand-book.css. The .present-btn class is kept only as a
   selector hook for presenter.js, not for styling. */

/* ==================== blackout / whiteout ==================== */

.presenter-blank{
  position:fixed; inset:0; z-index:80;
  pointer-events:auto;
}
.presenter-blank.black{ background:#000; }
.presenter-blank.white{ background:#fff; }

/* ==================== help overlay ==================== */

.presenter-help{
  position:fixed; inset:0; z-index:90;
  display:flex; align-items:center; justify-content:center;
  background:rgba(0,0,0,0.75);
  font-family:var(--sans);
  color:#fff;
  padding:60px;
  pointer-events:auto;
}
.presenter-help__panel{
  background:#111;
  border:1px solid rgba(255,255,255,0.08);
  border-radius:8px;
  padding:36px 44px;
  max-width:840px;
  width:100%;
  max-height:90vh;
  overflow-y:auto;
}
.presenter-help h2{
  margin:0 0 4px;
  font-size:20px; font-weight:600;
}
.presenter-help h3{
  margin:24px 0 10px;
  font-size:11px; letter-spacing:0.22em; text-transform:uppercase;
  color:var(--gold);
  font-weight:500;
}
.presenter-help p.sub{
  margin:0 0 8px;
  font-size:13px;
  color:rgba(255,255,255,0.5);
}
.presenter-help table{
  border-collapse:collapse;
  width:100%;
  font-size:14px;
}
.presenter-help td{
  padding:6px 0;
  border-bottom:1px solid rgba(255,255,255,0.06);
  vertical-align:top;
}
.presenter-help td:first-child{
  width:160px;
  white-space:nowrap;
}
.presenter-help kbd{
  display:inline-block;
  font-family:var(--mono);
  font-size:11px;
  background:#222;
  border:1px solid rgba(255,255,255,0.12);
  border-bottom-width:2px;
  border-radius:4px;
  padding:2px 7px;
  margin-right:4px;
  color:#eee;
}

/* ==================== goto prompt ==================== */

.presenter-goto{
  position:fixed; left:50%; top:50%;
  transform:translate(-50%, -50%);
  z-index:95;
  background:#111;
  border:1px solid rgba(255,255,255,0.12);
  border-radius:8px;
  padding:24px 28px;
  font-family:var(--sans);
  color:#fff;
  display:flex; align-items:center; gap:14px;
}
.presenter-goto label{
  font-size:11px; letter-spacing:0.2em; text-transform:uppercase;
  color:var(--gold);
}
.presenter-goto input{
  background:#000;
  border:1px solid rgba(255,255,255,0.16);
  color:#fff;
  font:inherit;
  font-size:18px;
  font-variant-numeric:tabular-nums;
  width:80px;
  padding:8px 10px;
  border-radius:4px;
  text-align:center;
}
.presenter-goto input:focus{
  outline:none;
  border-color:var(--gold);
}
.presenter-goto .hint{
  font-size:11px; letter-spacing:0.2em; text-transform:uppercase;
  color:rgba(255,255,255,0.4);
}

/* ==================== overview grid ==================== */

.presenter-overview{
  position:fixed; inset:0; z-index:70;
  background:#0a0a0a;
  padding:56px 56px 28px;
  overflow-y:auto;
  pointer-events:auto;
}
.presenter-overview__header{
  display:flex; align-items:center; justify-content:space-between;
  margin-bottom:32px;
  color:#fff;
  font-family:var(--sans);
}
.presenter-overview__header h2{
  font-size:18px; font-weight:600; margin:0;
}
.presenter-overview__header .hint{
  font-size:11px; letter-spacing:0.2em; text-transform:uppercase;
  color:rgba(255,255,255,0.4);
}
.presenter-overview__grid{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:20px;
}
.thumb{
  position:relative;
  aspect-ratio:16/9;
  background:#fff;
  border-radius:6px;
  overflow:hidden;
  cursor:pointer;
  border:2px solid transparent;
  transition:border-color 150ms ease, transform 150ms ease;
}
.thumb:hover, .thumb.focused{
  border-color:var(--gold);
  transform:translateY(-2px);
}
.thumb.current{
  border-color:#fff;
}
.thumb__inner{
  position:absolute;
  top:0; left:0;
  width:1920px; height:1080px;
  transform-origin:top left;
  pointer-events:none;
}
.thumb__index{
  position:absolute;
  bottom:6px; left:8px;
  z-index:2;
  font-family:var(--mono);
  font-size:11px;
  color:rgba(255,255,255,0.85);
  background:rgba(0,0,0,0.5);
  padding:2px 6px;
  border-radius:3px;
  font-variant-numeric:tabular-nums;
}
.thumb__label{
  position:absolute;
  top:6px; left:8px;
  z-index:2;
  font-family:var(--sans);
  font-size:10px;
  letter-spacing:0.2em;
  text-transform:uppercase;
  color:rgba(255,255,255,0.85);
  background:rgba(0,0,0,0.5);
  padding:3px 7px;
  border-radius:3px;
}

/* ==================== laser dot ==================== */

body.deck--present.laser-on{ cursor:none; }
body.deck--present.laser-on *{ cursor:none !important; }
.presenter-laser{
  position:fixed;
  width:18px; height:18px;
  border-radius:50%;
  pointer-events:none;
  z-index:120;
  background:radial-gradient(circle at center, rgba(230, 57, 70, 0.95) 0%, rgba(230, 57, 70, 0.7) 40%, rgba(230, 57, 70, 0) 70%);
  box-shadow:0 0 14px rgba(230, 57, 70, 0.7);
  transform:translate(-50%, -50%);
  transition:opacity 100ms ease;
}

/* ==================== annotation canvas ==================== */

.presenter-canvas{
  position:fixed;
  inset:0;
  z-index:60;
  pointer-events:none;
}
body.deck--present.draw-on .presenter-canvas{
  pointer-events:auto;
  cursor:crosshair;
}
body.deck--present.draw-on{ cursor:crosshair; }

/* ==================== idle cursor hide ==================== */

body.deck--present.idle:not(.laser-on):not(.draw-on){ cursor:none; }

/* ==================== print: presenter chrome must not leak ==================== */
@media print {
  .presenter-chrome,
  .presenter-help,
  .presenter-goto,
  .presenter-overview,
  .presenter-laser,
  .presenter-canvas,
  .presenter-blank{
    display:none !important;
  }
  body.deck--present{
    background:#fff;
    overflow:visible;
  }
  body.deck--present .spread-frame{
    position:relative;
    inset:auto;
    opacity:1;
    pointer-events:auto;
    page-break-after:always;
    aspect-ratio:1920/1080;
    width:100%;
  }
  body.deck--present .spread{
    transform:scale(var(--scale, 1));
    transform-origin:top left;
    top:0; left:0;
    box-shadow:none;
  }
}