/* The title slide: words on the left, the painting on the right.
   What moves is in title.js; this file only says where things end up,
   and what they look like before they arrive. */

.slide-title.active { display: grid; }

.slide-title {
  grid-template-columns: 640px 1fr;
  gap: 90px;
  align-items: center;
  padding: 90px 110px 150px 140px;
}

.title-talk {
  font-size: 92px;
  line-height: 1.05;
}

/* the ringdown under the title, drawn by title.js */
.title-ring {
  display: block;
  width: 560px;
  height: 64px;
  margin: 34px 0 30px -4px;
  overflow: visible;
  cursor: pointer;
}

.title-ring path {
  fill: none;
  stroke: var(--accent);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.title-speaker { font-size: 46px; }

.title-affil {
  font-size: 32px;
  color: var(--muted);
}

.title-event {
  margin-top: 36px;
  font-size: 30px;
  line-height: 1.3;
  color: var(--muted);
}

/* collaborators, small, under the meeting */
.title-with {
  margin-top: 26px;
  font-size: 19px;
  line-height: 1.45;
  color: var(--muted);
}

/* one logo per paper: navy lettering on the latte, cream on the night sky */
.title-logo {
  display: block;
  height: 80px;
  margin-top: 40px;
}

:root[data-theme="dark"] .logo-light,
:root:not([data-theme="dark"]) .logo-dark { display: none; }

.title-art img {
  width: 100%;
  max-height: none;
}

.title-art .cite {
  text-align: right;
  font-size: 22px;
}

/* ----- arrival ------------------------------------------------------
   The words rise in turn (each carries its own delay, --d, in the HTML).
   The painting develops like a print in the tray: blurred, flat and pale,
   then sharp. Coming back to the slide with ← skips all of it. */

.slide-title .t-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.9s ease var(--d, 0s), transform 0.9s ease var(--d, 0s);
}

.slide-title .title-art img {
  opacity: 0;
  filter: blur(10px) contrast(0.5) brightness(1.25);
  transition: opacity 1.2s ease 0.3s, filter 3.2s ease 0.3s;
}

.slide-title .title-art .cite {
  opacity: 0;
  transition: opacity 1s ease 2.6s;
}

.slide-title.play .t-in,
.slide-title.play .title-art .cite {
  opacity: 1;
  transform: none;
}

.slide-title.play .title-art img {
  opacity: 1;
  filter: none;
}

.slide-title.instant .t-in,
.slide-title.instant .title-art img,
.slide-title.instant .title-art .cite { transition: none; }

@media print {
  .slide-title .t-in,
  .slide-title .title-art img,
  .slide-title .title-art .cite { opacity: 1; transform: none; filter: none; }
}