/* Hero lockup — Vignelli-style pipe-separated primary actions */
.hero-lockup {
  display: inline-flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.5rem;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-weight: 700;
  font-size: clamp(1.25rem, 2.4vw, 1.75rem);
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.hero-lockup a {
  color: var(--fg);
  text-decoration: none;
  position: relative;
  padding-bottom: 2px;
  transition: color 0.2s ease;
  text-shadow:
    0 0 18px rgba(212, 163, 115, 0.2),
    0 0 2px  rgba(212, 163, 115, 0.3);
}
.hero-lockup a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.hero-lockup a:hover { color: var(--accent); }
.hero-lockup a:hover::after { transform: scaleX(1); }
.hero-lockup .sep {
  color: var(--fg-faint);
  opacity: 0.6;
  font-weight: 300;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.25s, border-color 0.25s, color 0.25s, transform 0.08s;
  text-decoration: none;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--accent);
  color: var(--bg);
}
.btn-primary:hover { background: var(--accent-hover); color: var(--bg); }
.btn-ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--border-strong);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* Cards — luxury: thin hairline, subtle lift, amber hairline on hover (not a flashy glow) */
.card {
  position: relative;
  background: linear-gradient(180deg, rgba(255,255,255,0.015), rgba(255,255,255,0));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color 0.3s ease, transform 0.3s ease;
}
.card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 2rem; height: 1px;
  background: var(--accent);
  opacity: 0;
  transition: opacity 0.3s ease, width 0.3s ease;
}
.card:hover::before { opacity: 1; width: 3.5rem; }
.card:hover { border-color: var(--border-strong); }
.card h3 { margin-top: 0; }
.card .meta {
  color: var(--fg-faint);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 0.75rem;
}

/* Speaker card */
.speaker { display: flex; flex-direction: column; gap: 1rem; }
.speaker .photo {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: var(--radius);
  background: var(--bg-elev-2);
  filter: grayscale(0.3) contrast(1.05);
}
.speaker .role {
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
}
.speaker .affiliation { color: var(--fg-faint); font-size: 0.85rem; letter-spacing: 0.02em; }

/* Tables */
.table-wrap { overflow-x: auto; }
table.program {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}
table.program th, table.program td {
  text-align: left;
  padding: 1rem 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
table.program thead th {
  color: var(--fg-faint);
  font-weight: 600;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  background: transparent;
  border-bottom: 1px solid var(--border-strong);
}
table.program tbody tr { transition: background 0.25s ease; }
table.program tbody tr:hover { background: rgba(212, 163, 115, 0.04); }
table.program .time {
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  color: var(--fg);
  font-weight: 600;
  letter-spacing: 0.02em;
}
table.program .type {
  display: inline-block;
  padding: 0.1rem 0;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-weight: 600;
  color: var(--fg-faint);
  border-bottom: 1px solid var(--border-strong);
}
table.program .type.keynote { color: var(--accent); border-color: var(--accent); }
table.program .type.paper { color: var(--fg); border-color: var(--fg-dim); }
table.program .type.workshop { color: var(--cool); border-color: var(--cool); }
table.program .type.wip { color: #a98fc0; border-color: #a98fc0; }

/* Room figures (venue gallery) */
figure.room {
  margin: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-elev);
  transition: border-color 0.3s ease;
}
figure.room:hover { border-color: var(--border-strong); }
figure.room img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
  filter: grayscale(0.15) contrast(1.03);
}
figure.room figcaption {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 0.9rem 1.1rem;
}
figure.room .room-name { color: var(--fg); font-weight: 600; font-size: 0.95rem; }
figure.room .room-credit {
  color: var(--fg-faint);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  white-space: nowrap;
}

/* Venue gallery — one wide hero (panorama) + a row of three */
.venue-gallery { display: grid; gap: 1rem; grid-template-columns: repeat(3, 1fr); }
.venue-gallery .hero { grid-column: 1 / -1; }
.venue-gallery .hero img { aspect-ratio: 3 / 1; }
@media (max-width: 760px) {
  .venue-gallery { grid-template-columns: 1fr; }
  .venue-gallery .hero img { aspect-ratio: 16 / 9; }
}
.venue-gallery img { cursor: zoom-in; }

/* Lightbox — click a gallery image to view it large */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4vh 4vw;
  background: rgba(6, 9, 12, 0.92);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  cursor: zoom-out;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}
.lightbox.open { opacity: 1; visibility: visible; }
.lightbox img {
  max-width: 100%;
  max-height: 92vh;
  object-fit: contain;
  border-radius: var(--radius);
  box-shadow: 0 20px 70px rgba(0, 0, 0, 0.6);
}
.lightbox-close {
  position: absolute;
  top: 1rem;
  right: 1.4rem;
  background: transparent;
  border: 0;
  color: var(--fg);
  font-size: 2.2rem;
  line-height: 1;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.2s ease;
}
.lightbox-close:hover { opacity: 1; }

/* Day heading */
.day-heading {
  margin: 3rem 0 1rem;
  padding-bottom: 0.5rem;
  color: var(--fg);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-weight: 600;
  color: var(--accent);
}

/* Controls bar */
.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: flex-end;
  margin-bottom: 2rem;
  padding: 1.25rem 1.5rem;
  background: rgba(255,255,255,0.015);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.controls label {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: 0.68rem;
  color: var(--fg-faint);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
}
.controls select, .controls input[type="search"] {
  background: transparent;
  color: var(--fg);
  border: 0;
  border-bottom: 1px solid var(--border-strong);
  padding: 0.4rem 0;
  font-size: 0.95rem;
  font-family: inherit;
  min-width: 180px;
  border-radius: 0;
}
.controls select:focus, .controls input:focus {
  outline: none;
  border-bottom-color: var(--accent);
}
/* Selects get a transparent-ish grey fill matching the controls bar */
.controls select {
  background: rgba(255, 255, 255, 0.04);
  padding-left: 0.6rem;
  padding-right: 0.6rem;
}
.controls select option {
  background: var(--bg-elev);
  color: var(--fg);
}

/* News feed */
.news-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 0; }
.news-item {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 2rem;
  align-items: baseline;
}
@media (max-width: 640px) { .news-item { grid-template-columns: 1fr; gap: 0.25rem; } }
.news-item:first-child { padding-top: 0; }
.news-item time {
  color: var(--fg-faint);
  font-size: 0.72rem;
  font-variant-numeric: tabular-nums;
  text-transform: uppercase;
  letter-spacing: 0.2em;
}
.news-item h3 { margin: 0 0 0.4rem; font-size: 1.1rem; font-weight: 600; }
.news-item p { margin: 0; font-size: 0.95rem; }

/* Sponsor tiers */
.sponsor-tier { margin-bottom: 3rem; }
.sponsor-tier h3 {
  color: var(--fg-faint);
  text-transform: uppercase;
  letter-spacing: 0.25em;
  font-size: 0.75rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}
.sponsor-logos {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  align-items: center;
}
.sponsor-logos img { max-height: 70px; filter: grayscale(1) brightness(1.4); opacity: 0.65; transition: filter 0.3s, opacity 0.3s; }
.sponsor-logos img:hover { filter: none; opacity: 1; }

/* Status / empty / loading */
.status {
  padding: 2rem;
  text-align: center;
  color: var(--fg-dim);
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
}
.status.error { color: var(--accent); border-color: rgba(212, 163, 115, 0.45); }
/* a status used as a list item (deadlines / news) shouldn't inherit the list's flex/grid layout */
.deadlines li.status, .news-list li.status { display: block; }

/* Spinner — shown only while loading, never on empty/error states */
.status.loading::before {
  content: "";
  display: block;
  width: 26px;
  height: 26px;
  margin: 0 auto 0.85rem;
  border: 3px solid var(--border-strong);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: statusSpin 0.8s linear infinite;
}
@keyframes statusSpin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .status.loading::before { animation: none; } }

/* Deadlines list */
.deadlines { list-style: none; padding: 0; margin: 0 0 2rem; }
.deadlines li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--border);
}
.deadlines span:first-child {
  color: var(--fg-dim);
  font-size: 0.85rem;
  letter-spacing: 0.03em;
}
.deadlines .date {
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  white-space: nowrap;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
}

/* Form */
.form { display: grid; gap: 1.25rem; max-width: 520px; }
.form label {
  display: grid;
  gap: 0.4rem;
  font-size: 0.7rem;
  color: var(--fg-faint);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-weight: 600;
}
.form input, .form textarea {
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--border-strong);
  color: var(--fg);
  padding: 0.6rem 0;
  font-family: inherit;
  font-size: 1rem;
}
.form input:focus, .form textarea:focus { outline: none; border-color: var(--accent); }
.form textarea { min-height: 130px; resize: vertical; }