/* Shared agenda styles for the homepage and full program. */
.sched { --track-research: var(--blue); --track-shared: var(--teal); --flag: #9a3d28; --flag-bg: #f7eae5; --flag-border: #e3c4b8; }
  /* Day header */
  .day-head { display: flex; flex-wrap: wrap; align-items: baseline;
              justify-content: space-between; gap: .75rem;
              padding-bottom: .7rem; margin-bottom: .35rem;
              border-bottom: 2px solid var(--navy); }
  .day-head h2, .day-head h3 { margin: 0; padding: 0; border: 0; }
  .day-head h2::after { display: none; }
  .day-head .day-zone { font-size: .78rem; font-weight: 700; color: var(--muted);
              letter-spacing: .06em; text-transform: uppercase; }

  /* Schedule */
  .sched { display: flex; flex-direction: column; }
  .slot { display: grid; grid-template-columns: 7.75rem minmax(0, 1fr);
          gap: 0 1.5rem; padding: 1.3rem 0; border-bottom: 1px solid var(--border); }
  .slot:last-child { border-bottom: 0; padding-bottom: 0; }
  .slot-time { font-size: .88rem; font-weight: 700; color: var(--orange);
               font-variant-numeric: tabular-nums; white-space: nowrap;
               padding-top: .1rem; }
  .slot-what { min-width: 0; }
  .slot-what h3 { font-size: 1.08rem; font-weight: 700; color: var(--navy);
                  margin: 0 0 .2rem; letter-spacing: -.015em; text-wrap: balance; }
  .slot-who { font-size: .85rem; color: var(--muted); margin: 0 !important; }
  .slot.break { padding: .85rem 0; }
  .slot.break .slot-time { color: var(--muted); font-weight: 600; }
  .slot.break .slot-what h3 { font-size: .95rem; font-weight: 600; color: var(--muted); }
  .slot-gap { margin: .8rem 0 0 !important; font-size: .88rem; }

  /* Talks */
  .talks { display: flex; flex-direction: column; gap: .7rem; margin-top: 1rem; }
  .talk { background: var(--card); border: 1px solid var(--border);
          border-left: 3px solid var(--border); border-radius: 14px;
          padding: 1rem 1.15rem; min-width: 0;
          transition: box-shadow .18s ease, border-color .18s ease; }
  .talk:hover { box-shadow: 0 6px 20px rgba(34,43,64,.07); }
  .talk.research { border-left-color: var(--track-research); }
  .talk.shared { border-left-color: var(--track-shared); }
  .talk.keynote-talk-card { border-left-color: var(--orange); background: #faf6f1; }
  .talk-head { display: flex; flex-wrap: wrap; align-items: flex-start;
               justify-content: space-between; gap: .5rem 1rem; }
  .talk-head h4 { font-family: Georgia, "Times New Roman", serif;
                  font-size: 1.05rem; font-weight: 400; line-height: 1.32;
                  color: var(--navy); margin: 0; flex: 1 1 18rem; min-width: 0;
                  text-wrap: balance; }
  .talk-tags { display: flex; flex-wrap: wrap; gap: .3rem; flex-shrink: 0; }
  .talk-logo { height: 30px; width: auto; flex-shrink: 0; margin-top: .1rem; }
  .talk-authors { font-size: .88rem; color: #343742; margin: .5rem 0 0 !important; }
  .talk-authors strong { color: var(--navy); }
  .talk-meta { font-size: .78rem; color: var(--muted); margin: .25rem 0 0 !important; }
  .pid { display: inline-block; font-size: .7rem; font-weight: 600;
         letter-spacing: .02em; color: #3c5a84; background: #edf1f7;
         border-radius: 6px; padding: .1rem .42rem; margin-right: .1rem;
         font-variant-numeric: tabular-nums; }

  .talk-flag { font-size: .84rem; margin: .65rem 0 0 !important;
               padding: .6rem .8rem; border-radius: 9px;
               background: var(--flag-bg); border: 1px solid var(--flag-border);
               border-left: 3px solid var(--flag); color: #4a2a1f; }

  /* Tags */
  .tag-remote { background: #e8f0fb; color: #1755a8; border: 1px solid #b8cff5; }
  .tag-inperson { background: #edf7f0; color: #1e7a40; border: 1px solid #a8dbb8; }
  .tag-pending { background: #f5f5f3; color: #6b6b63; border: 1px solid #d8d8d0; }
  .tag-flag { background: #f7eae5; color: var(--flag); border: 1px solid var(--flag-border); }
  .tag-gap { background: #fdf3d9; color: #8a6414; border: 1px solid #ecd9a0;
             margin-right: .35rem; }

  /* Abstracts */
  .abs { margin-top: .7rem; border-top: 1px solid var(--border); padding-top: .55rem; }
  .abs + .abs { border-top: 1px solid var(--border); }
  .abs > summary { cursor: pointer; font-size: .76rem; font-weight: 600;
                   letter-spacing: .05em; color: var(--muted); list-style: none;
                   display: inline-flex; align-items: center; gap: .4rem;
                   padding: .3rem .7rem .3rem .5rem; margin-left: -.25rem;
                   border-radius: 999px; transition: background .16s, color .16s; }
  .abs > summary::-webkit-details-marker { display: none; }
  .abs-chev { width: .8rem; height: .8rem; flex-shrink: 0; color: var(--blue);
                   transition: transform .18s ease; }
  .abs[open] .abs-chev { transform: rotate(90deg); }
  .abs > summary:hover { color: var(--navy); background: #efeae2; }
  .abs > summary:focus-visible { outline: 2px solid var(--blue);
                   outline-offset: 2px; }
  .abs-body { padding-top: .55rem; }
  .abs-body p { font-size: .88rem; line-height: 1.68; margin: 0 0 .7rem !important; }
  .abs-body p:last-child { margin-bottom: 0 !important; }
  .abs-note { color: var(--muted); font-style: italic; }
  /* The keynote abstract is a full position-paper abstract: contain it. */
  .abs-scroll { max-height: 20rem; overflow-y: auto; scrollbar-gutter: stable;
                padding: .15rem .9rem .15rem 1rem; margin-top: .3rem;
                border-left: 2px solid var(--border);
                box-shadow: inset 0 -14px 12px -12px rgba(34,43,64,.16); }
  .abs-scroll:focus-visible { outline: 3px solid rgba(183,98,71,.32);
                outline-offset: 3px; border-radius: 4px; }
  .abs-missing { font-size: .85rem; margin: .7rem 0 0 !important;
                 padding-top: .55rem; border-top: 1px solid var(--border);
                 color: var(--muted); }

  /* Time-zone table */
  .zones-wrap { overflow-x: auto; }
  .zones { width: 100%; min-width: 34rem; border-collapse: separate; border-spacing: 0;
           margin: 1rem 0; font-size: .86rem; border: 1px solid var(--border);
           border-radius: 12px; overflow: hidden; }
  .zones th, .zones td { padding: .55rem .8rem; text-align: left;
           border-bottom: 1px solid var(--border); }
  .zones thead th { background: #efeae2; font-size: .7rem; font-weight: 800;
           letter-spacing: .07em; text-transform: uppercase; color: var(--muted); }
  .zones tbody tr:last-child td { border-bottom: 0; }
  .zones td.num { font-variant-numeric: tabular-nums; font-weight: 700;
           color: var(--navy); white-space: nowrap; }
  .zones tr.row-flag td { background: var(--flag-bg); }
  .zones tr.row-flag td.num:last-child { color: var(--flag); }

  /* Gap checklist */
  .gaps { list-style: none; padding: 0 !important; margin: .5rem 0 0; }
  .gaps li { display: grid; grid-template-columns: auto minmax(0, 1fr);
             gap: .2rem .7rem; padding: .7rem 0;
             border-bottom: 1px solid var(--border); }
  .gaps li:last-child { border-bottom: 0; }
  .gaps .who { font-weight: 700; color: var(--navy); font-size: .9rem;
               grid-column: 1 / -1; }
  .gaps .what { grid-column: 1 / -1; font-size: .87rem; color: #343742; }

  @media (max-width: 680px) {
    .slot { grid-template-columns: 1fr; gap: .35rem; }
    .slot-time { font-size: .82rem; }
    .talk-head h4 { flex-basis: 100%; }
  }
  @media (prefers-reduced-motion: reduce) {
    .abs-chev, .abs > summary, .talk { transition: none; }
  }