.program-page { background: white; color: #1f3442; }

.program-page .navbar .nav-link,
.program-page .navbar .nav-link.active,
.program-page .navbar .nav-link:focus,
.program-page .navbar .nav-link:hover { color: var(--primary-color); text-decoration: none; }

.program-hero {
  align-items: end;
  background: var(--secondary-color-dark-green);
  color: white; display: flex; justify-content: space-between; min-height: 360px; padding: 9rem 3rem 4rem;
}
.program-hero h1 { font-size: clamp(2.2rem, 5vw, 4.2rem); font-weight: 800; letter-spacing: -.04em; margin: .2rem 0; }
.program-hero-meta { align-items: flex-start; display: flex; flex-direction: column; gap: .4rem; }
.program-tag { color: white; display: inline-block; font-size: 1rem; font-weight: 800; letter-spacing: .06em; padding: .18em .45em; text-transform: uppercase; }
.program-tag-blue { background: var(--secondary-color-blue); }
.program-tag-pink { background: var(--secondary-color-pink); font-family: inherit; font-weight: 700; letter-spacing: normal; text-transform: none; }
.program-hero img { height: 90px; width: auto; }

.program-search { background: white; padding: 1.1rem 3rem .45rem; }
.author-search { margin-right: auto; max-width: 560px; }
.author-search label { background: var(--secondary-color-dark-green); color: white; display: inline-block; font-size: .7rem; font-weight: 800; letter-spacing: .06em; margin-bottom: .35rem; padding: .2rem .5rem; text-transform: uppercase; }
.author-search-controls { display: flex; gap: .5rem; }
.author-search input { border: 0; border-left: 5px solid var(--secondary-color-dark-green); border-radius: 0; box-shadow: 0 4px 14px rgba(31,52,66,.1); flex: 1; font-size: .85rem; min-width: 0; padding: .5rem .7rem; }
.author-search input:focus { border-left-color: var(--secondary-color-pink); outline: 2px solid transparent; }
.author-search button { background: var(--secondary-color-pink); border: 0; color: white; cursor: pointer; font-size: .8rem; font-weight: 800; padding: .5rem .9rem; }
.author-search button:hover { background: #e73c71; }
.author-search .search-clear { background: white; box-shadow: inset 0 0 0 1px var(--secondary-color-dark-green); color: var(--secondary-color-dark-green); }
.author-search .search-clear:hover { background: var(--secondary-color-dark-green); color: white; }
.author-search-status { color: #526570; font-size: .75rem; margin: .3rem 0 0; min-height: 1.15em; }

.program-main { padding: 3rem 3rem 6rem; }
.day-tabs { box-sizing: border-box; display: grid; grid-template-columns: repeat(5, 1fr); margin: -.65rem 0 0; overflow-x: auto; padding: .65rem 0; width: 100%; }
.day-tab { background: white; border: 0; box-shadow: 0 7px 9px -6px rgba(31,52,66,.28); color: #111; cursor: pointer; min-width: 130px; padding: 1rem; position: relative; text-align: left; }
.day-tab strong, .day-tab span { display: block; }
.day-tab strong { font-size: 1rem; }
.day-tab span { font-size: .78rem; margin-top: .15rem; }
.day-tab:hover { background: #eef6fb; }
.day-tab.active { background: var(--secondary-color-pink); box-shadow: none; color: white; position: relative; z-index: 2; }
.day-tab.active::after { background: linear-gradient(to bottom, rgba(251,83,135,.5), transparent); bottom: -.65rem; content: ""; height: .65rem; left: 0; pointer-events: none; position: absolute; right: 0; }
.day-tab:focus-visible { outline: 3px solid var(--secondary-color-blue); outline-offset: -3px; }

.schedule { border-top: 0; }
.time-slot { border-bottom: 1px solid #dce3e7; display: grid; gap: 1rem; grid-template-columns: 86px 1fr; padding: 1rem 0; }
.slot-time { color: #111; font-size: .85rem; font-weight: 400; padding-top: 1rem; }
.slot-events { display: grid; gap: .75rem; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.program-event { background: white; border-left: 6px solid var(--secondary-color-blue); box-shadow: 0 4px 14px rgba(31,52,66,.08); display: flex; flex-direction: column; min-height: 100px; padding: 1rem 1.1rem; }
.program-event.keynote { border-color: var(--secondary-color-pink); }
.program-event.workshop { border-color: var(--secondary-color-dark-green); }
.program-event.tutorial { border-color: var(--secondary-color-green); }
.program-event.break, .program-event.lunch { border-color: #111; }
.program-event.break.no-room, .program-event.lunch.no-room, .program-event.walk.no-room { min-height: 0; padding-bottom: .65rem; padding-top: .65rem; }
.program-event.break.no-room h3, .program-event.lunch.no-room h3, .program-event.walk.no-room h3 { margin-bottom: 0; }
.program-event.walk { border-color: #9aa9b0; border-left-style: dashed; }
.program-event.opening, .program-event.event,
.program-event.social { border-color: var(--secondary-color-dark-green); }
.program-event.registration, .program-event.closing { border-color: #111; }
.event-type { align-self: flex-start; color: white; display: inline-block; font-size: .68rem; font-weight: 800; letter-spacing: .08em; margin: 0 0 .55rem; padding: .2rem .5rem; text-transform: uppercase; }
.program-event.tutorial .event-type { background: var(--secondary-color-green); }
.program-event.workshop .event-type { background: var(--secondary-color-dark-green); }
.program-event.keynote .event-type { background: var(--secondary-color-pink); }
.program-event.poster .event-type { background: var(--secondary-color-blue); }
.program-event h3 { font-size: 1.05rem; font-weight: 800; margin: 0 0 .65rem; }
.event-meta { align-items: center; display: flex; flex-wrap: wrap; gap: .35rem .8rem; margin: auto 0 0; padding-top: .8rem; }
.event-room { font-size: .68rem; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; }
.event-authors { color: #111; font-size: .85rem; font-weight: 400; margin: -.15rem 0 .7rem; }
.event-hours { color: #111; font-size: .72rem; font-weight: 400; }
.paper-details { border-top: 1px solid #111; margin-top: 1rem; padding-top: .8rem; }
.paper-details summary { color: var(--secondary-color-blue); cursor: pointer; font-size: .82rem; font-weight: 800; list-style-position: outside; margin-left: 1rem; }
.paper-details summary:hover { text-decoration: underline; text-underline-offset: 3px; }
.paper-list { display: grid; gap: .65rem; grid-template-columns: 1fr; margin-top: 1rem; }
.paper-item { background: #f6f8f9; border-left: 3px solid var(--secondary-color-blue); padding: .8rem .9rem; }
.paper-item .paper-id { color: var(--secondary-color-blue); display: block; font-size: .67rem; font-weight: 800; letter-spacing: .06em; margin-bottom: .25rem; text-transform: uppercase; }
.paper-item h4 { font-size: .9rem; font-weight: 800; line-height: 1.35; margin: 0 0 .3rem; }
.paper-item p { color: #111; font-size: .78rem; font-weight: 400; line-height: 1.4; margin: 0; }
.program-loading, .program-error { padding: 3rem 0; text-align: center; }
.program-no-results { color: #526570; padding: 3rem 0; text-align: center; }
.program-error { color: #9b2448; font-weight: 700; }

@media (min-width: 800px) {
  .paper-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1200px) {
  .paper-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  .program-hero { align-items: start; min-height: 320px; padding: 8rem 2rem 3rem; }
  .program-hero img { display: none; }
  .program-main { padding: 2.5rem 2rem 5rem; }
  .program-search { padding: .8rem 2rem .25rem; }
  .author-search-controls { flex-wrap: wrap; }
  .author-search input { flex-basis: 100%; }
  .day-tabs { grid-template-columns: repeat(5, minmax(125px, 1fr)); }
  .time-slot { grid-template-columns: 60px 1fr; }
  .slot-events { grid-template-columns: 1fr; }
}