/* ========================================================
   AgenticAI4HPC 2026 — workshop page styles
   Every selector is scoped under .aai-page so this file
   cannot affect any other event page on the site.
   The single exception is the Cayman-theme header rule
   below, which is unscoped — but this stylesheet is only
   loaded on this one page, so the rule is page-local.
   ======================================================== */

/* Hide Cayman theme's auto-generated header so we only
   show our custom .aai-hero. Affects only this page since
   this CSS file is linked nowhere else. */
header.page-header { display: none !important; }

/* Cayman caps .main-content at 64rem; widen it for this page. */
.main-content {
  max-width: 1400px !important;
  padding: 1.5rem 1.25rem !important;
}
@media (max-width: 720px) {
  .main-content { padding: 1rem 0.75rem !important; }
}

.aai-page {
  --aai-bg:        #f7f8fc;
  --aai-surface:   #ffffff;
  --aai-text:      #1f2433;
  --aai-muted:     #5b6478;
  --aai-border:    #e4e7ef;
  --aai-accent:    #5b54e6;   /* indigo */
  --aai-accent-2:  #11a8c2;   /* cyan   */
  --aai-accent-3:  #f59e0b;   /* amber  */
  --aai-shadow:    0 4px 14px rgba(20, 28, 60, 0.06);
  --aai-shadow-lg: 0 14px 40px rgba(20, 28, 60, 0.10);
  --aai-radius:    14px;

  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  color: var(--aai-text);
  line-height: 1.65;
  background: var(--aai-bg);
  margin: 0 auto;
  padding: 0 1.25rem 4rem;
  max-width: 1400px;
  font-size: 17px;
}

.aai-page * { box-sizing: border-box; }

.aai-page a {
  color: var(--aai-accent);
  text-decoration: none;
  border-bottom: 1px dashed rgba(91, 84, 230, 0.4);
  transition: color .15s ease, border-color .15s ease;
}
.aai-page a:hover {
  color: var(--aai-accent-2);
  border-bottom-color: var(--aai-accent-2);
}

/* ---------- Hero ---------- */
.aai-page .aai-hero {
  position: relative;
  margin: 1.5rem 0 2.25rem;
  padding: 4rem 2rem 3.5rem;
  border-radius: 20px;
  color: #fff;
  text-align: center;
  overflow: hidden;
  background:
    radial-gradient(1200px 400px at 80% -10%, rgba(255,255,255,.16), transparent 60%),
    radial-gradient(900px 360px at -10% 110%, rgba(255,255,255,.10), transparent 60%),
    linear-gradient(135deg, #2a1f6f 0%, #5b54e6 45%, #11a8c2 100%);
  box-shadow: var(--aai-shadow-lg);
}
.aai-page .aai-hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 38px 38px;
  -webkit-mask-image: radial-gradient(ellipse at center, #000 35%, transparent 75%);
          mask-image: radial-gradient(ellipse at center, #000 35%, transparent 75%);
  pointer-events: none;
}
.aai-page .aai-hero > * { position: relative; }

.aai-page .aai-eyebrow {
  display: inline-block;
  font-size: 1rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  padding: .5rem 1rem;
  background: rgba(255,255,255,.14);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 999px;
  margin-bottom: 1.25rem;
  color: #fff;
  font-weight: 600;
}
.aai-page .aai-hero h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  margin: 0 0 .5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: #fff;
}
.aai-page .aai-hero .aai-subtitle {
  font-size: clamp(1.25rem, 2.6vw, 1.7rem);
  font-weight: 600;
  opacity: .98;
  margin: 0 auto;
  max-width: 950px;
  line-height: 1.25;
}
.aai-page .aai-hero .aai-meta {
  margin-top: 1.75rem;
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  justify-content: center;
}
.aai-page .aai-hero .aai-meta span {
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 999px;
  padding: .55rem 1.15rem;
  font-size: 1.1rem;
  font-weight: 500;
}
.aai-page .aai-hero .aai-meta a {
  color: #fff;
  border-bottom-color: rgba(255,255,255,.5);
}
.aai-page .aai-hero .aai-meta a:hover {
  color: #fff;
  border-bottom-color: #fff;
}

/* ---------- Quick-jump nav ---------- */
.aai-page { scroll-behavior: smooth; }
.aai-page section[id] { scroll-margin-top: 1rem; }

.aai-page .aai-nav {
  background: var(--aai-surface);
  border: 1px solid var(--aai-border);
  border-radius: var(--aai-radius);
  padding: .65rem 1.25rem;
  margin: 0 0 1.5rem;
  box-shadow: var(--aai-shadow);
  display: flex;
  flex-wrap: nowrap;
  gap: .25rem;
  justify-content: space-between;
  align-items: center;
  overflow-x: auto;
  scrollbar-width: thin;
}
.aai-page .aai-nav::-webkit-scrollbar { height: 4px; }
.aai-page .aai-nav::-webkit-scrollbar-thumb { background: var(--aai-border); border-radius: 2px; }

.aai-page .aai-nav a {
  position: relative;
  flex: 0 0 auto;
  padding: .35rem .35rem;
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--aai-muted);
  border-bottom: none;
  white-space: nowrap;
  transition: color .15s ease;
}
.aai-page .aai-nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--aai-accent), var(--aai-accent-2));
  border-radius: 2px;
  transform: translateX(-50%);
  transition: width .22s ease;
}
.aai-page .aai-nav a:hover {
  color: var(--aai-accent);
  border-bottom: none;
}
.aai-page .aai-nav a:hover::after {
  width: calc(100% - .7rem);
}
@media (max-width: 800px) {
  .aai-page .aai-nav { justify-content: flex-start; gap: .8rem; padding: .6rem .8rem; }
  .aai-page .aai-nav a { font-size: .78rem; padding: .35rem .25rem; }
}

/* ---------- Sections ---------- */
.aai-page h2 {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--aai-text);
  margin: 0 0 1rem;
  padding-bottom: .55rem;
  background-image: linear-gradient(90deg, var(--aai-accent), var(--aai-accent-2));
  background-repeat: no-repeat;
  background-size: 64px 3px;
  background-position: 0 100%;
}

.aai-page .aai-section {
  background: var(--aai-surface);
  border: 1px solid var(--aai-border);
  border-radius: var(--aai-radius);
  padding: 1.75rem 1.9rem;
  margin: 0 0 1.5rem;
  box-shadow: var(--aai-shadow);
}
.aai-page .aai-section p { margin: 0 0 .85rem; }
.aai-page .aai-section p:last-child { margin-bottom: 0; }

/* ---------- Topics ---------- */
.aai-page .aai-topics {
  list-style: none;
  padding: 0; margin: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
@media (max-width: 720px) {
  .aai-page .aai-topics { grid-template-columns: 1fr; }
}
.aai-page .aai-topics > li {
  background: linear-gradient(180deg, #fafbff, #ffffff);
  border: 1px solid var(--aai-border);
  border-radius: 12px;
  padding: 1.1rem 1.2rem;
}
.aai-page .aai-topics > li > strong {
  display: block;
  color: var(--aai-accent);
  font-size: 1rem;
  letter-spacing: .01em;
  margin-bottom: .5rem;
}
.aai-page .aai-topics ul {
  list-style: none;
  padding: 0; margin: 0;
}
.aai-page .aai-topics ul li {
  position: relative;
  padding-left: 1.1rem;
  margin: .25rem 0;
  font-size: .96rem;
  color: var(--aai-muted);
}
.aai-page .aai-topics ul li::before {
  content: "";
  position: absolute;
  left: 0; top: .65em;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--aai-accent-2);
}

/* ---------- Program schedule ---------- */
.aai-page .aai-schedule {
  display: grid;
  gap: .55rem;
}
.aai-page .aai-row {
  display: grid;
  grid-template-columns: 175px 1fr;
  gap: 1rem;
  align-items: baseline;
  padding: .7rem .9rem;
  border-radius: 10px;
  background: #fafbff;
  border: 1px solid var(--aai-border);
}
.aai-page .aai-row.aai-break {
  background: #fff7e6;
  border-color: #fde9bf;
  font-style: italic;
  color: var(--aai-muted);
}
.aai-page .aai-row.aai-highlight {
  background: linear-gradient(180deg, #f3f1ff, #fafbff);
  border-color: #d9d4ff;
}
.aai-page .aai-time {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: var(--aai-accent);
}
.aai-page .aai-talk-title { color: var(--aai-text); }

/* ---------- Important dates ---------- */
.aai-page .aai-dates {
  list-style: none;
  padding: 0; margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: .9rem;
}
.aai-page .aai-dates li {
  background: linear-gradient(135deg, #f3f1ff, #e8f7fa);
  border: 1px solid #d9d4ff;
  border-radius: 12px;
  padding: 1rem 1.1rem;
}
.aai-page .aai-dates .aai-label {
  display: block;
  font-size: .8rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--aai-muted);
  margin-bottom: .25rem;
}
.aai-page .aai-dates .aai-date {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--aai-text);
}

/* ---------- People grid ---------- */
.aai-page .aai-people {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: .85rem;
}
.aai-page .aai-people.aai-stack {
  grid-template-columns: 1fr;
}
.aai-page .aai-people.aai-grid-3 {
  grid-template-columns: repeat(3, 1fr);
}
@media (max-width: 900px) {
  .aai-page .aai-people.aai-grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .aai-page .aai-people.aai-grid-3 { grid-template-columns: 1fr; }
}
.aai-page .aai-person {
  background: #fafbff;
  border: 1px solid var(--aai-border);
  border-left: 3px solid var(--aai-accent);
  border-radius: 10px;
  padding: .85rem 1rem;
}
.aai-page .aai-person .aai-name {
  font-weight: 700;
  color: var(--aai-text);
  display: block;
  margin-bottom: .15rem;
}
.aai-page .aai-person .aai-aff {
  font-size: .92rem;
  color: var(--aai-muted);
}
.aai-page .aai-person .aai-mail {
  display: inline-block;
  margin-top: .35rem;
  font-size: .9rem;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

/* ---------- Person card with thumbnail (organizers) ---------- */
.aai-page .aai-person.aai-has-photo {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: .9rem;
  align-items: center;
}
.aai-page .aai-person-photo {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  overflow: hidden;
  background: #ddd;
  border: 2px solid #fff;
  box-shadow: 0 4px 10px rgba(91, 84, 230, 0.18);
  flex-shrink: 0;
}
.aai-page .aai-person-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}
.aai-page .aai-person-info { min-width: 0; }
.aai-page .aai-person-info .aai-mail { word-break: break-all; }

/* ---------- Inline note ---------- */
.aai-page .aai-note {
  background: linear-gradient(135deg, #fff7e6, #fffbf0);
  border: 1px solid #fde9bf;
  border-left: 4px solid var(--aai-accent-3);
  border-radius: 10px;
  padding: .75rem 1rem;
  margin: 0 0 1rem;
  font-size: .95rem;
  color: #5a4a1a;
}
.aai-page .aai-note strong { color: #7a5a0a; }

/* ---------- PC list (card grid, 4 per row) ---------- */
.aai-page .aai-pc-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}
@media (max-width: 1024px) { .aai-page .aai-pc-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 720px)  { .aai-page .aai-pc-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 420px)  { .aai-page .aai-pc-grid { grid-template-columns: 1fr; } }

.aai-page .aai-pc-card {
  background: #fafbff;
  border: 1px solid var(--aai-border);
  border-radius: 12px;
  padding: 1rem .75rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .35rem;
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.aai-page .aai-pc-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--aai-shadow);
  border-color: #d9d4ff;
}
.aai-page .aai-pc-photo {
  width: 84px;
  height: 84px;
  border-radius: 50%;
  overflow: hidden;
  background: #ddd;
  border: 2px solid #fff;
  box-shadow: 0 4px 10px rgba(91, 84, 230, 0.18);
  margin-bottom: .35rem;
}
.aai-page .aai-pc-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}
.aai-page .aai-pc-name {
  font-weight: 700;
  font-size: .95rem;
  color: var(--aai-text);
  line-height: 1.25;
}
.aai-page .aai-pc-aff {
  font-size: .82rem;
  color: var(--aai-muted);
  line-height: 1.3;
}

/* ---------- Speaker cards ---------- */
.aai-page .aai-speaker {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 1.25rem;
  padding: 1.25rem 1.4rem;
  border-radius: 14px;
  background: linear-gradient(135deg, #f3f1ff, #fafbff);
  border: 1px solid #d9d4ff;
  margin-bottom: 1.1rem;
  align-items: start;
}
.aai-page .aai-speaker:last-child { margin-bottom: 0; }

.aai-page .aai-speaker-photo {
  width: 160px;
  height: 160px;
  aspect-ratio: 1 / 1;
  border-radius: 14px;
  overflow: hidden;
  background: #ddd;
  border: 3px solid #fff;
  box-shadow: 0 6px 18px rgba(91, 84, 230, 0.20);
  flex-shrink: 0;
}
.aai-page .aai-speaker-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.aai-page .aai-speaker-body {
  display: flex;
  flex-direction: column;
  gap: .35rem;
}
.aai-page .aai-speaker .aai-tag {
  font-size: .75rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--aai-accent);
  font-weight: 700;
}
.aai-page .aai-speaker .aai-talk {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--aai-text);
  margin: .15rem 0 .35rem;
  line-height: 1.3;
}
.aai-page .aai-speaker .aai-who {
  color: var(--aai-muted);
  font-size: .98rem;
  margin-bottom: .35rem;
}
.aai-page .aai-speaker .aai-bio {
  font-size: .96rem;
  color: #364055;
  margin: 0;
}

@media (max-width: 640px) {
  .aai-page .aai-speaker {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
  }
  .aai-page .aai-speaker-photo { width: 140px; }
  .aai-page .aai-speaker-body { align-items: center; }
}

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .aai-page .aai-hero { padding: 2.5rem 1.25rem 2.25rem; border-radius: 14px; }
  .aai-page .aai-section { padding: 1.25rem 1.1rem; }
  .aai-page .aai-row { grid-template-columns: 1fr; gap: .15rem; }
  .aai-page .aai-time { font-size: .85rem; }
}