:root {
  --faint: var(--line);
  --card: var(--surface);
  --cyan: var(--accent);
  --max-width: var(--content-width);
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
}
.page-shell {
  position: relative;
  min-height: 100svh;
  overflow: clip;
  isolation: isolate;
}
.container {
  width: min(calc(100% - 2 * var(--gutter)), var(--max-width));
  margin-inline: auto;
}
.wave-background {
  position: fixed;
  z-index: 0;
  height: 100dvh;
}
.masthead {
  --accent: var(--brand-blue);
  position: fixed;
  inset: 0 0 auto;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-24);
  width: 100%;
  max-width: none;
  min-height: 120px;
  padding-inline: max(var(--gutter), calc((100vw - var(--max-width)) / 2));
  border-bottom: 1px solid rgba(61, 61, 60, 0.12);
  color: var(--brand-charcoal);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px);
}
.wordmark {
  display: inline-flex;
  align-items: center;
  width: 210px;
  min-width: 0;
  text-decoration: none;
}
.wordmark img {
  display: block;
  width: 100%;
  height: auto;
  transform: scale(1.1);
  transform-origin: left center;
}
.masthead-actions {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  gap: var(--space-16);
}
.event-meta {
  margin: 0;
  font-size: var(--font-small);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.back-link {
  border: 1px solid var(--brand-blue);
  color: var(--brand-blue);
  background: var(--brand-white);
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
  transition:
    color 0.2s ease,
    background 0.2s ease;
}
.back-link:hover,
.back-link:focus-visible {
  color: var(--brand-white);
  background: var(--brand-blue);
}
.register-link {
  color: var(--brand-white);
  background: var(--brand-blue);
}
.register-link:hover,
.register-link:focus-visible {
  background: var(--brand-navy);
}
.content {
  position: relative;
  z-index: 1;
  padding: calc(120px + var(--section-space)) 0 var(--section-space);
}
.kicker {
  margin: 0 0 1rem;
  color: var(--cyan);
  font-size: var(--font-small);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
h1,
h2,
h3,
p {
  margin-top: 0;
}
h1,
h2 {
  margin-bottom: 0;
}
.agenda {
  margin-top: 0;
}
.sponsors {
  margin-top: var(--section-space);
}
.sponsors-heading {
  margin-bottom: var(--space-24);
}
.sponsors-heading .kicker {
  margin-bottom: var(--space-8);
}
.sponsor-wall {
  position: relative;
}
.sponsor-wall-inner {
  position: relative;
}
.sponsor-wall img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
}
.sponsor-link {
  position: absolute;
  z-index: 1;
  top: var(--top);
  left: var(--left);
  width: var(--width);
  height: var(--height);
  border-radius: var(--radius);
  cursor: pointer;
}
.sponsor-link:hover {
  box-shadow: inset 0 0 0 1px rgba(0, 111, 183, 0.35);
}
.section-label {
  margin-bottom: var(--space-32);
}
.section-label .kicker {
  margin-bottom: var(--space-8);
}
.day-switch {
  display: flex;
  flex-wrap: wrap;
  width: fit-content;
  gap: var(--space-8);
  margin-top: var(--space-24);
  border-bottom: 1px solid var(--faint);
}
.day-tabs {
  display: flex;
  gap: var(--space-8);
}
.day-switch-button,
.day-switch-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: var(--control-height);
  padding: var(--space-8) var(--space-16);
  border: 0;
  color: var(--muted);
  background: transparent;
  font: inherit;
  font-size: var(--font-small);
  font-weight: var(--weight-heading);
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
  cursor: pointer;
}
.day-switch-button::after {
  position: absolute;
  right: var(--space-16);
  bottom: -1px;
  left: var(--space-16);
  height: 2px;
  content: "";
  background: transparent;
}
.day-switch-button:hover,
.day-switch-button:focus-visible,
.day-switch-link:hover,
.day-switch-link:focus-visible {
  color: var(--ink);
}
.day-switch-button.is-active {
  color: var(--ink);
}
.day-switch-button.is-active::after {
  background: var(--cyan);
}
.day-schedule {
  display: grid;
  gap: var(--space-16);
  scroll-margin-top: 9rem;
}
.day-schedule + .day-schedule {
  margin-top: var(--space-48);
}
.agenda-list {
  position: relative;
  display: grid;
  gap: var(--space-16);
}
.agenda-list::before {
  position: absolute;
  top: 2.5rem;
  bottom: 1rem;
  left: 125px;
  content: "";
  border-left: 1px solid rgba(0, 111, 183, 0.55);
  pointer-events: none;
}
.talk-card,
.break-row,
.day-heading {
  position: relative;
}
.day-heading {
  display: flex;
  align-items: baseline;
  gap: var(--space-16);
  margin: var(--space-32) 0 var(--space-8);
  padding-left: var(--space-24);
  color: var(--muted);
}
.day-heading time {
  color: var(--ink);
  font-size: var(--font-heading);
  font-weight: var(--weight-heading);
}
.day-heading:first-child {
  margin-top: 0;
}
.talk-card {
  display: grid;
  grid-template-columns: 100px 62px minmax(0, 1fr) auto;
  gap: var(--space-16);
  align-items: center;
  align-content: start;
  padding: var(--space-16) var(--space-24);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
  transition:
    background 0.25s ease,
    border-color 0.25s ease;
}
.talk-card:hover {
  background: var(--brand-navy);
  border-color: var(--accent);
}
:root[data-theme="light"] .talk-card:hover {
  background: var(--surface-alt);
}
:root[data-theme="light"] .side-events-ui .intro {
  --accent: var(--brand-blue);
  color: var(--brand-charcoal);
}
.pitch-card,
.speaker-card {
  cursor: pointer;
}
.pitch-card:focus-visible,
.speaker-card:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}
.pitch-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0.45rem 0 0;
  color: var(--cyan);
  font-size: var(--font-small);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.pitch-toggle::after {
  width: 0.45rem;
  height: 0.45rem;
  content: "";
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translateY(-0.15rem);
  transition: transform 0.2s ease;
}
.pitch-card.is-expanded .pitch-toggle::after {
  transform: rotate(225deg) translate(-0.12rem, -0.12rem);
}
.pitch-list {
  grid-column: 2 / -1;
  margin: 0;
  padding: var(--space-8) 0 var(--space-8) var(--space-24);
  color: var(--muted);
  font-size: var(--font-small);
  line-height: var(--leading-body);
}
.pitch-list li + li {
  margin-top: var(--space-8);
}
.pitch-list strong,
.pitch-list span {
  display: block;
}
.pitch-list strong {
  color: var(--ink);
  font-weight: var(--weight-body);
}
.talk-time {
  color: var(--cyan);
  font-size: var(--font-body);
}
.talk-duration {
  align-self: center;
  justify-self: end;
  color: var(--muted);
  font-size: var(--font-small);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
}
.speaker-portrait {
  position: relative;
  display: grid;
  width: 62px;
  height: 62px;
  place-items: center;
  flex-shrink: 0;
  overflow: hidden;
  border-radius: 50%;
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--font-body);
  letter-spacing: -0.04em;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.32);
}
.speaker-image {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  max-width: 100%;
  height: 100%;
  max-height: 100%;
  object-fit: cover;
  object-position: center;
}
.portrait-blue,
.portrait-pink,
.portrait-violet,
.portrait-cyan {
  background: linear-gradient(145deg, var(--cyan), #14709e 75%);
}
.talk-details h3 {
  margin-bottom: var(--space-8);
  color: var(--ink);
  font-size: var(--font-heading);
  font-weight: var(--weight-body);
  line-height: var(--leading-heading);
}
.talk-details > :last-child {
  margin-bottom: 0;
}
.affiliation {
  color: var(--muted);
}
.speaker {
  margin: 0;
  color: var(--muted);
  font-size: var(--font-heading);
}
.talk-title {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  margin: 0;
  color: var(--muted);
  font-size: var(--font-body);
  line-height: var(--leading-body);
}
.speaker-card .talk-duration {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
}
.speaker-card .talk-duration::before {
  width: 0.45rem;
  height: 0.45rem;
  flex-shrink: 0;
  content: "";
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg) translateY(-0.15rem);
  transition: transform 0.2s ease;
}
.speaker-card.is-expanded .talk-duration::before {
  transform: rotate(225deg) translate(-0.12rem, -0.12rem);
}
.speaker-details {
  grid-column: 3 / -1;
  color: var(--muted);
  font-size: var(--font-small);
  line-height: var(--leading-body);
}
.speaker-details h4 {
  margin: var(--space-8) 0;
  color: var(--ink);
  font-size: var(--font-small);
  font-weight: var(--weight-heading);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.speaker-details p {
  margin-bottom: var(--space-16);
}
.speaker-details p:last-child {
  margin-bottom: 0;
}
.break-row {
  display: grid;
  grid-template-columns: 100px minmax(0, 1fr) auto;
  gap: var(--space-16);
  align-items: center;
  padding: var(--space-16) var(--space-24);
  color: var(--muted);
  font-size: var(--font-body);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.break-row span:first-child {
  color: var(--cyan);
}
.break-row span:nth-child(2) {
  color: var(--ink);
}
.break-row small {
  color: var(--muted);
  font-size: var(--font-small);
  letter-spacing: 0.1em;
  white-space: nowrap;
}
@media (max-width: 900px) {
  .event-meta {
    display: none;
  }
}
@media (max-width: 680px) {
  .masthead {
    width: 100%;
    min-height: 96px;
    padding-inline: var(--gutter);
  }
  .wordmark {
    width: 160px;
  }
  .masthead-actions {
    flex-direction: column;
    align-items: flex-end;
    gap: var(--space-8);
  }
  .register-link {
    display: none;
  }
  .content {
    padding-top: calc(96px + var(--space-24));
  }
  .day-switch {
    margin-top: var(--space-16);
  }
  .talk-card {
    grid-template-columns: 56px 48px minmax(0, 1fr);
    gap: var(--space-8);
    padding: var(--space-16) var(--space-8);
  }
  .break-row {
    grid-template-columns: 56px minmax(0, 1fr) auto;
    gap: var(--space-8);
    padding: var(--space-16) var(--space-8);
  }
  .agenda-list::before {
    left: 65px;
  }
  .talk-time {
    font-size: var(--font-small);
  }
  .talk-duration {
    grid-column: 3;
    grid-row: 1;
    align-self: start;
    justify-self: end;
    margin: 0;
    font-size: var(--font-small);
  }
  .speaker-portrait {
    width: 48px;
    height: 48px;
    font-size: var(--font-small);
  }
  .talk-title {
    font-size: var(--font-small);
  }
  .talk-details {
    grid-column: 3;
    grid-row: 1;
  }
  .talk-details h3 {
    padding-right: 5.5rem;
    overflow-wrap: anywhere;
  }
  .speaker-card.is-expanded .speaker-details {
    grid-row: 2;
  }
  .speaker-details {
    grid-column: 2 / -1;
    font-size: var(--font-small);
  }
  .pitch-list {
    grid-column: 2 / -1;
    padding-left: var(--space-16);
    font-size: var(--font-small);
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}

[hidden] {
  display: none !important;
}
#side-events {
  margin-top: var(--section-space);
  scroll-margin-top: 9rem;
}
#agenda-heading {
  scroll-margin-top: 9rem;
}
body:has(dialog[open]) {
  overflow: hidden;
}
.skip-link {
  position: fixed;
  top: var(--space-8);
  left: var(--space-8);
  padding: var(--space-16);
  color: var(--brand-charcoal);
  background: var(--brand-white);
  z-index: 20;
  transform: translateY(-200%);
}
.skip-link:focus {
  transform: none;
}