/* ==========================================================================
   Components — reusable UI patterns shared across sections.
   ========================================================================== */

/* ---- Eyebrow / label ---- */

.eyebrow {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-subheading);
  font-size: var(--fs-eyebrow);
  font-weight: 600;
  letter-spacing: var(--ls-eyebrow);
  text-transform: uppercase;
  color: var(--color-blue);
}

.eyebrow--muted {
  color: var(--color-text-muted);
}

/* ---- Buttons ---- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75em 1.5em;
  font-family: var(--font-body);
  font-size: var(--fs-small);
  font-weight: 600;
  letter-spacing: normal;
  text-transform: none;
  border: var(--border-width) solid transparent;
  border-radius: var(--radius);
  white-space: nowrap;
  transition: background-color var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard),
    color var(--duration-fast) var(--ease-standard),
    opacity var(--duration-fast) var(--ease-standard),
    transform var(--duration-fast) var(--ease-standard);
}

.btn:active {
  transform: translateY(1px);
}

.btn--primary {
  background: var(--color-blue);
  color: var(--color-blue-contrast);
  border-color: var(--color-blue);
}

.btn--primary:hover {
  background: color-mix(in srgb, var(--color-blue) 60%, transparent);
}

.btn--secondary {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border-strong);
}

.btn--secondary:hover {
  border-color: var(--color-blue);
  color: var(--color-blue);
}

#committee-trigger:hover {
  background: #212121;
  border-color: var(--color-border-strong);
  color: var(--color-text);
}

.btn--sm {
  padding: 0.6em 1.2em;
  font-size: 0.75rem;
}

.btn--block {
  display: flex;
  width: 100%;
  margin-top: var(--space-7);
  padding-block: 1em;
  font-size: 1rem;
}

/* ---- Logo / brand ---- */

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.01em;
}

.brand__logo {
  height: 28px;
  width: auto;
}

/* ---- Nav toggle (hamburger, built to the Phosphor "List" icon's line
   geometry so the resting glyph matches Phosphor exactly; the three lines
   morph into an "X" on click rather than crossfading between two icons) ---- */

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle__icon {
  width: 24px;
  height: 24px;
  overflow: visible;
}

.nav-toggle__bar {
  fill: none;
  stroke: var(--color-text);
  stroke-width: 1.5;
  stroke-linecap: round;
  transform-box: fill-box;
  transform-origin: center;
  transition: transform var(--duration-fast) var(--ease-standard),
    opacity var(--duration-fast) var(--ease-standard);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar--top {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar--middle {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar--bottom {
  transform: translateY(-6px) rotate(-45deg);
}

/* ---- Nav links ---- */

.site-nav a,
.mobile-nav a {
  color: var(--color-text-muted);
  font-family: var(--font-nav);
  font-size: var(--fs-small);
  font-weight: 500;
  transition: color var(--duration-fast) var(--ease-standard);
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a[aria-current="page"],
.mobile-nav a:hover,
.mobile-nav a[aria-current="page"] {
  color: var(--color-text);
}

.mobile-nav__list a,
.mobile-nav__cta .btn {
  font-size: 1rem;
}

.mobile-nav a:focus-visible {
  outline: none;
}

/* Deliberately excludes :focus-visible — navigation.js moves keyboard focus
   to the first link whenever the panel opens (for accessibility), which is
   unrelated to which page is actually current. Sharing this style with focus
   made that auto-focused link look "active" on every page, and made two
   items appear active at once when the real current page wasn't first. The
   global :focus-visible outline (base.css) still indicates keyboard focus. */
.mobile-nav__list a:hover,
.mobile-nav__list a[aria-current="page"] {
  border-color: var(--color-blue);
  background: linear-gradient(180deg, rgba(46, 91, 255, 0.18), rgba(46, 91, 255, 0.04));
}

.site-nav a {
  position: relative;
  padding-block: var(--space-2);
}

.site-nav a[aria-current="page"]::after {
  right: 0;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 1px;
  background: currentColor;
  transition: right var(--duration-fast) var(--ease-standard);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  right: 0;
}

.site-header .btn,
.mobile-nav .btn {
  font-family: var(--font-nav);
}

/* ---- Section supertitle text block ---- */

.section-head h2 {
  font-size: var(--fs-h2);
}

.section-head p:not(.eyebrow) {
  color: var(--color-text-muted);
  max-width: 42rem;
}

.section-head__caption {
  font-size: var(--fs-small);
  margin-top: var(--space-2);
}

/* ---- Card ---- */

.card {
  padding: var(--space-6);
  background: var(--color-surface-tint);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  height: 100%;
}

.card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3.5rem;
  height: 3.5rem;
  border: var(--border-width) solid var(--color-blue);
  border-radius: 50%;
  color: var(--color-text);
}

.card__icon svg {
  width: 24px;
  height: 24px;
}

.card__title {
  font-size: var(--fs-h3);
}

.card__body {
  color: var(--color-text-muted);
}

/* ---- Stats headline + tagline ---- */

.stats__headline {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 1.2rem + 2.4vw, 3.25rem);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  line-height: 1.15;
}

.stats__tagline {
  font-family: var(--font-subheading);
  font-size: 1.05rem;
  color: var(--color-text-muted);
}

/* ---- Stat item ---- */

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  text-align: center;
}

.stat-item__value {
  font-family: var(--font-body);
  font-size: var(--fs-stat);
  font-weight: 300;
  color: var(--color-text);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.stat-item__label {
  color: var(--color-text-muted);
  font-size: var(--fs-small);
}

/* ---- Hero heading + meta row ---- */

.hero__heading {
  font-family: var(--font-display);
  font-size: var(--fs-h1);
  line-height: var(--lh-tight);
}

.hero__meta-row p {
  font-family: var(--font-subheading);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--color-text);
}

.hero__lead {
  max-width: 34rem;
  font-size: var(--fs-body);
  color: var(--color-text-muted);
}

/* ---- Sponsor tier grid (dedicated sponsors page) ---- */

.sponsor-tier + .sponsor-tier {
  margin-top: var(--space-9);
}

.sponsor-tier__head {
  position: relative;
  max-width: none;
  min-height: clamp(180px, 20vw, 280px);
  overflow: hidden;
  border-radius: var(--radius);
  padding: var(--space-6);
}

.sponsor-tier__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.sponsor-tier__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.sponsor-tier__head > :not(.sponsor-tier__bg) {
  position: relative;
  z-index: 1;
}

.sponsor-tier-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(18rem, 1fr));
  gap: 16px;
  margin-top: var(--space-6);
}

.sponsor-tier-card {
  position: relative;
  display: block;
  aspect-ratio: 308 / 178;
  background: var(--color-surface-tint);
  border-radius: 4px;
  overflow: hidden;
}

.sponsor-tier-card__logo {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

a.sponsor-tier-card:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 2px;
}

.sponsor-tier-card__icon {
  position: absolute;
  top: 12px;
  right: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border: var(--border-width) solid var(--color-blue);
  border-radius: 50%;
  color: var(--color-text);
  background: rgba(0, 0, 0, 0.35);
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity var(--duration-fast) var(--ease-standard), transform var(--duration-fast) var(--ease-standard);
}

a.sponsor-tier-card:hover .sponsor-tier-card__icon,
a.sponsor-tier-card:focus-visible .sponsor-tier-card__icon {
  opacity: 1;
  transform: translateY(0);
}

/* ---- Image placeholder treatment ---- */

.image-placeholder {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(160deg, var(--color-surface), var(--color-surface-raised));
  color: var(--color-text-muted);
  font-size: var(--fs-small);
  padding: var(--space-4);
}

.image-placeholder__label {
  border: var(--border-width) dashed var(--color-border-strong);
  padding: var(--space-3) var(--space-4);
}

/* ---- Accordion (shared: agenda + FAQ) ---- */

.accordion-item {
  background: #121212;
  border-radius: var(--radius);
  overflow: hidden;
}

.accordion-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  width: 100%;
  padding: var(--space-5) var(--space-6);
  text-align: left;
}

.accordion-trigger:hover .accordion-trigger__title {
  color: var(--color-blue);
}

.accordion-icon {
  flex-shrink: 0;
  position: relative;
  width: 2.25rem;
  height: 2.25rem;
  border: var(--border-width) solid var(--color-blue);
  border-radius: var(--radius);
}

.accordion-icon::before,
.accordion-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--color-text);
  transition: transform var(--duration-fast) var(--ease-standard),
    opacity var(--duration-fast) var(--ease-standard);
}

.accordion-icon::before {
  width: 40%;
  height: 1px;
  transform: translate(-50%, -50%);
}

.accordion-icon::after {
  width: 1px;
  height: 40%;
  transform: translate(-50%, -50%);
}

.accordion-trigger[aria-expanded="true"] .accordion-icon::after {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(90deg);
}

/* Height is driven by JS (accordion.js measures scrollHeight on open/close)
   rather than the CSS-only `grid-template-rows: 0fr -> 1fr` trick — that
   technique depends on `min-height: auto` correctly resolving to 0 on the
   grid item, which some mobile browsers don't honor, leaving closed panels
   occupying their full content height. An explicit pixel height has no such
   ambiguity in any browser. */
.accordion-panel {
  height: 0;
  overflow: hidden;
  transition: height var(--duration-base) var(--ease-standard);
}

.accordion-panel__inner {
  overflow: hidden;
}

.accordion-panel__content {
  padding: 0 var(--space-6) var(--space-5);
  color: #ababab;
}

.accordion-panel__content p + p {
  margin-top: var(--space-3);
}

.accordion-panel__content a {
  color: var(--color-blue);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.accordion-panel__content a:hover {
  color: var(--color-text);
}

.accordion-panel__focus {
  color: var(--color-text);
}

/* Trigger content: shared between agenda and FAQ items */
.accordion-badge {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  background: var(--color-blue);
  color: var(--color-blue-contrast);
  font-family: var(--font-subheading);
  font-size: 0.8125rem;
  font-weight: 600;
  white-space: nowrap;
  padding: 0.4em 0.75em;
  border-radius: 2px;
}

.accordion-trigger__main {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2) var(--space-5);
  flex: 1;
  min-width: 0;
}

.accordion-trigger__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.375rem;
  flex: 1 1 12rem;
  min-width: 0;
}


/* ---- Speaker card ---- */

.speaker-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  border-radius: var(--radius);
  overflow: hidden;
}

.speaker-card__footer {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  flex: 1;
  gap: var(--space-2);
  background: #121212;
  padding: var(--space-4) var(--space-5);
  transition: background-color var(--duration-fast) var(--ease-standard);
}

.speaker-card:hover .speaker-card__footer,
.speaker-card:focus-within .speaker-card__footer {
  background: var(--color-blue);
}

.speaker-card:hover .speaker-card__title,
.speaker-card:focus-within .speaker-card__title {
  color: var(--color-text);
}

.speaker-card__name {
  font-family: var(--font-subheading);
  font-size: 1.3rem;
  font-weight: 500;
  line-height: 1.3;
}

.speaker-card__title {
  color: var(--color-text-muted);
  font-size: var(--fs-small);
  transition: color var(--duration-fast) var(--ease-standard);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.speaker-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-small);
  color: var(--color-blue);
  margin-top: var(--space-1);
}

.badge {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-blue);
  border: var(--border-width) solid var(--color-blue);
  padding: 0.2em 0.6em;
}

/* ---- Sponsor marquee ---- */
/* Each sponsor logo SVG is a self-contained tile (translucent card
   background + logo + name baked in), so it's rendered as-is at its
   natural aspect ratio — no extra card chrome or hover filters needed. */

/* Edge fade is a solid gradient overlay rather than mask-image — Safari has
   a known bug where mask-image on an animated element can render the whole
   element blank (reliably reproduced on iOS Safari with two masked
   marquees stacked: the first renders empty, the second is fine). This
   avoids the mask entirely so it can't hit that bug in any browser. */
.sponsor-marquee {
  position: relative;
  overflow: hidden;
  width: 100%;
}

.sponsor-marquee::before,
.sponsor-marquee::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 8%;
  min-width: 24px;
  z-index: 1;
  pointer-events: none;
}

.sponsor-marquee::before {
  left: 0;
  background: linear-gradient(to right, var(--color-bg), transparent);
}

.sponsor-marquee::after {
  right: 0;
  background: linear-gradient(to left, var(--color-bg), transparent);
}

/* Scroll is driven by JS (marquee.js) via requestAnimationFrame + inline
   transform, not a CSS animation — see marquee.js for why. */
.sponsor-marquee__track {
  display: flex;
  align-items: center;
  gap: 12px;
  width: max-content;
  will-change: transform;
}

.sponsor-marquee__group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sponsor-logo {
  flex-shrink: 0;
  display: block;
}

.sponsor-logo img {
  display: block;
  height: 12rem;
  width: auto;
}

@media (max-width: 40em) {
  .sponsor-logo img {
    height: 8.5rem;
  }
}

/* ---- Media fade (background video/image edge fades) ---- */

.media-fade {
  position: absolute;
  left: 0;
  right: 0;
  height: 40%;
  pointer-events: none;
}

.media-fade--top {
  top: 0;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 1) 0%, rgba(0, 0, 0, 0) 100%);
}

.media-fade--bottom {
  bottom: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 1) 0%, rgba(0, 0, 0, 0) 100%);
}

/* ---- Letter reveal (decorative statement text) ---- */

.reveal-letters .letter {
  display: inline-block;
  opacity: 0;
  transform: translateY(0.35em);
}

.reveal-letters.is-revealed .letter {
  animation: letter-reveal 0.6s var(--ease-standard) forwards;
}

@keyframes letter-reveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal-letters .letter {
    opacity: 1;
    transform: none;
  }
}


/* ---- Modal (Committee members) ---- */

.modal {
  border: none;
  border-radius: var(--radius);
  background: #121212;
  color: var(--color-text);
  padding: var(--space-6);
  width: min(32rem, calc(100vw - 2.5rem));
  height: fit-content;
  max-height: calc(100vh - 4rem);
  overflow-y: auto;
}

.modal::backdrop {
  background: rgba(0, 0, 0, 0.7);
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.modal__title {
  font-size: var(--fs-h3);
}

.modal__close {
  position: relative;
  display: inline-flex;
  width: 2.25rem;
  height: 2.25rem;
  flex-shrink: 0;
  border: var(--border-width) solid #ababab;
  border-radius: var(--radius);
  transition: border-color var(--duration-fast) var(--ease-standard);
}

.modal__close:hover {
  border-color: var(--color-blue);
}

.modal__close::before,
.modal__close::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 45%;
  height: 1px;
  background: var(--color-text);
}

.modal__close::before {
  transform: translate(-50%, -50%) rotate(45deg);
}

.modal__close::after {
  transform: translate(-50%, -50%) rotate(-45deg);
}

.modal__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.modal__list li {
  display: flex;
  flex-direction: column;
  padding-bottom: var(--space-4);
  border-bottom: var(--border-width) solid var(--color-border);
}

.modal__list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.modal__list-name {
  font-weight: 500;
}

.modal__list-role {
  color: var(--color-text-muted);
  font-size: var(--fs-small);
}

/* ---- State messages (loading / error / empty) ---- */

.state-message {
  padding: var(--space-6) 0;
  color: var(--color-text-muted);
  font-size: var(--fs-small);
}

.state-message--error {
  color: #ff8b8b;
}