/* ============================================================
   ACM UEMJ — pages.css
   Section-scoped (s-*) and layout-scoped (l-*) LAYOUT ONLY rules.
   Mobile-first. Never redeclares a component's own visuals
   (background/border/radius/shadow/color/padding) — see the
   naming convention: variants live in components.css as c-*
   modifiers, applied as extra classes in the HTML.
   ============================================================ */

/* ============================================================
   Nav
   ============================================================ */
.c-nav__links-wrap { display: contents; }

.c-nav__toggle { display: flex; margin-left: auto; }

.c-nav__links {
  position: fixed;
  inset: 0 0 0 auto;
  top: 0;
  width: min(320px, 84vw);
  height: 100svh;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: var(--space-6);
  padding: var(--space-9) var(--space-7);
  background: var(--surface-glass-strong);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-left: 1px solid var(--border-hairline);
  transform: translateX(100%);
  transition: transform var(--dur-slow) var(--ease-out);
}
.c-nav__links-wrap.is-open .c-nav__links { transform: translateX(0); }

/* ============================================================
   Hero
   ============================================================ */
.s-hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: var(--space-9);
  padding-bottom: var(--space-8);
}
.s-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  align-items: center;
  width: 100%;
}
.s-hero__content { display: flex; flex-direction: column; align-items: flex-start; gap: var(--space-6); }
.s-hero__headline { font-size: var(--fs-hero); }
.s-hero__headline span { display: block; }
.s-hero__rotate { background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; color: transparent; }
.s-hero__sub { max-width: 52ch; font-size: var(--fs-body-lg); color: var(--slate); }
.s-hero__actions { display: flex; flex-wrap: wrap; gap: var(--space-4); }

.s-hero__constellation {
  width: 100%;
  aspect-ratio: 1 / 1;
  max-width: 480px;
  margin-inline: auto;
}

.s-hero__scroll-cue {
  position: absolute;
  left: 50%;
  bottom: var(--space-6);
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: var(--slate);
  font-family: var(--font-mono);
  font-size: var(--fs-mono-label);
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
}
.s-hero__scroll-cue svg { width: 12px; height: 30px; animation: scroll-bounce 2.2s var(--ease-in-out) infinite; }

/* ============================================================
   Stats
   ============================================================ */
.s-stats {
  border-top: 1px solid var(--border-hairline);
  border-bottom: 1px solid var(--border-hairline);
}
.s-stats__rail {
  display: flex;
  flex-wrap: wrap;
}
.s-stats__item {
  flex: 1 1 100%;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-7) var(--space-5);
  position: relative;
}
.s-stats__item::before {
  content: '';
  position: absolute;
  left: 0; top: 20%;
  height: 60%;
  width: 1px;
  background: var(--border-hairline-strong);
  display: none;
}
.s-stats__label {
  font-size: var(--fs-caption);
  color: var(--slate);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
}

/* ============================================================
   About
   ============================================================ */
.s-about { padding-block: var(--section-pad-y); }
.s-about__title { margin-block: var(--space-4) var(--space-5); max-width: 16ch; }
.s-about__intro { max-width: 60ch; color: var(--slate); font-size: var(--fs-body-lg); margin-bottom: var(--space-8); }

.s-about__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}
.s-about__panel h3 { margin-block: var(--space-3) var(--space-4); font-size: var(--fs-h3); }
.s-about__panel > p { color: var(--slate); }
.s-about__facts { display: flex; flex-direction: column; gap: var(--space-3); margin-top: var(--space-5); }
.s-about__facts li { font-size: var(--fs-small); color: var(--slate); line-height: var(--lh-relaxed); }
.s-about__facts strong { color: var(--bone); }

/* ============================================================
   Divider
   ============================================================ */
.c-divider--yantra { margin-block: 0 var(--space-2); }

/* ============================================================
   Why Join
   ============================================================ */
.s-why { padding-block: var(--section-pad-y); }
.s-why h2 { margin-block: var(--space-4) var(--space-4); max-width: 18ch; }
.s-why__intro { max-width: 56ch; color: var(--slate); font-size: var(--fs-body-lg); margin-bottom: var(--space-8); }

.s-why__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}
.s-why__icon { width: 36px; height: 36px; color: var(--cyan); margin-bottom: var(--space-5); }
.s-why__card h3 { font-size: var(--fs-h4); margin-bottom: var(--space-2); }
.s-why__card p { color: var(--slate); font-size: var(--fs-small); }
.s-why__card--feature h3 { font-size: var(--fs-h3); }
.s-why__card--feature p { font-size: var(--fs-body); max-width: 48ch; }

/* ============================================================
   Domains
   ============================================================ */
.s-domains { padding-block: var(--section-pad-y); }
.s-domains__head { margin-bottom: var(--space-7); }
.s-domains__head h2 { margin-top: var(--space-4); }

.s-domains__rail {
  display: flex;
  gap: var(--space-5);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-inline: var(--container-pad);
  padding-bottom: var(--space-4);
  scrollbar-width: thin;
}
.s-domains__card {
  flex: 0 0 min(78vw, 320px);
  scroll-snap-align: start;
}
.s-domains__icon { width: 40px; height: 40px; color: var(--sandstone); margin-bottom: var(--space-5); }
.s-domains__tag {
  font-family: var(--font-mono);
  font-size: var(--fs-mono-label);
  letter-spacing: var(--ls-wide);
  color: var(--cyan);
  margin-bottom: var(--space-3);
}
.s-domains__card h3 { font-size: var(--fs-h4); margin-bottom: var(--space-2); }
.s-domains__card p { color: var(--slate); font-size: var(--fs-small); }

/* ============================================================
   Events preview
   ============================================================ */
.s-events { padding-block: var(--section-pad-y); }
.s-events h2 { margin-block: var(--space-4) var(--space-8); }

.s-events__grid { display: grid; grid-template-columns: 1fr; gap: var(--space-6); }
.s-events__featured h3 { font-size: var(--fs-h2); margin-block: var(--space-5) var(--space-4); }
.s-events__featured p { color: var(--slate); font-size: var(--fs-body-lg); max-width: 56ch; }
.s-events__featured a { color: var(--cyan); }
.s-events__speaker { display: flex; align-items: center; gap: var(--space-4); margin-top: var(--space-7); }
.s-events__speaker-label { font-size: var(--fs-caption); color: var(--slate); }
.s-events__speaker-name { font-family: var(--font-display); font-size: var(--fs-h4); }

.s-events__rail {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  overflow-x: visible;
}
.s-events__id { font-family: var(--font-mono); font-size: var(--fs-mono-label); color: var(--cyan); letter-spacing: var(--ls-wide); margin-bottom: var(--space-2); }
.c-card--placard h4 { font-size: var(--fs-h4); margin-bottom: var(--space-2); }
.c-card--placard p:not(.s-events__id) { color: var(--slate); font-size: var(--fs-small); }

/* ============================================================
   Chairperson quote
   ============================================================ */
.s-quote {
  padding-block: var(--section-pad-y);
  background: linear-gradient(160deg, var(--maroon), color-mix(in srgb, var(--maroon) 65%, var(--void)));
}
.s-quote__grid { display: flex; flex-direction: column; gap: var(--space-7); align-items: flex-start; }
.s-quote__body { position: relative; }
.s-quote__mark { position: absolute; top: -40px; left: -20px; width: 120px; height: 120px; opacity: .18; color: var(--marigold); z-index: -1; }
.s-quote__text {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--fs-h2);
  line-height: var(--lh-snug);
  max-width: 22ch;
}
.s-quote__author { margin-top: var(--space-6); color: rgba(var(--bone-rgb), .8); }
.s-quote__author strong { color: var(--bone); }

/* ============================================================
   Testimonials
   ============================================================ */
.s-testimonials { padding-block: var(--section-pad-y); }
.s-testimonials h2 { margin-block: var(--space-4) var(--space-8); }
.s-testimonials__grid { display: grid; grid-template-columns: 1fr; gap: var(--space-6); }
.s-testimonials__card p:first-child { font-size: var(--fs-body-lg); line-height: var(--lh-relaxed); margin-bottom: var(--space-5); }
.s-testimonials__author { color: var(--slate); font-size: var(--fs-small); }
.s-testimonials__author strong { color: var(--bone); }

/* ============================================================
   Gallery
   ============================================================ */
.s-gallery { padding-block: var(--section-pad-y); }
.s-gallery h2 { margin-block: var(--space-4) var(--space-8); }
.s-gallery__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}
.c-plate {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-hairline);
  background: var(--dune);
}
.c-plate canvas { width: 100%; height: 100%; }
.c-plate__caption {
  position: absolute;
  left: var(--space-3); bottom: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  letter-spacing: var(--ls-wide);
  color: var(--bone);
  padding: var(--space-1) var(--space-3);
  background: rgba(var(--void-rgb), .55);
  border-radius: var(--radius-sm);
  backdrop-filter: blur(4px);
}

/* ============================================================
   Sponsors
   ============================================================ */
.s-sponsors { padding-block: var(--section-pad-y-tight); }
.s-sponsors > .l-container { margin-bottom: var(--space-7); }
.s-sponsors h2 { margin-top: var(--space-4); }

/* ============================================================
   FAQ
   ============================================================ */
.s-faq { padding-block: var(--section-pad-y); }
.s-faq h2 { margin-block: var(--space-4) var(--space-8); }
.s-faq .l-container { max-width: 820px; }

/* ============================================================
   Contact
   ============================================================ */
.s-contact { padding-block: var(--section-pad-y); }
.s-contact h2 { margin-block: var(--space-4) var(--space-3); max-width: 20ch; }
.s-contact__intro { color: var(--slate); font-size: var(--fs-body-lg); margin-bottom: var(--space-8); max-width: 52ch; }

.s-contact__grid { display: grid; grid-template-columns: 1fr; gap: var(--space-6); }
.s-contact__info { display: flex; flex-direction: column; gap: var(--space-4); }
.s-contact__info h3 { font-size: var(--fs-h4); margin-bottom: var(--space-2); }
.s-contact__info p { color: var(--slate); font-size: var(--fs-small); }
.s-contact__info a { color: var(--cyan); }

.s-contact__map {
  border: 1px solid var(--border-hairline-strong);
  border-radius: var(--radius-lg);
  padding: var(--space-2);
  min-height: 320px;
}
.s-contact__map iframe {
  width: 100%; height: 100%; min-height: 300px;
  border: 0;
  border-radius: var(--radius-md);
  filter: grayscale(.55) contrast(1.05) brightness(.85) invert(.92) hue-rotate(180deg);
}

/* ============================================================
   Footer
   ============================================================ */
.s-footer { padding-top: var(--space-6); }
.s-footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  padding-block: var(--space-8);
}
.s-footer__about { display: flex; flex-direction: column; gap: var(--space-5); }
.s-footer__logo { width: 148px; height: auto; color: var(--bone); }
.s-footer__about p { color: var(--slate); font-size: var(--fs-small); max-width: 42ch; }
.s-footer__socials { display: flex; gap: var(--space-4); }
.s-footer__socials a { color: var(--slate); transition: color var(--dur-fast) var(--ease-out); }
.s-footer__socials a:hover { color: var(--cyan); }

.s-footer h4 { font-size: var(--fs-small); letter-spacing: var(--ls-wide); text-transform: uppercase; color: var(--slate); margin-bottom: var(--space-4); }
.s-footer nav ul { display: flex; flex-direction: column; gap: var(--space-3); }
.s-footer nav a { font-size: var(--fs-small); color: var(--bone); }
.s-footer nav a:hover { color: var(--cyan); }

.s-footer__newsletter-sub { font-size: var(--fs-caption); color: var(--slate); margin-bottom: var(--space-4); }
.s-footer__newsletter-status { font-size: var(--fs-caption); color: var(--cyan); margin-top: var(--space-3); min-height: 1em; }

.s-footer__bottom {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding-block: var(--space-6);
  border-top: 1px solid var(--border-hairline);
  color: var(--slate);
  font-size: var(--fs-caption);
}
.s-footer__bottom a { color: var(--slate); text-decoration: underline; text-underline-offset: 2px; }
.s-footer__bottom a:hover { color: var(--cyan); }