/* ============================================================
   School Party — layout & components. Mobile-first.
   Base rules target the narrow viewport; min-width queries only
   ever ADD. No fixed px widths, no horizontal scroll.
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;   /* fixed header no longer reserves space; offset anchor jumps */
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  background: var(--night);
  color: var(--ink);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: var(--step-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;   /* belt-and-braces against a stray wide child */
}

h1, h2, h3, p { margin: 0; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }

:where(a, button, summary):focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

.display { font-family: "Poppins", "Inter", system-ui, sans-serif; }

/* Skip link: off-screen until focused (keyboard users). No inline styles/handlers. */
.skip-link {
  position: absolute;
  left: 1rem;
  top: 1rem;
  z-index: 50;
  transform: translateY(-150%);
  opacity: 0;
  transition: transform var(--dur) var(--ease-out), opacity var(--dur) var(--ease-out);
}
.skip-link:focus {
  transform: translateY(0);
  opacity: 1;
}
@media (prefers-reduced-motion: reduce) {
  .skip-link { transition: none; }
}

/* ---------- Layout primitives ---------- */
.wrap {
  max-inline-size: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section, .hero {
  min-block-size: 90vh;
  display: flex;
  align-items: center;   /* content centred so the tall band reads as deliberate */
}
.section > .wrap, .hero > .wrap { inline-size: 100%; }
.section { padding-block: var(--space-xl); }
.eyebrow {
  display: inline-block;
  font-size: var(--step-eyebrow);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cta-ink);
  background: var(--amber);
  padding: 0.6em 1.1em;
  border-radius: var(--radius-pill);
}
.kicker {
  font-size: var(--step-eyebrow);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--magenta);
  margin-block-end: var(--space-sm);
}

/* ---------- Buttons ---------- */
.btn, .btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
  min-height: 44px;                 /* touch target */
  padding: 0.85em 1.8em;
  font-weight: 700;
  font-size: 1.0625rem;
  border-radius: var(--radius-pill);
  border: 2px solid transparent;
  transition: background var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out);
}
.btn__icon { flex: none; }                                      /* icon inherits text colour via currentColor */
.btn { background: var(--magenta); color: var(--cta-ink); }     /* dark ink: passes 4.5:1 */
.btn:hover { background: #FF4FA3; }
.btn-cyan { background: var(--cyan); color: var(--cta-ink); }
.btn-cyan:hover { background: #59E7EC; }
.btn-ghost { color: var(--ink); border-color: rgba(250, 247, 242, 0.45); }
.btn-ghost:hover { border-color: var(--ink); background: rgba(255, 255, 255, 0.08); }

/* ---------- Colour ring around circle photos ---------- */
.ring {
  display: block;
  aspect-ratio: 1;
  border-radius: 50%;
  overflow: hidden;
  border: var(--ring-width) solid var(--ring, var(--amber));
  box-shadow: 0 0 0 5px var(--night), 0 18px 40px rgba(0, 0, 0, 0.55);
}
.ring img { inline-size: 100%; block-size: 100%; object-fit: cover; }
.r-amber   { --ring: var(--amber); }
.r-magenta { --ring: var(--magenta); }
.r-cyan    { --ring: var(--cyan); }
.r-coral   { --ring: var(--coral); }
.r-violet  { --ring: var(--violet); }

/* ---------- Header / nav ---------- */
.site-header {
  position: fixed;                     /* out of flow: the hero starts flush at the top behind it */
  inset-inline: 0;
  top: 0;
  z-index: 20;
  background: transparent;              /* transparent over the hero at rest */
  border-bottom: 1px solid transparent;
  transition: background var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out);
}
.site-header.is-scrolled {              /* solidifies once the page moves */
  background: rgba(20, 10, 34, 0.82);
  backdrop-filter: blur(10px);
  border-bottom-color: var(--hairline);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  padding-block: 0.75rem;
}
.nav__logo {
  inline-size: 140px;                   /* initial width, matching the proposal */
  block-size: auto;
  transition: inline-size var(--dur) var(--ease-out);
}
.is-scrolled .nav__logo { inline-size: 104px; }   /* eases down as the bar solidifies */
.nav__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  inline-size: 44px;
  block-size: 44px;
  background: none;
  border: 0;
  color: var(--ink);
  cursor: pointer;
}
.nav__toggle svg { inline-size: 26px; block-size: 26px; }
.nav__menu {
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav__menu a { font-weight: 500; }
.nav__menu a:hover { color: var(--link-hover); }
.nav__cta { color: var(--cta-ink) !important; }

/* No-JS or wide screens: the menu is just visible. JS collapses it on mobile. */
.js .nav__menu {
  position: absolute;
  inset-inline: 0;
  top: 100%;
  display: grid;
  gap: var(--space-xs);
  padding: var(--space-md) var(--gutter);
  background: var(--night-2);
  border-bottom: 1px solid var(--hairline);
  clip-path: inset(0 0 100% 0);
  opacity: 0;
  transition: clip-path var(--dur) var(--ease-out), opacity var(--dur) var(--ease-out);
  pointer-events: none;
}
.js .nav[data-open="true"] .nav__menu {
  clip-path: inset(0 0 0 0);
  opacity: 1;
  pointer-events: auto;
}

/* ---------- Hero ---------- */
.hero { position: relative; isolation: isolate; overflow: hidden; padding-block-start: 6rem; }
.hero > .wrap { padding-block: var(--space-xl); }
.hero__bg {
  position: absolute;
  inset: 0;
  inline-size: 100%;
  block-size: 100%;
  object-fit: cover;
  z-index: -2;
}

/* Parallax: only when JS enables it (motion allowed). The backdrop is grown
   and offset so it can translate within its own bounds without exposing edges. */
.parallax-on .hero__bg,
.parallax-on .why__bg {
  block-size: 170%;
  inset-block-start: -35%;
  inset-block-end: auto;
  will-change: transform;
}
.hero__bg-veil {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(120% 90% at 75% 40%, rgba(20,10,34,0) 0%, rgba(20,10,34,0.5) 60%, var(--night) 100%),
    linear-gradient(180deg, rgba(20,10,34,0.55), rgba(20,10,34,0.35) 40%, var(--night));
}
.hero__inner { padding-block: var(--space-xl); }
.hero h1 {
  font-size: var(--step-h1);
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  text-wrap: balance;
  margin-block: var(--space-md) var(--space-md);
  max-inline-size: 15ch;
}
.hero h1 span { color: var(--amber); }
.hero__sub {
  font-size: var(--step-lead);
  color: var(--ink-dim);
  max-inline-size: 42ch;
  text-wrap: pretty;
  margin-block-end: var(--space-lg);
}
.hero__actions { display: flex; flex-wrap: wrap; gap: var(--space-sm); }

/* Cluster of ring photos: a resilient wrapping flex, not an absolute stack.
   Playful overlap via negative margin; degrades cleanly at any width. */
.cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;   /* stop flex from stretching the rings into ovals */
  gap: var(--space-md);
  margin-block-start: var(--space-xl);
}
.cluster .ring { flex: 0 0 auto; inline-size: clamp(9.5rem, 40vw, 15rem); }
.cluster .ring:nth-child(2) { margin-block-start: var(--space-lg); }

/* ---------- About ---------- */
.pull {
  font-size: var(--step-h2);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  text-align: center;
  text-wrap: balance;
  max-inline-size: 20ch;
  margin: 0 auto var(--space-xl);
}
.pull span { color: var(--cyan); }
.about__grid { display: grid; gap: var(--space-lg); }
.about__figure { inline-size: min(20rem, 70%); margin-inline: auto; }
h2 {
  font-size: var(--step-h2);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  text-wrap: balance;
  margin-block-end: var(--space-md);
}
.body { color: var(--ink-dim); max-inline-size: 56ch; text-wrap: pretty; }
.body + .body { margin-block-start: var(--space-sm); }

/* ---------- Why (band over the dance floor) ---------- */
.why { position: relative; isolation: isolate; overflow: hidden; }
.why__bg {
  position: absolute; inset: 0; inline-size: 100%; block-size: 100%;
  object-fit: cover; z-index: -2; filter: brightness(0.34) saturate(1.1);
}
.why__bg::after { content: ""; }
.why-list { list-style: none; margin: var(--space-lg) 0 0; padding: 0; display: grid; gap: var(--space-xs); }
.why-list li { display: flex; gap: var(--space-sm); align-items: center; }
.why-list b {
  flex: none;
  inline-size: 2.75rem; block-size: 2.75rem;
  display: grid; place-items: center;
  border-radius: 50%;
  font-weight: 800; font-size: 1rem;
  color: var(--cta-ink); background: var(--amber);
}
.why-list li:nth-child(2) b { background: var(--magenta); }
.why-list li:nth-child(3) b { background: var(--cyan); }
.why-list li:nth-child(4) b { background: var(--coral); color: var(--cta-ink); }
.why-list li:nth-child(5) b { background: var(--violet); color: var(--bone); }

/* ---------- Team ---------- */
.team__head { text-align: center; margin-block-end: var(--space-xl); }
.team__grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
}
.team-card { text-align: center; }
.team-card .ring { inline-size: min(13.75rem, 60%); margin: 0 auto var(--space-md); }
.team-card h3 { font-size: var(--step-h3); font-weight: 800; letter-spacing: -0.02em; }
.team-card .role { color: var(--cyan); font-weight: 600; margin-block: 0.25rem var(--space-sm); }
.team-card p { color: var(--ink-dim); text-wrap: pretty; }

/* ---------- 33 ---------- */
.crew__grid { display: grid; gap: var(--space-lg); align-items: center; }
.crew__num {
  font-size: var(--step-crew);
  font-weight: 800;
  line-height: 0.84;
  letter-spacing: -0.05em;
  color: var(--amber);
}
.crew__num em { font-style: normal; color: var(--magenta); }
.crew__lead { font-size: var(--step-lead); color: var(--ink-dim); max-inline-size: 24ch; margin-block-start: var(--space-md); }
.crew__roles { display: grid; gap: var(--space-xs); grid-template-columns: 1fr; }
.crew__roles li {
  list-style: none;
  font-weight: 500;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-pill);
  padding: 0.9em 1.4em;
}
.crew__roles { margin: 0; padding: 0; }

/* ---------- Gallery ---------- */
.gallery__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}
.gallery__item { display: block; cursor: zoom-in; border-radius: 50%; }

/* ---------- Lightbox ---------- */
.lightbox {
  /* Fill the viewport so the patterned backdrop is the dialog's own surface;
     clicking it (target === dialog) closes. */
  position: fixed;
  inset: 0;
  max-inline-size: 100%;
  max-block-size: 100%;
  inline-size: 100%;
  block-size: 100%;
  margin: 0;
  padding: var(--space-md);
  border: 0;
  /* "Fondo tramado": dot screen over a near-opaque night ground. */
  background:
    radial-gradient(rgba(255, 255, 255, 0.07) 1.2px, transparent 1.2px) 0 0 / 15px 15px,
    rgba(11, 7, 16, 0.94);
  backdrop-filter: blur(6px);
  /* Centre the image; buttons are absolutely placed over this box. */
  place-items: center;
}
.lightbox[open] { display: grid; }
.lightbox::backdrop { background: transparent; }
.lightbox__img {
  max-inline-size: min(92vw, 1400px);
  max-block-size: 84vh;
  inline-size: auto;
  block-size: auto;
  border-radius: 12px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.6);
  /* the patterned surface shows through padding around the image */
}
.lightbox__btn {
  position: absolute;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  inline-size: 52px;
  block-size: 52px;
  border: 0;
  border-radius: 50%;
  background: rgba(20, 10, 34, 0.72);
  color: var(--ink);
  cursor: pointer;
  transition: background var(--dur) var(--ease-out), transform var(--dur) var(--ease-out);
}
.lightbox__btn:hover { background: var(--magenta); color: var(--cta-ink); }
.lightbox__close { top: var(--space-md); right: var(--space-md); }
.lightbox__prev { left: clamp(0.5rem, 2vw, 2rem); top: 50%; transform: translateY(-50%); }
.lightbox__next { right: clamp(0.5rem, 2vw, 2rem); top: 50%; transform: translateY(-50%); }
.lightbox__prev:hover { transform: translateY(-50%) scale(1.08); }
.lightbox__next:hover { transform: translateY(-50%) scale(1.08); }

@media (prefers-reduced-motion: reduce) {
  .lightbox__btn { transition: none; }
}

/* ---------- CTA ---------- */
.cta { text-align: center; }
.cta h2 { font-size: var(--step-h1); }
.cta p { color: var(--ink-dim); margin-block: var(--space-sm) var(--space-lg); }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--hairline); }
.site-footer .wrap { display: grid; gap: var(--space-sm); padding-block: var(--space-lg); }
.site-footer img { block-size: 3rem; inline-size: auto; }
.site-footer p { color: var(--ink-dimmer); font-size: 0.875rem; }

/* ---------- Reveal on scroll (progressive) ---------- */
@media (prefers-reduced-motion: no-preference) {
  .js .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
  }
  .js .reveal.is-visible { opacity: 1; transform: none; }
}

/* ============================================================
   Enhancements upward. Nothing here is required for the content
   to read — only richer layout as space allows.
   ============================================================ */

@media (min-width: 48rem) {   /* 768px */
  .about__grid { grid-template-columns: 22rem 1fr; align-items: center; }
  .about__figure { inline-size: 100%; }
  .gallery__grid { grid-template-columns: repeat(4, 1fr); gap: var(--space-lg); }
  .why-list { grid-template-columns: 1fr 1fr; gap: var(--space-sm) var(--space-lg); }
}

@media (min-width: 62rem) {   /* 992px — restore the desktop nav */
  .nav__toggle { display: none; }
  .js .nav__menu,
  .nav__menu {
    position: static;
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    padding: 0;
    background: none;
    border: 0;
    clip-path: none;
    opacity: 1;
    pointer-events: auto;
  }
  .hero__inner { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: var(--space-xl); align-items: center; }
  .cluster { margin-block-start: 0; }
  .crew__grid { grid-template-columns: 26rem 1fr; }
  .crew__roles { grid-template-columns: 1fr 1fr; }
}