/* ============================================================
   STEM Spark Initiative design system
   Mood: warm & handcrafted. Ink-on-cream, hand-cut sticker
   shapes, wavy dividers, rotated photos, doodle underlines.
   Palette sampled directly from the org's lightbulb logo.
   ============================================================ */

:root {
  /* --- logo-sampled palette --- */
  --blue: #0568ac;       /* cobalt, bulb base / "STEM" wordmark */
  --sky: #33b2df;        /* bulb outline, top */
  --teal: #3fb89b;       /* bulb outline, bottom / "Spark" wordmark */
  --green: #59b747;      /* bulb base cap */
  --amber: #fab71e;      /* gear + light rays */

  /* --- paper & ink --- */
  --cream: #f8efdd;
  --paper: #fffbf2;
  --paper-dim: #f1e7d2;
  --ink: #202a2f;
  --ink-soft: #4a5459;

  /* --- type --- */
  --font-display: "Lilita One", system-ui, sans-serif;
  --font-accent: "Caveat", cursive;
  --font-body: "Bitter", Georgia, "Times New Roman", serif;

  --radius-sticker: 255px 15px 225px 15px / 15px 225px 15px 255px;
  --radius-sticker-2: 20px 250px 20px 250px / 250px 20px 250px 20px;
  --shadow-hard: 6px 6px 0 var(--ink);
  --shadow-hard-sm: 4px 4px 0 var(--ink);

  --wrap: 1180px;
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body, h1, h2, h3, h4, p, figure, blockquote, ul, ol, dl { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; background: none; border: none; cursor: pointer; color: inherit; }
svg { fill: currentColor; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: 1rem; top: -60px; background: var(--ink); color: var(--paper);
  padding: .6rem 1rem; border-radius: 8px; z-index: 200; transition: top .15s ease;
}
.skip-link:focus { top: 1rem; }

/* ---------- base ---------- */
body {
  font-family: var(--font-body);
  background: var(--cream);
  color: var(--ink);
  font-size: 17px;
  line-height: 1.6;
  position: relative;
}

/* subtle paper grain, everywhere */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  opacity: 0.045;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-pad { padding-top: 4.5rem; padding-bottom: 4.5rem; }
@media (max-width: 640px) { .section-pad { padding-top: 3rem; padding-bottom: 3rem; } }

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 400; line-height: 1.15; letter-spacing: .01em; }

.h1 { font-size: clamp(2.4rem, 5.5vw, 4.2rem); }
.h2 { font-size: clamp(1.9rem, 4vw, 2.8rem); }
.h3 { font-size: clamp(1.3rem, 2.4vw, 1.7rem); }

.lead { font-size: 1.2rem; color: var(--ink-soft); max-width: 60ch; }

.eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: var(--font-accent); font-weight: 700; font-size: 1.35rem;
  color: var(--blue);
}
.eyebrow svg { width: 1.1rem; height: 1.1rem; color: var(--amber); }

.accent { font-family: var(--font-accent); font-weight: 700; }
.accent--blue { color: var(--blue); }
.accent--teal { color: var(--teal); }
.accent--amber { color: var(--amber); }

.underline-svg {
  display: block;
  width: 100%;
  height: .5em;
  margin-top: -.15em;
  color: var(--amber);
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-display);
  font-size: 1rem;
  padding: .85rem 1.6rem;
  border: 2.5px solid var(--ink);
  border-radius: var(--radius-sticker);
  box-shadow: var(--shadow-hard-sm);
  background: var(--paper);
  color: var(--ink);
  transition: transform .15s ease, box-shadow .15s ease;
  white-space: nowrap;
}
.btn:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--ink); }
.btn:active { transform: translate(1px, 1px); box-shadow: 2px 2px 0 var(--ink); }

.btn--primary { background: var(--amber); }
.btn--blue { background: var(--sky); color: var(--paper); border-color: var(--ink); }
.btn--teal { background: var(--teal); color: var(--paper); }
.btn--outline { background: transparent; }
.btn--donate { background: var(--green); color: var(--paper); }
.btn--lg { padding: 1.05rem 2.1rem; font-size: 1.15rem; }
.btn--block { width: 100%; justify-content: center; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--cream);
  border-bottom: 2.5px solid var(--ink);
}
.site-header__row {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: .85rem; padding-bottom: .85rem;
  gap: 1rem;
}
.brand { display: flex; align-items: center; gap: .6rem; }
.brand__mark { width: 42px; height: 42px; flex-shrink: 0; }
.brand__word {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--blue);
  letter-spacing: .01em;
}
.brand__word em { font-style: normal; color: var(--teal); }

.primary-nav {
  display: flex; align-items: center; gap: 1.6rem;
}
.primary-nav__list { display: flex; align-items: center; gap: 1.4rem; }
.nav-link {
  font-family: var(--font-display);
  font-size: .92rem;
  padding: .3rem .1rem;
  position: relative;
  color: var(--ink);
}
.nav-link::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -3px; height: 4px;
  background: var(--amber); border-radius: 3px;
  transform: scaleX(0); transform-origin: left;
  transition: transform .18s ease;
}
.nav-link:hover::after, .nav-link.is-active::after { transform: scaleX(1); }
.nav-link.is-active { color: var(--blue); }

.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: .4rem; }
.nav-toggle__box { width: 26px; height: 20px; position: relative; display: block; }
.nav-toggle__box span, .nav-toggle__box::before, .nav-toggle__box::after {
  content: ""; position: absolute; left: 0; right: 0; height: 3px; background: var(--ink); border-radius: 2px;
  transition: transform .2s ease, opacity .2s ease, top .2s ease;
}
.nav-toggle__box::before { top: 0; }
.nav-toggle__box span { top: 8.5px; }
.nav-toggle__box::after { top: 17px; }
.nav-toggle.is-open .nav-toggle__box::before { top: 8.5px; transform: rotate(45deg); }
.nav-toggle.is-open .nav-toggle__box span { opacity: 0; }
.nav-toggle.is-open .nav-toggle__box::after { top: 8.5px; transform: rotate(-45deg); }

@media (max-width: 880px) {
  .nav-toggle { display: flex; }
  .primary-nav {
    position: fixed; inset: 0; top: 73px;
    background: var(--cream);
    flex-direction: column; align-items: stretch; justify-content: flex-start;
    padding: 2rem 1.5rem;
    transform: translateX(100%);
    transition: transform .25s ease;
    gap: 2rem;
  }
  .primary-nav.is-open { transform: translateX(0); }
  .primary-nav__list { flex-direction: column; align-items: flex-start; gap: 1.1rem; }
  .nav-link { font-size: 1.4rem; }
  .btn--donate { align-self: flex-start; }
}

/* ---------- hero blobs / decoration ---------- */
.blob-decor {
  position: absolute;
  z-index: -1;
  opacity: .9;
}

.spark-cluster {
  position: absolute;
  display: flex;
  gap: .6rem;
  align-items: center;
  z-index: 2;
}

.hero {
  position: relative;
  overflow: hidden;
  padding-top: 4rem;
  padding-bottom: 5rem;
}
.hero__grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 3rem;
  align-items: center;
}
@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; }
}
.hero__art { position: relative; }
.hero__quote {
  margin-top: 1.6rem;
  font-family: var(--font-accent);
  font-size: 1.5rem;
  color: var(--blue);
  transform: rotate(-1.2deg);
}
.hero__cta-row { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 2rem; }

.photo-frame {
  position: relative;
  border: 3px solid var(--ink);
  border-radius: var(--radius-sticker-2);
  overflow: hidden;
  box-shadow: 8px 8px 0 var(--teal);
  transform: rotate(-1.6deg);
}
.photo-frame img { width: 100%; height: 100%; object-fit: cover; }
.photo-frame.tilt-r { transform: rotate(2deg); box-shadow: 8px 8px 0 var(--amber); }

/* ---------- wavy divider between sections ---------- */
.wavy-divider { display: block; width: 100%; height: 56px; margin-bottom: -1px; }
.wavy-divider path { stroke: none; }

/* ---------- section band backgrounds ---------- */
.band { position: relative; }
.band--paper { background: var(--paper); }
.band--blue { background: var(--blue); color: var(--paper); }
.band--blue h2, .band--blue h1 { color: var(--paper); }
.band--blue .quote-block p { color: var(--cream); }
.band--teal .quote-block p { color: var(--ink); }
.band--teal { background: var(--teal); color: var(--paper); }
.band--cream { background: var(--cream); }
.band--dim { background: var(--paper-dim); }

/* ---------- cards ---------- */
.card-grid { display: grid; gap: 1.75rem; }
.card-grid--3 { grid-template-columns: repeat(3, 1fr); }
.card-grid--2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 820px) {
  .card-grid--3, .card-grid--2 { grid-template-columns: 1fr; }
}

.card {
  background: var(--paper);
  border: 2.5px solid var(--ink);
  border-radius: 22px;
  padding: 1.8rem;
  box-shadow: var(--shadow-hard);
  position: relative;
}
.card__icon {
  width: 3rem; height: 3rem;
  display: grid; place-items: center;
  border-radius: 50%;
  border: 2.5px solid var(--ink);
  margin-bottom: 1rem;
}
.card__icon svg { width: 1.5rem; height: 1.5rem; }

.tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: .78rem;
  padding: .3rem .7rem;
  border-radius: 999px;
  border: 2px solid var(--ink);
  background: var(--amber);
  transform: rotate(-2deg);
}

/* ---------- stat badges ---------- */
.stat-row { display: flex; flex-wrap: wrap; gap: 1.4rem; margin-top: 2rem; }
.stat {
  background: var(--paper);
  border: 2.5px solid var(--ink);
  border-radius: 50%;
  width: 132px; height: 132px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center;
  box-shadow: var(--shadow-hard-sm);
}
.stat:nth-child(2) { transform: rotate(-3deg); }
.stat:nth-child(3) { transform: rotate(2.5deg); }
.stat__num { font-family: var(--font-display); font-size: 1.5rem; color: var(--blue); }
.stat__label { font-size: .72rem; color: var(--ink-soft); padding: 0 .5rem; }

/* ---------- team ---------- */
.team-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2.2rem; }
@media (max-width: 760px) { .team-grid { grid-template-columns: 1fr; } }
.team-card { text-align: center; }
.team-avatar {
  width: 150px; height: 150px; margin: 0 auto 1.2rem;
  display: grid; place-items: center;
  border: 3px solid var(--ink);
  font-family: var(--font-display);
  font-size: 2.2rem;
  color: var(--paper);
}
.team-avatar.blob-a { border-radius: 62% 38% 58% 42% / 41% 55% 45% 59%; background: var(--blue); }
.team-avatar.blob-b { border-radius: 45% 55% 40% 60% / 60% 45% 55% 40%; background: var(--teal); }
.team-avatar.blob-c { border-radius: 58% 42% 63% 37% / 45% 60% 40% 55%; background: var(--amber); color: var(--ink); }
.team-avatar.has-photo { overflow: hidden; padding: 0; }
.team-avatar.has-photo img { width: 100%; height: 100%; object-fit: cover; border-radius: inherit; }
.team-card__name { font-family: var(--font-display); font-size: 1.25rem; margin-top: .3rem; }
.team-card__title { font-family: var(--font-accent); font-size: 1.15rem; color: var(--blue); }
.team-card__bio { margin-top: .6rem; font-size: .95rem; color: var(--ink-soft); }

.placeholder-note {
  display: inline-flex; align-items: center; gap: .4rem;
  font-size: .78rem; font-style: italic; color: var(--ink-soft);
  border: 1.5px dashed var(--ink-soft); border-radius: 999px;
  padding: .25rem .7rem; margin-top: .6rem;
}

/* ---------- polaroid gallery ---------- */
.gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2.5rem; margin-top: 2.5rem; }
@media (max-width: 700px) { .gallery { grid-template-columns: 1fr; } }
.polaroid {
  background: var(--paper);
  border: 2.5px solid var(--ink);
  padding: .9rem .9rem 1.6rem;
  box-shadow: var(--shadow-hard);
  transform: rotate(-2deg);
}
.polaroid:nth-child(2) { transform: rotate(1.8deg); }
.polaroid:nth-child(3) { transform: rotate(1.4deg); }
.polaroid:nth-child(4) { transform: rotate(-1.6deg); }
.polaroid img { border: 1.5px solid var(--ink); }
.polaroid__cap { font-family: var(--font-accent); font-size: 1.2rem; margin-top: .7rem; text-align: center; color: var(--blue); }
.tape {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%) rotate(-3deg);
  width: 70px; height: 26px;
  background: rgba(250, 183, 30, .55);
  border: 1px solid rgba(32,42,47,.25);
}

/* ---------- empty state ---------- */
.empty-state {
  border: 2.5px dashed var(--ink-soft);
  border-radius: 26px;
  padding: 3rem 2rem;
  text-align: center;
  background: var(--paper);
}

/* ---------- quote block ---------- */
.quote-block {
  max-width: 46rem; margin: 0 auto; text-align: center;
}
.quote-block p {
  font-family: var(--font-accent);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  color: var(--blue);
  line-height: 1.3;
}
.quote-block cite { display: block; margin-top: 1rem; font-style: normal; color: var(--ink-soft); font-family: var(--font-body); }

/* ---------- forms ---------- */
.form-field { display: flex; flex-direction: column; gap: .4rem; margin-bottom: 1.3rem; }
.form-field label { font-family: var(--font-display); font-size: .85rem; }
.form-field input, .form-field textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: .8rem 1rem;
  border: 2.5px solid var(--ink);
  border-radius: 14px;
  background: var(--paper);
  color: var(--ink);
}
.form-field input:focus, .form-field textarea:focus { outline: 3px solid var(--amber); outline-offset: 1px; }

/* ---------- footer ---------- */
.site-footer {
  background: var(--ink);
  color: var(--cream);
  border-top: 3px solid var(--ink);
}
.site-footer a:hover { color: var(--amber); }
.site-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 2.5rem;
  padding-top: 3.5rem;
  padding-bottom: 2.5rem;
}
@media (max-width: 760px) {
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
}
.site-footer .brand__word { color: var(--paper); }
.site-footer .brand__word em { color: var(--sky); }
.site-footer__tagline { margin-top: .9rem; font-family: var(--font-accent); font-size: 1.15rem; color: var(--cream); max-width: 26ch; }
.site-footer__social { display: flex; gap: 1rem; margin-top: 1.1rem; font-size: .85rem; }
.site-footer__col h3 { font-family: var(--font-display); font-size: .85rem; color: var(--amber); margin-bottom: .9rem; letter-spacing: .04em; }
.site-footer__col li { margin-bottom: .55rem; font-size: .92rem; color: var(--cream); opacity: .9; }
.site-footer__bottom {
  border-top: 1px solid rgba(248,239,221,.15);
  padding-top: 1.3rem;
  padding-bottom: 1.3rem;
  font-size: .8rem;
  opacity: .7;
}

/* ---------- scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .5s ease, transform .5s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ---------- misc page bits ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }
.split--rev .split__art { order: -1; }
@media (min-width: 861px) { .split--rev .split__art { order: 2; } }

.pill-list { display: flex; flex-wrap: wrap; gap: .7rem; margin-top: 1.2rem; }
.pill-list li {
  display: flex; align-items: center; gap: .5rem;
  border: 2px solid var(--ink); border-radius: 999px; padding: .4rem .9rem;
  font-size: .88rem; background: var(--paper);
}
.pill-list svg { width: 1rem; height: 1rem; color: var(--green); }

.cta-band { text-align: center; }
.cta-band .h2 { max-width: 22ch; margin: 0 auto; }