/* ===========================================================
   AIS Educator Association — 2026 redesign
   Light + dark themes via [data-theme] attribute on <html>.
   Brand colors (periwinkle/sage) carried over from the real logo;
   everything else rebuilt for the consolidated 5-page site.
   =========================================================== */

:root{
  color-scheme: light;
  --bg:          #FDFCFB;
  --bg-raised:   #F5F4F0;
  --bg-sunken:   #EFEDE8;
  --ink:         #1C1E21;
  --ink-soft:    #5B6168;
  --line:        #E4E1DA;
  --periwinkle:      #6E7BC4;
  --periwinkle-soft: #8C95CD;
  --periwinkle-dark: #51609E;
  --sage:        #4F6B4A;
  --sage-soft:   #637C5E;
  --sage-dark:   #3C5338;
  --shadow: 0 1px 2px rgba(28,30,33,.04), 0 8px 24px -8px rgba(28,30,33,.10);
  --max-wide: 75rem;
  --max-text: 46rem;
  --radius: 10px;
}

:root[data-theme="dark"]{
  color-scheme: dark;
  --bg:          #14161C;
  --bg-raised:   #1C1F27;
  --bg-sunken:   #0E1014;
  --ink:         #EDEFF3;
  --ink-soft:    #A7ADB8;
  --line:        #2A2E38;
  --periwinkle:      #A7AEE3;
  --periwinkle-soft: #8C95CD;
  --periwinkle-dark: #C7CCF0;
  --sage:        #94B38C;
  --sage-soft:   #7E9B78;
  --sage-dark:   #B1CBA9;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 12px 32px -10px rgba(0,0,0,.55);
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
}

body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family: "Open Sans","Helvetica Neue",Arial,sans-serif;
  font-size: 1.05rem; line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  transition: background-color .25s ease, color .25s ease;
}

h1,h2,h3,h4,h5{ font-family:"Nunito Sans","Open Sans",Arial,sans-serif; color:var(--ink); font-weight:800; line-height:1.22; margin:0 0 .55em; }
h1{ font-size: clamp(2rem, 4.4vw, 3rem); }
h2{ font-size: clamp(1.4rem, 2.6vw, 1.8rem); margin-top:1.6em; }
h3{ font-size: 1.15rem; margin-top:1.3em; }
h4,h5{ font-size: 1rem; margin-top:1.2em; }
p{ margin:0 0 1.1em; }
a{ color:var(--periwinkle-dark); text-decoration:underline; text-underline-offset:2px; transition: color .15s ease; }
a:hover{ color:var(--sage-dark); }
strong{ font-weight:700; }
ul,ol{ padding-left:1.3em; margin:0 0 1.1em; }
li{ margin-bottom:.35em; }
img{ max-width:100%; display:block; height:auto; }
hr{ border:none; border-top:1px solid var(--line); margin:2.2em 0; }
:focus-visible{ outline:2px solid var(--periwinkle); outline-offset:2px; }
.skip-link{ position:absolute; left:-999px; }
.skip-link:focus{ left:1rem; top:1rem; background:var(--ink); color:var(--bg); padding:.5em 1em; z-index:200; }

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

/* ---------- masthead ---------- */
.masthead{ background:var(--bg); border-bottom:1px solid var(--line); position:sticky; top:0; z-index:60; transition: background-color .25s ease, border-color .25s ease; }
.masthead .wrap{ display:flex; align-items:center; justify-content:space-between; padding:.85rem 1.5rem; gap:1.25rem; }
.brand{ display:flex; align-items:center; gap:.7rem; text-decoration:none; }
.brand img{ height:46px; width:auto; }
.brand .brand-text{ font-family:"Nunito Sans",sans-serif; font-weight:800; letter-spacing:.02em; color:var(--periwinkle); font-size:1.05rem; text-transform:uppercase; line-height:1.15; }

nav.primary{ display:flex; align-items:center; gap:1.5rem; }
nav.primary ul{ display:flex; gap:1.5rem; margin:0; padding:0; list-style:none; }
nav.primary a{ color:var(--ink-soft); text-decoration:none; font-size:.85rem; font-weight:700; letter-spacing:.04em; text-transform:uppercase; padding:.4rem 0; border-bottom:2px solid transparent; transition: color .15s ease, border-color .15s ease; }
nav.primary a:hover, nav.primary a.active{ color:var(--sage); border-bottom-color:var(--sage); }
nav.primary a.nav-cta{ background:var(--periwinkle); color:#fff !important; text-decoration:none; padding:.6rem 1.4rem; border-radius:999px; font-size:.8rem; font-weight:700; text-transform:uppercase; letter-spacing:.03em; border-bottom:none !important; transition: background-color .15s ease, transform .15s ease; }
nav.primary a.nav-cta:hover{ background:var(--periwinkle-dark); transform: translateY(-1px); }

.theme-toggle{
  background:var(--bg-raised); border:1px solid var(--line); color:var(--ink);
  width:38px; height:38px; border-radius:999px; display:inline-flex; align-items:center; justify-content:center;
  cursor:pointer; transition: background-color .15s ease, border-color .15s ease;
}
.theme-toggle:hover{ border-color:var(--periwinkle); }
.theme-toggle svg{ width:18px; height:18px; }
.theme-toggle .icon-sun{ display:none; }
:root[data-theme="dark"] .theme-toggle .icon-moon{ display:none; }
:root[data-theme="dark"] .theme-toggle .icon-sun{ display:block; }

.nav-toggle{ display:none; }
@media (max-width: 860px){
  nav.primary ul{ display:none; }
  nav.primary a.nav-cta{ display:none; }
  .nav-toggle{ display:inline-flex; background:none; border:1px solid var(--line); border-radius:6px; padding:.4rem .7rem; font-size:.85rem; color:var(--ink); cursor:pointer; }
  body.nav-open nav.primary{ display:flex; flex-direction:column; align-items:stretch; width:100%; position:absolute; left:0; top:100%; background:var(--bg); border-top:1px solid var(--line); }
  body.nav-open nav.primary ul{ display:flex; flex-direction:column; gap:0; width:100%; }
  body.nav-open nav.primary li{ border-bottom:1px solid var(--line); }
  body.nav-open nav.primary a{ display:block; padding:.9rem 1.5rem; border-bottom:none; }
  body.nav-open nav.primary a.nav-cta{ display:block; margin:.8rem 1.5rem; text-align:center; }
}

/* ---------- carousel ---------- */
.carousel{ position:relative; overflow:hidden; }
.carousel-track{
  display:flex; scroll-snap-type:x mandatory; overflow-x:auto; scroll-behavior:smooth;
  -ms-overflow-style:none; scrollbar-width:none;
}
.carousel-track::-webkit-scrollbar{ display:none; }
.carousel-slide{
  flex:0 0 100%; scroll-snap-align:start; position:relative; min-height:min(640px, 82vh);
  display:flex; align-items:center; justify-content:center; text-align:center; color:#fff;
  background-size:cover; background-position:center;
}
.carousel-slide::before{ content:""; position:absolute; inset:0; background:linear-gradient(180deg, rgba(18,20,26,.42), rgba(18,20,26,.58)); }
.carousel-slide .slide-content{ position:relative; z-index:1; padding:2rem 1.5rem; max-width:46rem; }
.carousel-slide .eyebrow{ text-transform:uppercase; letter-spacing:.08em; font-weight:700; font-size:.9rem; margin-bottom:.6rem; }
.carousel-slide h1,.carousel-slide h2{ color:#fff; margin:0 0 .5rem; }
.carousel-slide p{ font-size:1.1rem; margin-bottom:1.4rem; }
.carousel-controls{ position:absolute; inset:0; display:flex; align-items:center; justify-content:space-between; padding:0 1rem; pointer-events:none; }
.carousel-arrow{
  pointer-events:auto; background:rgba(20,22,30,.45); border:1px solid rgba(255,255,255,.5); color:#fff;
  width:44px; height:44px; border-radius:999px; display:flex; align-items:center; justify-content:center;
  cursor:pointer; transition: background-color .15s ease;
}
.carousel-arrow:hover{ background:rgba(20,22,30,.7); }
.carousel-arrow svg{ width:20px; height:20px; }
.carousel-dots{ position:absolute; left:0; right:0; bottom:1.2rem; display:flex; justify-content:center; gap:.5rem; z-index:2; }
.carousel-dots button{ width:9px; height:9px; border-radius:999px; border:1px solid rgba(255,255,255,.8); background:rgba(255,255,255,.25); padding:0; cursor:pointer; transition: background-color .15s ease, transform .15s ease; }
.carousel-dots button[aria-current="true"]{ background:#fff; transform:scale(1.15); }

/* ---------- featured Call for Papers banner (home) ---------- */
.featured-cfp{ padding: 2.2rem 0 0; }
.featured-cfp-card{
  background: linear-gradient(135deg, var(--sage), var(--sage-dark));
  color:#fff; border-radius: var(--radius); padding: 1.8rem 2rem;
  display:flex; align-items:center; justify-content:space-between; gap:1.8rem;
  box-shadow: var(--shadow);
}
.featured-cfp-card .eyebrow-dark{ color:#fff; opacity:.85; text-transform:uppercase; letter-spacing:.06em; font-weight:700; font-size:.78rem; margin:0 0 .4rem; }
.featured-cfp-card h2{ color:#fff; margin:0 0 .4rem; font-size:1.3rem; }
.featured-cfp-card p{ color:#fff; opacity:.92; margin:0; max-width:40rem; }
.featured-cfp-card .btn-primary{ background:#fff; color:var(--sage-dark); flex:none; }
.featured-cfp-card .btn-primary:hover{ background:#fff; opacity:.9; transform:translateY(-1px); }
@media (max-width: 760px){
  .featured-cfp-card{ flex-direction:column; align-items:flex-start; }
}

/* ---------- bento quick-nav (home) ---------- */
.quicknav{ padding: 3rem 0; }
.bento{ display:grid; grid-template-columns: repeat(4, 1fr); gap:1.1rem; }
.bento a{
  text-decoration:none; color:var(--ink); background:var(--bg-raised); border:1px solid var(--line);
  border-radius:var(--radius); padding:1.6rem 1.5rem; display:block; box-shadow:var(--shadow);
  transition: transform .18s ease, border-color .18s ease;
}
.bento a:hover{ transform: translateY(-3px); border-color:var(--periwinkle); }
.bento h3{ margin:.6rem 0 .35rem; font-size:1.05rem; }
.bento p{ color:var(--ink-soft); font-size:.92rem; margin:0; }
.bento .bento-icon{ width:34px; height:34px; color:var(--periwinkle); }
@media (max-width: 900px){ .bento{ grid-template-columns: repeat(2,1fr); } }
@media (max-width: 560px){ .bento{ grid-template-columns: 1fr; } }

/* ---------- keynote + welcome (home) ---------- */
.keynote{ padding: 1rem 0 3rem; }
.keynote-eyebrow{ text-align:center; color:var(--periwinkle-dark); text-transform:uppercase; letter-spacing:.06em; font-weight:700; font-size:.78rem; margin-bottom:.4rem; }
.keynote-headline{ text-align:center; max-width:44rem; margin:0 auto .3em; }
.keynote-talk-title{ text-align:center; color:var(--sage); font-weight:700; font-size:1.05rem; max-width:38rem; margin:0 auto 1.8rem; }
.keynote-card{ display:grid; grid-template-columns:140px 1fr; gap:1.8rem; align-items:center; background:var(--bg-raised); border:1px solid var(--line); border-radius:var(--radius); padding:1.6rem 1.9rem; max-width:42rem; margin:0 auto; box-shadow:var(--shadow); }
.keynote-photo{ width:140px; height:140px; border-radius:50%; object-fit:cover; }
.keynote-card h3{ margin:0 0 .3rem; font-size:1.2rem; }
.keynote-card .title{ color:var(--ink-soft); font-size:.95rem; margin-bottom:.6rem; }
@media (max-width:560px){ .keynote-card{ grid-template-columns:1fr; text-align:center; justify-items:center; } }

.welcome{ background:var(--bg-raised); padding:3.2rem 0; margin-top:1rem; border-top:1px solid var(--line); border-bottom:1px solid var(--line); }

.btn{ display:inline-block; text-decoration:none; font-weight:700; font-size:.88rem; text-transform:uppercase; letter-spacing:.04em; padding:.85rem 2rem; border-radius:999px; transition: background-color .15s ease, border-color .15s ease, transform .15s ease; }
.btn-primary{ background:var(--periwinkle); color:#fff; }
.btn-primary:hover{ background:var(--periwinkle-dark); transform:translateY(-1px); }
.btn-ghost{ background:transparent; color:var(--sage); border:1px solid var(--sage); }
.btn-ghost:hover{ background:var(--bg-raised); }
.btn-overlay{ background:rgba(20,22,30,.45); color:#fff; border:1px solid rgba(255,255,255,.55); }
.btn-overlay:hover{ background:rgba(20,22,30,.68); }

/* ---------- mega-page layout (Conference / Journal / Membership / Board Officers) ---------- */
.page-hero{
  padding: 4rem 0 2.2rem;
  background-image: linear-gradient(135deg, rgba(98,110,185,.76), rgba(62,72,145,.82)), url('../images/mountain-banner.jpg');
  background-size: cover;
  background-position: center;
  color: #fff;
}
.page-hero .eyebrow{ color:#fff; opacity:.9; font-weight:700; text-transform:uppercase; letter-spacing:.05em; font-size:.85rem; margin-bottom:.4rem; }
.page-hero h1{ color:#fff; }
.page-hero p.lede{ color:rgba(255,255,255,.9); font-size:1.1rem; max-width:40rem; }

.section-nav{ position:sticky; top:72px; z-index:40; background:var(--bg); border-bottom:1px solid var(--line); }
.section-nav .wrap{ display:flex; gap:1.6rem; overflow-x:auto; padding:.8rem 1.5rem; }
.section-nav a{ white-space:nowrap; text-decoration:none; color:var(--ink-soft); font-weight:700; font-size:.85rem; text-transform:uppercase; letter-spacing:.03em; padding:.3rem 0; border-bottom:2px solid transparent; transition: color .15s ease, border-color .15s ease; }
.section-nav a.active, .section-nav a:hover{ color:var(--sage); border-bottom-color:var(--sage); }

.page-section{ padding:3rem 0; border-bottom:1px solid var(--line); scroll-margin-top: 130px; }
.page-section:last-of-type{ border-bottom:none; }
.page-section h2{ margin-top:0; }

/* accordion, used for Past Conferences and Call-for-Papers sub-details */
.accordion-item{ border:1px solid var(--line); border-radius:var(--radius); margin-bottom:.8rem; background:var(--bg-raised); overflow:hidden; }
.accordion-item summary{
  cursor:pointer; list-style:none; padding:1rem 1.3rem; font-weight:700; display:flex; align-items:center; justify-content:space-between; gap:1rem;
}
.accordion-item summary::-webkit-details-marker{ display:none; }
.accordion-item summary .chev{ width:16px; height:16px; flex:none; transition: transform .2s ease; color:var(--periwinkle); }
.accordion-item[open] summary .chev{ transform: rotate(90deg); }
.accordion-item .accordion-body{ padding:0 1.3rem 1.2rem; color:var(--ink-soft); }
.accordion-item .accordion-body a{ font-weight:600; }
.accordion-item .year-tag{ color:var(--periwinkle-dark); font-weight:800; margin-right:.6rem; }

.sponsor-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:1.4rem; margin-top:1.5rem; }
.sponsor-grid > div{ background:var(--bg-raised); border:1px solid var(--line); border-radius:var(--radius); padding:1.3rem 1.4rem; }
.sponsor-grid h3{ margin:0 0 .4rem; font-size:1rem; }
.sponsor-grid p{ color:var(--ink-soft); margin:0; font-size:.95rem; }
@media (max-width:760px){ .sponsor-grid{ grid-template-columns:1fr; } }

figure.wp-block-table{ margin:1.2rem 0; overflow-x:auto; }
.ledger-table{ width:100%; border-collapse:collapse; margin:1rem 0; }
.ledger-table td strong{ font-weight:700; }
.ledger-table th{ text-align:left; font-weight:700; font-size:.78rem; text-transform:uppercase; letter-spacing:.03em; color:var(--sage); border-bottom:2px solid var(--sage); padding:.5rem .8rem .5rem 0; }
.ledger-table td{ padding:.8rem .8rem .8rem 0; border-bottom:1px solid var(--line); vertical-align:top; }

/* ---------- footer ---------- */
footer.site-footer{ background:var(--bg-sunken); color:var(--ink-soft); margin-top:2rem; border-top:1px solid var(--line); }
footer.site-footer .wrap{ padding:2.6rem 1.5rem 2.2rem; display:grid; grid-template-columns:1.3fr 1fr 1fr; gap:2rem; }
footer.site-footer .brand .brand-text{ color:var(--ink); }
footer.site-footer h4{ color:var(--ink); font-size:.85rem; text-transform:uppercase; letter-spacing:.04em; font-weight:700; margin-bottom:.8rem; }
footer.site-footer a{ color:var(--ink-soft); text-decoration:none; }
footer.site-footer a:hover{ color:var(--sage); text-decoration:underline; }
footer.site-footer ul{ list-style:none; margin:0; padding:0; }
footer.site-footer li{ margin-bottom:.45rem; }
footer.site-footer .legal{ font-size:.82rem; line-height:1.55; }
.footer-bottom{ border-top:1px solid var(--line); padding:1rem 1.5rem; font-size:.8rem; text-align:center; }
@media (max-width:760px){ footer.site-footer .wrap{ grid-template-columns:1fr; } }

/* native dialog for privacy policy etc. */
dialog{ border:none; border-radius:var(--radius); padding:0; max-width:40rem; width:92vw; background:var(--bg); color:var(--ink); box-shadow:var(--shadow); }
dialog::backdrop{ background:rgba(0,0,0,.5); }
dialog .dialog-inner{ padding:1.8rem 2rem; max-height:80vh; overflow-y:auto; }
dialog .dialog-close{ float:right; background:none; border:none; font-size:1.3rem; cursor:pointer; color:var(--ink-soft); }