/* ==========================================================================
   TETC — Tech Enabled Teachers Community
   Design system: "Civic Current" — institutional weight, human momentum.
   ========================================================================== */

/* ---------- Tokens ---------- */
:root {
  --navy-deep: #0A1C52;
  --navy: #14347B;
  --green: #226E34;
  --green-dark: #1A5528;
  --gold: #F8B61C;
  --gold-soft: #FDEEC9;
  --sky: #C0DAFA;
  --sky-soft: #EAF3FE;
  --paper: #FFFFFF;
  --cloud: #F6F9FE;
  --ink: #172038;
  --ink-soft: #46506B;
  --line: #DCE5F2;

  --font-display: "Big Shoulders", sans-serif;
  --font-head: "Work Sans", sans-serif;
  --font-body: "Bricolage Grotesque", sans-serif;
  --font-label: "Outfit", sans-serif;

  --container: 1180px;
  --radius: 18px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 10px rgba(10, 28, 82, 0.07);
  --shadow-md: 0 10px 34px rgba(10, 28, 82, 0.12);
  --shadow-lg: 0 24px 64px rgba(10, 28, 82, 0.18);

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 0.65s;
}

/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--navy); }
h1, h2, h3, h4 { font-family: var(--font-head); color: var(--navy); line-height: 1.12; margin: 0 0 0.6em; font-weight: 700; }
p { margin: 0 0 1.1em; }
ul { padding-left: 0; }
:focus-visible { outline: 3px solid var(--gold); outline-offset: 3px; border-radius: 4px; }
::selection { background: var(--gold); color: var(--navy-deep); }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: var(--gold); color: var(--navy-deep); font-family: var(--font-label);
  padding: 0.7rem 1.2rem; border-radius: 0 0 10px 0; font-weight: 600; text-decoration: none;
}
.skip-link:focus { left: 0; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 clamp(1.1rem, 4vw, 2rem); }

/* ---------- Type scale ---------- */
.display-xl {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.9rem, 8.5vw, 6.4rem);
  line-height: 0.96;
  letter-spacing: 0.005em;
  text-transform: uppercase;
  margin: 0 0 0.35em;
}
.display-lg {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.3rem, 5.4vw, 4.1rem);
  line-height: 1;
  text-transform: uppercase;
  margin: 0 0 0.4em;
}
.section-title { font-size: clamp(1.7rem, 3.4vw, 2.5rem); letter-spacing: -0.015em; }
.tagline { font-family: var(--font-head); font-style: italic; font-weight: 500; color: var(--ink-soft); font-size: clamp(1.05rem, 2vw, 1.3rem); }
.lead { font-size: clamp(1.1rem, 2vw, 1.28rem); line-height: 1.6; color: var(--ink-soft); }

/* Kicker: small Outfit label with green square badge */
.kicker {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--font-label); font-weight: 600; font-size: 0.82rem;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--green);
  margin-bottom: 1.1rem;
}
.kicker::before { content: ""; width: 11px; height: 11px; background: var(--green); flex: none; }
.kicker--gold { color: var(--navy); }
.kicker--gold::before { background: var(--gold); }
.on-dark .kicker { color: var(--gold); }
.on-dark .kicker::before { background: var(--gold); }

/* Gold oval-outline badge (hand-drawn ellipse, like the flyers) */
.oval-badge {
  position: relative; display: inline-block;
  font-family: var(--font-label); font-weight: 600; font-size: 0.86rem;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--green);
  padding: 0.85rem 1.7rem;
}
.oval-badge svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.oval-badge svg ellipse { fill: none; stroke: var(--green); stroke-width: 2.5; }
.oval-badge--gold, .oval-badge--gold svg ellipse { color: var(--gold); stroke: var(--gold); }

/* Gold pill */
.pill {
  display: inline-block; background: var(--gold); color: var(--navy-deep);
  font-family: var(--font-body); font-weight: 700; font-size: 0.95rem;
  padding: 0.42rem 1.25rem; border-radius: 999px; letter-spacing: 0.02em;
}
.pill--outline { background: transparent; border: 2px solid var(--gold); color: var(--navy); }
.on-dark .pill--outline, .hero .pill--outline, .section--navy .pill--outline, .section--green .pill--outline { color: var(--gold); }
.pill--green { background: var(--green); color: #fff; }
.pill--sky { background: var(--sky-soft); color: var(--navy); }

/* Green triangle-arrow bullets */
.arrow-list { list-style: none; margin: 0 0 1.2em; }
.arrow-list li { position: relative; padding-left: 1.6em; margin-bottom: 0.55em; }
.arrow-list li::before {
  content: ""; position: absolute; left: 0; top: 0.42em;
  width: 0.72em; height: 0.82em; background: var(--green);
  clip-path: polygon(0 0, 100% 50%, 0 100%);
}
.on-dark .arrow-list li::before { background: var(--gold); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.55rem;
  font-family: var(--font-body); font-weight: 700; font-size: 1.02rem;
  padding: 0.92rem 2rem; border-radius: 999px; text-decoration: none;
  border: 2px solid transparent; cursor: pointer; line-height: 1.2;
  transition: transform 0.28s var(--ease-out), box-shadow 0.28s var(--ease-out), background 0.2s, color 0.2s;
  will-change: transform;
}
.btn .btn-arrow { width: 0.6em; height: 0.7em; background: currentColor; clip-path: polygon(0 0, 100% 50%, 0 100%); transition: transform 0.28s var(--ease-out); flex: none; }
.btn:hover .btn-arrow { transform: translateX(4px); }
.btn-gold { background: var(--gold); color: var(--navy-deep); }
.btn-gold:hover { box-shadow: 0 10px 26px rgba(248, 182, 28, 0.42); transform: translateY(-2px); }
.btn-navy { background: var(--navy); color: #fff; }
.btn-navy:hover { background: var(--navy-deep); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.btn-green { background: var(--green); color: #fff; }
.btn-green:hover { background: var(--green-dark); box-shadow: 0 10px 26px rgba(34, 110, 52, 0.35); transform: translateY(-2px); }
.btn-outline { border-color: var(--navy); color: var(--navy); background: transparent; }
.btn-outline:hover { background: var(--navy); color: #fff; transform: translateY(-2px); }
.btn-outline-light { border-color: rgba(255,255,255,0.65); color: #fff; background: transparent; }
.btn-outline-light:hover { background: #fff; color: var(--navy-deep); transform: translateY(-2px); }
.btn-lg { padding: 1.1rem 2.6rem; font-size: 1.12rem; }
.btn-sm { padding: 0.55rem 1.35rem; font-size: 0.92rem; }

/* ---------- Header / primary nav ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background 0.35s ease, box-shadow 0.35s ease, transform 0.35s ease;
  background: transparent;
}
.site-header::after { /* gold accent line under navy strip */
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold) 55%, transparent);
  opacity: 0; transition: opacity 0.35s ease;
}
.site-header.is-solid { background: var(--navy-deep); box-shadow: 0 6px 24px rgba(10,28,82,0.28); }
.site-header.is-solid::after { opacity: 1; }
.site-header--interior { background: var(--navy-deep); }
.site-header--interior::after { opacity: 1; }

.nav-bar { display: flex; align-items: center; gap: 1rem; height: 76px; max-width: 1400px; }
.nav-logo { display: flex; align-items: center; gap: 0.7rem; text-decoration: none; margin-right: auto; }
.nav-logo img { width: 46px; height: 46px; border-radius: 50%; background: #fff; }
.nav-logo .nav-logo-text { display: flex; flex-direction: column; line-height: 1.05; }
.nav-logo .nav-logo-text b { font-family: var(--font-display); font-weight: 800; font-size: 1.35rem; letter-spacing: 0.06em; color: #fff; }
.nav-logo .nav-logo-text span { font-family: var(--font-label); font-size: 0.58rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--gold); white-space: nowrap; }
.nav-logo { flex: none; }

.nav-links { display: flex; align-items: center; gap: clamp(0.15rem, 1vw, 0.5rem); list-style: none; margin: 0; padding: 0; }
.nav-links a {
  font-family: var(--font-label); font-size: 0.9rem; font-weight: 500;
  color: rgba(255,255,255,0.88); text-decoration: none;
  padding: 0.5rem 0.68rem; border-radius: 8px; position: relative; white-space: nowrap;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0.68rem; right: 0.68rem; bottom: 0.22rem; height: 2px;
  background: var(--gold); transform: scaleX(0); transform-origin: left;
  transition: transform 0.3s var(--ease-out);
}
.nav-links a:hover::after, .nav-links a[aria-current="page"]::after { transform: scaleX(1); }
.nav-links a[aria-current="page"] { color: #fff; }
.nav-cta { margin-left: 0.5rem; }

.nav-toggle {
  display: none; background: none; border: 0; cursor: pointer; padding: 0.6rem;
  width: 48px; height: 48px; position: relative; z-index: 130;
}
.nav-toggle span {
  display: block; width: 26px; height: 2.5px; background: #fff; margin: 5.5px auto;
  border-radius: 2px; transition: transform 0.35s var(--ease-out), opacity 0.25s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* Mobile overlay menu */
.nav-overlay {
  position: fixed; inset: 0; z-index: 120; background: var(--navy-deep);
  display: flex; flex-direction: column; justify-content: center; padding: 5.5rem 2rem 2.5rem;
  opacity: 0; visibility: hidden; transition: opacity 0.4s ease, visibility 0.4s;
  overflow-y: auto;
}
.nav-overlay.is-open { opacity: 1; visibility: visible; }
.nav-overlay .overlay-links { list-style: none; margin: 0; padding: 0; }
.nav-overlay .overlay-links a {
  display: block; font-family: var(--font-display); font-weight: 700; text-transform: uppercase;
  font-size: clamp(1.7rem, 6.5vh, 2.6rem); color: #fff; text-decoration: none;
  padding: 0.32rem 0; letter-spacing: 0.03em;
  transform: translateY(24px); opacity: 0;
  transition: transform 0.55s var(--ease-out), opacity 0.55s ease, color 0.2s;
}
.nav-overlay .overlay-links a:hover, .nav-overlay .overlay-links a[aria-current="page"] { color: var(--gold); }
.nav-overlay.is-open .overlay-links a { transform: translateY(0); opacity: 1; }
.nav-overlay .overlay-cta { margin-top: 2rem; transform: translateY(24px); opacity: 0; transition: transform 0.55s var(--ease-out) 0.3s, opacity 0.55s ease 0.3s; }
.nav-overlay.is-open .overlay-cta { transform: translateY(0); opacity: 1; }
.nav-overlay .overlay-waves { position: absolute; right: -18%; bottom: -22%; width: 70vmin; opacity: 0.16; pointer-events: none; }

body.menu-open { overflow: hidden; }

/* ---------- Breadcrumbs ---------- */
.breadcrumbs {
  background: var(--cloud); border-bottom: 1px solid var(--line);
  font-family: var(--font-label); font-size: 0.84rem;
}
.breadcrumbs ol { display: flex; flex-wrap: wrap; align-items: center; gap: 0.15rem; list-style: none; margin: 0; padding: 0.72rem 0; }
.breadcrumbs li { display: flex; align-items: center; }
.breadcrumbs a { color: var(--ink-soft); text-decoration: none; padding: 0.15rem 0.4rem; border-radius: 6px; }
.breadcrumbs a:hover { color: var(--green); }
.breadcrumbs [aria-current="page"] { color: var(--navy); font-weight: 600; padding: 0.15rem 0.4rem; }
.crumb-sep {
  width: 0.52em; height: 0.62em; background: var(--green); flex: none; margin: 0 0.35rem;
  clip-path: polygon(0 0, 100% 50%, 0 100%);
}
@keyframes crumb-pulse { 0%,100% { transform: translateX(0);} 50% { transform: translateX(3px);} }
.breadcrumbs li:hover + li .crumb-sep { animation: crumb-pulse 0.6s var(--ease-out); }

/* Home quick-jump strip (breadcrumb bar variant) */
.quickjump { background: var(--navy); position: relative; z-index: 5; }
.quickjump .quickjump-row { display: flex; align-items: center; gap: 0.1rem; overflow-x: auto; scrollbar-width: none; padding: 0.62rem 0; }
.quickjump .quickjump-row::-webkit-scrollbar { display: none; }
.quickjump span.quickjump-label { font-family: var(--font-label); font-size: 0.78rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--gold); white-space: nowrap; margin-right: 0.6rem; }
.quickjump a { display: flex; align-items: center; gap: 0.5rem; font-family: var(--font-label); font-size: 0.85rem; color: rgba(255,255,255,0.9); text-decoration: none; white-space: nowrap; padding: 0.25rem 0.55rem; border-radius: 6px; }
.quickjump a:hover { color: var(--gold); }
.quickjump a .crumb-sep { margin: 0; background: var(--gold); }

/* ---------- Hero ---------- */
.hero { position: relative; background: var(--navy-deep); color: #fff; overflow: hidden; }
.hero .container { position: relative; z-index: 3; }
.hero--home { min-height: 100svh; display: flex; align-items: center; padding: 8.5rem 0 5.5rem; }
.hero--page { padding: 9.5rem 0 4.5rem; }
.hero h1 { color: #fff; }
.hero .tagline { color: var(--sky); }
/* Hero entrance: text is visible by default (fast first paint, no-JS safe);
   js/main.js animates it in with the Web Animations API when available. */
.hero :is(.display-xl, .display-lg) .line { display: block; overflow: hidden; }
.hero :is(.display-xl, .display-lg) .line > span { display: inline-block; }
.hero .accent-word { color: var(--gold); }
.hero .accent-word--green { color: #7BC98F; }

/* Concentric arc waves — the signature ambient element */
.arc-waves { position: absolute; pointer-events: none; z-index: 1; }
.arc-waves svg { display: block; width: 100%; height: 100%; }
.arc-waves circle { fill: none; stroke: var(--sky); }
.arc-waves--drift { animation: waves-drift 26s ease-in-out infinite alternate; }
.arc-waves--spin { animation: waves-spin 90s linear infinite; }
@keyframes waves-drift {
  from { transform: translate3d(0, 0, 0) rotate(0deg); }
  to { transform: translate3d(-3%, 2.5%, 0) rotate(6deg); }
}
@keyframes waves-spin { to { transform: rotate(360deg); } }
.hero .arc-waves { opacity: 0.22; }

/* darker sections get faint waves */
.section--waves { position: relative; overflow: hidden; }
.section--waves > .container { position: relative; z-index: 2; }
.section--waves .arc-waves { opacity: 0.5; }

/* ---------- Sections ---------- */
.section { padding: clamp(4rem, 9vw, 7rem) 0; position: relative; }
.section--tight { padding: clamp(2.8rem, 6vw, 4.5rem) 0; }
.section--cloud { background: var(--cloud); }
.section--sky { background: var(--sky-soft); }
.section--navy { background: var(--navy-deep); color: #fff; }
.section--navy h2, .section--navy h3 { color: #fff; }
.section--navy .lead, .section--navy p { color: rgba(255,255,255,0.82); }
.section--green { background: var(--green); color: #fff; }
.section--green h2 { color: #fff; }
.section-head { max-width: 720px; margin-bottom: clamp(2rem, 5vw, 3.4rem); }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head--center .kicker { justify-content: center; }

/* Navy header strip with gold accent (motif, used atop feature blocks) */
.strip-heading { background: var(--navy-deep); color: #fff; border-bottom: 3px solid var(--gold); padding: 0.85rem 1.4rem; border-radius: var(--radius-sm) var(--radius-sm) 0 0; font-family: var(--font-head); font-weight: 600; letter-spacing: 0.02em; }

/* ---------- Cards ---------- */
.card {
  background: var(--paper); border-radius: var(--radius); box-shadow: var(--shadow-sm);
  padding: 2rem; border: 1px solid var(--line);
  transition: transform 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out);
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.grid { display: grid; gap: 1.5rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* EPIC value cards */
.epic-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.4rem; }
.epic-card {
  position: relative; background: var(--paper); border-radius: var(--radius);
  padding: 2.2rem 1.7rem 1.9rem; border: 1px solid var(--line); box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out);
}
.epic-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); }
.epic-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 5px;
  background: var(--gold); transform: scaleX(0); transform-origin: left;
  transition: transform 0.45s var(--ease-out);
}
.epic-card:hover::before { transform: scaleX(1); }
.epic-letter {
  font-family: var(--font-display); font-weight: 800; font-size: 3.4rem; line-height: 1;
  color: var(--green); display: block; margin-bottom: 0.7rem;
}
.epic-card h3 { font-size: 1.14rem; }
.epic-card p { font-size: 0.97rem; color: var(--ink-soft); margin: 0; }

/* Stats */
.stats-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; text-align: center; }
.stat .stat-num {
  font-family: var(--font-display); font-weight: 800; font-size: clamp(2.6rem, 6vw, 4.2rem);
  color: var(--gold); line-height: 1; display: block;
}
.stat .stat-label { font-family: var(--font-label); font-size: 0.88rem; letter-spacing: 0.14em; text-transform: uppercase; margin-top: 0.5rem; display: block; color: inherit; }

/* Countdown */
.countdown { display: flex; gap: clamp(0.7rem, 2.5vw, 1.4rem); }
.countdown .cd-cell {
  background: rgba(255,255,255,0.07); border: 1px solid rgba(192,218,250,0.28);
  border-radius: var(--radius-sm); padding: 0.85rem 0.6rem; min-width: clamp(66px, 9vw, 96px); text-align: center;
  backdrop-filter: blur(4px);
}
.countdown .cd-num { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.9rem, 4.5vw, 3rem); color: var(--gold); line-height: 1; display: block; font-variant-numeric: tabular-nums; }
.countdown .cd-label { font-family: var(--font-label); font-size: 0.68rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--sky); display: block; margin-top: 0.35rem; }

/* ---------- Speaker cards ---------- */
.speaker-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.speaker-card {
  position: relative; background: var(--paper); border-radius: var(--radius);
  border: 1px solid var(--line); overflow: hidden; box-shadow: var(--shadow-sm);
  transition: transform 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out);
  cursor: pointer; text-align: left; padding: 0; font: inherit; width: 100%;
}
.speaker-card:hover, .speaker-card:focus-visible { transform: translateY(-8px); box-shadow: var(--shadow-md); }
.speaker-photo { position: relative; aspect-ratio: 1; background: var(--sky-soft); overflow: hidden; }
.speaker-photo img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease-out); }
.speaker-card:hover .speaker-photo img { transform: scale(1.05); }
.speaker-topic {
  position: absolute; inset: 0; background: linear-gradient(to top, rgba(10,28,82,0.94) 20%, rgba(10,28,82,0.55) 60%, transparent);
  display: flex; align-items: flex-end; padding: 1.1rem;
  opacity: 0; transition: opacity 0.4s ease;
}
.speaker-card:hover .speaker-topic, .speaker-card:focus-visible .speaker-topic { opacity: 1; }
.speaker-topic p { color: #fff; font-size: 0.88rem; line-height: 1.45; margin: 0; }
.speaker-topic .topic-label { display: block; font-family: var(--font-label); font-size: 0.66rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--gold); margin-bottom: 0.3rem; }
.speaker-meta { display: block; padding: 1.15rem 1.25rem 1.3rem; }
.speaker-meta .speaker-name { display: block; font-family: var(--font-head); font-weight: 700; color: var(--navy); font-size: 1.06rem; line-height: 1.25; margin-bottom: 0.25rem; }
.speaker-meta p { font-size: 0.86rem; color: var(--ink-soft); margin: 0; line-height: 1.45; }
a.speaker-card { text-decoration: none; display: block; }
.speaker-track-tag { position: absolute; top: 0.9rem; left: 0.9rem; z-index: 2; font-size: 0.72rem; font-family: var(--font-label); letter-spacing: 0.08em; padding: 0.28rem 0.8rem; }

.speaker-card--placeholder { cursor: default; border-style: dashed; border-color: var(--sky); background: var(--cloud); }
.speaker-card--placeholder:hover { transform: none; box-shadow: var(--shadow-sm); }
.speaker-photo--placeholder { display: grid; place-items: center; }
.speaker-photo--placeholder .ph-mark { width: 42%; opacity: 0.55; }

/* Filter buttons */
.filter-bar { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-bottom: 2.2rem; }
.filter-btn {
  font-family: var(--font-label); font-weight: 500; font-size: 0.92rem;
  padding: 0.55rem 1.4rem; border-radius: 999px; border: 2px solid var(--line);
  background: var(--paper); color: var(--ink-soft); cursor: pointer;
  transition: all 0.25s ease;
}
.filter-btn:hover { border-color: var(--green); color: var(--green); }
.filter-btn[aria-pressed="true"] { background: var(--navy); border-color: var(--navy); color: #fff; }

/* Speaker modal */
.modal { position: fixed; inset: 0; z-index: 150; display: none; }
.modal.is-open { display: block; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(10, 28, 82, 0.72); backdrop-filter: blur(3px); }
.modal-panel {
  position: relative; z-index: 2; max-width: 880px; margin: 4.5vh auto; max-height: 91vh;
  background: var(--paper); border-radius: var(--radius); overflow-y: auto;
  box-shadow: var(--shadow-lg); animation: modal-in 0.4s var(--ease-out);
  width: calc(100% - 2rem);
}
@keyframes modal-in { from { opacity: 0; transform: translateY(30px);} to { opacity: 1; transform: translateY(0);} }
.modal-close {
  position: sticky; top: 0.9rem; margin-left: auto; margin-right: 0.9rem; display: block;
  width: 44px; height: 44px; border-radius: 50%; border: 0; background: var(--navy-deep);
  color: #fff; font-size: 1.35rem; cursor: pointer; z-index: 3; line-height: 1;
}
.modal-close:hover { background: var(--green); }
.modal-body { display: grid; grid-template-columns: 300px 1fr; gap: 1.8rem; padding: 0 2.2rem 2.2rem; margin-top: -2.2rem; }
.modal-body .modal-photo { border-radius: var(--radius-sm); overflow: hidden; align-self: start; }
.modal-bio h3 { font-size: 1.5rem; margin-bottom: 0.2rem; }
.modal-bio .modal-role { color: var(--green); font-weight: 600; font-size: 0.95rem; margin-bottom: 1rem; }
.modal-bio p { font-size: 0.98rem; color: var(--ink-soft); }

/* ---------- Track cards (K-12 / Higher Ed) ---------- */
.track-card { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-md); display: flex; flex-direction: column; }
.track-card .track-head { padding: 2rem 2rem 1.6rem; color: #fff; position: relative; overflow: hidden; }
.track-card--k12 .track-head { background: linear-gradient(135deg, var(--green) 0%, var(--green-dark) 100%); }
.track-card--he .track-head { background: linear-gradient(135deg, var(--navy) 0%, var(--navy-deep) 100%); }
.track-card .track-head h3 { color: #fff; font-size: 1.55rem; margin-bottom: 0.3rem; }
.track-card .track-head .track-date { font-family: var(--font-label); letter-spacing: 0.1em; text-transform: uppercase; font-size: 0.85rem; color: var(--gold); font-weight: 600; }
.track-card .track-body { background: var(--paper); padding: 1.8rem 2rem 2.2rem; flex: 1; display: flex; flex-direction: column; border: 1px solid var(--line); border-top: 0; border-radius: 0 0 var(--radius) var(--radius); }
.track-card .track-body .btn { margin-top: auto; align-self: flex-start; }

/* ---------- Agenda ---------- */
.tabs { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 2.4rem; }
.tab-btn {
  font-family: var(--font-head); font-weight: 600; font-size: 1rem;
  padding: 0.8rem 1.7rem; border-radius: 999px; border: 2px solid var(--line);
  background: var(--paper); color: var(--ink-soft); cursor: pointer; transition: all 0.25s ease;
}
.tab-btn:hover { border-color: var(--gold); }
.tab-btn[aria-selected="true"] { background: var(--navy-deep); border-color: var(--navy-deep); color: #fff; }
.tab-panel[hidden] { display: none; }

.timeline { position: relative; padding-left: 2rem; }
.timeline::before { content: ""; position: absolute; left: 8px; top: 8px; bottom: 8px; width: 3px; background: var(--sky); border-radius: 2px; }
.session { position: relative; margin-bottom: 1.1rem; }
.session::before {
  content: ""; position: absolute; left: calc(-2rem + 2px); top: 1.45rem;
  width: 15px; height: 15px; border-radius: 50%; background: var(--gold); border: 3px solid #fff; box-shadow: 0 0 0 2px var(--gold);
}
.session--break::before { background: var(--sky); box-shadow: 0 0 0 2px var(--sky); }
.session-toggle {
  width: 100%; text-align: left; background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 1.15rem 3.2rem 1.15rem 1.4rem; cursor: pointer; font: inherit;
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.4rem 1.1rem; position: relative;
  transition: box-shadow 0.3s ease, border-color 0.3s ease;
}
.session-toggle:hover { border-color: var(--green); box-shadow: var(--shadow-sm); }
.session-toggle .session-time { font-family: var(--font-label); font-weight: 600; font-size: 0.84rem; letter-spacing: 0.08em; color: var(--green); white-space: nowrap; }
.session-toggle .session-title { font-family: var(--font-head); font-weight: 600; color: var(--navy); font-size: 1.04rem; }
.session-toggle::after {
  content: ""; position: absolute; right: 1.3rem; top: 50%; width: 0.62em; height: 0.72em;
  background: var(--green); clip-path: polygon(0 0, 100% 50%, 0 100%);
  transform: translateY(-50%); transition: transform 0.35s var(--ease-out);
}
.session-toggle[aria-expanded="true"]::after { transform: translateY(-50%) rotate(90deg); }
.session-detail { overflow: hidden; height: 0; transition: height 0.4s var(--ease-out); }
.session-detail-inner { padding: 1rem 1.4rem 0.6rem; color: var(--ink-soft); font-size: 0.97rem; }

/* ---------- Accordion (FAQ) ---------- */
.accordion { border: 1px solid var(--line); border-radius: var(--radius-sm); overflow: hidden; background: var(--paper); }
.accordion + .accordion { margin-top: 0.8rem; }
.accordion-toggle {
  width: 100%; text-align: left; background: none; border: 0; cursor: pointer; font: inherit;
  font-family: var(--font-head); font-weight: 600; color: var(--navy); font-size: 1.05rem;
  padding: 1.25rem 3.2rem 1.25rem 1.5rem; position: relative;
}
.accordion-toggle::after {
  content: ""; position: absolute; right: 1.4rem; top: 50%; width: 0.62em; height: 0.72em;
  background: var(--gold); clip-path: polygon(0 0, 100% 50%, 0 100%);
  transform: translateY(-50%) rotate(90deg); transition: transform 0.35s var(--ease-out);
}
.accordion-toggle[aria-expanded="true"]::after { transform: translateY(-50%) rotate(-90deg); }
.accordion-toggle:hover { color: var(--green); }
.accordion-panel { overflow: hidden; height: 0; transition: height 0.4s var(--ease-out); }
.accordion-panel-inner { padding: 0 1.5rem 1.4rem; color: var(--ink-soft); }

/* ---------- Forms ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.form-field { display: flex; flex-direction: column; gap: 0.4rem; }
.form-field--full { grid-column: 1 / -1; }
.form-field label { font-family: var(--font-label); font-weight: 600; font-size: 0.88rem; color: var(--navy); letter-spacing: 0.04em; }
.form-field .req { color: var(--green); }
.form-field input, .form-field select, .form-field textarea {
  font: inherit; font-size: 1rem; padding: 0.85rem 1.05rem; border: 2px solid var(--line);
  border-radius: var(--radius-sm); background: var(--paper); color: var(--ink); width: 100%;
  transition: border-color 0.25s ease;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus { border-color: var(--green); outline: none; }
.form-field input[aria-invalid="true"], .form-field textarea[aria-invalid="true"] { border-color: #C0392B; }
.field-error { color: #C0392B; font-size: 0.84rem; display: none; }
.field-error.is-visible { display: block; }
.form-note { font-size: 0.9rem; color: var(--ink-soft); }

/* Radio cards (track / mode selection) */
.choice-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.choice-card { position: relative; }
.choice-card input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.choice-card .choice-body {
  border: 2px solid var(--line); border-radius: var(--radius-sm); padding: 1.2rem 1.3rem;
  transition: all 0.25s ease; height: 100%;
}
.choice-card input:checked + .choice-body { border-color: var(--green); background: #F1F8F2; box-shadow: 0 0 0 1px var(--green); }
.choice-card input:focus-visible + .choice-body { outline: 3px solid var(--gold); outline-offset: 2px; }
.choice-card b { font-family: var(--font-head); color: var(--navy); display: block; margin-bottom: 0.2rem; }
.choice-card span { font-size: 0.88rem; color: var(--ink-soft); }

.form-success { display: none; background: #F1F8F2; border: 2px solid var(--green); border-radius: var(--radius); padding: 2rem; }
.form-success.is-visible { display: block; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-deep); color: rgba(255,255,255,0.8); position: relative; overflow: hidden; }
.site-footer::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: var(--gold); }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.3fr; gap: 2.5rem; padding: 4rem 0 2.5rem; position: relative; z-index: 2; }
.footer-grid .footer-h { color: var(--gold); font-family: var(--font-label); font-weight: 600; font-size: 0.85rem; letter-spacing: 0.18em; text-transform: uppercase; margin: 0 0 1.1rem; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; }
.footer-grid li { margin-bottom: 0.5rem; }
.footer-grid a { color: rgba(255,255,255,0.8); text-decoration: none; font-size: 0.95rem; }
.footer-grid a:hover { color: var(--gold); }
.footer-brand img { width: 54px; height: 54px; border-radius: 50%; background: #fff; margin-bottom: 0.9rem; }
.footer-brand p { font-size: 0.93rem; color: rgba(255,255,255,0.66); max-width: 300px; }
.footer-cta-line { font-family: var(--font-head); font-style: italic; color: var(--gold); font-size: 1.05rem; }
.footer-bottom { border-top: 1px solid rgba(192,218,250,0.18); padding: 1.4rem 0; font-size: 0.85rem; color: rgba(255,255,255,0.55); display: flex; flex-wrap: wrap; gap: 0.8rem; justify-content: space-between; position: relative; z-index: 2; }
.site-footer .arc-waves { right: -12%; bottom: -30%; width: 46vmin; height: 46vmin; opacity: 0.1; }

/* ---------- Scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity var(--dur) var(--ease-out), transform var(--dur) var(--ease-out); will-change: opacity, transform; }
.reveal.is-in { opacity: 1; transform: none; }
.reveal-clip { clip-path: inset(0 0 100% 0); transition: clip-path 0.85s var(--ease-out); }
.reveal-clip.is-in { clip-path: inset(0 0 0 0); }
.stagger > * { opacity: 0; transform: translateY(30px); transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out); }
.stagger.is-in > * { opacity: 1; transform: none; }
.stagger.is-in > *:nth-child(1) { transition-delay: 0.05s; }
.stagger.is-in > *:nth-child(2) { transition-delay: 0.13s; }
.stagger.is-in > *:nth-child(3) { transition-delay: 0.21s; }
.stagger.is-in > *:nth-child(4) { transition-delay: 0.29s; }
.stagger.is-in > *:nth-child(5) { transition-delay: 0.37s; }
.stagger.is-in > *:nth-child(6) { transition-delay: 0.45s; }
.stagger.is-in > *:nth-child(7) { transition-delay: 0.53s; }
.stagger.is-in > *:nth-child(8) { transition-delay: 0.61s; }
.stagger.is-in > *:nth-child(n+9) { transition-delay: 0.69s; }

/* ---------- Utility ---------- */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.img-frame { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-md); position: relative; }
.img-frame--tilt { transform: rotate(-1.5deg); }
.img-frame img { width: 100%; }
.text-center { text-align: center; }
.mt-0 { margin-top: 0; } .mb-0 { margin-bottom: 0; }
.gold-rule { width: 74px; height: 4px; background: var(--gold); border: 0; margin: 1.3rem 0; }
.text-gold { color: var(--gold); }
.visually-hidden { position: absolute; width: 1px; height: 1px; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.logo-wall { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; }
.logo-tile {
  display: grid; place-items: center; background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 1.6rem 1.2rem; min-height: 110px;
  font-family: var(--font-head); font-weight: 600; color: var(--ink-soft); text-align: center;
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}
.logo-tile:hover { transform: translateY(-4px); box-shadow: var(--shadow-sm); }
.logo-tile img { max-height: 64px; width: auto; }
.logo-tile--placeholder { border-style: dashed; color: #94A3C4; font-size: 0.9rem; }

/* Gallery photos */
.gallery-photo { border-radius: var(--radius-sm); overflow: hidden; aspect-ratio: 4 / 3; box-shadow: var(--shadow-sm); }
.gallery-photo picture, .gallery-photo img { width: 100%; height: 100%; }
.gallery-photo img { object-fit: cover; transition: transform 0.6s var(--ease-out); }
.gallery-photo:hover img { transform: scale(1.05); }

/* Map embed */
.map-embed { width: 100%; aspect-ratio: 16 / 9; border: 0; border-radius: var(--radius-sm); box-shadow: var(--shadow-sm); display: block; }

/* Gallery placeholders */
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.gallery-ph {
  aspect-ratio: 4 / 3; border-radius: var(--radius-sm); position: relative; overflow: hidden;
  background: linear-gradient(140deg, var(--sky-soft), var(--sky));
  display: grid; place-items: center;
}
.gallery-ph span { font-family: var(--font-label); font-size: 0.78rem; letter-spacing: 0.1em; color: var(--navy); opacity: 0.75; text-align: center; padding: 0 1rem; }
.gallery-ph::after { content: ""; position: absolute; inset: 0; border: 2px dashed rgba(20, 52, 123, 0.25); border-radius: var(--radius-sm); }

/* Testimonials */
.quote-card { background: var(--paper); border-left: 5px solid var(--gold); border-radius: var(--radius-sm); padding: 1.8rem 1.9rem; box-shadow: var(--shadow-sm); }
.quote-card blockquote { margin: 0 0 1rem; font-family: var(--font-head); font-style: italic; font-size: 1.06rem; color: var(--ink); line-height: 1.55; }
.quote-card figcaption { font-family: var(--font-label); font-size: 0.85rem; color: var(--green); letter-spacing: 0.05em; }

/* WhatsApp block */
.wa-cta { display: inline-flex; align-items: center; gap: 0.6rem; }
.wa-icon { width: 1.25em; height: 1.25em; flex: none; }

/* Newsletter mini-form (home join block) */
.newsletter-block { max-width: 560px; margin: 2.6rem auto 0; text-align: left; }
.newsletter-label { color: #fff !important; font-size: 0.95rem !important; }
.newsletter-row { display: flex; gap: 0.7rem; flex-wrap: wrap; }
.newsletter-row input { flex: 1 1 240px; border-color: transparent; }
.newsletter-block .field-error { color: #FFE9A8; }
.newsletter-block .form-success { background: rgba(255,255,255,0.12); border-color: var(--gold); color: #fff; }

/* ---------- Responsive ---------- */
@media (max-width: 1420px) {
  .nav-links a { font-size: 0.84rem; padding: 0.5rem 0.5rem; }
  .nav-links a::after { left: 0.5rem; right: 0.5rem; }
  .nav-logo .nav-logo-text span { display: none; }
}
@media (max-width: 1150px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .speaker-grid { grid-template-columns: repeat(3, 1fr); }
  .epic-grid, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .logo-wall { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 720px) {
  body { font-size: 1rem; }
  .two-col, .grid-2, .grid-3, .choice-row, .form-grid { grid-template-columns: 1fr; }
  .speaker-grid { grid-template-columns: repeat(2, 1fr); gap: 0.9rem; }
  .stats-row { grid-template-columns: 1fr; gap: 2rem; }
  .modal-body { grid-template-columns: 1fr; }
  .modal-body .modal-photo { max-width: 260px; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .hero--home { padding-top: 7rem; }
  .timeline { padding-left: 1.5rem; }
  .speaker-meta { padding: 0.85rem 0.9rem 1rem; }
  .speaker-meta .speaker-name { font-size: 0.98rem; }
}
@media (max-width: 460px) {
  .epic-grid, .grid-4 { grid-template-columns: 1fr; }
  .logo-wall { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .reveal, .stagger > *, .hero .hero-fade { opacity: 1 !important; transform: none !important; }
  .hero :is(.display-xl, .display-lg) .line > span { transform: none; }
  .reveal-clip { clip-path: none; }
  .arc-waves--drift, .arc-waves--spin { animation: none; }
}