/* ============================================================
   NextGen AI Innovation Challenge — CEAMLS, Morgan State University
   css/style.css
   Mobile-first, CSS variables, dark mode, reduced-motion, print
   ============================================================ */

/* ── Google Fonts ─────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Open+Dyslexic:wght@400;700&display=swap');

/* ── Design Tokens ─────────────────────────────────────────── */
:root {
  /* Brand colours */
  --color-primary:      #1B3A5C;
  --color-secondary:    #2E5C8A;
  --color-accent:       #F5A623;
  --color-accent-alt:   #FDB913;
  --color-white:        #FFFFFF;
  --color-bg:           #F5F5F5;
  --color-text:         #1A1A1A;
  --color-text-muted:   #4A4A4A;
  --color-border:       #D0D0D0;
  --color-card-bg:      #FFFFFF;
  --color-nav-bg:       #1B3A5C;
  --color-focus:        #F5A623;

  /* Typography */
  --font-base:          'Inter', system-ui, sans-serif;
  --font-dyslexia:      'OpenDyslexic', 'Comic Sans MS', cursive;
  --font-size-base:     18px;
  --font-size-sm:       0.875rem;
  --font-size-lg:       1.25rem;
  --font-size-xl:       1.5rem;
  --font-size-2xl:      2rem;
  --font-size-3xl:      2.75rem;
  --line-height:        1.65;

  /* Spacing */
  --space-xs:   0.5rem;
  --space-sm:   1rem;
  --space-md:   1.5rem;
  --space-lg:   2.5rem;
  --space-xl:   5rem;
  --section-py: 80px;

  /* Radii & shadows */
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --shadow-sm:  0 2px 8px rgba(0,0,0,.08);
  --shadow-md:  0 4px 20px rgba(0,0,0,.12);

  /* Transitions */
  --transition: 0.25s ease;
}

/* ── Dark Mode ──────────────────────────────────────────────── */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg:         #0F1923;
    --color-text:       #E8EEF4;
    --color-text-muted: #A0B0C0;
    --color-border:     #2A3F55;
    --color-card-bg:    #1A2D42;
    --color-nav-bg:     #0F1923;
    --shadow-sm:        0 2px 8px rgba(0,0,0,.3);
    --shadow-md:        0 4px 20px rgba(0,0,0,.4);
  }
}

/* Dark mode class override (accessibility widget) */
body.dark-mode {
  --color-bg:         #0F1923;
  --color-text:       #E8EEF4;
  --color-text-muted: #A0B0C0;
  --color-border:     #2A3F55;
  --color-card-bg:    #1A2D42;
  --color-nav-bg:     #0F1923;
}

/* High Contrast override */
body.high-contrast {
  --color-bg:       #000000;
  --color-text:     #FFFFFF;
  --color-text-muted: #FFFF00;
  --color-card-bg:  #111111;
  --color-border:   #FFFFFF;
  --color-accent:   #FFFF00;
  --color-primary:  #003080;
}

/* ── Reduced Motion ──────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body.reduce-motion *,
body.reduce-motion *::before,
body.reduce-motion *::after {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
  scroll-behavior: auto !important;
}

/* ── Base Reset ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
}

body {
  font-family: var(--font-base);
  font-size: 1rem;
  line-height: var(--line-height);
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color var(--transition), color var(--transition);
}

body.dyslexia-font {
  font-family: var(--font-dyslexia);
  letter-spacing: 0.05em;
  word-spacing: 0.15em;
  line-height: 1.8;
}

img, video { max-width: 100%; display: block; }

a {
  color: var(--color-secondary);
  text-decoration: underline;
  text-underline-offset: 3px;
}
a:hover { color: var(--color-accent); }

/* ── Focus Rings ────────────────────────────────────────────── */
:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

body.focus-highlight *:focus {
  outline: 4px solid var(--color-accent) !important;
  outline-offset: 4px !important;
  background-color: rgba(245,166,35,.15) !important;
}

/* ── Skip Link ───────────────────────────────────────────────── */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--color-accent);
  color: #000;
  padding: 0.75rem 1.25rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  z-index: 9999;
  text-decoration: none;
  transition: top 0.2s;
}
.skip-link:focus { top: 1rem; }

/* ── Navigation ──────────────────────────────────────────────── */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-nav-bg);
  box-shadow: 0 2px 12px rgba(0,0,0,.2);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 1rem;
}

.nav-brand {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-white);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}
.nav-brand span { color: var(--color-accent); }

.nav-links {
  display: none;
  list-style: none;
  gap: 0.25rem;
}

.nav-links a {
  color: rgba(255,255,255,.85);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
}
.nav-links a:hover,
.nav-links a.active {
  background: rgba(245,166,35,.2);
  color: var(--color-accent);
}

.nav-cta {
  display: none;
  padding: 0.5rem 1.25rem;
  background: var(--color-accent);
  color: #000 !important;
  border-radius: var(--radius-sm);
  font-weight: 700;
  text-decoration: none;
  font-size: 0.875rem;
  flex-shrink: 0;
  transition: background var(--transition);
}
.nav-cta:hover { background: var(--color-accent-alt); }

.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav drawer */
.mobile-nav {
  display: none;
  flex-direction: column;
  background: var(--color-primary);
  padding: 1rem 1.5rem 1.5rem;
  gap: 0.25rem;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  color: rgba(255,255,255,.9);
  text-decoration: none;
  font-weight: 500;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.mobile-nav a:hover { background: rgba(255,255,255,.1); }
.mobile-nav .mobile-cta {
  margin-top: 0.75rem;
  background: var(--color-accent);
  color: #000;
  font-weight: 700;
  text-align: center;
  padding: 0.75rem;
}

@media (min-width: 768px) {
  .nav-links { display: flex; }
  .nav-cta { display: inline-flex; }
  .hamburger { display: none; }
}

/* ── Container ───────────────────────────────────────────────── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ── Section Base ────────────────────────────────────────────── */
section {
  padding: var(--section-py) 0;
}

.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.2;
  margin-bottom: 1rem;
}

@media (prefers-color-scheme: dark) {
  .section-title { color: var(--color-accent); }
}
body.dark-mode .section-title { color: var(--color-accent); }

.section-intro {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 640px;
  margin-bottom: 3rem;
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--color-accent);
  color: #000;
}
.btn-primary:hover { background: var(--color-accent-alt); color: #000; }

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-white);
}
.btn-outline:hover {
  background: var(--color-white);
  color: var(--color-primary);
}

/* ── Fade-in animation ───────────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Hero Section ────────────────────────────────────────────── */
#hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 60%, #1a4a7c 100%);
  color: var(--color-white);
  padding: 100px 0 100px;
  position: relative;
  overflow: hidden;
}

#hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(245,166,35,.2);
  border: 1px solid rgba(245,166,35,.4);
  color: var(--color-accent);
  padding: 0.4rem 1rem;
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 0.75rem;
}

.hero-title .highlight { color: var(--color-accent); }

.hero-tagline {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  font-weight: 500;
  opacity: 0.9;
  margin-bottom: 1.5rem;
}

.hero-desc {
  font-size: 1.05rem;
  opacity: 0.85;
  max-width: 600px;
  margin-bottom: 2rem;
  line-height: 1.7;
}

.hero-date-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.25);
  padding: 0.5rem 1.25rem;
  border-radius: 100px;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 2.5rem;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3.5rem;
}

/* Countdown */
.countdown {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.countdown-unit {
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  text-align: center;
  min-width: 80px;
}

.countdown-number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
  color: var(--color-accent);
}

.countdown-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.8;
  margin-top: 0.25rem;
}
/* ── Hero Image ──────────────────────────────────────────────── */
.hero-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 3rem;
  position: relative;
}

.hero-image {
  flex-shrink: 0;
  width: 650px;
  display: none;
  position: sticky;
  top: 3rem;
  z-index: 0;
  margin-right: -50px;
}

.hero-image img {
  width: 140%;
  max-width: none;
  border-radius: none !important;
  box-shadow: none !important;
  opacity: 1;
  transform: scale(1.1);
}

@media (min-width: 900px) {
  .hero-image { display: block; }
  .hero-content { max-width: 580px; }
}

/* ── About Section ───────────────────────────────────────────── */
#about {
  background: var(--color-bg);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: start;
}

@media (min-width: 768px) {
  .about-grid { grid-template-columns: 1fr 1fr; }
}

.about-text p {
  margin-bottom: 1rem;
  color: #ffffff;
}

.about-text p:last-child { margin-bottom: 0; }

.about-highlights {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.highlight-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-sm);
}

.highlight-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.35rem;
}

body.dark-mode .highlight-card h3,
@media (prefers-color-scheme: dark) {
  .highlight-card h3 { color: #ffffff; }
}

.highlight-card p {
  font-size: 0.9rem;
  color: #ffffff;
  margin: 0;
}

/* ── Tracks Section ──────────────────────────────────────────── */
#tracks {
  background: var(--color-card-bg);
}

.tracks-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 600px) {
  .tracks-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 900px) {
  .tracks-grid { grid-template-columns: repeat(4, 1fr); }
}

.track-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.track-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.track-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  display: block;
}

.track-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.track-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

body.dark-mode .track-card h3 { color: var(--color-accent); }

.track-card p {
  font-size: 0.9rem;
  color: #ffffff;
}

/* ── Perks Section ───────────────────────────────────────────── */
#perks {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: var(--color-white);
}

#perks .section-title { color: var(--color-white); }
#perks .section-intro { color: rgba(255,255,255,.8); }

.perks-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 600px) {
  .perks-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 900px) {
  .perks-grid { grid-template-columns: repeat(4, 1fr); }
}

.perk-card {
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  text-align: center;
  backdrop-filter: blur(4px);
  transition: background var(--transition), transform var(--transition);
}
.perk-card:hover {
  background: rgba(255,255,255,.15);
  transform: translateY(-3px);
}

.perk-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  display: block;
}

.perk-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.perk-card p {
  font-size: 0.9rem;
  opacity: 0.85;
}

/* ── Schedule Section ────────────────────────────────────────── */
#schedule {
  background: var(--color-bg);
}

.schedule-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 0.625rem 1.5rem;
  border: 2px solid var(--color-border);
  background: var(--color-card-bg);
  color: var(--color-text);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.tab-btn.active,
.tab-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

.schedule-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.schedule-item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow-sm);
}

.schedule-time {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-accent);
  min-width: 72px;
  padding-top: 0.15rem;
  white-space: nowrap;
}

.schedule-event {
  font-weight: 600;
  color: var(--color-text);
}

.schedule-event small {
  display: block;
  font-weight: 400;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 0.15rem;
}

/* ── FAQ Section ─────────────────────────────────────────────── */
#faq {
  background: var(--color-card-bg);
}

.accordion {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 820px;
}

.accordion-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  background: var(--color-card-bg);
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  transition: background var(--transition);
}
.accordion-trigger:hover { background: rgba(245,166,35,.08); }
.accordion-trigger[aria-expanded="true"] { background: rgba(245,166,35,.1); }

.accordion-icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: transform var(--transition), background var(--transition);
}
.accordion-trigger[aria-expanded="true"] .accordion-icon {
  transform: rotate(45deg);
  background: var(--color-accent);
}

.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding var(--transition);
}
.accordion-panel.open { max-height: 500px; }

.accordion-body {
  padding: 0 1.5rem 1.25rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ── Sponsors Section ────────────────────────────────────────── */
#sponsors {
  background: var(--color-bg);
  text-align: center;
}

#sponsors .section-intro { margin-left: auto; margin-right: auto; }

.sponsors-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
  align-items: center;
}

.sponsor-item {
  background: var(--color-card-bg);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem 2.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-width: 160px;
  min-height: 100px;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition), transform var(--transition);
}
.sponsor-item:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.sponsor-item.featured {
  border-style: solid;
  border-color: var(--color-primary);
  border-width: 3px;
  background: #ffffff;
  color: white;
  min-width: 200px;
}

.sponsor-logo-text {
  font-weight: 800;
  font-size: 1rem;
  color: var(--color-primary);
}
.sponsor-item.featured .sponsor-logo-text { color: white; }

.sponsor-sub {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}
.sponsor-item.featured .sponsor-sub { color: rgba(255,255,255,.8); }

/* ── Team Section ────────────────────────────────────────────── */
/* ── Team Section Updates ───────────────────────────────────── */
#team {
  background: var(--color-card-bg);
  text-align: center;
}

#team .section-intro { margin-left: auto; margin-right: auto; }

.team-grid {
  display: flex;              /* Switch to Flexbox */
  flex-wrap: wrap;            /* Allow wrapping to new rows */
  justify-content: center;    /* Center the cards (fixes the detached look) */
  gap: 2rem;
  align-items: stretch;       /* Makes all cards in the same row the same height */
}

/* Remove the old Grid media queries as Flexbox handles this automatically */

.team-card {
  /* Fix the size issues */
  width: 280px;               /* Wider than before (was 220px) to prevent squashing */
  max-width: 100%;            /* Ensure it doesn't overflow on tiny screens */
  flex-grow: 0;               /* Don't stretch wildly wide */
  
  /* Layout inside the card */
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem 1.5rem;
  
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.team-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.team-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  margin: 0 auto 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: white;
  flex-shrink: 0;
}

.team-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.5rem;
  min-height: 3em;            /* Reserves space for 2 lines of name/title to align perfectly */
  display: flex;
  align-items: center;        /* Centers the text vertically in that space */
}

.team-card p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}


/* ── Footer ──────────────────────────────────────────────────── */
.site-footer {
  background: var(--color-primary);
  color: rgba(255,255,255,.85);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  padding-bottom: 3rem;
}

@media (min-width: 600px) {
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 900px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
}

.footer-brand h2 {
  font-size: 1.2rem;
  font-weight: 800;
  color: white;
  margin-bottom: 0.5rem;
}

.footer-brand h2 span { color: var(--color-accent); }

.footer-brand p {
  font-size: 0.9rem;
  opacity: 0.8;
  margin-bottom: 1.25rem;
  line-height: 1.6;
}

.footer-social {
  display: flex;
  gap: 0.75rem;
}

.social-link {
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,.12);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.95rem;
  text-decoration: none;
  transition: background var(--transition);
}
.social-link:hover {
  background: var(--color-accent);
  color: #000;
}

.footer-col h3 {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-links a {
  color: rgba(255,255,255,.75);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--color-accent); }

.footer-contact p {
  font-size: 0.9rem;
  opacity: 0.85;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-contact a {
  color: var(--color-accent);
  text-decoration: none;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding: 1.5rem 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.85rem;
  opacity: 0.75;
}

.footer-reg-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-accent);
  color: #000;
  font-weight: 700;
  font-size: 0.875rem;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: background var(--transition);
}
.footer-reg-btn:hover { background: var(--color-accent-alt); color: #000; }

/* ── Back to Top ──────────────────────────────────────────────── */
#back-to-top {
  position: fixed;
  bottom: 5rem;
  right: 1.5rem;
  z-index: 900;
  width: 46px;
  height: 46px;
  background: var(--color-primary);
  color: white;
  border: 2px solid var(--color-accent);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
}
#back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}
#back-to-top:hover { transform: translateY(-3px); }

/* ── Accessibility Widget ────────────────────────────────────── */
#a11y-widget {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 1100;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.5rem;
}

#a11y-toggle-btn {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--color-secondary);
  color: white;
  border: 2px solid var(--color-accent);
  cursor: pointer;
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  transition: background var(--transition), transform var(--transition);
}
#a11y-toggle-btn:hover {
  background: var(--color-primary);
  transform: scale(1.08);
}

#a11y-panel {
  display: none;
  background: var(--color-card-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  width: 260px;
  box-shadow: var(--shadow-md);
}
#a11y-panel.open { display: block; }

#a11y-panel h3 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

body.dark-mode #a11y-panel h3 { color: var(--color-accent); }

.a11y-controls {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.a11y-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.625rem 0.875rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  transition: background var(--transition), border-color var(--transition);
}
.a11y-btn:hover { background: rgba(245,166,35,.1); border-color: var(--color-accent); }
.a11y-btn.active { background: var(--color-primary); color: white; border-color: var(--color-primary); }

.font-size-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.font-size-controls span {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  flex: 1;
}

.font-btn {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  cursor: pointer;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}
.font-btn:hover { background: var(--color-accent); color: #000; }

/* ── Print Styles ────────────────────────────────────────────── */
@media print {
  .site-nav,
  #a11y-widget,
  #back-to-top,
  .hero-buttons,
  .schedule-tabs,
  .mobile-nav { display: none !important; }

  body { font-size: 12pt; color: #000; background: #fff; }

  section { page-break-inside: avoid; padding: 1.5rem 0; }

  a { color: #000; text-decoration: none; }
  a[href]::after { content: " (" attr(href) ")"; font-size: 10pt; }

  .tab-panel { display: block !important; }
}

/* ── Utility ─────────────────────────────────────────────────── */
.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;
}

.text-center { text-align: center; }

/* ── CEAMLS Logo in Navbar ─────────────────────────────────── */
.ceamls-logo-link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.nav-ceamls-logo {
  height: 40px;
  width: auto;
  transition: opacity var(--transition);
}

.nav-ceamls-logo:hover {
  opacity: 0.85;
}

@media (max-width: 767px) {
  .nav-ceamls-logo {
    height: 32px;
  }
}

/* ── K-12 AI Education Showcase Section ─────────────────────── */
#showcase {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
  color: var(--color-white);
}

#showcase .section-title {
  color: var(--color-white);
}

#showcase .section-label {
  color: var(--color-accent);
}

.showcase-intro {
  font-size: 1.2rem;
  line-height: 1.7;
  margin-bottom: 2.5rem;
  text-align: center;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  color: rgba(255,255,255,.95);
}

.showcase-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 600px) {
  .showcase-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .showcase-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.showcase-card {
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: transform var(--transition), background var(--transition);
}

.showcase-card:hover {
  transform: translateY(-4px);
  background: rgba(255,255,255,.2);
}

.showcase-icon {
  font-size: 2.5rem;
  display: block;
  margin-bottom: 1rem;
}

.showcase-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--color-accent);
}

.showcase-card p {
  font-size: 0.9rem;
  opacity: 0.9;
  line-height: 1.6;
}

/* ── Sponsors with Images ───────────────────────────────────── */
.sponsor-item {
  background: var(--color-card-bg);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  min-width: 180px;
  min-height: 140px;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition), transform var(--transition);
}

.sponsor-item:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.sponsor-item.featured {
  border-style: solid;
  border-color: var(--color-primary);
  border-width: 3px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: white;
}

.sponsor-logo {
  max-width: 120px;
  max-height: 80px;
  width: auto;
  height: auto;
  object-fit: contain;
}

.sponsor-logo-large {
  max-width: 160px;
  max-height: 100px;
}

.sponsor-logo-text {
  font-weight: 800;
  font-size: 1rem;
  color: var(--color-primary);
}

.sponsor-item.featured .sponsor-logo-text {
  color: white;
}

.sponsor-sub {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.sponsor-item.featured .sponsor-sub {
  color: rgba(255,255,255,.8);
}

/* ── Footer Register Button Fix (Always Visible) ───────────── */
.footer-reg-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-accent);
  color: #000;
  font-weight: 700;
  font-size: 0.875rem;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: background var(--transition), transform var(--transition);
}

.footer-reg-btn:hover {
  background: var(--color-accent-alt);
  color: #000;
  transform: translateY(-2px);
}
/* ── Sponsors with White Background ───────────────────────── */
.sponsor-item {
  background: #FFFFFF;
  border: 2px solid #E0E0E0;
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  min-width: 180px;
  min-height: 140px;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.sponsor-item:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

/* Featured sponsor (Morgan State) with white background too */
.sponsor-item.featured {
  background: #FFFFFF;
  border: 3px solid var(--color-primary);
}

.sponsor-logo {
  max-width: 140px;
  max-height: 100px;
  width: auto;
  height: auto;
  object-fit: contain;
}

.sponsor-logo-large {
  max-width: 180px;
  max-height: 120px;
}

.sponsor-logo-text {
  font-weight: 800;
  font-size: 1rem;
  color: var(--color-primary);
  display: none; /* Hide text when images work */
}

.sponsor-sub {
  font-size: 0.75rem;
  color: #666666;
  font-weight: 600;
  margin-top: 0.25rem;
}

/* For dark mode - keep sponsor boxes white for logo visibility */
body.dark-mode .sponsor-item {
  background: #FFFFFF;
  border-color: #CCCCCC;
}

body.dark-mode .sponsor-sub {
  color: #666666;
}

/* Sam's Club custom styling */
.sponsor-item.sams-club .sponsor-logo-text {
  color: #000000 !important;
  font-weight: 700;
}

.sponsor-item.sams-club .sponsor-sub {
  color: #666666 !important;
}

/* For dark mode - keep text black on white */
body.dark-mode .sponsor-item.sams-club .sponsor-logo-text {
  color: #000000 !important;
}

body.dark-mode .sponsor-item.sams-club .sponsor-sub {
  color: #666666 !important;
}
/* ── Uniform Sponsor Boxes ─────────────────────────────────── */
.sponsors-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: center;
  align-items: stretch;
}

.sponsor-item {
  width: 240px;
  min-width: 240px;
  max-width: 240px;
  height: 100px;
  background: #FFFFFF;
  border: 2px solid #E0E0E0;
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  text-align: center;
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}

.sponsor-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.12);
  border-color: var(--color-accent);
}

/* Featured sponsor (Morgan) - same size, just different border */
.sponsor-item.featured {
  background: #FFFFFF;
  border: 3px solid var(--color-primary);
}

/* Content container for consistent spacing */
.sponsor-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
}

/* All images same size */
.sponsor-item img {
  max-width: 140px;
  max-height: 90px;
  width: auto;
  height: auto;
  object-fit: contain;
}

/* Text styling */
.sponsor-logo-text {
  font-weight: 800;
  font-size: 1rem;
  color: var(--color-primary);
  margin: 0;
}

.sponsor-sub {
  font-size: 0.75rem;
  color: #666666;
  font-weight: 500;
  margin-top: 0.5rem;
}

/* Dark mode - keep boxes white for logo visibility */
body.dark-mode .sponsor-item {
  background: #FFFFFF;
  border-color: #CCCCCC;
}

body.dark-mode .sponsor-sub {
  color: #666666;
}

/* ── Navigation with Logo Fix ──────────────────────────────── */
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 70px;
}

/* Logo link container */
.ceamls-logo-link {
  display: inline-flex;
  align-items: center;
  line-height: 0;
  flex-shrink: 0;
}

/* CEAMLS Logo styling */
.nav-ceamls-logo {
  height: 44px;
  width: auto;
  max-width: 130px;
  object-fit: contain;
  transition: opacity var(--transition);
}

.nav-ceamls-logo:hover {
  opacity: 0.85;
}

/* Brand text */
.nav-brand {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-white);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
  flex-shrink: 0;
}

.nav-brand span {
  color: var(--color-accent);
}

/* Navigation links container */
.nav-links {
  display: none;
  list-style: none;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
  justify-content: center;
}

/* Desktop styles */
@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
  
  .nav-brand {
    font-size: 1.2rem;
  }
  
  .nav-ceamls-logo {
    height: 48px;
  }
}

/* Mobile adjustments */
@media (max-width: 767px) {
  .nav-inner {
    gap: 0.5rem;
  }
  
  .nav-brand {
    font-size: 0.9rem;
  }
  
  .nav-ceamls-logo {
    height: 35px;
    max-width: 100px;
  }
}

/* Very small screens */
@media (max-width: 480px) {
  .nav-brand {
    font-size: 0.8rem;
  }
  
  .nav-brand span {
    display: none; /* Hide "AI Challenge" text on very small screens */
  }
  
  .nav-brand {
    white-space: normal;
  }
  
  .nav-ceamls-logo {
    height: 30px;
    max-width: 80px;
  }
}

/* ── White Box Behind CEAMLS Logo ──────────────────────────── */
.ceamls-logo-link {
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  background: #FFFFFF;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.ceamls-logo-link:hover {
  background: #F5F5F5;
  transform: translateY(-1px);
  box-shadow: 0 2px 5px rgba(0,0,0,0.15);
}

.nav-ceamls-logo {
  height: 40px;
  width: auto;
  max-width: 120px;
  object-fit: contain;
  display: block;
}

/* Dark mode - keep white box */
body.dark-mode .ceamls-logo-link {
  background: #FFFFFF;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

body.dark-mode .ceamls-logo-link:hover {
  background: #F0F0F0;
}

/* Mobile adjustments */
@media (max-width: 768px) {
  .ceamls-logo-link {
    padding: 0.35rem 0.6rem;
  }
  
  .nav-ceamls-logo {
    height: 32px;
    max-width: 90px;
  }
}

@media (max-width: 480px) {
  .ceamls-logo-link {
    padding: 0.25rem 0.5rem;
  }
  
  .nav-ceamls-logo {
    height: 28px;
    max-width: 75px;
  }
}