/* ============================================
  NGCS 2027 — Unified Stylesheet
  Next Generation Cyber Security
  Black + Gold Theme
   ============================================ */

/* ===========================
   1. DESIGN TOKENS
   =========================== */
:root {
  /* Brand */
  --aira-navy:       #050505;
  --aira-navy-light: #111111;
  --aira-navy-mid:   #1f1f1f;
  --aira-cyan:       #d4af37;
  --aira-cyan-light: #ffe680;
  --aira-cyan-dark:  #b58c1a;
  --aira-emerald:    #ffd700;
  --aira-emerald-lt: #fff4b3;
  --aira-white:      #ffffff;
  --aira-gray-50:    #121212;
  --aira-gray-100:   #1f1f1f;
  --aira-gray-200:   #2f2f2f;
  --aira-gray-300:   #3f3f3f;
  --aira-gray-500:   #7a6e4d;

  /* Text */
  --text-primary:    #ffffff;
  --text-secondary:  #ffffff;
  --text-muted:      #ffffff;
  --text-on-dark:    #f8e8b2;
  --text-on-dark-2:  #ffffff;

  /* Surfaces */
  --surface-light:   #080808;
  --surface-alt:     #101010;
  --surface-dark:    #121212;
  --surface-dark-2:  #1a1a1a;

  /* Glass */
  --glass-dark:      rgba(0, 0, 0, 0.85);
  --glass-border:    rgba(212, 175, 55, 0.18);

  /* Shadows */
  --shadow-sm:  0 1px 2px rgba(0,0,0,0.35);
  --shadow-md:  0 4px 14px rgba(0,0,0,0.35);
  --shadow-lg:  0 10px 30px rgba(0,0,0,0.35);
  --shadow-xl:  0 16px 48px rgba(0,0,0,0.40);
  --shadow-cyan: 0 4px 20px rgba(212,175,55,0.2);

  /* Gradients */
  --grad-hero: linear-gradient(135deg, rgba(20,20,20,0.95) 0%, rgba(10,10,10,0.95) 50%, rgba(20,20,20,0.95) 100%);
  --grad-cyan: linear-gradient(135deg, #d4af37 0%, #ffd700 100%);
  --grad-mesh: radial-gradient(800px at 20% 30%, rgba(212,175,55,0.10), transparent),
               radial-gradient(600px at 80% 70%, rgba(255,215,0,0.08), transparent);

  /* Radius (SHARP — key difference from HAXD's 24px) */
  --radius:     4px;
  --radius-md:  6px;
  --radius-lg:  8px;
  --radius-pill: 9999px;

  /* Transitions */
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);

  /* Fonts */
  --font-heading: 'Space Grotesk', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', monospace;
}

/* ===========================
   2. BASE RESETS
   =========================== */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--text-primary);
  background: var(--surface-light);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--aira-emerald);
  line-height: 1.2;
  letter-spacing: 0;
}

 a {
   color: var(--aira-emerald);
   text-decoration: none;
 }
 a:hover { color: var(--aira-cyan-light); }

 p { margin-bottom: 1rem; }

img { max-width: 100%; height: auto; }
.text-cyan { color: var(--aira-cyan) !important; }
.text-secondary,
.text-muted,
.text-secondary-dark,
.text-muted-footer {
  color: #ffffff !important;
}

/* ===========================
  border-top: 1px solid rgba(255, 215, 0, 0.08);
   =========================== */
.aira-navbar {
  background: var(--glass-dark) !important;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
  padding: 0.6rem 0;
  z-index: 1030;
  transition: var(--transition);
}
.aira-navbar.scrolled {
  background: rgba(5, 5, 5, 0.97) !important;
  box-shadow: 0 4px 20px rgba(0,0,0,0.45);
  padding: 0.4rem 0;
}

.aira-navbar .navbar-brand {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}
.aira-navbar .brand-accent {
  color: var(--aira-cyan) !important;
}
.aira-navbar .brand-year {
  color: var(--text-primary) !important;
  font-weight: 400;
  font-size: 1rem;
}

.aira-navbar .nav-link {
  color: var(--text-primary) !important;
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.5rem 0.85rem !important;
  border-radius: var(--radius);
  transition: var(--transition);
  position: relative;
}
.aira-navbar .nav-link:hover,
.aira-navbar .nav-link.active {
  color: var(--aira-white) !important;
  background: rgba(212, 175, 55, 0.12);
}

.aira-navbar .dropdown-menu {
  background: var(--surface-dark);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  box-shadow: 0 16px 40px rgba(15,23,42,0.1);
  padding: 0.4rem 0;
}
.aira-navbar .dropdown-item {
  color: var(--text-primary);
  font-size: 0.9rem;
  padding: 0.5rem 1rem;
}
.aira-navbar .dropdown-item:hover {
  background: rgba(212, 175, 55, 0.12);
  color: var(--aira-white);
}
.aira-navbar .dropdown-item.disabled {
  color: var(--text-muted) !important;
}
.aira-navbar .dropdown-divider {
  border-color: var(--aira-gray-200);
}

.aira-navbar .navbar-toggler {
  border: 1px solid var(--aira-gray-300);
  padding: 0.35rem 0.6rem;
  border-radius: var(--radius);
}
.aira-navbar .navbar-toggler:focus {
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.25);
}

/* Mobile collapse styling */
@media (max-width: 991.98px) {
  .aira-navbar .navbar-collapse {
    background: var(--surface-dark);
    border-radius: var(--radius-md);
    margin-top: 0.75rem;
    padding: 1rem;
    border: 1px solid rgba(255,255,255,0.08);
    box-shadow: var(--shadow-md);
  }
  .aira-navbar .nav-link {
    text-align: center;
    padding: 0.7rem 1rem !important;
  }
}

/* ===========================
   4. BUTTONS
   =========================== */
.btn-aira-primary {
  background: var(--grad-cyan);
  color: var(--aira-white);
  border: none;
  border-radius: var(--radius);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.6rem 1.4rem;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.btn-aira-primary:hover {
  color: var(--aira-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-cyan);
}

.btn-aira-secondary {
  background: transparent;
  color: var(--aira-cyan);
  border: 1px solid var(--aira-cyan);
  border-radius: var(--radius);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.6rem 1.4rem;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.btn-aira-secondary:hover {
  background: rgba(212, 175, 55, 0.10);
  color: var(--aira-white);
  transform: translateY(-2px);
}

/* Dark variant for light backgrounds */
.btn-aira-dark {
  background: var(--aira-navy);
  color: var(--aira-white);
  border: none;
  border-radius: var(--radius);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.6rem 1.4rem;
  transition: var(--transition);
}
.btn-aira-dark:hover {
  background: var(--aira-navy-light);
  color: var(--aira-white);
  transform: translateY(-2px);
}

/* ===========================
   5. HERO (Homepage)
   =========================== */
.aira-hero {
  position: relative;
  color: var(--aira-white);
  overflow: hidden;
  margin-top: 0;
  min-height: 740px;
  background-color: var(--aira-navy);
  box-shadow: inset 0 0 140px rgba(0,0,0,0.28);
}
.aira-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.75), rgba(0,0,0,0.75));
  z-index: 1;
  pointer-events: none;
}
.aira-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top left, rgba(212,175,55,0.14), transparent 28%),
              radial-gradient(circle at bottom right, rgba(212,175,55,0.18), transparent 28%);
  z-index: 2;
  pointer-events: none;
}
.aira-hero .hero-slider {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}
.aira-hero .hero-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0;
  animation: heroSlide 30s ease-in-out infinite;
}
.aira-hero .hero-slide:nth-child(1) { animation-delay: 0s; }
.aira-hero .hero-slide:nth-child(2) { animation-delay: 6s; }
.aira-hero .hero-slide:nth-child(3) { animation-delay: 12s; }
.aira-hero .hero-slide:nth-child(4) { animation-delay: 18s; }
.aira-hero .hero-slide:nth-child(5) { animation-delay: 24s; }
@keyframes heroSlide {
  0% { opacity: 0; transform: scale(1.04); }
  2%, 18% { opacity: 1; transform: scale(1); }
  20%, 100% { opacity: 0; transform: scale(0.98); }
}
.aira-hero .aira-hero-content {
  position: relative;
  z-index: 4;
  min-height: 740px;
  display: flex;
  align-items: center;
  padding: clamp(6.5rem, 10vw, 8.5rem) 0 clamp(4rem, 7vw, 6rem);
}
.aira-hero .hero-eyebrow {
  display: inline-flex;
  margin-bottom: 1rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.88);
}
.aira-hero .hero-title-label {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  color: rgba(255,255,255,0.95);
  font-weight: 500;
  margin-bottom: 0.75rem;
  max-width: 45rem;
}
.aira-hero .hero-shortcut {
  color: var(--aira-emerald);
  font-weight: 700;
}
.aira-hero .hero-title-main {
  font-size: clamp(2rem, 3.25vw, 3.7rem);
  line-height: 1.08;
  margin-bottom: 1rem;
  max-width: 76rem;
  margin-left: auto;
  margin-right: auto;
  font-weight: 700;
  color: var(--aira-emerald);
  text-align: center;
  text-wrap: balance;
}
.aira-hero .hero-copy {
  width: min(100%, 1120px);
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.aira-hero .hero-location {
  color: var(--text-secondary);
  font-size: 1rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.aira-hero .hero-cta {
  justify-content: center;
}
.aira-hero .hero-subtext {
  color: var(--text-primary);
  font-size: 1.05rem;
  margin-bottom: 1.25rem;
  max-width: 48rem;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.aira-hero h1 {
  font-size: clamp(2.7rem, 5vw, 4.75rem);
  line-height: 1.05;
  margin-bottom: 1.25rem;
  max-width: 68rem;
  color: var(--aira-white);
}
.aira-hero .hero-tagline {
  font-size: clamp(1rem, 1.7vw, 1.25rem);
  color: var(--text-primary);
  max-width: 58rem;
  margin-bottom: 2rem;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.aira-hero .hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}
.aira-hero .hero-metric-card {
  text-align: center;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
}
.aira-hero .metric-label {
  font-family: var(--font-mono);
  color: rgba(255,255,255,0.72);
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  margin-bottom: 0.35rem;
}
.aira-hero .metric-value {
  color: var(--aira-white);
  font-size: 1rem;
  font-weight: 700;
}
.aira-hero .hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.aira-hero .hero-badge-row {
  margin-top: 1.5rem;
}
.aira-hero .conference-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--text-primary);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  font-weight: 600;
}
.aira-hero .hero-badge-row .bi {
  font-size: 1rem;
}

/* ===========================
   6. HOMEPAGE CO-SPONSORS
   =========================== */
.ngcs-sponsors {
  position: relative;
  z-index: 3;
  padding: clamp(3rem, 5vw, 4.5rem) 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 0, rgba(212, 175, 55, 0.12), transparent 42%),
    #0a0a0a;
  border-top: 1px solid rgba(212, 175, 55, 0.28);
  border-bottom: 1px solid var(--aira-gray-200);
}
.ngcs-sponsors::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.22;
  background-image: linear-gradient(rgba(212, 175, 55, 0.12) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(212, 175, 55, 0.12) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: linear-gradient(to bottom, black, transparent 78%);
  mask-image: linear-gradient(to bottom, black, transparent 78%);
}
.ngcs-sponsors .container {
  position: relative;
  z-index: 1;
}
.ngcs-sponsors-heading {
  text-align: center;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}
.ngcs-sponsors-kicker {
  display: block;
  margin-bottom: 0.55rem;
  color: var(--aira-cyan);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}
.ngcs-sponsors-heading h2 {
  margin: 0;
  color: var(--aira-white);
  font-size: clamp(1.65rem, 3vw, 2.35rem);
  font-weight: 700;
}
.ngcs-sponsors-rule {
  display: block;
  width: 52px;
  height: 3px;
  margin: 1rem auto 0;
  background: var(--grad-cyan);
  border-radius: var(--radius-pill);
}
.ngcs-sponsors-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1rem, 2.5vw, 1.75rem);
  width: min(100%, 920px);
  margin: 0 auto;
}
.ngcs-sponsor-card {
  position: relative;
  display: grid;
  grid-template-columns: 150px 1fr;
  align-items: center;
  min-height: 190px;
  overflow: hidden;
  color: var(--aira-white);
  background: linear-gradient(135deg, #171717, #0d0d0d);
  border: 1px solid rgba(212, 175, 55, 0.28);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
}
.ngcs-sponsor-card:hover,
.ngcs-sponsor-card:focus-visible {
  color: var(--aira-white);
  border-color: var(--aira-cyan);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.48), 0 0 0 1px rgba(212, 175, 55, 0.16);
  transform: translateY(-4px);
}
.ngcs-sponsor-card:focus-visible {
  outline: 3px solid rgba(255, 215, 0, 0.32);
  outline-offset: 3px;
}
.ngcs-sponsor-logo {
  align-self: stretch;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 190px;
  padding: 1.35rem;
  background: #ffffff;
  border-right: 3px solid var(--aira-cyan);
}
.ngcs-sponsor-logo img {
  display: block;
  width: auto;
  max-width: 100%;
  max-height: 132px;
  object-fit: contain;
}
.ngcs-sponsor-logo-ieee img { max-width: 126px; }
.ngcs-sponsor-logo-bethlehem img { max-height: 140px; }
.ngcs-sponsor-details {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 1.5rem 2.7rem 1.5rem 1.5rem;
}
.ngcs-sponsor-details strong {
  color: var(--aira-emerald);
  font-family: var(--font-heading);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  line-height: 1.25;
}
.ngcs-sponsor-details span {
  color: var(--aira-white);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.ngcs-sponsor-link-icon {
  position: absolute;
  top: 1rem;
  right: 1rem;
  color: rgba(255, 255, 255, 0.55);
  transition: var(--transition);
}
.ngcs-sponsor-card:hover .ngcs-sponsor-link-icon { color: var(--aira-cyan-light); }

/* ===========================
   7. PAGE HERO (Interior pages)
   =========================== */
.aira-page-hero {
  position: relative;
  color: var(--text-primary);
  overflow: hidden;
  margin-top: -72px;
  padding: clamp(130px, 14vw, 180px) 0 clamp(48px, 5vw, 72px);
  background: linear-gradient(135deg, #080808 0%, #121212 60%, #080808 100%);
}
.aira-page-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-mesh);
  pointer-events: none;
}
.aira-page-hero .container { position: relative; z-index: 1; }
.aira-page-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--aira-white);
}
.aira-page-hero p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 750px;
  margin: 0 auto;
}
.aira-page-hero .btn { margin-top: 0.25rem; }

/* ===========================
   7. SECTIONS
   =========================== */
.aira-section {
  padding: clamp(3.5rem, 6vw, 5rem) 0;
  position: relative;
  z-index: 1;
}
.aira-section-light {
  background: #0a0a0a;
  border-top: 1px solid var(--aira-gray-200);
}
.aira-section-alt {
  background: #101010;
  border-top: 1px solid var(--aira-gray-200);
}
.aira-section-dark {
  background: #080808;
  color: var(--text-primary);
  border-top: 1px solid var(--aira-gray-200);
}

.aira-section-light,
.aira-section-alt,
.aira-section-dark {
  color: var(--text-primary);
}

.aira-section-light .text-secondary,
.aira-section-alt .text-secondary,
.aira-section-dark .text-secondary {
  color: #ffffff !important;
  text-align: center;
}

.aira-section p,
.aira-section li,
.aira-section .text-secondary,
.aira-section .small,
.aira-card p,
.aira-card li,
.aira-card-dark p,
.aira-card-dark li,
.aira-track-card p,
.aira-track-card li,
.section-desc {
  color: #ffffff !important;
  opacity: 1 !important;
  font-weight: 500;
  text-shadow: 0 0 1px rgba(255,255,255,0.25);
}

.aira-section-light .row.g-4.align-items-center,
.aira-section-alt .row.g-4.align-items-center,
.aira-section-dark .row.g-4.align-items-center {
  justify-content: center;
}

.aira-section-light .col-lg-6,
.aira-section-alt .col-lg-6,
.aira-section-dark .col-lg-6 {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* First section after hero needs no top border */
.aira-page-hero + .aira-section,
.aira-hero + .aira-section {
  border-top: none;
}
.aira-section-dark p,
.aira-section-dark li {
  color: #ffffff !important;
}
.aira-section-dark .text-secondary-dark {
  color: var(--text-secondary);
}

.aira-section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 1rem;
  position: relative;
  padding-bottom: 1rem;
  color: var(--text-primary);
}
.aira-section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 3px;
  background: var(--grad-cyan);
  border-radius: var(--radius-pill);
}
.aira-section-title.text-start::after {
  left: 0;
  transform: none;
}

.section-desc {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3rem;
  color: var(--text-secondary);
  font-size: 1.05rem;
}
.aira-section-dark .section-desc {
  color: var(--text-secondary);
}

/* ===========================
   8. CARDS
   =========================== */
.aira-card {
  background: var(--surface-dark);
  border-radius: var(--radius);
  padding: clamp(1.25rem, 2.5vw, 1.75rem);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(255, 215, 0, 0.08);
  transition: var(--transition);
}
.aira-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--aira-gray-300);
  transform: translateY(-2px);
}

/* Track card with blue left border */
.aira-track-card {
  background: #101010;
  border-radius: var(--radius);
  border-left: 4px solid var(--aira-emerald);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  border-top: 1px solid rgba(255, 215, 0, 0.08);
  border-right: 1px solid rgba(255, 215, 0, 0.08);
  border-bottom: 1px solid rgba(255, 215, 0, 0.08);
  height: 100%;
  transition: var(--transition);
}
.aira-track-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

/* Dark variant (light card with border) */
.aira-card-dark {
  background: #121212;
  border-radius: var(--radius);
  padding: 1.5rem;
  border: 1px solid rgba(255, 215, 0, 0.12);
  height: 100%;
  transition: var(--transition);
}
.aira-card-dark:hover {
  border-color: var(--aira-emerald);
  box-shadow: 0 0 20px rgba(212,175,55,0.12);
  transform: translateY(-2px);
}
.aira-card-dark p,
.aira-card-dark .fw-bold {
  color: var(--text-primary);
}

/* Feature card */
.aira-feature-card {
  text-align: center;
  padding: 2rem 1.5rem;
}
.aira-feature-card .feature-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--aira-emerald);
  background: rgba(212, 175, 55, 0.12);
  border-radius: var(--radius-lg);
  margin: 0 auto 1rem;
}
.aira-section-dark .aira-feature-card .feature-icon {
  background: rgba(212, 175, 55, 0.16);
}

/* ===========================
   9. TYPOGRAPHY UTILITIES
   =========================== */
.aira-mono-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--aira-emerald);
  font-weight: 500;
}

.aira-gradient-text {
  background: var(--grad-cyan);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===========================
   10. TABLES (Dates)
   =========================== */
.aira-date-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
.aira-date-table thead th {
  background: var(--aira-navy);
  color: var(--aira-white);
  font-family: var(--font-heading);
  font-weight: 600;
  padding: 0.75rem 1rem;
  border-bottom: 3px solid var(--aira-cyan-light);
  text-align: left;
}
.aira-date-table tbody td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid rgba(255, 215, 0, 0.08);
  vertical-align: middle;
  color: var(--text-primary);
}
.aira-date-table tbody tr:hover {
  background: rgba(255, 215, 0, 0.06);
}
.aira-date-table .date-passed {
  text-decoration: line-through;
  color: var(--text-muted);
}
.aira-date-table .date-new {
  color: var(--aira-cyan);
  font-weight: 600;
}

/* ===========================
   11. CALLOUTS
   =========================== */
.aira-callout {
  border-left: 4px solid var(--aira-emerald);
  background: rgba(212,175,55,0.08);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}
.aira-callout-warning {
  border-left-color: #b8860b;
  background: rgba(255,215,0,0.12);
}
.aira-callout-danger {
  border-left-color: #ef4444;
  background: rgba(239, 68, 68, 0.05);
}

/* ===========================
   12. COMMITTEE
   =========================== */
.aira-committee-group {
  margin-bottom: 3rem;
}
.aira-committee-group h3 {
  font-size: 1.3rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--aira-emerald);
  display: inline-block;
}
.aira-member-item {
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(255, 215, 0, 0.08);
}
.aira-member-name {
  font-weight: 600;
  color: var(--text-primary);
}
.aira-member-affiliation {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* ===========================
   13. CONTACT
   =========================== */
.aira-contact-card {
  background: var(--surface-dark);
  border-radius: var(--radius);
  border: 1px solid var(--aira-gray-200);
  padding: 2rem;
  text-align: center;
  height: 100%;
  transition: var(--transition);
}
.aira-contact-card:hover {
  border-color: var(--aira-emerald);
  box-shadow: var(--shadow-md);
}
.aira-contact-card i {
  font-size: 2rem;
  color: var(--aira-emerald);
  margin-bottom: 1rem;
}

/* FAQ Accordion */
.accordion-item {
  background: #101010;
  border: 1px solid var(--aira-gray-200);
  border-radius: var(--radius) !important;
  margin-bottom: 0.75rem;
  overflow: hidden;
}
.accordion-button {
  background: #121212;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  box-shadow: none !important;
}
.accordion-button:not(.collapsed) {
  background: rgba(212,175,55,0.08);
  color: var(--text-primary);
}
.accordion-button::after {
  filter: none;
}
.accordion-body {
  font-size: 0.93rem;
  line-height: 1.7;
}

/* ===========================
   14. VENUE
   =========================== */
.aira-venue-card {
  background: var(--surface-dark);
  border-radius: var(--radius);
  border: 1px solid var(--aira-gray-200);
  padding: 1.25rem;
  transition: var(--transition);
}
.aira-venue-card:hover {
  box-shadow: var(--shadow-md);
}

.venue-map { min-height: 360px; }

.venue-info-card {
  background: var(--surface-dark);
  border-radius: var(--radius);
  border: 1px solid var(--aira-gray-200);
  padding: 1.5rem;
  text-align: center;
  transition: var(--transition);
}
.venue-info-card:hover { border-color: var(--aira-cyan); }
.venue-info-card i { font-size: 2rem; color: var(--aira-cyan); display: block; margin-bottom: 0.75rem; }
.venue-info-card h4 { font-size: 1rem; margin-bottom: 0.5rem; }
.venue-info-card p { font-size: 0.9rem; color: var(--text-secondary); }

/* Gallery */
.gallery-section { background: var(--surface-alt); }
.gallery-thumb {
  display: block; border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-sm); transition: var(--transition); cursor: pointer;
}
.gallery-thumb:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.gallery-thumb img { width: 100%; height: 200px; object-fit: cover; transition: transform 0.5s ease; }
.gallery-thumb:hover img { transform: scale(1.08); }
.gallery-caption {
  position: absolute; left: 0; right: 0; bottom: 0;
  background: linear-gradient(to top, rgba(0,0,0,.8), transparent);
  color: #fff; padding: 20px 10px 10px; font-size: 0.85rem;
  opacity: 0; transition: opacity 0.3s ease;
}
.gallery-thumb:hover .gallery-caption { opacity: 1; }

/* Gallery Modal — stays dark for image viewing */
.modal-gallery { background: rgba(2, 6, 23, 0.95); }
.modal-gallery .modal-content { background: transparent; border: none; }
.modal-gallery .modal-body { padding: 0; }
.gallery-modal-img {
  max-height: 85vh; max-width: 100%; width: auto;
  margin: 0 auto; display: block; border-radius: var(--radius);
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}
.gallery-control-btn {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: rgba(255,255,255,0.15); border: none; color: #fff;
  width: 48px; height: 48px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(5px); transition: var(--transition); z-index: 10;
}
.gallery-control-btn:hover { background: rgba(255,255,255,0.25); }
.gallery-control-prev { left: 20px; }
.gallery-control-next { right: 20px; }
.gallery-close-btn {
  position: absolute; top: 20px; right: 20px;
  background: rgba(255,255,255,0.15); border: none; color: #fff;
  width: 40px; height: 40px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(5px); transition: var(--transition); z-index: 10; cursor: pointer;
}
.gallery-close-btn:hover { background: rgba(255,255,255,0.25); transform: rotate(90deg); }
.gallery-counter {
  position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: rgba(0,0,0,0.6); color: #fff;
  padding: 5px 15px; border-radius: var(--radius-pill); font-size: 0.85rem;
  font-family: var(--font-mono); backdrop-filter: blur(5px); z-index: 10;
}

/* Recommended places */
.place-card-img-wrapper { border-radius: var(--radius); overflow: hidden; margin-bottom: 0.9rem; }
.place-card-img {
  width: 100%; height: 190px; object-fit: cover; display: block;
  transition: transform 0.4s ease, filter 0.4s ease;
}
.aira-card:hover .place-card-img { transform: scale(1.05); }

.note-callout {
  border-left: 4px solid var(--aira-emerald);
  background: rgba(212,175,55,0.08);
  border-radius: var(--radius);
  padding: 1rem;
}

/* ===========================
   15. FOOTER — Light
   =========================== */
.aira-footer {
  background: var(--surface-dark);
  color: var(--text-primary);
}
.aira-footer .footer-main {
  padding: 3.5rem 0 2rem;
}
.aira-footer .footer-brand {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}
.aira-footer .brand-accent {
  color: var(--aira-cyan);
}
.aira-footer .footer-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}
.aira-footer .footer-contact p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}
.aira-footer .footer-contact a {
  color: var(--aira-cyan);
}
.aira-footer .footer-contact a:hover {
  color: var(--aira-cyan-light);
}

.aira-footer .footer-heading {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--aira-cyan);
  margin-bottom: 1rem;
  font-weight: 600;
}

.aira-footer .footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.aira-footer .footer-links li {
  margin-bottom: 0.5rem;
}
.aira-footer .footer-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: var(--transition);
}
.aira-footer .footer-links a:hover {
  color: var(--aira-cyan);
  padding-left: 4px;
}
.aira-footer .text-muted-footer {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.aira-footer .footer-dates {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.aira-footer .date-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--aira-gray-200);
}
.aira-footer .date-row span { color: var(--text-secondary); }
.aira-footer .date-row strong { color: var(--text-primary); }

.aira-footer .footer-bottom {
  padding: 1rem 0;
  border-top: 1px solid var(--aira-gray-200);
  font-size: 0.85rem;
  color: var(--text-muted);
}
.aira-footer .footer-bottom a {
  color: var(--text-secondary);
}
.aira-footer .footer-bottom a:hover {
  color: var(--aira-cyan);
}

/* ===========================
   16. BACK TO TOP
   =========================== */
.back-to-top {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  background: #1a1a1a;
  color: var(--aira-emerald);
  border: 1px solid rgba(255, 215, 0, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  z-index: 1050;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: var(--transition);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  background: var(--aira-emerald);
  color: var(--aira-white);
  border-color: var(--aira-emerald);
}

/* ===========================
   17. COUNTDOWN
   =========================== */
.aira-countdown {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}
.aira-countdown .countdown-unit {
  text-align: center;
  min-width: 70px;
}
.aira-countdown .countdown-value {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--aira-emerald);
  display: block;
  line-height: 1;
}
.aira-countdown .countdown-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* ===========================
   18. CONFERENCE BADGE
   =========================== */
.conference-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(212, 175, 55, 0.08);
  border: 1px solid rgba(212, 175, 55, 0.18);
  border-radius: var(--radius);
  padding: 0.4rem 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--aira-emerald);
}

/* ===========================
   19. SUBMISSION GUIDELINES
   =========================== */
.guideline-item {
  display: flex;
  gap: 1rem;
  padding: 1.25rem;
  border: 1px solid var(--aira-gray-200);
  border-radius: var(--radius);
  margin-bottom: 1rem;
  transition: var(--transition);
}
.guideline-item:hover {
  border-color: var(--aira-cyan);
  box-shadow: var(--shadow-sm);
}
.guideline-item .gi-icon {
  font-size: 1.5rem;
  color: var(--aira-cyan);
  flex-shrink: 0;
}
.guideline-item h5 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}
.guideline-item p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin: 0;
}

/* ===========================
   20. REGISTRATION
   =========================== */
.aira-fee-table {
  width: 100%;
  border-collapse: collapse;
}
.aira-fee-table thead th {
  background: var(--aira-navy);
  color: var(--aira-white);
  padding: 0.75rem 1rem;
  font-family: var(--font-heading);
  font-weight: 600;
  border-bottom: 3px solid var(--aira-cyan-light);
}
.aira-fee-table tbody td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--aira-gray-200);
}
.aira-fee-table tbody tr:hover {
  background: var(--aira-gray-50);
}

/* ===========================
   21. COMING SOON
   =========================== */
.coming-soon-section {
  text-align: center;
  padding: 4rem 1.5rem;
}
.coming-soon-section .coming-icon {
  font-size: 4rem;
  color: var(--aira-cyan);
  margin-bottom: 1.5rem;
  display: block;
}
.coming-soon-section h2 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

/* ===========================
   22. RESPONSIVE
   =========================== */
@media (max-width: 991.98px) {
  body { padding-top: 64px; }
  .aira-hero { margin-top: 0; padding: 0; }
  .aira-hero .aira-hero-content { padding: clamp(5rem, 12vw, 7rem) 0 clamp(3rem, 7vw, 5rem); }
  .aira-page-hero { margin-top: 0; padding: clamp(4rem, 10vw, 6rem) 0 clamp(44px, 5vw, 64px); }
}

@media (max-width: 768px) {
  body { padding-top: 60px; }

  .aira-hero { margin-top: 0; padding: 0; }
  .aira-hero .aira-hero-content { padding: 4.5rem 0 3rem; }
  .aira-hero .hero-title-main,
  .aira-hero h1 { font-size: clamp(1.8rem, 8vw, 2.45rem); }
  .aira-hero .hero-metrics { grid-template-columns: 1fr; }

  .aira-page-hero { margin-top: 0; padding: clamp(3.5rem, 10vw, 5rem) 0 clamp(40px, 5vw, 56px); }
  .aira-page-hero h1 { font-size: 1.8rem; }

  .aira-section-title { font-size: 1.5rem; }

  .ngcs-sponsors-grid { grid-template-columns: 1fr; }
  .ngcs-sponsor-card { min-height: 160px; }
  .ngcs-sponsor-logo { min-height: 160px; }

  .hero-info-cards { flex-direction: column; }

  .aira-countdown .countdown-value { font-size: 1.5rem; }

  .gallery-control-btn { width: 40px; height: 40px; }
  .gallery-control-prev { left: 10px; }
  .gallery-control-next { right: 10px; }
  .gallery-thumb img { height: 150px; }
}

@media (max-width: 480px) {
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn { text-align: center; justify-content: center; }

  .aira-footer .footer-main { padding: 2.5rem 0 1.5rem; }

  .ngcs-sponsor-card {
    grid-template-columns: 112px 1fr;
    min-height: 145px;
  }
  .ngcs-sponsor-logo {
    min-height: 145px;
    padding: 1rem;
  }
  .ngcs-sponsor-logo img { max-height: 108px; }
  .ngcs-sponsor-logo-ieee img { max-width: 94px; }
  .ngcs-sponsor-logo-bethlehem img { max-height: 112px; }
  .ngcs-sponsor-details { padding: 1.2rem 2rem 1.2rem 1rem; }
}

@media (prefers-reduced-motion: reduce) {
  .aira-hero .hero-slide { animation: none; }
  .aira-hero .hero-slide:first-child { opacity: 1; transform: none; }
}