/* Reset & Base */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, sans-serif;
  background: #0a0a14;
  color: #c9cdd4;
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* Animated Canvas Background */
#bg-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* Background Orbs */
.orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}
.orb1 { width: 500px; height: 500px; background: #7c3aed; opacity: .1; top: -100px; right: -100px; animation: float1 20s ease-in-out infinite; }
.orb2 { width: 400px; height: 400px; background: #2dd4bf; opacity: .07; top: 50%; left: -150px; animation: float2 25s ease-in-out infinite; }
.orb3 { width: 350px; height: 350px; background: #ec4899; opacity: .06; bottom: -50px; right: 20%; animation: float3 18s ease-in-out infinite; }

@keyframes float1 {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(-40px, 60px); }
  66% { transform: translate(30px, -40px); }
}
@keyframes float2 {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(50px, -30px); }
  66% { transform: translate(-30px, 50px); }
}
@keyframes float3 {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(-60px, -40px); }
  66% { transform: translate(40px, 30px); }
}

/* Nav */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(10, 10, 20, .85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,.05);
}
.nav-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-size: 20px;
  font-weight: 800;
  color: #f0f4f8;
}
.logo-accent {
  background: linear-gradient(90deg, #7c3aed, #2dd4bf);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: #6b7280;
  text-decoration: none;
  transition: color .2s;
}
.nav-links a:hover { color: #f0f4f8; }
.btn-join {
  padding: 8px 20px !important;
  border-radius: 20px;
  background: linear-gradient(135deg, #7c3aed, #2dd4bf) !important;
  color: #fff !important;
  font-weight: 600 !important;
  font-size: 13px !important;
  transition: opacity .2s;
}
.btn-join:hover { opacity: .9; }

/* Hero */
.hero {
  position: relative;
  z-index: 1;
  max-width: 960px;
  margin: 0 auto;
  padding: 160px 24px 80px;
  text-align: center;
}
.pill {
  display: inline-block;
  padding: 6px 20px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  color: #2dd4bf;
  letter-spacing: 3px;
  border: 1px solid rgba(45, 212, 191, .3);
  background: rgba(45, 212, 191, .08);
  margin-bottom: 28px;
}
.hero h1 {
  font-size: clamp(36px, 6vw, 56px);
  font-weight: 800;
  color: #f0f4f8;
  line-height: 1.12;
  margin-bottom: 20px;
}
.gradient-text {
  background: linear-gradient(90deg, #7c3aed, #2dd4bf, #ec4899);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 16px;
  color: #6b7280;
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.7;
}
/* Availability Banner */
.availability-banner {
  max-width: 520px;
  margin: 0 auto 32px;
}
.availability-banner a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 24px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(45, 212, 191, .08), rgba(124, 58, 237, .08));
  border: 1px solid rgba(45, 212, 191, .25);
  text-decoration: none;
  color: #c9cdd4;
  font-size: 14px;
  transition: all .25s;
}
.availability-banner a:hover {
  border-color: rgba(45, 212, 191, .5);
  background: rgba(45, 212, 191, .12);
}
.availability-banner a strong { color: #2dd4bf; }
.avail-icon { font-size: 18px; }
.avail-arrow {
  color: #2dd4bf;
  font-size: 18px;
  transition: transform .2s;
}
.availability-banner a:hover .avail-arrow { transform: translateX(3px); }

/* Session feedback survey banner */
.survey-banner {
  max-width: 520px;
  margin: 0 auto 32px;
}
.survey-banner a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 24px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(124, 58, 237, .1), rgba(236, 72, 153, .06));
  border: 1px solid rgba(124, 58, 237, .35);
  text-decoration: none;
  color: #c9cdd4;
  font-size: 14px;
  transition: all .25s;
}
.survey-banner a:hover {
  border-color: rgba(167, 139, 250, .55);
  background: rgba(124, 58, 237, .14);
}
.survey-banner a strong { color: #a78bfa; }
.survey-icon { font-size: 18px; }
.survey-arrow {
  color: #a78bfa;
  font-size: 18px;
  transition: transform .2s;
}
.survey-banner a:hover .survey-arrow { transform: translateX(3px); }

/* Session description & CTA text */
.session-desc {
  font-size: 14px;
  color: #6b7280;
  line-height: 1.65;
  margin-bottom: 20px;
}
.session-cta-text {
  font-size: 13px;
  color: #6b7280;
  margin-top: 16px;
  font-style: italic;
}
.session-link.highlight {
  background: rgba(45, 212, 191, .1);
  border-color: rgba(45, 212, 191, .3);
  color: #2dd4bf;
}
.session-link.highlight:hover {
  background: rgba(45, 212, 191, .18);
  border-color: rgba(45, 212, 191, .5);
}

.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn-primary {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 24px;
  background: linear-gradient(135deg, #7c3aed, #06b6d4, #ec4899);
  background-size: 200% 200%;
  animation: glow-shift 5s ease infinite;
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  text-decoration: none;
  transition: opacity .2s;
}
.btn-primary:hover { opacity: .9; }
@keyframes glow-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
.btn-secondary {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 24px;
  border: 1px solid rgba(124, 58, 237, .3);
  color: #a78bfa;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  transition: all .2s;
}
.btn-secondary:hover {
  border-color: rgba(124, 58, 237, .6);
  background: rgba(124, 58, 237, .08);
}

/* Sections */
.section {
  position: relative;
  z-index: 1;
  padding: 80px 24px;
}
.section-inner { max-width: 960px; margin: 0 auto; }
.section-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 4px;
  color: #6b7280;
  margin-bottom: 12px;
}
.section h2 {
  font-size: 32px;
  font-weight: 800;
  color: #f0f4f8;
  margin-bottom: 40px;
}

/* About Grid */
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}
.about-card {
  padding: 28px 24px;
  border-radius: 16px;
  background: rgba(255, 255, 255, .03);
  border: 1px solid rgba(255, 255, 255, .06);
  transition: border-color .2s;
}
.about-card:hover { border-color: rgba(124, 58, 237, .3); }
.about-icon { font-size: 28px; margin-bottom: 14px; }
.about-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: #f0f4f8;
  margin-bottom: 8px;
}
.about-card p { font-size: 14px; color: #6b7280; line-height: 1.6; }

/* Session Cards */
.session-card {
  padding: 32px;
  border-radius: 20px;
  background: rgba(255, 255, 255, .03);
  border: 1px solid rgba(255, 255, 255, .06);
  margin-bottom: 20px;
}
.session-card.upcoming { border-color: rgba(45, 212, 191, .2); }
.session-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.session-number {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 3px;
  color: #a78bfa;
}
.session-status {
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 12px;
  color: #2dd4bf;
  border: 1px solid rgba(45, 212, 191, .3);
  background: rgba(45, 212, 191, .08);
}
.session-status.past {
  color: #6b7280;
  border-color: rgba(107, 114, 128, .3);
  background: rgba(107, 114, 128, .08);
}
.session-title {
  font-size: 22px;
  font-weight: 700;
  color: #f0f4f8;
  margin-bottom: 20px;
}
.session-details {
  display: flex;
  gap: 32px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.session-detail { display: flex; flex-direction: column; gap: 4px; }
.detail-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  color: #a78bfa;
  text-transform: uppercase;
}
.detail-value { font-size: 14px; color: #c9cdd4; }
.session-links { display: flex; gap: 12px; flex-wrap: wrap; }
.session-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: 12px;
  background: rgba(124, 58, 237, .08);
  border: 1px solid rgba(124, 58, 237, .2);
  color: #a78bfa;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: all .2s;
}
.session-link:hover {
  background: rgba(124, 58, 237, .15);
  border-color: rgba(124, 58, 237, .4);
}
.session-tbd {
  font-size: 14px;
  color: #6b7280;
}
.session-tbd a {
  color: #2dd4bf;
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* Resources Grid */
.resources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}
.resource-card {
  padding: 28px 24px;
  border-radius: 16px;
  background: rgba(255, 255, 255, .03);
  border: 1px solid rgba(255, 255, 255, .06);
  text-decoration: none;
  transition: all .2s;
}
.resource-card:hover {
  border-color: rgba(45, 212, 191, .3);
  background: rgba(45, 212, 191, .04);
}
.resource-icon { font-size: 28px; margin-bottom: 14px; }
.resource-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: #f0f4f8;
  margin-bottom: 8px;
}
.resource-card p { font-size: 14px; color: #6b7280; line-height: 1.6; }

/* CTA Section */
.cta-section {
  position: relative;
  z-index: 1;
  padding: 40px 24px 80px;
}
.cta-box {
  max-width: 640px;
  margin: 0 auto;
  padding: 48px 40px;
  border-radius: 24px;
  text-align: center;
  background: linear-gradient(135deg, rgba(124, 58, 237, .1), rgba(45, 212, 191, .08));
  border: 1px solid rgba(124, 58, 237, .2);
}
.cta-box h2 {
  font-size: 28px;
  font-weight: 800;
  color: #f0f4f8;
  margin-bottom: 12px;
}
.cta-box p {
  font-size: 15px;
  color: #6b7280;
  margin-bottom: 28px;
  line-height: 1.6;
}

/* Footer */
.footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 40px 24px;
  border-top: 1px solid rgba(255, 255, 255, .05);
}
.footer p { font-size: 14px; color: #3a3d4a; }
.footer-sub { font-size: 12px; color: #2a2d3a; margin-top: 6px; }

/* Responsive */
@media (max-width: 640px) {
  .nav-links a:not(.btn-join) { display: none; }
  .hero { padding: 120px 20px 60px; }
  .session-details { flex-direction: column; gap: 12px; }
  .hero-actions { flex-direction: column; align-items: center; }
}