:root {
  --bg: #0a0d0b;
  --bg-raised: #10140f;
  --line: rgba(57, 255, 136, 0.14);
  --line-strong: rgba(57, 255, 136, 0.3);
  --text: #e9f2ec;
  --text-dim: #9db3a6;
  --accent: #39ff88;
  --accent-dim: #22c55e;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Space Grotesk", ui-sans-serif, system-ui, sans-serif;
  --max: 880px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; }

.grid-overlay {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 90%);
  opacity: 0.6;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 28px;
  backdrop-filter: blur(8px);
  background: linear-gradient(to bottom, rgba(10, 13, 11, 0.9), rgba(10, 13, 11, 0));
}

.wordmark {
  display: flex;
  align-items: baseline;
  gap: 6px;
  text-decoration: none;
  font-family: var(--mono);
  font-weight: 500;
  letter-spacing: 0.02em;
  font-size: 20px;
}
.wordmark-h {
  color: var(--accent);
  font-weight: 700;
}
.wordmark-h sup {
  font-size: 0.55em;
  margin-left: 1px;
}
.wordmark-atx {
  color: var(--text-dim);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 3px;
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  cursor: pointer;
}
.btn:active { transform: translateY(1px); }

.btn-solid {
  background: var(--accent);
  color: #06130a;
}
.btn-solid:hover { background: #6bffab; }

.btn-outline {
  border-color: var(--line-strong);
  color: var(--text);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

.btn-ghost {
  color: var(--text-dim);
  border-color: transparent;
}
.btn-ghost:hover { color: var(--accent); }

.nav-cta { font-size: 13px; padding: 9px 16px; }

.hero {
  position: relative;
  z-index: 1;
  min-height: 92vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px 60px;
  overflow: hidden;
}

.hero-mark {
  display: flex;
  justify-content: center;
  perspective: 1400px;
  margin: 0 0 28px;
}

.hero-mark-spin {
  position: relative;
  width: min(52vw, 260px);
  transform-style: preserve-3d;
  animation: hero-spin 12s linear infinite;
}

.hero-mark-face {
  backface-visibility: hidden;
}

.hero-mark-front {
  position: relative;
}

.hero-mark-back {
  position: absolute;
  inset: 0;
  transform: rotateY(180deg);
}

.hero-mark-svg {
  display: block;
  width: 100%;
  height: auto;
}

@keyframes hero-spin {
  from { transform: rotateY(0deg); }
  to { transform: rotateY(360deg); }
}

@media (prefers-reduced-motion: reduce) {
  .hero-mark-spin { animation: none; transform: rotateY(-14deg) rotateX(4deg); }
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 720px;
  text-align: center;
}

.eyebrow {
  font-family: var(--mono);
  color: var(--accent);
  font-size: 13px;
  letter-spacing: 0.06em;
  margin: 0 0 18px;
  opacity: 0.85;
}

.hero h1 {
  font-size: clamp(48px, 9vw, 88px);
  line-height: 1.02;
  margin: 0 0 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.hero h1 .accent {
  color: var(--accent);
}

.hero-sub {
  font-size: clamp(16px, 2.2vw, 19px);
  line-height: 1.55;
  color: var(--text-dim);
  max-width: 560px;
  margin: 0 auto 36px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

section.about,
section.signup,
section.organizers {
  position: relative;
  z-index: 1;
  padding: 90px 24px;
  border-top: 1px solid var(--line);
}

.section-inner {
  max-width: var(--max);
  margin: 0 auto;
}

h2 {
  display: flex;
  align-items: baseline;
  gap: 14px;
  font-size: clamp(26px, 4vw, 34px);
  margin: 0 0 28px;
  font-weight: 600;
}

.tag {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--accent);
  border: 1px solid var(--line-strong);
  border-radius: 3px;
  padding: 3px 8px;
  font-weight: 500;
}

.about p, .signup-sub {
  font-size: 17px;
  line-height: 1.7;
  color: var(--text-dim);
  max-width: 680px;
}

.pull-quote {
  font-family: var(--mono);
  color: var(--accent) !important;
  font-size: 20px !important;
  margin-top: 32px !important;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.gallery-item {
  position: relative;
  margin: 0;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--bg-raised);
}

.gallery-item img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.55) contrast(1.05);
  transition: filter 0.35s ease, transform 0.35s ease;
}

.gallery-item:hover img {
  filter: grayscale(0);
  transform: scale(1.04);
}

.gallery-item::before,
.gallery-item::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border: 1.5px solid var(--accent);
  opacity: 0.85;
  pointer-events: none;
}
.gallery-item::before {
  top: 8px;
  left: 8px;
  border-right: none;
  border-bottom: none;
}
.gallery-item::after {
  bottom: 8px;
  right: 8px;
  border-left: none;
  border-top: none;
}

@media (max-width: 720px) {
  .gallery-grid {
    grid-template-columns: 1fr;
  }
}

.mc-embed-slot {
  margin-top: 28px;
  padding: 28px;
  border: 1px dashed var(--line-strong);
  border-radius: 6px;
  background: var(--bg-raised);
}

.mc-placeholder-note {
  margin: 0;
  font-family: var(--mono);
  font-size: 13.5px;
  color: var(--text-dim);
  line-height: 1.6;
}
.mc-placeholder-note code {
  color: var(--accent);
  background: rgba(57, 255, 136, 0.08);
  padding: 2px 5px;
  border-radius: 3px;
}

/* Re-skin Mailchimp's classic embed to fit the dark theme. Mailchimp ships
   its own stylesheet + inline <style> (white background, fixed 600px width,
   Helvetica) inside the embed snippet itself — !important overrides beat
   that cascade without touching the pasted embed code, so re-copying a
   fresh snippet from Mailchimp later still works. */
#mc_embed_signup {
  background: transparent !important;
  width: 100% !important;
  max-width: 480px !important;
  font-family: var(--sans) !important;
  font-size: 15px !important;
  color: var(--text) !important;
  clear: none !important;
}
#mc_embed_signup #mc_embed_signup_scroll h2 {
  font-family: var(--mono) !important;
  font-size: 16px !important;
  color: var(--accent) !important;
  margin: 0 0 14px !important;
  font-weight: 600 !important;
}
#mc_embed_signup .indicates-required,
#mc_embed_signup label {
  color: var(--text-dim) !important;
  font-size: 13px !important;
}
#mc_embed_signup .asterisk {
  color: var(--accent) !important;
}
#mc_embed_signup .mc-field-group {
  display: block;
  margin-bottom: 14px !important;
  width: 100% !important;
}
#mc_embed_signup .mc-field-group label {
  display: block;
  margin-bottom: 6px !important;
}
#mc_embed_signup input.text,
#mc_embed_signup input[type="email"],
#mc_embed_signup input[type="text"] {
  background: var(--bg) !important;
  border: 1px solid var(--line-strong) !important;
  color: var(--text) !important;
  font-family: var(--sans) !important;
  font-size: 15px !important;
  padding: 11px 14px !important;
  border-radius: 3px !important;
  outline: none !important;
  width: 100% !important;
  height: auto !important;
  display: block;
}
#mc_embed_signup input.text:focus,
#mc_embed_signup input[type="email"]:focus,
#mc_embed_signup input[type="text"]:focus {
  border-color: var(--accent) !important;
}
#mc_embed_signup .button,
#mc_embed_signup input[type="submit"] {
  background: var(--accent) !important;
  color: #06130a !important;
  border: none !important;
  font-family: var(--mono) !important;
  font-weight: 600 !important;
  font-size: 14px !important;
  padding: 12px 22px !important;
  border-radius: 3px !important;
  cursor: pointer !important;
  width: auto !important;
  height: auto !important;
}
#mc_embed_signup .button:hover,
#mc_embed_signup input[type="submit"]:hover {
  background: #6bffab !important;
}
#mc_embed_signup .response {
  font-family: var(--mono) !important;
  font-size: 13px !important;
  margin-top: 12px !important;
}
#mc_embed_signup #mce-error-response {
  color: #ff6b6b !important;
}
#mc_embed_signup #mce-success-response {
  color: var(--accent) !important;
}

.organizer-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}
.organizer-list li {
  border-radius: 6px;
  overflow: hidden;
}
.organizer-link {
  display: block;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 22px 20px;
  background: var(--bg-raised);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s ease, transform 0.15s ease, background 0.15s ease;
}
.organizer-link:hover {
  border-color: var(--accent);
  background: rgba(57, 255, 136, 0.06);
  transform: translateY(-2px);
}
.org-name {
  display: block;
  font-weight: 600;
  font-size: 17px;
  margin-bottom: 4px;
}
.org-co {
  display: block;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
}

.site-footer {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 32px 24px 44px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text-dim);
}
.footer-dot { color: var(--line-strong); }

@media (max-width: 640px) {
  .site-header { padding: 16px 18px; }
  section.about, section.signup, section.organizers { padding: 64px 18px; }
  .hero { padding: 64px 18px 44px; }
}