:root {
  --bg: #0b0d12;
  --panel: #131722;
  --line: #262c3b;
  --text: #e8eaf0;
  --muted: #9aa3b5;
  --accent: #ff7a45;
  --accent-2: #ffc24b;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
  --sans: 'Space Grotesk', system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background:
    radial-gradient(60rem 30rem at 85% -10%, rgba(255, 122, 69, 0.18), transparent 60%),
    radial-gradient(40rem 25rem at -10% 20%, rgba(255, 194, 75, 0.08), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.55;
}

a { color: var(--accent-2); }

.top, main, footer {
  max-width: 64rem;
  margin: 0 auto;
  padding-left: 16px;
  padding-right: 16px;
}

.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 20px;
  padding-bottom: 20px;
}

.brand {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
}
.brand span, h1 span { color: var(--accent); }

.nav { display: flex; flex-wrap: wrap; gap: 6px 18px; justify-content: flex-end; }
.nav a {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
  text-decoration: none;
}
.nav a:hover { color: var(--text); }
.nav .account { color: var(--accent-2); }
.nav.icons { gap: 16px; align-items: center; }
.nav.icons a { display: inline-flex; padding: 4px; color: var(--muted); transition: color 0.15s ease; }
.nav.icons a:hover { color: var(--text); }

.hero { padding: 1rem 0 3rem; text-align: center; }
.hero .lede { margin-left: auto; margin-right: auto; }
.hero .countdown { margin-left: auto; margin-right: auto; }
.hero .actions { justify-content: center; }
.splash { max-width: 34rem; margin: 0 auto 1.5rem; }
.splash-art { display: block; width: 100%; height: auto; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; border: 0;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}

.kicker, .date, .note, .num, .countdown span {
  font-family: var(--mono);
}

.kicker {
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.8rem;
  margin: 0 0 1rem;
}

h1 {
  font-size: clamp(3rem, 12vw, 7.5rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
  margin: 0;
}
h1 em {
  font-style: normal;
  color: transparent;
  -webkit-text-stroke: 2px var(--text);
}

.date {
  font-size: clamp(1rem, 3vw, 1.35rem);
  margin: 1.5rem 0 0.75rem;
}

.lede {
  max-width: 38rem;
  color: var(--muted);
  font-size: 1.15rem;
  margin: 0 0 2.5rem;
}

.countdown {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  max-width: 30rem;
  margin-bottom: 2rem;
}
.countdown div {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 8px;
  text-align: center;
}
.countdown b {
  display: block;
  font-size: clamp(1.5rem, 6vw, 2.25rem);
  font-variant-numeric: tabular-nums;
}
.countdown span {
  color: var(--muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.actions { display: flex; flex-wrap: wrap; gap: 12px; }

.btn {
  display: inline-block;
  padding: 0.8rem 1.4rem;
  border-radius: 10px;
  border: 1px solid var(--line);
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.btn:hover { transform: translateY(-2px); border-color: var(--muted); }
.btn.primary {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-color: transparent;
  color: #1a0d05;
}

.btn.highlight {
  border-color: var(--accent);
  color: var(--accent-2);
  box-shadow: 0 0 0 1px var(--accent) inset, 0 0 24px rgba(255, 122, 69, 0.35);
}
.btn.highlight:hover { border-color: var(--accent-2); }

.note { color: var(--muted); font-size: 0.85rem; margin-top: 1rem; }

h2 {
  font-size: 1.75rem;
  letter-spacing: -0.02em;
  margin: 0 0 1.5rem;
}

.agenda, .faq, .cta-grid {
  border-top: 1px solid var(--line);
  padding: 3rem 0;
}

.agenda ol { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.agenda li {
  display: flex;
  gap: 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
}
.num { color: var(--accent); font-weight: 600; padding-top: 2px; }
.tag {
  font-family: var(--mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-2);
  margin: 0 0 4px !important;
}
.agenda h3 { margin: 0 0 4px; font-size: 1.15rem; }
.agenda li.open-slot { padding: 0; background: transparent; border: 2px dashed var(--accent); }
.open-slot a { display: flex; gap: 18px; padding: 20px; width: 100%; color: var(--text); text-decoration: none; border-radius: 12px; }
.open-slot a:hover { background: rgba(255, 122, 69, 0.08); }
.open-slot h3 { color: var(--accent-2); }
.agenda p { margin: 0; color: var(--muted); }

.faq dl { margin: 0; display: grid; gap: 1.25rem; max-width: 40rem; }
.faq dt { font-weight: 700; }
.faq dd { margin: 4px 0 0; color: var(--muted); }

footer {
  border-top: 1px solid var(--line);
  padding-top: 2rem;
  padding-bottom: 3rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.cta-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); gap: 14px; }
.cta {
  display: block;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
  color: var(--text);
  text-decoration: none;
  transition: border-color 0.15s ease;
}
.cta:hover { border-color: var(--accent); }
.cta h3 { margin: 0 0 4px; font-size: 1.15rem; }
.cta p { margin: 0; color: var(--muted); }

/* Inner pages and forms */
.page { padding: 3rem 0; max-width: 40rem; }
.page-title { font-size: clamp(2.25rem, 8vw, 3.5rem); margin-bottom: 1rem; }
.page .lede { margin-bottom: 2rem; }
.form { display: grid; gap: 14px; margin-bottom: 2rem; }
.form label { display: block; font-weight: 500; }
.form label > input, .form label > textarea, .form label > select { display: block; margin-top: 6px; }
.form input, .form textarea, .form select {
  width: 100%;
  font: inherit;
  font-weight: 400;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.7rem 0.85rem;
}
.form input:focus, .form textarea:focus, .form select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.opt, .hint { color: var(--muted); font-weight: 400; font-size: 0.85rem; }
.hint { margin: -4px 0 0; }
button.btn { font: inherit; font-weight: 500; cursor: pointer; background: transparent; }
button.btn.primary { background: linear-gradient(90deg, var(--accent), var(--accent-2)); }
button.btn:disabled { opacity: 0.6; cursor: wait; transform: none; }
.error { color: #ff8a8a; margin: 0; }
.ok {
  background: rgba(255, 194, 75, 0.08);
  border: 1px solid rgba(255, 194, 75, 0.35);
  border-radius: 12px;
  padding: 14px 16px;
  margin: 0 0 1.5rem;
}
.ok p { margin: 0.25rem 0; }
[hidden] { display: none !important; }

.offers { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.offers li {
  display: flex; gap: 16px; align-items: center; justify-content: space-between; flex-wrap: wrap;
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px;
}
.offers li.empty { color: var(--muted); display: block; }
.offers h3 { margin: 0 0 4px; font-size: 1.15rem; }
.offers p { margin: 0 0 6px; color: var(--muted); }
.offers li > div { flex: 1 1 18rem; }
.code { font-family: var(--mono); font-size: 0.85rem; }
.copy {
  font: inherit; font-weight: 600; color: var(--accent-2); cursor: pointer;
  background: rgba(255, 194, 75, 0.08); border: 1px dashed var(--accent-2); border-radius: 8px; padding: 2px 8px;
}
.copy.copied::after { content: ' ✓ copied'; color: var(--muted); font-weight: 400; }

.oauth { display: grid; gap: 10px; max-width: 24rem; margin-bottom: 1.5rem; }
.oauth[hidden] { display: none !important; }
.oauth-btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; background: var(--panel) !important; }
.or { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 0.85rem; margin: 6px 0 0; }
.or::before, .or::after { content: ''; flex: 1; border-top: 1px solid var(--line); }

.prose h2 { font-size: 1.25rem; margin: 2rem 0 0.5rem; }
.prose p, .prose li { color: var(--muted); }
.prose b { color: var(--text); }
.prose ul { padding-left: 1.2rem; display: grid; gap: 6px; }

@media (prefers-reduced-motion: reduce) {
  .btn { transition: none; }
  .btn:hover { transform: none; }
}

/* /setup (superusers only) */
.setup h2 { margin-top: 2.5rem; }
.setup-status { padding-left: 1.2rem; margin: 0 0 1rem; }
.setup-steps { padding-left: 1.2rem; display: grid; gap: 10px; margin: 0 0 1.25rem; }
.setup code { font-family: 'JetBrains Mono', monospace; font-size: 0.85rem; word-break: break-all; }
.copy-row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 8px; color: var(--muted); }
.copy-row code { color: var(--text); }
.btn.copy { padding: 2px 10px; font-size: 0.8rem; }

/* Top nav sign-in / dashboard chip */
.nav.icons a.chip {
  padding: 5px 14px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 500;
}
.nav.icons a.chip:hover { border-color: var(--accent-2); color: var(--accent-2); }

/* Attendee dashboard */
.dashboard h2 { margin-top: 2.5rem; }
.dashboard .actions { margin-bottom: 1rem; }
.dashboard .offers { margin-bottom: 16px; }
.status {
  flex: none;
  align-self: flex-start;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--muted);
  color: var(--muted);
  font-size: 0.8rem;
  white-space: nowrap;
}
.status-accepted { border-color: #5fd38d; color: #5fd38d; }
.status-waitlisted, .status-reviewing { border-color: var(--accent-2); color: var(--accent-2); }

/* Sponsors */
.sponsors h2 { margin-top: 2.5rem; }
.sponsor-grid { list-style: none; margin: 0 0 1.5rem; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr)); gap: 14px; }
.sponsor-grid li { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; }
.sponsor-grid li.open-slot { background: transparent; border: 2px dashed var(--accent); }
.sponsor-grid a { display: flex; flex-direction: column; gap: 4px; justify-content: center; min-height: 6.5rem; padding: 18px 20px; color: var(--text); text-decoration: none; border-radius: 12px; }
.sponsor-grid a:hover { background: rgba(255, 122, 69, 0.08); }
.sponsor-grid span { color: var(--muted); font-size: 0.9rem; }
.sponsor-grid .open-slot b { color: var(--accent-2); }
.status-confirmed { border-color: #5fd38d; color: #5fd38d; }
.status-talking { border-color: var(--accent-2); color: var(--accent-2); }

/* Read-only sponsorship application */
.application { display: grid; grid-template-columns: max-content 1fr; gap: 8px 18px; margin: 1.25rem 0 2rem; padding: 18px 20px; background: var(--panel); border: 1px solid var(--line); border-radius: 14px; }
.application dt { color: var(--muted); }
.application dd { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; }
@media (max-width: 480px) { .application { grid-template-columns: 1fr; gap: 2px; } .application dd { margin-bottom: 8px; } }

/* Agenda talks link to their pages */
.agenda li.talk { padding: 0; }
.agenda li.talk a { display: flex; gap: 18px; padding: 20px; width: 100%; color: var(--text); text-decoration: none; border-radius: 12px; }
.agenda li.talk a:hover { background: rgba(255, 122, 69, 0.08); }
.agenda li.talk a:hover h3 { color: var(--accent-2); }

/* Talk page */
.talk-page .tag { margin: 0 0 0.5rem; }
.talk-page .page-title { margin-bottom: 0.75rem; }
.talk-page .speaker { font-size: 1.15rem; margin: 0 0 0.25rem; }
.talk-page .note { margin: 0 0 1rem; }
.talk-page h2 { margin-top: 2.25rem; }
.talk-page p { white-space: pre-line; }
.talk-links { padding-left: 1.2rem; }
.talk-page .actions { margin-top: 2.5rem; }