/* ── Webinar Registration — Swiss typographic lecture poster ────────
   Off-white ground with faint baseline grid, enormous flush-left
   grotesque headline, cobalt diagonal band, strict metadata columns
   with hairline rules, oversized numbered takeaways, underlined
   two-field registration. */

:root {
  --paper: #f4f3ef;
  --ink: #111111;
  --ink-soft: #6b6b66;
  --cobalt: #1541e8;
  --cobalt-deep: #0f30ad;
  --hairline: #d8d6cf;
  --grid-line: rgba(17, 17, 17, 0.035);
  --ok: #157a44;
  --err: #c8331f;
  --sans: 'Archivo', sans-serif;
  --mono: 'Archivo Mono', monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

.hidden { display: none !important; }

body {
  font-family: var(--sans);
  background:
    repeating-linear-gradient(0deg, transparent 0 27px, var(--grid-line) 27px 28px),
    var(--paper);
  color: var(--ink);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

.poster { min-height: 100vh; display: flex; flex-direction: column; }

.wrap { width: 100%; max-width: 760px; margin: 0 auto; padding: 0 28px; flex: 1 0 auto; }

.mono { font-family: var(--mono); }

/* ── Masthead ─────────────────────────────────────────────────────── */
.masthead {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 28px;
  border-bottom: 2px solid var(--ink);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--ink);
}

/* ── Title block ──────────────────────────────────────────────────── */
.title-block { position: relative; padding: 60px 0 34px; }

.band {
  position: absolute;
  left: -20%;
  right: -20%;
  top: 58%;
  height: 74px;
  background: var(--cobalt);
  transform: rotate(-4deg);
  z-index: 0;
}

.title-block h1 {
  position: relative;
  z-index: 1;
  font-weight: 900;
  font-size: clamp(2.5rem, 9vw, 4.6rem);
  line-height: 0.98;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  max-width: 14ch;
}

.date-display {
  position: relative;
  z-index: 1;
  font-weight: 700;
  font-size: clamp(1.1rem, 3.6vw, 1.5rem);
  color: var(--paper);
  margin-top: 26px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.duration {
  position: relative;
  z-index: 1;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
  margin-top: 22px;
  text-transform: uppercase;
}

/* ── Meta columns ─────────────────────────────────────────────────── */
.meta-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 34px;
  border-top: 1px solid var(--ink);
  padding-top: 26px;
  margin-top: 10px;
}

.col-label {
  font-size: 0.64rem;
  letter-spacing: 0.22em;
  color: var(--ink-soft);
  margin-bottom: 16px;
}

.speaker-block { display: flex; gap: 16px; align-items: flex-start; }

.speaker-initial {
  flex: 0 0 auto;
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ink);
  color: var(--paper);
  font-weight: 900;
  font-size: 2rem;
  line-height: 1;
}

.speaker-name { font-weight: 700; font-size: 1.15rem; letter-spacing: -0.01em; }

.speaker-title { color: var(--ink-soft); font-size: 0.9rem; margin-top: 2px; }

.takeaways { list-style: none; counter-reset: take; }

.takeaways li {
  counter-increment: take;
  display: flex;
  gap: 16px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid var(--hairline);
  font-size: 0.96rem;
  line-height: 1.45;
}

.takeaways li:last-child { border-bottom: none; }

.takeaways li::before {
  content: counter(take, decimal-leading-zero);
  font-weight: 900;
  font-size: 1.5rem;
  color: var(--cobalt);
  letter-spacing: -0.02em;
  flex: 0 0 44px;
}

/* ── Registration ─────────────────────────────────────────────────── */
.register {
  border-top: 1px solid var(--ink);
  margin-top: 30px;
  padding: 26px 0 8px;
}

.reg-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; margin-bottom: 26px; }

.field label {
  display: block;
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

input[type="text"],
input[type="email"] {
  width: 100%;
  padding: 12px 2px;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--ink);
  background: transparent;
  border: none;
  border-bottom: 2px solid var(--ink);
  border-radius: 0;
  transition: border-color 0.15s ease;
}

input:focus { outline: none; border-bottom-color: var(--cobalt); }
input.error { border-bottom-color: var(--err); }
input::placeholder { color: #b5b3aa; font-weight: 500; }

.btn {
  display: inline-block;
  font-family: var(--sans);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--paper);
  background: var(--cobalt);
  border: none;
  padding: 18px 40px;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.12s ease;
  text-decoration: none;
  text-align: center;
}

.btn:hover:not(:disabled) { background: var(--cobalt-deep); transform: translateY(-1px); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.btn:focus-visible { outline: 3px solid var(--ink); outline-offset: 3px; }

.btn-outline {
  background: transparent;
  color: var(--ink);
  border: 2px solid var(--ink);
  padding: 14px 24px;
  font-size: 0.85rem;
}

.btn-outline:hover:not(:disabled) { background: var(--ink); color: var(--paper); transform: none; }

.form-error { color: var(--err); font-weight: 700; margin-top: 14px; }

.fine-print { font-size: 0.6rem; letter-spacing: 0.16em; color: var(--ink-soft); margin-top: 22px; }

.spinner {
  display: inline-block;
  width: 15px;
  height: 15px;
  border: 2.5px solid rgba(244, 243, 239, 0.4);
  border-top-color: var(--paper);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: -2px;
  margin-right: 8px;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Confirmed ────────────────────────────────────────────────────── */
.confirmed .ok { color: var(--ok); }

.confirmed h2 {
  font-weight: 900;
  font-size: clamp(1.8rem, 6vw, 2.6rem);
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.confirm-copy { color: var(--ink-soft); max-width: 480px; margin-top: 10px; }

.cal-row { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 24px; }

/* ── Footer ───────────────────────────────────────────────────────── */
.foot {
  border-top: 2px solid var(--ink);
  margin-top: 46px;
  text-align: center;
  padding: 20px 24px 30px;
  font-size: 0.6rem;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
}

#wbx-powered-by-slot { margin-top: 12px; }

/* ── Responsive ───────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .meta-grid { grid-template-columns: 1fr; gap: 26px; }
  .reg-grid { grid-template-columns: 1fr; gap: 18px; }
  .masthead { font-size: 0.56rem; }
  .band { height: 58px; }
}