:root {
  /* Brand */
  --navy: #061556;
  --french-blue: #0073BB;
  --french-blue-hover: #005a93;
  --yellow: #FEBD11;
  --yellow-hover: #E5A800;
  --yellow-border: #d4a000;
  --aqua: #00B4D8;
  --orange: #FF6B35;
  --white: #FFFFFF;

  /* Surfaces */
  --bg: #e8ecf5;
  --card: #ffffff;
  --border: #d8dde8;
  --attendee-bg: #f1f3f9;

  /* Text */
  --text: var(--navy);
  --text-secondary: #3d4a6b;
  --muted: #6a7596;

  /* Informational / warning (orange family — for TBD notices, deadlines, etc.) */
  --warning-bg: #fff1ec;
  --warning-text: #a83c0a;

  /* True error (red family — only for actual error states) */
  --error-bg: #fef2f2;
  --error-text: #991b1b;
  --error-border: #ef4444;

  --radius: 10px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

a { color: var(--french-blue); }
a:hover { color: var(--french-blue-hover); }

.container {
  max-width: 820px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Compact navy header — clean and focused, lets the form take priority. */
.site-header {
  background: var(--navy);
  color: var(--white);
  padding: 24px 0 22px;
  /* Four-color brand accent bar across the bottom — matches promo materials. */
  border-bottom: 5px solid transparent;
  border-image: linear-gradient(
    90deg,
    var(--yellow) 25%,
    var(--french-blue) 25% 50%,
    var(--aqua) 50% 75%,
    var(--orange) 75%
  ) 1;
}
.site-header h1 {
  margin: 0 0 4px;
  font-size: 26px;
  letter-spacing: -0.01em;
  color: var(--white);
}
.site-header h1 .live {
  color: var(--yellow);
  font-weight: 800;
  letter-spacing: 0.02em;
}
.site-header .event-meta {
  margin: 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
}
.site-header .event-meta .dates {
  color: var(--aqua);
  font-weight: 600;
}

.site-footer {
  margin-top: 48px;
  background: var(--navy);
  color: rgba(255, 255, 255, 0.82);
  padding: 24px 0;
}
.site-footer a { color: var(--yellow); }
.site-footer a:hover { color: var(--white); }
.site-footer .muted { color: rgba(255, 255, 255, 0.7); }

.intro { padding: 32px 0 16px; }
.intro h2 {
  margin: 0 0 8px;
  color: var(--text);
  letter-spacing: -0.01em;
}
/* Body copy in the intro — readable, not muted. */
.intro p { color: var(--text-secondary); margin: 0; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  margin-bottom: 18px;
  box-shadow: 0 1px 2px rgba(6, 21, 86, 0.04);
}
.card h3 { margin: 0 0 4px; font-size: 18px; color: var(--text); }
.card .muted { margin: 0 0 16px; }

/* Promote full-sentence descriptions to readable body color (not muted). */
.pricing-table > p,
#payment-section > p.muted.small {
  color: var(--text-secondary);
}

.row-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  gap: 12px;
}

.muted { color: var(--muted); }
.small { font-size: 13px; }

.grid { display: grid; gap: 12px; }
.grid-2 { grid-template-columns: 1fr 1fr; }
.span-2 { grid-column: span 2; }

@media (max-width: 560px) {
  .grid-2 { grid-template-columns: 1fr; }
  .span-2 { grid-column: auto; }
}

label {
  display: flex;
  flex-direction: column;
  font-size: 13px;
  color: var(--muted);
  gap: 4px;
}
label.block { margin-bottom: 12px; }

input, select {
  font: inherit;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  background: white;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus {
  border-color: var(--french-blue);
  box-shadow: 0 0 0 3px rgba(0, 115, 187, 0.18);
}
input:invalid:not(:placeholder-shown) {
  /* True error color — invalid form data is an error, not a warning. */
  border-color: var(--error-border);
}

.attendee {
  border: 1px solid var(--border);
  border-left: 3px solid var(--aqua);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 12px;
  background: var(--attendee-bg);
}
.attendee h4 { margin: 0; font-size: 15px; color: var(--text); }
.attendee .ticket-detail { margin: 6px 0 12px; color: var(--aqua); font-weight: 500; font-size: 13px; }

.btn-primary, .btn-secondary {
  font: inherit;
  font-weight: 600;
  border-radius: 8px;
  padding: 11px 20px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background .15s, border-color .15s, color .15s, transform .05s;
}
.btn-primary {
  background: var(--yellow);
  color: var(--navy);
  border: 1px solid var(--yellow-border);
  box-shadow: 0 2px 4px rgba(6, 21, 86, 0.10);
}
.btn-primary:hover:not(:disabled) {
  background: var(--yellow-hover);
  border-color: var(--yellow-hover);
}
.btn-primary:active:not(:disabled) {
  transform: translateY(1px);
}
.btn-primary:disabled { opacity: .5; cursor: not-allowed; }

.btn-secondary {
  background: white;
  color: var(--french-blue);
  border-color: var(--french-blue);
}
.btn-secondary:hover {
  background: #eaf3fa;
  border-color: var(--french-blue-hover);
  color: var(--french-blue-hover);
}

.btn-link {
  background: none;
  border: none;
  color: var(--muted);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 6px;
}
/* Destructive (remove attendee) — orange, intentionally NOT the error red. */
.btn-link:hover {
  color: var(--orange);
  background: var(--warning-bg);
}

.summary {
  background: var(--card);
  border-left: 4px solid var(--french-blue);
}
.summary h3 { margin-bottom: 12px; }
.summary .line {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  font-size: 14px;
}
.summary .line.total {
  border-top: 1px solid var(--border);
  margin-top: 8px;
  padding-top: 12px;
  font-size: 16px;
  font-weight: 700;
  color: var(--navy);
}
.summary .badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 12px;
  margin-left: 6px;
  font-weight: 600;
  letter-spacing: 0.01em;
}
.summary .badge-aqua {
  background: var(--aqua);
  color: var(--navy);
}
.summary .badge-orange {
  background: var(--orange);
  color: var(--white);
}
.summary .badge-blue {
  background: var(--french-blue);
  color: var(--white);
}
/* Informational TBD warning — orange, not red. */
.summary .placeholder-note {
  background: var(--warning-bg);
  border: 1px solid var(--orange);
  border-radius: 6px;
  padding: 8px 10px;
  margin-top: 10px;
  font-size: 12px;
  color: var(--warning-text);
}

/* True error banner — red. Reserved for "something went wrong". */
.error {
  background: var(--error-bg);
  color: var(--error-text);
  border: 1px solid var(--error-border);
  border-radius: 8px;
  padding: 12px 14px;
  margin: 0 0 16px;
}

.actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin: 24px 0 48px;
  text-align: center;
}
.actions .btn-primary { min-width: 280px; font-size: 16px; }

#group-hint {
  background: rgba(0, 180, 216, 0.1);
  color: var(--navy);
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 13px;
  margin: 0 0 12px;
}

/* ---------- Pricing tier cards ----------
   Three side-by-side cards on desktop (Early Bird / Standard / Walk-In).
   Stack vertically on mobile so each tier reads cleanly without squeeze. */
.pricing-table h3 { margin-bottom: 6px; }
.pricing-tiers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 14px;
}
.pricing-tier {
  background: white;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.pricing-tier-header {
  background: var(--navy);
  color: var(--white);
  padding: 12px 14px;
  text-align: center;
}
.pricing-tier-header h4 {
  margin: 0 0 2px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--white);
}
.pricing-tier-header p {
  margin: 0;
  font-size: 11px;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 0.02em;
}
/* Highlight the preferred tier — "Early Bird" reads in yellow. */
.pricing-tier.tier-eb .pricing-tier-header h4 .early-bird-label {
  color: var(--yellow);
}
.pricing-tier-rows {
  padding: 4px 16px 14px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.pricing-tier-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  padding: 10px 0;
  font-size: 14px;
}
.pricing-tier-row + .pricing-tier-row {
  border-top: 1px solid var(--border);
}
.pricing-tier-row .size {
  color: var(--text-secondary);
}
.pricing-tier-row .price {
  font-weight: 700;
  color: var(--navy);
  font-size: 16px;
  white-space: nowrap;
}
.pricing-tier-row .price .per {
  font-size: 11px;
  color: var(--muted);
  font-weight: 500;
  margin-left: 2px;
}
.pricing-tier-row.pricing-tier-note {
  color: var(--muted);
  font-size: 12px;
  font-style: italic;
  justify-content: center;
}

@media (max-width: 720px) {
  .pricing-tiers {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .pricing-tier-rows { padding: 4px 18px 16px; }
  .pricing-tier-row { padding: 12px 0; }
}

/* ---------- Payment methods ---------- */
.payment-option {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 10px;
  cursor: pointer;
  transition: border-color .15s, background .15s;
  background: white;
}
.payment-option:hover { border-color: var(--french-blue); background: #f8fbfe; }
.payment-option input[type="radio"] {
  margin-top: 3px;
  accent-color: var(--french-blue);
  flex-shrink: 0;
}
.payment-option input[type="radio"]:checked + .payment-option-body .payment-option-label {
  color: var(--navy);
}
.payment-option:has(input:checked) {
  border-color: var(--french-blue);
  background: #f0f6fc;
  box-shadow: 0 0 0 3px rgba(0, 115, 187, 0.12);
}
.payment-option-body {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.payment-option-label {
  font-weight: 600;
  color: var(--text);
  font-size: 15px;
}
.payment-option-desc {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.4;
}
.payment-instructions {
  margin-top: 12px;
  padding: 14px 16px;
  background: #fff7ee;
  border-left: 4px solid var(--orange);
  border-radius: 6px;
  color: var(--text);
  font-size: 14px;
  line-height: 1.55;
}
/* Deadline text inside payment-instructions — informational, orange not red. */
.payment-instructions .deadline {
  margin: 10px 0 0;
  color: var(--warning-text);
  font-weight: 600;
  font-size: 13px;
}
#po-number-block { margin-top: 12px; }

/* ---------- Section eyebrow ---------- */
.section-eyebrow {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--french-blue);
  margin: 28px 0 12px;
  font-weight: 700;
}

/* ---------- Event cards ---------- */
.event-card {
  border-left: 4px solid var(--aqua);
}
.event-card.event-card-flagship {
  border-left-color: var(--yellow);
  background:
    linear-gradient(180deg, rgba(254, 189, 17, 0.04) 0%, transparent 80px),
    var(--card);
}
.event-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 6px;
}
.event-card-header h3 {
  margin: 0 0 2px;
  font-size: 19px;
  color: var(--text);
}
.event-card-header .event-dates {
  margin: 0;
  color: var(--aqua);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.01em;
}
.event-card-flagship .event-card-header .event-dates {
  color: var(--french-blue);
}
.event-card > p {
  color: var(--text-secondary);
  margin: 12px 0 14px;
}

.event-tag {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  flex-shrink: 0;
  white-space: nowrap;
}
.event-tag.tag-flagship {
  background: var(--yellow);
  color: var(--navy);
}

.event-price-tag {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-end;
  background: var(--navy);
  color: var(--white);
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.1;
  flex-shrink: 0;
  white-space: nowrap;
}
.event-price-tag .event-price-unit {
  font-size: 10px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-top: 2px;
}
.event-price-tag.tag-tbd {
  background: var(--warning-bg);
  color: var(--warning-text);
  border: 1px solid var(--orange);
  font-size: 13px;
  padding: 8px 12px;
}
.event-price-tag.tag-free {
  background: var(--aqua);
  color: var(--navy);
  font-size: 14px;
  padding: 8px 14px;
}

@media (max-width: 560px) {
  .event-card-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .event-price-tag {
    align-self: flex-start;
    flex-direction: row;
    align-items: baseline;
    gap: 6px;
  }
  .event-price-tag .event-price-unit { margin-top: 0; }
}

/* ---------- Event card expandable detail (<details>/<summary>) ---------- */
.event-detail {
  margin-top: 14px;
  border-top: 1px solid var(--border);
  padding-top: 12px;
}
.event-detail summary {
  cursor: pointer;
  color: var(--french-blue);
  font-weight: 600;
  font-size: 14px;
  padding: 6px 0;
  list-style: none;
  user-select: none;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: color .15s;
}
.event-detail summary::-webkit-details-marker { display: none; }
.event-detail summary::before {
  content: "▸";
  font-size: 11px;
  transition: transform .2s ease;
  display: inline-block;
  color: var(--french-blue);
}
.event-detail[open] summary::before {
  transform: rotate(90deg);
}
.event-detail summary:hover { color: var(--french-blue-hover); }
.event-detail-body {
  padding-top: 14px;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.65;
}
.event-detail-body h4 {
  margin: 0 0 4px;
  color: var(--text);
  font-size: 16px;
}
.event-detail-meta {
  color: var(--aqua);
  font-weight: 600;
  font-size: 13px;
  margin: 0 0 14px;
}
.event-detail-body p {
  margin: 0 0 12px;
}
.event-detail-body strong {
  color: var(--text);
}
.event-detail-body ul {
  margin: 8px 0 14px;
  padding-left: 22px;
}
.event-detail-body ul li {
  margin-bottom: 6px;
}

/* ---------- Terms & Conditions checkbox ---------- */
.terms-card {
  border-left: 4px solid var(--yellow);
}
.terms-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
  cursor: pointer;
  margin: 0;
}
.terms-checkbox input[type="checkbox"] {
  margin-top: 3px;
  accent-color: var(--french-blue);
  flex-shrink: 0;
  width: 16px;
  height: 16px;
}
.terms-checkbox span {
  color: var(--text);
}
.terms-checkbox a {
  font-weight: 600;
}

/* ---------- Ticket selector (per-attendee) ---------- */
.ticket-select-label {
  font-size: 14px;
  color: var(--text);
  font-weight: 600;
  gap: 6px;
}
.ticket-select-label .ticket-helper {
  font-weight: 400;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.4;
  display: block;
  margin-top: 2px;
}
.ticket-select-label .ticket-helper strong {
  color: var(--french-blue);
}
/* When still on the placeholder, make the select read as muted-italic
   so it's visually clear nothing has been chosen yet. */
.ticket-select-label select:invalid,
.ticket-select-label select:has(option[value=""]:checked) {
  color: var(--muted);
  font-style: italic;
}