:root {
  --green-900: #1b5e20;
  --green-700: #2e7d32;
  --green-600: #388e3c;
  --green-500: #4caf50;
  --green-50: #e8f5e9;
  --ink: #1f2933;
  --ink-soft: #4a5568;
  --muted: #6b7280;
  --line: #e5e7eb;
  --line-strong: #d1d5db;
  --surface: #ffffff;
  --surface-alt: #f7f9f7;
  --surface-sunken: #f3f4f6;
  --danger: #b3261e;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.04);
  --shadow-md: 0 4px 12px rgba(16, 24, 40, 0.06);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --container: 1100px;
  --container-narrow: 820px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--surface);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--green-700);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--green-700);
  color: #fff;
  padding: 0.75rem 1rem;
  z-index: 1000;
}

.skip-link:focus {
  left: 0.5rem;
  top: 0.5rem;
}

/* ============================================================ */
/* Header                                                       */
/* ============================================================ */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.site-header__logo img {
  height: 48px;
  width: auto;
}

.site-header__nav {
  margin-left: auto;
}

.site-header__nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.site-header__nav span {
  display: inline-block;
  padding: 0.5rem 0.75rem;
  color: var(--ink);
  font-weight: 500;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
}

.site-header__cta {
  background: var(--green-600);
  color: #fff !important;
  margin-left: 0.5rem;
}

.site-header__toggle {
  display: none;
  margin-left: auto;
  background: transparent;
  border: 1px solid var(--line);
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  flex-direction: column;
  gap: 4px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
}

.site-header__toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--ink);
}

@media (max-width: 900px) {
  .site-header__toggle {
    display: flex;
  }
  .site-header__nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
    padding: 0.5rem 1rem 1rem;
  }
  .site-header__nav.is-open {
    display: block;
  }
  .site-header__nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .site-header__nav span {
    padding: 0.75rem 0.5rem;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
  }
  .site-header__cta {
    margin-top: 0.5rem;
    border-radius: var(--radius-sm);
    text-align: center;
  }
}

/* ============================================================ */
/* Hero                                                          */
/* ============================================================ */
.page-hero {
  background: linear-gradient(180deg, var(--green-50) 0%, #fff 100%);
  border-bottom: 1px solid var(--line);
}

.page-hero__inner {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 3rem 1.25rem 2.5rem;
  text-align: center;
}

.page-hero__eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green-700);
  font-weight: 600;
  margin: 0 0 0.75rem;
}

.page-hero h1 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  line-height: 1.2;
  margin: 0 0 1rem;
  color: var(--ink);
  font-weight: 700;
}

.page-hero__lede {
  font-size: 1.05rem;
  color: var(--ink-soft);
  max-width: 640px;
  margin: 0 auto;
}

/* ============================================================ */
/* Page body / form                                              */
/* ============================================================ */
.page-body {
  padding: 2.5rem 1.25rem 4rem;
}

.page-body__inner {
  max-width: var(--container-narrow);
  margin: 0 auto;
}

.form-status {
  margin-bottom: 1.25rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  background: var(--green-50);
  border: 1px solid var(--green-500);
  color: var(--green-900);
}

.form-status[hidden] {
  display: none;
}

.form-status--error {
  background: #fdecea;
  border-color: var(--danger);
  color: var(--danger);
}

.reg-form {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.reg-form__section {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  margin: 0;
}

.reg-form__section legend {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--ink);
  padding: 0;
  margin-bottom: 0.25rem;
}

.reg-form__section-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--green-600);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
}

.reg-form__section-hint {
  color: var(--ink-soft);
  margin: 0.25rem 0 1.5rem;
  font-size: 0.95rem;
}

.reg-form__submit {
  text-align: center;
}

.reg-form__submit-note {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 0.85rem;
}

/* ============================================================ */
/* Form rows / fields                                            */
/* ============================================================ */
.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem 1.25rem;
  margin-bottom: 1rem;
}

.form-row:last-child {
  margin-bottom: 0;
}

.form-row--two {
  grid-template-columns: 1fr 1fr;
}

@media (max-width: 600px) {
  .form-row--two {
    grid-template-columns: 1fr;
  }
}

.form-field {
  display: flex;
  flex-direction: column;
}

.form-field label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 0.4rem;
}

.req {
  color: var(--danger);
  font-weight: 700;
  margin-left: 0.15rem;
}

.form-field__hint {
  margin: 0.4rem 0 0;
  font-size: 0.82rem;
  color: var(--muted);
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
select,
textarea {
  width: 100%;
  font: inherit;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 0.7rem 0.85rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
input[type="number"]:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--green-600);
  box-shadow: 0 0 0 3px rgba(46, 125, 50, 0.18);
}

input:disabled,
select:disabled {
  background: var(--surface-sunken);
  color: var(--muted);
  cursor: not-allowed;
}

select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path fill='%234a5568' d='M6 8L0 0h12z'/></svg>");
  background-repeat: no-repeat;
  background-position: right 0.85rem center;
  padding-right: 2.25rem;
}

.input-with-prefix {
  position: relative;
}

.input-with-prefix__prefix {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-weight: 600;
  pointer-events: none;
}

.input-with-prefix input {
  padding-left: 1.75rem;
}

/* ============================================================ */
/* Radio / checkbox / buttons                                    */
/* ============================================================ */
.radio-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.radio-option {
  display: flex;
  gap: 0.75rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  cursor: pointer;
  background: #fff;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.radio-option:hover {
  border-color: var(--green-500);
  background: var(--surface-alt);
}

.radio-option input[type="radio"] {
  margin-top: 0.2rem;
  accent-color: var(--green-600);
  flex: 0 0 auto;
}

.radio-option:has(input[type="radio"]:checked) {
  border-color: var(--green-600);
  background: var(--green-50);
}

.radio-option__body {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.radio-option__title {
  font-weight: 600;
  color: var(--ink);
}

.radio-option__desc {
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.checkbox-option {
  display: flex;
  gap: 0.65rem;
  align-items: flex-start;
  padding: 0.85rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface-alt);
  cursor: pointer;
  margin-top: 1.25rem;
  font-size: 0.95rem;
  color: var(--ink-soft);
}

.checkbox-option input[type="checkbox"] {
  margin-top: 0.2rem;
  accent-color: var(--green-600);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font: inherit;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease,
    transform 0.05s ease;
  text-decoration: none;
}

.btn:active {
  transform: translateY(1px);
}

.btn--primary {
  background: var(--green-600);
  color: #fff;
  font-size: 1.05rem;
  padding: 0.85rem 2rem;
  min-width: 240px;
}

.btn--primary:hover {
  background: var(--green-700);
}

.btn--secondary {
  background: #fff;
  color: var(--green-700);
  border-color: var(--green-600);
}

.btn--secondary:hover {
  background: var(--green-50);
}

/* ============================================================ */
/* Additional registrant cards                                   */
/* ============================================================ */
.additional-registrants {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1rem;
}

.additional-registrants:empty {
  margin-bottom: 0;
}

.registrant-card {
  background: var(--surface-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.25rem 1rem;
}

.registrant-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.registrant-card__title {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
}

.registrant-card__remove {
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--ink-soft);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.75rem;
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
}

.registrant-card__remove:hover {
  border-color: var(--danger);
  color: var(--danger);
  background: #fff;
}

/* ============================================================ */
/* Payment summary                                               */
/* ============================================================ */
.payment-summary {
  background: var(--surface-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
}

.payment-summary__row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.4rem 0;
  align-items: baseline;
}

.payment-summary__row[hidden] {
  display: none;
}

.payment-summary__row--total {
  border-top: 1px solid var(--line-strong);
  padding-top: 0.85rem;
  margin-top: 0.4rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ink);
}

.payment-summary__label {
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.payment-summary__detail {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
  font-weight: 400;
}

.payment-summary__value {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
}

.payment-summary__value--muted {
  color: var(--muted);
  font-weight: 500;
}

/* ============================================================ */
/* Card placeholder                                              */
/* ============================================================ */
.card-placeholder {
  margin-top: 1.5rem;
  padding: 1.25rem;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-md);
  background: #fff;
}

.card-placeholder__header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 1rem;
}

.card-placeholder__lock {
  color: var(--green-700);
}

.card-placeholder__badge {
  margin-left: auto;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: var(--surface-sunken);
  color: var(--muted);
}

.card-placeholder__note {
  margin: 0.5rem 0 0;
  font-size: 0.82rem;
  color: var(--muted);
}

/* ============================================================ */
/* Footer                                                        */
/* ============================================================ */
.site-footer {
  background: #103118;
  color: #d5e7d8;
  margin-top: 3rem;
}

.site-footer__nav span {
  color: #ffffff;
}

.site-footer__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 2.5rem 1.25rem 1.5rem;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2rem;
}

.site-footer__brand img {
  height: 48px;
  margin-bottom: 0.75rem;
  background: #fff;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
}

.site-footer__brand p {
  margin: 0;
  font-size: 0.92rem;
  max-width: 28em;
  color: #c2d4c6;
}

.site-footer__nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.site-footer__social {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
}

.site-footer__social span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.site-footer__meta {
  grid-column: 1 / -1;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.82rem;
  color: #98ab9c;
}

.site-footer__meta p {
  margin: 0;
}

@media (max-width: 700px) {
  .site-footer__inner {
    grid-template-columns: 1fr;
  }
  .site-footer__meta {
    flex-direction: column;
  }
}