.registration-hero {
  position: relative;
  padding: 116px 0 64px;
  overflow: hidden;
  background: #10222a;
  color: #fff;
}

.registration-hero::before,
.registration-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.registration-hero::before {
  background: url("../images/hero-race.jpg") center/cover;
  filter: saturate(.82) contrast(.92);
  transform: scale(1.02);
}

.registration-hero::after {
  background:
    linear-gradient(90deg, rgba(7, 17, 31, .78), rgba(31, 43, 48, .58) 54%, rgba(56, 62, 66, .36)),
    linear-gradient(180deg, rgba(7, 17, 31, .18), rgba(7, 17, 31, .08));
}

.navbar {
  background: rgba(255, 255, 255, .94);
}

.registration-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: end;
}

.registration-hero h1 {
  max-width: 760px;
  margin: 0 0 16px;
  font-size: clamp(2.3rem, 4vw, 4.8rem);
  line-height: .96;
}

.registration-hero p {
  max-width: 660px;
  color: rgba(255, 255, 255, .84);
  font-size: 1.15rem;
}

.registration-section {
  padding: 40px 0 72px;
  background: var(--bg);
}

.registration-shell {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.step-list {
  position: sticky;
  top: 92px;
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.step-list li {
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-soft);
  color: var(--muted);
  font-weight: 700;
}

.step-list li.active {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 12px 30px rgba(112, 192, 67, .14);
}

.step-index,
.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  flex: 0 0 30px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-weight: 800;
}

.registration-form,
.registration-panel {
  min-width: 0;
}

.registration-panel {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-soft);
  box-shadow: 0 10px 30px rgba(15, 23, 42, .05);
}

.registration-panel[hidden] {
  display: none;
}

.panel-heading {
  display: flex;
  gap: 14px;
  margin-bottom: 22px;
}

.panel-heading h2 {
  margin: 0 0 5px;
  font-size: 1.6rem;
}

.panel-heading p {
  margin: 0;
  color: var(--muted);
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  align-items: start;
}

.form-field {
  display: grid;
  gap: 7px;
}

.form-field.full {
  grid-column: 1 / -1;
}

.checkbox-field {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
  font-weight: 800;
  color: var(--dark);
}

.checkbox-field input {
  width: 18px;
  height: 18px;
  min-height: 18px;
  margin-top: 3px;
}

.checkbox-field .field-help {
  grid-column: 2;
}

.form-field label {
  font-weight: 800;
  color: var(--dark);
}

.required-mark {
  color: #d03d2f;
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 11px 12px;
  color: var(--dark);
  font: inherit;
  background: #fff;
}

.form-field textarea {
  min-height: 120px;
  resize: vertical;
}

.field-help {
  color: var(--muted);
  font-size: .9rem;
}

.review-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.review-list {
  display: grid;
  gap: 9px;
}

.review-row {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  gap: 10px;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--line);
}

.review-row strong {
  color: var(--muted);
}

.confirm-row {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-top: 20px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
  font-weight: 800;
}

.confirm-row input {
  width: 18px;
  height: 18px;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 18px;
}

.form-actions [hidden] {
  display: none !important;
}

.btn-danger {
  background: #dc2626;
  color: #fff;
  box-shadow: 0 14px 34px rgba(220, 38, 38, .26);
}

.btn-danger:hover {
  background: #b91c1c;
}

.registration-modal-actions .is-loading {
  opacity: .68;
  cursor: wait;
}

.dev-only-next {
  border-color: #991b1b;
}

.form-note {
  min-height: 24px;
  margin: 12px 0 0;
  color: var(--muted);
}

.form-note.success {
  color: #0f7a44;
  font-weight: 800;
}

.form-note.error {
  color: #b42318;
  font-weight: 800;
}

.registration-modal[hidden] {
  display: none;
}

.registration-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  padding: 20px;
}

.registration-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(9, 18, 27, .62);
}

.registration-modal-card {
  position: relative;
  z-index: 1;
  width: min(100%, 520px);
  padding: 26px;
  border: 1px solid rgba(255, 255, 255, .34);
  border-radius: 8px;
  background: var(--bg-soft);
  box-shadow: 0 24px 70px rgba(9, 18, 27, .28);
}

.registration-modal-card h2 {
  margin: 0 0 10px;
  font-size: 1.65rem;
}

.registration-modal-card p {
  margin: 0;
  color: var(--muted);
}

.registration-modal-card.warning {
  border-color: rgba(220, 38, 38, .34);
  box-shadow: 0 24px 70px rgba(127, 29, 29, .24);
}

.registration-modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 22px;
}

@media (max-width: 900px) {
  .registration-hero-grid,
  .registration-shell,
  .review-grid {
    grid-template-columns: 1fr;
  }

  .step-list {
    position: static;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .registration-hero {
    padding-top: 96px;
  }

  .field-grid,
  .step-list {
    grid-template-columns: 1fr;
  }

  .registration-panel {
    padding: 18px;
  }

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

  .form-actions {
    flex-direction: column;
  }

  .registration-modal-actions {
    flex-direction: column-reverse;
  }
}