.signup-page-shell {
  min-height: 100vh;
}

.signup-page-topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(12px);
  background: rgba(247, 248, 252, 0.9);
  border-bottom: 1px solid rgba(231, 235, 243, 0.92);
}

.signup-page-topbar__inner {
  width: min(1180px, calc(100% - 32px));
  min-height: 82px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.signup-page-brand {
  display: inline-flex;
  align-items: center;
}

.signup-page-brand img {
  height: 40px;
  width: auto;
  object-fit: contain;
}

.signup-page-topbar__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.signup-auth-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.register-card {
  width: min(760px, 100%);
  margin: 32px 0;
}

.register-card h2 {
  margin: 0;
  font-family: var(--font-title);
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}

.register-section {
  display: grid;
  gap: 14px;
}

.register-section + .register-section {
  padding-top: 6px;
}

.register-section__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.register-form-grid label {
  display: grid;
  gap: 8px;
}

.register-form-grid label > span {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--muted-strong);
}

.register-plan-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.register-plan-option {
  display: block;
  cursor: pointer;
}

.register-plan-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.register-plan-option__content {
  display: grid;
  gap: 4px;
  min-height: 100%;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.register-plan-option__content strong {
  font-size: 0.98rem;
  color: var(--text);
}

.register-plan-option__content small {
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.4;
}

.register-plan-option:hover .register-plan-option__content {
  transform: translateY(-1px);
}

.register-plan-option.is-active .register-plan-option__content,
.register-plan-option input:checked + .register-plan-option__content {
  border-color: rgba(217, 28, 28, 0.35);
  box-shadow: 0 0 0 4px rgba(217, 28, 28, 0.08);
  background: #fff8f8;
}

.register-slug-field {
  display: grid;
  grid-template-columns: auto 1fr;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
}

.register-slug-field:focus-within {
  border-color: rgba(217, 28, 28, 0.35);
  box-shadow: 0 0 0 4px rgba(217, 28, 28, 0.12);
}

.register-slug-field__prefix {
  display: flex;
  align-items: center;
  padding: 14px 16px;
  background: #fff2f1;
  color: var(--primary);
  font-size: 0.92rem;
  font-weight: 800;
  white-space: nowrap;
}

.register-slug-field input {
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.register-preview-note {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.45;
}

.register-preview-note strong {
  color: var(--text);
  word-break: break-word;
}

.register-errors {
  margin-bottom: 0;
}

.register-errors ul {
  margin: 8px 0 0;
  padding-left: 18px;
}

@media (max-width: 640px) {
  .signup-page-topbar__inner {
    width: min(100%, calc(100% - 20px));
    min-height: 72px;
  }

  .signup-page-topbar__actions {
    gap: 8px;
  }

  .signup-page-topbar__actions .btn {
    min-height: 38px;
    padding: 0 12px;
    font-size: 0.78rem;
  }

  .signup-auth-wrap {
    padding: 18px;
  }

  .register-card {
    padding: 24px;
    margin: 20px 0;
  }

  .register-plan-grid {
    grid-template-columns: 1fr;
  }

  .register-slug-field {
    grid-template-columns: 1fr;
  }

  .register-slug-field__prefix {
    padding: 12px 14px 0;
    background: transparent;
  }
}