/* ============================================================
   THEME BASE — Shared structural foundation for all form themes
   All colors reference --theme-* CSS variables (set per theme).
   ============================================================ */

/* ---- Reset & Typography ---- */
.registration-container * {
  box-sizing: border-box;
}

.registration-container {
  font-family: var(--theme-font-family, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif);
  color: var(--theme-text, #1e293b);
  background: var(--theme-bg, #f8fafc);
  min-height: 100vh;
}

/* ---- Layout: sidebar visible (default) ---- */
.registration-container .registration-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 0;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 16px 64px;
}

/* ---- Layout: centered / no-sidebar ---- */
.registration-container[data-layout-variant="centered"] .registration-layout,
.registration-container[data-layout-variant="no_sidebar"] .registration-layout {
  grid-template-columns: 1fr;
  max-width: 640px;
}

/* ---- Layout: full_width ---- */
.registration-container[data-layout-variant="full_width"] .registration-layout {
  max-width: 1280px;
  grid-template-columns: 300px 1fr;
}

/* ---- Sidebar ---- */
.registration-container .event-sidebar {
  position: sticky;
  top: 80px;
  align-self: start;
  padding: 24px 16px 24px 0;
}

/* ---- Form main area ---- */
.registration-container .form-main {
  min-width: 0;
  padding: 24px 0 24px 24px;
}

.registration-container[data-layout-variant="centered"] .form-main,
.registration-container[data-layout-variant="no_sidebar"] .form-main {
  padding: 24px 0;
}

/* ---- Progress bar base ---- */
.registration-container .progress-container {
  position: relative;
  width: 100%;
}

/* ---- Form section visibility ---- */
.registration-container .form-section {
  display: none;
}
.registration-container .form-section.active {
  display: block;
}

/* ---- Navigation buttons base ---- */
.registration-container .form-navigation {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 32px;
  padding-top: 24px;
}

.registration-container .btn-next,
.registration-container .btn-submit {
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
}

.registration-container .btn-prev {
  cursor: pointer;
  background: transparent;
  transition: all 0.2s ease;
}

/* ---- Form group base ---- */
.registration-container .form-group {
  margin-bottom: 20px;
}

.registration-container .form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
  font-weight: 500;
}

/* ---- Input base ---- */
.registration-container .form-group input[type="text"],
.registration-container .form-group input[type="email"],
.registration-container .form-group input[type="tel"],
.registration-container .form-group input[type="date"],
.registration-container .form-group input[type="number"],
.registration-container .form-group select,
.registration-container .form-group textarea {
  width: 100%;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

/* ---- Error state ---- */
.registration-container .field-error,
.registration-container .errorlist li {
  color: var(--theme-error, #ef4444);
  font-size: 13px;
  margin-top: 4px;
}

/* ---- Success / payment summary ---- */
.registration-container .payment-summary {
  border: 1px solid var(--theme-primary, #2563eb);
  border-radius: var(--theme-border-radius, 8px);
  padding: 16px;
  margin-bottom: 20px;
}

/* ---- task-187: payment step is a denser, wider surface than the
   info-collection step. Stripe/PayPal need horizontal room for card +
   country + zip on one line. Sidebar is more useful as a sticky
   bottom-bar than a full-height column at this stage. ---- */
.registration-container .form-section.active.section-payment,
.registration-container .form-section.active[data-section="payment"] {
  max-width: 760px;
  margin: 0 auto;
}

.registration-container .form-section.active.section-payment .payment-container,
.registration-container .form-section.active.section-payment .stripe-payment-element,
.registration-container .form-section.active[data-section="payment"] .stripe-payment-element {
  width: 100%;
  max-width: 100%;
  padding: 18px 20px;
  background: var(--theme-surface, #ffffff);
  border: 1px solid var(--theme-border, #e2e8f0);
  border-radius: var(--theme-border-radius, 12px);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
}

/* ---- task-187: compact the right sidebar. The default 320px column
   stacks every event-detail vertically with chunky icons — fine on a
   landing page but visually noisy next to a multi-step form. Tighten
   spacing, shrink icons, hide redundant value duplications. ---- */
.registration-container .event-sidebar .event-detail {
  padding: 8px 10px;
  gap: 10px;
  font-size: 0.85rem;
}

.registration-container .event-sidebar .detail-icon {
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
}

.registration-container .event-sidebar .detail-label {
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--theme-muted, #64748b);
  margin-bottom: 2px;
}

.registration-container .event-sidebar .detail-value {
  font-size: 0.875rem;
  line-height: 1.3;
}

.registration-container .event-sidebar .detail-time {
  font-size: 0.78rem;
  color: var(--theme-muted, #64748b);
}

.registration-container .event-sidebar h3 {
  font-size: 1rem;
  margin: 0 0 4px;
}

.registration-container .event-sidebar .event-date-subtitle {
  font-size: 0.8rem;
  color: var(--theme-muted, #64748b);
}

/* ---- Mobile: full-width single column ---- */
@media (max-width: 900px) {
  .registration-container .registration-layout {
    grid-template-columns: 1fr;
    max-width: 100%;
    padding: 0 6px 48px;
  }

  .registration-container .event-sidebar {
    position: static;
    padding: 16px 0 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    margin-bottom: 16px;
  }

  .registration-container .form-main {
    padding: 16px 0;
  }

  .registration-container .form-navigation {
    flex-direction: row;
  }

  .registration-container .btn-next,
  .registration-container .btn-submit {
    flex: 1;
  }
}

@media (max-width: 480px) {
  .registration-container .registration-layout {
    padding: 0 4px 48px;
  }

  .registration-container .form-navigation {
    flex-direction: column-reverse;
    gap: 10px;
  }

  .registration-container .btn-next,
  .registration-container .btn-submit,
  .registration-container .btn-prev {
    width: 100%;
    text-align: center;
  }
}