/* =====================================================================
   REGISTRATION / CHECKOUT PAGE (light theme)
   Loaded after style.css — reuses the same design tokens & components
   (card, btn, gradient-text, glow-orb) and adds the two-column layout
   and form styling specific to this page. All selector names are
   unchanged from the previous theme — register.js depends on none of
   the classes below, only on IDs/name attributes inside the form.
   ===================================================================== */

.checkout-header { padding-block: 28px; }
.checkout-back { display: inline-flex; align-items: center; gap: 8px; color: var(--text-secondary); font-weight: 600; font-size: 0.9rem; transition: color var(--transition-fast); }
.checkout-back:hover { color: var(--accent-purple); }

.checkout-main { padding-block: 12px clamp(60px, 8vw, 100px); position: relative; background: linear-gradient(180deg, #ffffff 0%, var(--bg-base) 100%); }

.checkout-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1fr);
  gap: 32px;
  align-items: flex-start;
}

.checkout-summary {
  position: sticky;
  top: calc(var(--nav-height) + 24px);
  padding: 32px 30px;
}
.checkout-summary__eyebrow { font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--accent-violet); margin-bottom: 10px; }
.checkout-summary__title { font-size: clamp(1.4rem, 2.6vw, 1.8rem); font-weight: 800; line-height: 1.25; margin-bottom: 24px; color: var(--text-primary); }

.checkout-meta-list { display: flex; flex-direction: column; gap: 14px; margin-bottom: 26px; }
.checkout-meta-item { display: flex; align-items: center; gap: 12px; font-size: 0.92rem; color: var(--text-secondary); }
.checkout-meta-item__icon { width: 34px; height: 34px; border-radius: 10px; background: rgba(91, 33, 182, 0.09); display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-size: 1rem; }
.checkout-meta-item strong { color: var(--text-primary); }

.checkout-divider { height: 1px; background: var(--card-border); margin: 24px 0; border: none; }

.checkout-benefits { display: flex; flex-direction: column; gap: 12px; margin-bottom: 26px; }
.checkout-benefit { display: flex; align-items: flex-start; gap: 10px; font-size: 0.9rem; color: var(--text-secondary); }
.checkout-benefit__check { color: var(--success); font-weight: 800; flex-shrink: 0; }

.checkout-price-box { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.checkout-price-box__original { font-size: 1.1rem; color: var(--text-faint); text-decoration: line-through; margin-right: 10px; }
.checkout-price-box__current { font-size: 2.1rem; font-weight: 800; color: var(--text-primary); }
.checkout-price-box__label { font-size: 0.78rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }

.checkout-seats-note { margin-top: 16px; font-size: 0.82rem; color: #dc2626; font-weight: 700; text-align: center; }

/* ---- Form card ---- */
.checkout-form-card { padding: clamp(26px, 4vw, 40px); }
.checkout-form-card__title { font-size: 1.4rem; font-weight: 800; margin-bottom: 6px; color: var(--text-primary); }
.checkout-form-card__subtitle { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 28px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-size: 0.85rem; font-weight: 700; margin-bottom: 8px; color: var(--text-secondary); }
.form-label .optional { font-weight: 500; color: var(--text-faint); text-transform: none; }

.form-input {
  width: 100%;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: #fbfaff;
  border: 1.5px solid var(--card-border);
  color: var(--text-primary);
  font-size: 0.98rem;
  font-family: inherit;
  transition: border-color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}
.form-input::placeholder { color: var(--text-faint); }
.form-input:focus { outline: none; border-color: var(--accent-violet); background: #ffffff; box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.12); }

.form-group.has-error .form-input { border-color: var(--danger); background: rgba(220, 38, 38, 0.04); }
.form-group.is-valid .form-input { border-color: var(--success); }

.form-error {
  display: none;
  align-items: center;
  gap: 6px;
  margin-top: 7px;
  font-size: 0.8rem;
  color: #dc2626;
  font-weight: 600;
}
.form-group.has-error .form-error { display: flex; }

.checkout-submit-area { margin-top: 8px; }
.checkout-security-row {
  display: flex; align-items: center; justify-content: center; gap: 18px;
  margin-top: 18px; flex-wrap: wrap;
}
.checkout-security-item { display: flex; align-items: center; gap: 6px; font-size: 0.78rem; color: var(--text-muted); font-weight: 600; }

.checkout-closed-card { text-align: center; padding: 56px 32px; max-width: 560px; margin: 40px auto; }
.checkout-closed-card .icon-tile { margin: 0 auto 20px; width: 64px; height: 64px; font-size: 1.8rem; border-radius: 20px; }

@media (max-width: 960px) {
  .checkout-grid { grid-template-columns: 1fr; }
  .checkout-summary { position: static; }
}

@media (max-width: 560px) {
  .form-row { grid-template-columns: 1fr; gap: 0; }
}