/* ============================================================
   BrainFusion V2 Membership / Subscription Plans
   ============================================================
   Pricing page for authenticated users. Shows plan cards with
   monthly/yearly toggle, credit highlights, and upgrade/downgrade
   workflow. Uses teal brand accent (account page).
   ============================================================ */

/* ---- Billing toggle ---- */
.v2-mb-toggle {
  display: inline-flex;
  background: var(--v2-surface-card);
  border: 1px solid var(--v2-border-default);
  border-radius: 9999px;
  padding: 0.25rem;
  gap: 0.125rem;
}

.v2-mb-toggle-btn {
  padding: 0.5rem 1.25rem;
  border: none;
  border-radius: 9999px;
  background: transparent;
  color: var(--v2-text-secondary);
  font-family: var(--v2-font-body);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--v2-transition-fast);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.v2-mb-toggle-btn.is-active {
  background: var(--v2-brand-primary);
  color: var(--v2-text-inverse);
  box-shadow: 0 2px 8px color-mix(in srgb, var(--v2-brand-primary) 30%, transparent);
}

.v2-mb-toggle-btn:hover:not(.is-active) {
  background: color-mix(in srgb, var(--v2-brand-primary) 8%, var(--v2-surface-card));
  color: var(--v2-text-primary);
}

.v2-mb-savings-badge {
  display: inline-block;
  padding: 0.125rem 0.5rem;
  border-radius: 9999px;
  font-size: 0.6875rem;
  font-weight: 700;
  background: var(--v2-brand-accent);
  color: var(--v2-text-on-accent, #451a03);
}

.v2-mb-toggle-btn.is-active .v2-mb-savings-badge {
  background: rgba(255, 255, 255, 0.25);
  color: #ffffff;
}

/* ---- Plans grid ---- */
.v2-mb-plans {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  align-items: start;
}

/* ---- Plan card ---- */
.v2-mb-plan {
  background: var(--v2-surface-card);
  border: 1px solid var(--v2-border-default);
  border-radius: 0.75rem;
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: border-color var(--v2-transition-base), box-shadow var(--v2-transition-base);
}

.v2-mb-plan.is-current {
  border-color: var(--v2-brand-primary);
  box-shadow: 0 0 0 1px var(--v2-brand-primary);
}

.v2-mb-plan.is-featured {
  border-color: var(--v2-brand-primary);
  box-shadow: var(--v2-shadow-brand-md);
}

/* Featured badge */
.v2-mb-featured-badge {
  position: absolute;
  top: -0.625rem;
  right: 1.25rem;
  padding: 0.1875rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--v2-brand-primary);
  color: var(--v2-text-inverse);
}

/* Plan header */
.v2-mb-plan-name {
  font-family: var(--v2-font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--v2-text-primary);
  margin: 0 0 0.25rem 0;
}

.v2-mb-plan-tagline {
  font-size: 0.8125rem;
  color: var(--v2-text-muted);
  margin: 0 0 1rem 0;
}

/* Pricing */
.v2-mb-price-block {
  margin-bottom: 1.25rem;
}

.v2-mb-price {
  font-family: var(--v2-font-display);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--v2-brand-primary);
  line-height: 1.1;
}

.v2-mb-price-period {
  font-size: 0.8125rem;
  color: var(--v2-text-muted);
  font-weight: 400;
  display: block;
  margin-top: 0.25rem;
}

.v2-mb-price-recurring {
  font-size: 0.75rem;
  color: var(--v2-text-muted);
  margin-top: 0.25rem;
}

/* Credit highlight */
.v2-mb-credit-highlight {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 0.875rem;
  background: color-mix(in srgb, var(--v2-brand-accent) 12%, var(--v2-surface-card));
  border: 1px solid color-mix(in srgb, var(--v2-brand-accent) 25%, var(--v2-border-default));
  border-radius: 0.5rem;
  margin-bottom: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--v2-text-primary);
}

.v2-mb-credit-highlight i {
  color: var(--v2-brand-accent);
  font-size: 0.875rem;
}

.v2-mb-cost-per-credit {
  font-size: 0.75rem;
  color: var(--v2-text-muted);
  text-align: center;
  margin-bottom: 1rem;
  min-height: 1rem;
}

/* Feature list */
.v2-mb-features {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem 0;
  flex: 1;
}

.v2-mb-features li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.375rem 0;
  font-size: 0.8125rem;
  color: var(--v2-text-secondary);
  line-height: 1.4;
}

.v2-mb-features li::before {
  content: '\f00c'; /* fa-check */
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  color: var(--v2-brand-primary);
  font-size: 0.6875rem;
  flex-shrink: 0;
  margin-top: 0.1875rem;
}

/* Plan CTA button */
.v2-mb-plan-btn {
  width: 100%;
  margin-top: auto;
}

/* Current plan disabled button */
.v2-mb-plan-btn.is-current-btn::part(base) {
  background: var(--v2-surface-lowered);
  border-color: var(--v2-border-default);
  color: var(--v2-text-muted);
  cursor: default;
  box-shadow: none;
}

/* ---- Info card ---- */
.v2-mb-info {
  background: var(--v2-surface-card);
  border: 1px solid var(--v2-border-default);
  border-radius: 0.75rem;
  padding: 1.5rem 1.75rem;
}

.v2-mb-info h3 {
  font-family: var(--v2-font-display);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--v2-text-primary);
  margin: 0 0 1rem 0;
}

.v2-mb-info ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.v2-mb-info li {
  padding: 0.375rem 0;
  font-size: 0.8125rem;
  color: var(--v2-text-secondary);
  line-height: 1.5;
}

.v2-mb-info li strong {
  color: var(--v2-text-primary);
}

/* ---- Subscription status alert ---- */
.v2-mb-status-alert {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  border-radius: 0.75rem;
  font-size: 0.8125rem;
  line-height: 1.5;
}

.v2-mb-status-alert--warning {
  background: color-mix(in srgb, var(--v2-brand-accent) 12%, var(--v2-surface-card));
  border: 1px solid color-mix(in srgb, var(--v2-brand-accent) 25%, var(--v2-border-default));
  color: var(--v2-text-primary);
}

.v2-mb-status-alert--warning i {
  color: var(--v2-brand-accent);
  flex-shrink: 0;
  margin-top: 0.125rem;
}

.v2-mb-status-alert a {
  color: var(--v2-brand-primary);
  font-weight: 600;
  text-decoration: underline;
}

/* ---- Success/Error inline messages ---- */
.v2-mb-message {
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
}

.v2-mb-message--success {
  background: color-mix(in srgb, #16a34a 10%, var(--v2-surface-card));
  border: 1px solid color-mix(in srgb, #16a34a 25%, var(--v2-border-default));
  color: #16a34a;
}

[data-theme="dark"] .v2-mb-message--success {
  color: #4ade80;
}

.v2-mb-message--error {
  background: color-mix(in srgb, var(--v2-danger) 10%, var(--v2-surface-card));
  border: 1px solid color-mix(in srgb, var(--v2-danger) 25%, var(--v2-border-default));
  color: var(--v2-danger-text);
}

/* ---- Toast ---- */
.v2-mb-toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(120%);
  background: var(--v2-text-primary);
  color: var(--v2-text-inverse);
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  font-family: var(--v2-font-body);
  box-shadow: var(--v2-shadow-neutral-lg);
  z-index: 10100;
  opacity: 0;
  transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.3s ease;
  pointer-events: none;
}

.v2-mb-toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ---- Entry animations ---- */
.v2-mb-enter {
  opacity: 0;
  transform: translateY(10px);
  animation: v2MbFadeIn 0.45s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.v2-mb-stagger-1 { animation-delay: 0.05s; }
.v2-mb-stagger-2 { animation-delay: 0.1s; }
.v2-mb-stagger-3 { animation-delay: 0.15s; }
.v2-mb-stagger-4 { animation-delay: 0.2s; }

@keyframes v2MbFadeIn {
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .v2-mb-enter {
    opacity: 1;
    transform: none;
    animation: none;
  }
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .v2-mb-plans {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .v2-mb-plans {
    grid-template-columns: 1fr;
  }

  .v2-mb-plan {
    padding: 1.25rem 1rem;
  }

  .v2-mb-price {
    font-size: 1.875rem;
  }
}