/* ─── Buy Page Layout ─────────────────────────────────────────────────────── */
/* F-010: Public checkout page. Editorial-split layout: product info left,
   payment form right. Near-OLED canvas + amber accent = "value + transaction". */

.buy-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: var(--space-section) 1.5rem;
}

.buy-page__container {
  width: 100%;
  max-width: var(--max-width);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

/* ─── Product Column (left on desktop) ────────────────────────────────────── */

.buy-page__product {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.buy-page__product-name {
  font-family: var(--font-display);
  font-size: var(--text-h1);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--color-ink);
  margin: 0;
}

.buy-page__description {
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-weight: 400;
  line-height: 1.65;
  color: var(--color-ink-muted);
  max-width: var(--max-prose);
}

.buy-page__description p {
  margin: 0 0 1rem;
}

.buy-page__description p:last-child {
  margin-bottom: 0;
}

.buy-page__price {
  font-family: var(--font-display);
  font-size: var(--text-h2);
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--color-accent);
  margin: 0;
}

/* ─── Cover Image ─────────────────────────────────────────────────────────── */

.buy-page__cover-image {
  width: 100%;
  border-radius: var(--radius-card);
  display: block;
  object-fit: cover;
  max-height: 20rem;
  box-shadow: 0 0 0 1px var(--color-border);
}

/* ─── Checkout Column (right on desktop) ──────────────────────────────────── */

.buy-page__checkout {
  display: flex;
  flex-direction: column;
}

/* Double-bezel card: outer bezel provides depth, inner bezel elevates form */
.buy-page__checkout-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  box-shadow: 0 0 0 1px var(--color-border);
  padding: var(--space-xs);
}

.buy-page__checkout-card-inner {
  background: var(--color-surface-raised);
  border-radius: var(--radius-inner);
  padding: var(--space-card);
  display: flex;
  flex-direction: column;
}

/* ─── Stripe Elements Container ───────────────────────────────────────────── */

.buy-page__stripe-container {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-field);
  padding: var(--space-card-y) var(--space-card-x);
  transition: border-color var(--duration-fast) var(--ease-default);
  min-height: 3rem;
}

.buy-page__stripe-container:hover {
  border-color: rgba(255, 255, 255, 0.15);
}

.buy-page__stripe-container:focus-within {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.buy-page__stripe-container .loading__skeleton--line {
  height: 1.25rem;
  margin-bottom: 0;
}

/* ─── Error State ─────────────────────────────────────────────────────────── */

.buy-page__stripe-unavailable {
  font-family: var(--font-body);
  font-size: var(--text-small);
  color: var(--color-error);
  padding: var(--space-card-y) var(--space-card-x);
  background: var(--color-error-subtle);
  border: 1px solid var(--color-error-border);
  border-radius: var(--radius-field);
  margin-bottom: 1.5rem;
}

/* ─── Pay Button ──────────────────────────────────────────────────────────── */

.buy-page__pay-btn {
  width: 100%;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-2xs);
}

/* ─── CSS Spinner (button processing state) ───────────────────────────────── */

.buy-page__spinner {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border: 2px solid rgba(5, 5, 5, 0.3);
  border-top-color: var(--color-canvas);
  border-radius: 50%;
  animation: buy-page-spin 0.7s linear infinite;
  flex-shrink: 0;
}

@keyframes buy-page-spin {
  to { transform: rotate(360deg); }
}

/* ─── Page Entry Animation ────────────────────────────────────────────────── */

[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  animation: buy-page-reveal var(--duration-slow) var(--ease-default) forwards;
}

.buy-page__checkout[data-reveal] {
  animation-delay: 100ms;
}

@keyframes buy-page-reveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ─── Error Message Entry Animation ──────────────────────────────────────── */

.field__error:not([hidden]),
.buy-page__stripe-unavailable:not([hidden]) {
  animation: buy-page-error-in 300ms var(--ease-default) forwards;
}

@keyframes buy-page-error-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ─── Desktop: Editorial Split ─────────────────────────────────────────────── */

@media (min-width: 768px) {
  .buy-page__container {
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-xl);
    align-items: start;
  }

  .buy-page__product {
    padding-top: var(--space-card);
  }
}

/* ─── Deactivated / Unavailable state ─────────────────────────────────────── */

.buy-page__unavailable {
  background: var(--color-surface);
  box-shadow: 0 0 0 1px var(--color-border);
  border-radius: var(--radius-card);
  padding: var(--space-card);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 8rem;
}

.buy-page__unavailable-message {
  font-family: var(--font-body);
  font-size: var(--text-body);
  color: var(--color-ink-muted);
  text-align: center;
  margin: 0;
}