/* ═══════════════════════════════════════════════════════════════════════
   STUDYRIA — PREMIUM PDF CHECKOUT (PCO)
   New checkout UI layer over the existing trusted systems
   (cart.js Cart · Razorpay · purchased_pdfs · Library).

   ARCHITECTURE RULES (non-negotiable):
   • The preview never locks document scrolling — no body/html overflow
     manipulation anywhere in this file.
   • No global touch/pointer/wheel handlers — page scroll and browser
     pinch zoom stay 100% native.
   • The sticky mobile bar reserves its own space via padding on the
     page container — it never covers content and never creates
     horizontal overflow.
   ═══════════════════════════════════════════════════════════════════════ */

.pco-root {
  max-width: 1120px;
  margin: 0 auto;
  padding: 20px 16px calc(96px + env(safe-area-inset-bottom));
  font-family: var(--font-ui, 'Wix Madefor Display', system-ui, sans-serif);
}
.pco-root.pco-no-bar { padding-bottom: 32px; }

/* ── Top row ─────────────────────────────────────────────────────── */
.pco-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}
.pco-back {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 1px solid rgba(147, 2, 5, 0.22);
  background: transparent;
  color: #930205;
  border-radius: 10px;
  padding: 8px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s ease;
}
.pco-back:hover { background: rgba(147, 2, 5, 0.06); }
.pco-secure-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #0a7a3d;
}
.pco-secure-tag svg { flex-shrink: 0; }

/* ── Two-column shell (desktop) ───────────────────────────────────── */
@media (min-width: 1024px) {
  .pco-shell {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 28px;
    align-items: start;
  }
  .pco-root { padding-bottom: 40px; }
}

/* ── Product identity ─────────────────────────────────────────────── */
.pco-ident { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.pco-eyebrow {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #930205;
}
.pco-title {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 800;
  line-height: 1.25;
  color: #1c1410;
  text-wrap: balance;
}
.pco-meta { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 2px; }
.pco-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: 999px;
  background: rgba(147, 2, 5, 0.07);
  color: #6d1b1b;
  white-space: nowrap;
}
.pco-chip.pco-chip-plain { background: rgba(28, 20, 16, 0.06); color: #5a4a42; }

/* ── Preview card — ISOLATED, bounded, zero viewport impact ───────── */
.pco-preview {
  border: 1px solid rgba(28, 20, 16, 0.10);
  border-radius: 16px;
  background: linear-gradient(180deg, #fffdf9 0%, #faf6ef 100%);
  overflow: hidden;
}
.pco-preview-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #8a7a70;
}
.pco-preview-badge {
  color: #0a7a3d;
  background: rgba(10, 122, 61, 0.08);
  padding: 2px 8px;
  border-radius: 999px;
}
.pco-stage {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 4;
  max-height: 520px;
  background: #f3ede3;
  overflow: hidden;
  touch-action: pan-y;            /* vertical panning allowed → page scrolls */
}
.pco-stage-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;            /* image can NEVER escape the stage */
  user-select: none;
  -webkit-user-drag: none;
  transition: opacity .25s ease;
  opacity: 0;
}
.pco-stage-img.pco-visible { opacity: 1; }

.pco-wm {
  position: absolute;
  inset: 0;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  opacity: 0;
  transition: opacity .2s ease;
}
.pco-wm.pco-visible { opacity: 1; }
.pco-wm span {
  font-size: clamp(0.8rem, 2.4vw, 1.05rem);
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(28, 20, 16, 0.13);
  transform: rotate(-28deg);
  text-align: center;
  white-space: pre-line;
  line-height: 1.7;
}

.pco-stage-loading,
.pco-stage-error {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  z-index: 3;
  background: rgba(243, 237, 227, 0.65);
}
.pco-spinner {
  width: 30px; height: 30px;
  border: 3px solid rgba(147, 2, 5, 0.15);
  border-top-color: #930205;
  border-radius: 50%;
  animation: pco-spin .8s linear infinite;
}
@keyframes pco-spin { to { transform: rotate(360deg); } }
.pco-stage-loading span { font-size: 0.78rem; font-weight: 600; color: #8a7a70; }
.pco-stage-error span { font-size: 0.8rem; font-weight: 600; color: #a33; }
@media (prefers-reduced-motion: reduce) { .pco-spinner { animation-duration: 2s; } }

.pco-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 4;
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(28, 20, 16, 0.14);
  background: rgba(255, 253, 249, 0.92);
  color: #1c1410;
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  transition: background .15s ease;
}
.pco-arrow:hover:not(:disabled) { background: #fff; }
.pco-arrow:disabled { opacity: 0.35; cursor: default; }
.pco-arrow-prev { left: 10px; }
.pco-arrow-next { right: 10px; }

.pco-stage-ind {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: 10px;
  z-index: 4;
  font-size: 0.7rem;
  font-weight: 700;
  background: rgba(28, 20, 16, 0.6);
  color: #fffdf9;
  padding: 3px 10px;
  border-radius: 999px;
  pointer-events: none;
}

/* Thumbnails */
.pco-thumbs {
  display: flex;
  gap: 8px;
  padding: 10px 14px 14px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.pco-thumbs::-webkit-scrollbar { display: none; }
.pco-thumb {
  flex: 0 0 auto;
  width: 46px; height: 60px;
  border-radius: 8px;
  border: 2px solid rgba(28, 20, 16, 0.12);
  background: #f3ede3;
  overflow: hidden;
  cursor: pointer;
  padding: 0;
  position: relative;
}
.pco-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.pco-thumb .pco-thumb-fallback {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.62rem; font-weight: 700; color: #8a7a70;
}
.pco-thumb.active { border-color: #930205; box-shadow: 0 0 0 2px rgba(147, 2, 5, 0.15); }
.pco-thumb-label {
  position: absolute; left: 0; right: 0; bottom: 0;
  font-size: 0.52rem; font-weight: 700; text-transform: uppercase;
  text-align: center; background: rgba(28,20,16,0.55); color: #fff;
  padding: 1px 0;
}

/* ── Description / benefits ──────────────────────────────────────── */
.pco-desc {
  margin-top: 14px;
  font-size: 0.86rem;
  line-height: 1.65;
  color: #4a3e37;
}
.pco-benefits {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.pco-benefits li {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  font-size: 0.82rem;
  color: #4a3e37;
}
.pco-benefits svg { flex-shrink: 0; margin-top: 2px; color: #0a7a3d; }

/* ── Summary card ────────────────────────────────────────────────── */
.pco-summary {
  border: 1px solid rgba(147, 2, 5, 0.14);
  border-radius: 18px;
  background: #fffdf9;
  box-shadow: 0 10px 30px rgba(28, 20, 16, 0.06);
  overflow: hidden;
}
@media (min-width: 1024px) {
  .pco-summary { position: sticky; top: 84px; }
}
.pco-summary-head {
  padding: 14px 18px;
  border-bottom: 1px solid rgba(28, 20, 16, 0.07);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: #8a7a70;
}
.pco-prod-row {
  display: flex;
  gap: 12px;
  padding: 16px 18px 6px;
  align-items: center;
}
.pco-prod-cover {
  width: 52px; height: 66px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid rgba(28, 20, 16, 0.08);
}
.pco-prod-noimg {
  width: 52px; height: 66px;
  border-radius: 8px;
  background: rgba(147, 2, 5, 0.08);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}
.pco-prod-name {
  font-size: 0.92rem;
  font-weight: 700;
  color: #1c1410;
  line-height: 1.35;
}
.pco-prod-sub { font-size: 0.72rem; color: #8a7a70; margin-top: 2px; }

.pco-pricebox { padding: 8px 18px 16px; }
.pco-price-final {
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.pco-price-final .pco-pay {
  font-size: 1.9rem;
  font-weight: 800;
  color: #1c1410;
}
.pco-price-final .pco-mrp {
  font-size: 0.9rem;
  color: #9b8d84;
  text-decoration: line-through;
}
.pco-off {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 800;
  color: #0a7a3d;
  background: rgba(10, 122, 61, 0.09);
  border-radius: 6px;
  padding: 2px 7px;
}

.pco-price-rows {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed rgba(28, 20, 16, 0.14);
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.pco-price-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  color: #5a4a42;
}
.pco-price-row strong { color: #1c1410; font-weight: 800; }
.pco-price-row.pco-save strong { color: #0a7a3d; }

.pco-actions { padding: 0 18px 6px; display: flex; flex-direction: column; gap: 10px; }
.pco-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  border: none;
  border-radius: 12px;
  padding: 13px 16px;
  font-size: 0.95rem;
  font-weight: 800;
  cursor: pointer;
  transition: transform .1s ease, opacity .15s ease;
  font-family: inherit;
}
.pco-btn:active:not(:disabled) { transform: scale(0.985); }
.pco-btn:disabled { opacity: 0.55; cursor: not-allowed; }
.pco-btn-primary { background: linear-gradient(135deg, #a70609 0%, #930205 100%); color: #fffdf9; box-shadow: 0 6px 18px rgba(147, 2, 5, 0.28); }
.pco-btn-primary:hover:not(:disabled) { box-shadow: 0 8px 22px rgba(147, 2, 5, 0.34); }
.pco-btn-secondary { background: transparent; color: #930205; border: 1.5px solid rgba(147, 2, 5, 0.3); }
.pco-btn-ghost { background: rgba(28, 20, 16, 0.05); color: #4a3e37; }
.pco-btn-green { background: linear-gradient(135deg, #0d8f47 0%, #0a7a3d 100%); color: #fff; box-shadow: 0 6px 18px rgba(10, 122, 61, 0.25); }
.pco-btn[disabled] { transform: none; }

.pco-cart-row { display: flex; gap: 10px; }
.pco-cart-row .pco-btn { flex: 1; }

.pco-note {
  display: flex;
  align-items: center;
  gap: 6px;
  justify-content: center;
  font-size: 0.7rem;
  color: #8a7a70;
  padding: 6px 18px 14px;
  text-align: center;
}

/* ── Trust badges ─────────────────────────────────────────────────── */
.pco-trust {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  padding: 14px 18px 18px;
  border-top: 1px solid rgba(28, 20, 16, 0.07);
}
.pco-trust-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  text-align: center;
  font-size: 0.68rem;
  font-weight: 700;
  color: #4a3e37;
}
.pco-trust-item svg { color: #930205; }
.pco-trust-item small { font-weight: 500; color: #8a7a70; font-size: 0.62rem; }
@media (max-width: 359px) { .pco-trust { grid-template-columns: repeat(2, 1fr); } }

/* ── Inline notice (cancel / save-failed) ─────────────────────────── */
.pco-notice {
  margin: 0 18px 12px;
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 0.78rem;
  line-height: 1.45;
  display: flex;
  gap: 8px;
  align-items: flex-start;
}
.pco-notice-info { background: rgba(10, 122, 61, 0.08); color: #0a7a3d; }
.pco-notice-warn { background: rgba(214, 92, 22, 0.10); color: #9a5b0e; }

/* ── State cards (owned / premium / success / errors) ─────────────── */
.pco-state-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
  padding: 34px 22px;
  border-radius: 18px;
  border: 1px solid rgba(28, 20, 16, 0.10);
  background: #fffdf9;
  margin-top: 10px;
}
.pco-state-ico {
  width: 64px; height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.7rem;
}
.pco-state-ico-green { background: rgba(10, 122, 61, 0.10); }
.pco-state-ico-gold { background: rgba(180, 140, 30, 0.14); }
.pco-state-ico-red { background: rgba(147, 2, 5, 0.08); }
.pco-state-title { margin: 0; font-size: 1.15rem; font-weight: 800; color: #1c1410; }
.pco-state-sub { margin: 0; font-size: 0.84rem; color: #5a4a42; line-height: 1.55; max-width: 420px; }
.pco-state-ctas { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 6px; }
.pco-state-ctas .pco-btn { width: auto; min-width: 150px; }

/* ── Skeleton ─────────────────────────────────────────────────────── */
.pco-skel {
  border-radius: 10px;
  background: linear-gradient(100deg, rgba(28,20,16,0.06) 40%, rgba(28,20,16,0.11) 50%, rgba(28,20,16,0.06) 60%);
  background-size: 200% 100%;
  animation: pco-shimmer 1.4s ease-in-out infinite;
}
@keyframes pco-shimmer { to { background-position: -200% 0; } }
@media (prefers-reduced-motion: reduce) { .pco-skel { animation: none; } }
.pco-skel-title { height: 22px; width: 65%; margin-bottom: 8px; }
.pco-skel-line { height: 12px; width: 90%; margin-bottom: 6px; }
.pco-skel-stage { aspect-ratio: 3/4; max-height: 420px; border-radius: 16px; }
.pco-skel-card { height: 380px; border-radius: 18px; }

/* ── Sticky mobile checkout bar ───────────────────────────────────── */
.pco-sticky {
  position: fixed;
  left: 0; right: 0;
  bottom: 0;
  z-index: 940;
  background: rgba(255, 253, 249, 0.97);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-top: 1px solid rgba(28, 20, 16, 0.10);
  box-shadow: 0 -6px 24px rgba(28, 20, 16, 0.08);
  padding: 10px 14px calc(10px + env(safe-area-inset-bottom));
}
.pco-sticky-inner {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 1120px;
  margin: 0 auto;
}
.pco-sticky-price { display: flex; flex-direction: column; min-width: 58px; }
.pco-sticky-price .pco-sp-now { font-size: 1.05rem; font-weight: 800; color: #1c1410; line-height: 1.1; }
.pco-sticky-price .pco-sp-mrp { font-size: 0.68rem; color: #9b8d84; text-decoration: line-through; }
.pco-sticky-price .pco-sp-off { font-size: 0.62rem; font-weight: 800; color: #0a7a3d; }

.pco-sticky-icon {
  width: 40px; height: 40px;
  flex: 0 0 auto;
  border-radius: 11px;
  border: 1.5px solid rgba(28, 20, 16, 0.14);
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: #4a3e37;
  font-size: 1rem;
  padding: 0;
}
.pco-sticky-icon.on { color: #930205; border-color: rgba(147, 2, 5, 0.4); background: rgba(147, 2, 5, 0.05); }
.pco-sticky-buy {
  flex: 1;
  border: none;
  border-radius: 12px;
  background: linear-gradient(135deg, #a70609 0%, #930205 100%);
  color: #fffdf9;
  font-size: 0.92rem;
  font-weight: 800;
  padding: 12px 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  box-shadow: 0 5px 16px rgba(147, 2, 5, 0.3);
  font-family: inherit;
  transition: transform .1s ease, opacity .15s ease;
}
.pco-sticky-buy:active:not(:disabled) { transform: scale(0.98); }
.pco-sticky-buy:disabled { opacity: 0.6; cursor: not-allowed; }

@media (min-width: 1024px) { .pco-sticky { display: none; } }

/* ── Accessibility ────────────────────────────────────────────────── */
.pco-btn:focus-visible,
.pco-arrow:focus-visible,
.pco-thumb:focus-visible,
.pco-back:focus-visible,
.pco-sticky-icon:focus-visible,
.pco-sticky-buy:focus-visible {
  outline: 2px solid #930205;
  outline-offset: 2px;
}


/* ═══ §11/§12 PAYMENT STATES + PREMIUM SUCCESS (v2026-09-07) ═════════ */

/* §5 explicit savings line */
.pco-save-line {
  font-size: 0.72rem;
  font-weight: 700;
  color: #0a7a3d;
  margin: 6px 0 2px;
}

/* §19 visible keyboard focus for all checkout controls */
.pco-root :focus-visible {
  outline: 2px solid #930205;
  outline-offset: 2px;
  border-radius: 8px;
}
.pco-sticky :focus-visible { outline-color: #fff; }

/* ── §12 premium success screen ──────────────────────────────────── */
.pco-succ { max-width: 560px; }

.pco-succ-check { display: flex; justify-content: center; margin-bottom: 4px; }
.pco-succ-check .pco-succ-c {
  stroke: #0a7a3d; stroke-width: 2.5;
  stroke-dasharray: 151; stroke-dashoffset: 151;
  animation: pco-succ-draw .55s ease-out .1s forwards;
}
.pco-succ-check .pco-succ-p {
  stroke: #0a7a3d; stroke-width: 3.4; stroke-linecap: round; stroke-linejoin: round;
  stroke-dasharray: 36; stroke-dashoffset: 36;
  animation: pco-succ-draw .35s ease-out .5s forwards;
}
@keyframes pco-succ-draw { to { stroke-dashoffset: 0; } }
@media (prefers-reduced-motion: reduce) {
  .pco-succ-check .pco-succ-c, .pco-succ-check .pco-succ-p { animation: none; stroke-dashoffset: 0; }
}

.pco-succ-prod {
  display: flex; gap: 14px; align-items: center; text-align: left;
  border: 1px solid rgba(147, 2, 5, 0.14);
  background: rgba(147, 2, 5, 0.03);
  border-radius: 14px;
  padding: 14px 16px;
  margin: 18px auto 0;
  max-width: 430px;
}
.pco-succ-cover {
  width: 52px; height: 70px; border-radius: 8px; object-fit: cover;
  flex-shrink: 0; box-shadow: 0 2px 8px rgba(0,0,0,.14);
  background: #efe7da;
}
.pco-succ-noimg {
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
}
.pco-succ-name {
  font-size: 0.92rem; font-weight: 800; color: #1c1410;
  margin-bottom: 6px; line-height: 1.35;
}
.pco-succ-rows { display: flex; flex-direction: column; gap: 3px; }
.pco-succ-row {
  display: flex; justify-content: space-between; gap: 18px;
  font-size: 0.75rem; color: #5a4a42;
}
.pco-succ-row strong { color: #1c1410; font-weight: 700; }

.pco-succ-list {
  list-style: none; margin: 16px auto 0; padding: 0;
  display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 22px;
  font-size: 0.78rem; font-weight: 700; color: #0a7a3d;
}
@media (max-width: 480px) {
  .pco-succ-list { flex-direction: column; align-items: center; gap: 6px; }
  .pco-succ-prod { padding: 12px; }
}

/* §7 swipe hint (mobile only, subtle) */
@media (max-width: 1023px) {
  .pco-thumbs::after {
    content: '';
  }
}


/* ═══ §5 FREE ACCESS EXPERIENCE (routing fix 2026-09-07) ════════════ */
.pco-free-price {
  display: flex; align-items: baseline; justify-content: center;
  gap: 10px; margin: 4px 0 2px;
}
.pco-free-price .pco-pay { font-size: 1.5rem; font-weight: 900; color: #0a7a3d; }
.pco-free-tag {
  font-size: 0.68rem; font-weight: 800; letter-spacing: 0.08em;
  color: #0a7a3d; border: 1px solid rgba(10,122,61,0.35);
  background: rgba(10,122,61,0.08);
  padding: 3px 10px; border-radius: 999px;
}