/* ========== PAST-PAPER ANSWERS PAGE (/papers/...) ========== */
.pv-wrap { max-width: 980px; margin: 0 auto; padding: 120px 16px 40px; }
.pv-back { color: var(--brand-primary); text-decoration: none; font-weight: 700; font-size: 0.9rem; }
.pv-h1 { font-size: clamp(1.8rem, 4.5vw, 2.6rem); line-height: 1.15; margin: 14px 0 6px; }
.pv-h1 span { display: block; font-size: 0.55em; font-weight: 600; color: var(--text-muted); margin-top: 6px; }
.pv-meta { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 18px; }
.pv-source { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 18px; padding: 18px; border-radius: 18px;
  border: 1px solid var(--border-glow); background: linear-gradient(160deg, rgba(0, 212, 255, 0.08), transparent 70%); margin-bottom: 26px; }
.pv-owner { color: var(--text-muted); font-size: 0.86rem; line-height: 1.6; margin: 0; flex: 1 1 260px; }

.pv-pages { display: grid; gap: 14px; margin-bottom: 30px; }
.pv-page { margin: 0; border-radius: 12px; overflow: hidden; background: #fff; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4); }
.pv-page img { display: block; width: 100%; height: auto; }
.pv-page figcaption { background: var(--card-bg); color: var(--text-muted); font-size: 0.75rem; text-align: center; padding: 6px; }

.pv-bar { position: sticky; top: 91px; z-index: 30; display: flex; flex-wrap: wrap; align-items: center; gap: 10px; padding: 12px 0;
  background: rgba(5, 8, 22, 0.92); backdrop-filter: blur(10px); }
.pv-score { flex: 1 1 auto; font-weight: 700; color: var(--brand-primary); }
.pv-all, .pv-reset { padding: 8px 14px; border-radius: 30px; font: inherit; font-size: 0.82rem; font-weight: 700; cursor: pointer;
  border: 1px solid rgba(255, 255, 255, 0.16); background: transparent; color: var(--text-light); }
.pv-all:hover, .pv-reset:hover { border-color: var(--brand-primary); color: var(--brand-primary); }

.pv-grid { display: grid; gap: 10px; }
.pv-q { padding: 14px 16px; border-radius: 16px; border: 1px solid rgba(255, 255, 255, 0.09); background: var(--card-bg); scroll-margin-top: 160px; }
.pv-q.open { border-color: rgba(0, 212, 255, 0.35); }
.pv-q-head { display: flex; gap: 12px; align-items: baseline; margin-bottom: 10px; }
.pv-n { flex: none; min-width: 34px; height: 34px; display: grid; place-items: center; border-radius: 10px; font-weight: 800;
  background: rgba(0, 212, 255, 0.12); color: var(--brand-primary); }
.pv-topic { font-weight: 600; line-height: 1.4; }
.pv-q-actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.pv-choice { width: 42px; height: 38px; border-radius: 10px; font: inherit; font-weight: 800; cursor: pointer;
  border: 1px solid rgba(255, 255, 255, 0.18); background: rgba(255, 255, 255, 0.03); color: var(--text-light); }
.pv-choice:hover { border-color: var(--brand-primary); }
.pv-choice.good { background: rgba(46, 230, 139, 0.2); border-color: rgb(46, 230, 139); color: rgb(46, 230, 139); }
.pv-choice.bad { background: rgba(255, 90, 90, 0.15); border-color: #ff6b6b; color: #ff8a8a; }
.pv-see { margin-left: auto; padding: 9px 14px; border-radius: 30px; font: inherit; font-size: 0.84rem; font-weight: 700; cursor: pointer;
  border: none; background: var(--brand-primary); color: #050816; }
.pv-tutor { padding: 8px 14px; border-radius: 30px; font-size: 0.84rem; font-weight: 700; text-decoration: none;
  border: 1px solid rgba(255, 196, 0, 0.5); color: rgb(255, 196, 0); }
.pv-tutor:hover { background: rgba(255, 196, 0, 0.1); }
.pv-feedback { margin: 8px 0 0; font-size: 0.88rem; min-height: 0; }
.pv-feedback:empty { display: none; }
.pv-feedback.ok { color: rgb(46, 230, 139); } .pv-feedback.no { color: #ff8a8a; }
.pv-answer { margin-top: 10px; padding: 12px 14px; border-radius: 12px; background: rgba(46, 230, 139, 0.07); border-left: 3px solid rgb(46, 230, 139); }
.pv-answer strong { color: rgb(46, 230, 139); }
.pv-answer p { margin: 6px 0 0; color: var(--text-light); line-height: 1.6; font-size: 0.93rem; }
body.pv-body { overflow-x: clip; }
@media (max-width: 640px) {
  .pv-wrap { padding-top: 105px; }
  .pv-bar { top: 84px; }
  .pv-see { margin-left: 0; }
  .pv-choice { width: 46px; height: 42px; }
}
@media (max-width: 640px) {
  .pv-q-actions { display: grid; grid-template-columns: repeat(4, 1fr); }
  body[data-mcq="0"] .pv-q-actions { grid-template-columns: 1fr 1fr; }
  .pv-choice { width: auto; }
  .pv-see, .pv-tutor { grid-column: span 2; text-align: center; }
}

/* ---- every past paper: page pictures + buttons ---- */
.pv-h2 { font-size: 1.4rem; margin: 10px 0 12px; }
.pv-actions { display: flex; flex-wrap: wrap; gap: 10px; flex: 1 1 100%; }
.pv-actions .apply-btn { margin: 0; }
.pv-tutor-all { display: inline-flex; align-items: center; padding: 12px 20px; border-radius: 40px; font-weight: 700; text-decoration: none;
  border: 1px solid rgba(255, 196, 0, 0.55); color: rgb(255, 196, 0); }
.pv-tutor-all:hover { background: rgba(255, 196, 0, 0.1); }
.pv-page { scroll-margin-top: 100px; }
.pv-page figcaption { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px; padding: 8px 12px; }
.pv-page-tutor { padding: 7px 14px; border-radius: 30px; font-size: 0.8rem; font-weight: 700; text-decoration: none;
  background: rgba(255, 196, 0, 0.12); border: 1px solid rgba(255, 196, 0, 0.5); color: rgb(255, 196, 0); }
.pv-page-tutor:hover { background: rgba(255, 196, 0, 0.22); }
.pv-noans { padding: 20px; border-radius: 18px; border: 1px dashed rgba(255, 255, 255, 0.2); background: var(--card-bg); margin: 10px 0 30px; }
.pv-noans p { color: var(--text-muted); line-height: 1.6; margin: 0 0 14px; }
.pv-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 12px; margin: 10px 0 30px; }
.pv-card { display: flex; flex-direction: column; gap: 4px; padding: 16px; border-radius: 16px; text-decoration: none; color: var(--text-light);
  border: 1px solid rgba(255, 255, 255, 0.09); background: var(--card-bg); transition: border-color .2s, transform .2s; }
.pv-card:hover { border-color: var(--brand-primary); transform: translateY(-2px); }
.pv-card span { color: var(--text-muted); font-size: 0.85rem; }
.pv-card em { color: var(--brand-primary); font-style: normal; font-weight: 700; font-size: 0.85rem; margin-top: 6px; }
@media (max-width: 640px) {
  .pv-actions .apply-btn, .pv-tutor-all { flex: 1 1 100%; justify-content: center; text-align: center; }
  .pv-page figcaption { justify-content: center; }
}
.pv-wrap section { padding: 0; }            /* the site-wide section padding is for the home page */
.pv-questions { margin-top: 10px; }
#answers { scroll-margin-top: 100px; }
.pv-card img { display: block; width: calc(100% + 32px); margin: -16px -16px 10px; height: 120px; object-fit: cover; object-position: top;
  border-radius: 16px 16px 0 0; background: #fff; }