/* Past paper preview page — landing theme */

.pp-page {
  background: var(--bg);
  padding-bottom: 0;
}

.pp-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px 48px;
}

.pp-breadcrumb {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  line-height: 1.5;
}

.pp-breadcrumb a {
  color: var(--blue);
  text-decoration: none;
}

.pp-breadcrumb a:hover {
  text-decoration: underline;
}

.pp-breadcrumb-sep {
  margin: 0 8px;
  color: #94a3b8;
}

.pp-header {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px 32px;
  margin-bottom: 28px;
  box-shadow: var(--shadow);
}

.pp-preview-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: #fff8e6;
  color: #b45309;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 999px;
  border: 1px solid #fcd34d;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 14px;
}

.pp-title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 400;
  color: var(--navy);
  margin: 0 0 10px;
  line-height: 1.25;
}

.pp-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  margin: 0 0 22px;
  line-height: 1.5;
}

.pp-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.pp-stat {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 12px;
  text-align: center;
}

.pp-stat-num {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--blue);
  line-height: 1;
  margin-bottom: 6px;
}

.pp-stat-label {
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pp-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 28px;
  align-items: start;
}

.pp-answers {
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-width: 0;
}

.pp-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  box-shadow: var(--shadow);
}

.pp-card:hover {
  box-shadow: var(--shadow-lg);
}

.pp-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--border);
}

.pp-question-num {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--navy);
}

.pp-question-num i {
  color: var(--teal);
}

.pp-marks {
  background: var(--blue);
  color: #fff;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 700;
  white-space: nowrap;
}

.pp-answer-box {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text);
  padding: 20px 22px;
  background: linear-gradient(135deg, #f0f7ff 0%, #f8fafc 100%);
  border-radius: var(--radius-sm);
  margin-bottom: 18px;
  border-left: 4px solid var(--blue);
}

.pp-answer-box-label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pp-answer-text {
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--navy);
}

.pp-answer-missing,
.pp-explanation-missing {
  padding: 18px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
  background: var(--bg);
  border-radius: var(--radius-sm);
}

.pp-explanation {
  background: var(--bg);
  border-left: 4px solid var(--teal);
  padding: 20px 22px;
  border-radius: var(--radius-sm);
}

.pp-explanation h4 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 12px;
}

.pp-explanation h4 i {
  color: var(--gold);
}

.pp-explanation .markdown-content {
  line-height: 1.75;
  color: var(--text);
  font-size: 0.9375rem;
}

.pp-empty {
  text-align: center;
  padding: 48px 28px;
}

.pp-empty i {
  font-size: 2.5rem;
  color: var(--gold);
  margin-bottom: 16px;
}

.pp-empty h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 10px;
}

.pp-empty p {
  color: var(--text-muted);
  margin: 0;
}

.pp-locked {
  text-align: center;
  padding: 48px 32px;
  background: linear-gradient(135deg, #f0f7ff 0%, #e8f4ff 100%);
  border: 2px dashed #93c5fd;
}

.pp-locked i {
  font-size: 2.75rem;
  color: var(--blue);
  opacity: 0.7;
  margin-bottom: 16px;
}

.pp-locked-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--navy);
  margin: 0 0 10px;
}

.pp-locked-desc {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin: 0 0 24px;
}

/* Sidebar */
.pp-sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.pp-pdf {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  position: sticky;
  top: 88px;
}

.pp-pdf-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
}

.pp-pdf-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--navy);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.pp-pdf-title i {
  color: var(--blue);
}

.pp-pdf-link {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--blue);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.pp-pdf-link:hover {
  text-decoration: underline;
}

.pp-pdf-frame {
  width: 100%;
  height: 520px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
}

.pp-pdf-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 520px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  text-align: center;
  color: var(--text-muted);
}

.pp-pdf-empty i {
  font-size: 2.5rem;
  display: block;
  margin-bottom: 12px;
  color: #94a3b8;
}

.pp-pdf-hint {
  margin: 12px 0 0;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
}

.pp-pdf-hint a {
  color: var(--blue);
  font-weight: 600;
}

/* Purchase card — aligned with mark-scheme */
.pp-purchase {
  background: var(--bg-white);
  border: 1px solid #c5d9f5;
  border-radius: var(--radius);
  padding: 28px 24px 24px;
  box-shadow: var(--shadow);
}

.pp-purchase-price {
  text-align: center;
  margin-bottom: 18px;
}

.pp-purchase-amount {
  font-size: 3rem;
  font-weight: 800;
  color: var(--blue);
  line-height: 1;
  margin-bottom: 6px;
}

.pp-purchase-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 600;
}

.pp-purchase-actions {
  margin-bottom: 18px;
}

.pp-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 14px 20px;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 700;
  font-family: inherit;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
  box-sizing: border-box;
}

.pp-btn-unlock {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 4px 14px rgba(0, 102, 255, 0.35);
}

.pp-btn-unlock:hover {
  background: var(--blue-dark);
  color: #fff;
  transform: translateY(-1px);
}

.pp-btn-in-cart {
  background: var(--teal);
  color: #fff;
  pointer-events: none;
}

.pp-btn-outline {
  background: #fff;
  color: var(--blue);
  border: 2px solid var(--blue);
  margin-top: 10px;
}

.pp-btn-outline:hover {
  background: #f0f7ff;
  color: var(--blue);
}

.pp-features {
  list-style: none;
  margin: 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--border);
}

.pp-feature {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 0;
  font-size: 0.875rem;
  color: var(--text);
}

.pp-feature i {
  color: var(--teal);
  margin-top: 2px;
}

.pp-secure {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 0.8125rem;
  color: var(--text-muted);
  text-align: center;
}

.pp-secure i {
  color: var(--teal);
}

.pp-trust {
  background: linear-gradient(135deg, #f0f7ff 0%, #e8f4ff 100%);
  border-top: 1px solid #c5d9f5;
  padding: 24px 20px;
}

.pp-trust-inner {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.pp-trust-title {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--navy);
  margin: 0;
}

.pp-trust-title i {
  color: var(--blue);
}

@media (max-width: 992px) {
  .pp-layout {
    grid-template-columns: 1fr;
  }

  .pp-pdf {
    position: static;
  }

  .pp-stats {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .pp-container {
    padding: 16px 12px 32px;
  }

  .pp-header,
  .pp-card {
    padding: 22px 20px;
  }

  .pp-pdf-frame,
  .pp-pdf-empty {
    height: 400px;
  }
}