/* ============================================================
   Previous Year Papers — Hub styles
   ============================================================ */

:root {
  --pyp-bg:           #f4f7ff;
  --pyp-border:       #e2e8f0;
  --pyp-border-strong:#cbd5e1;
  --pyp-shadow:       0 2px 12px rgba(15, 23, 42, 0.06);

  --pyp-accent:       #2563eb;
  --pyp-accent-dark:  #1e40af;
  --pyp-accent-soft:  rgba(37, 99, 235, 0.09);

  --pyp-header-grad:  linear-gradient(135deg, #1e3a8a 0%, #2563eb 60%, #60a5fa 100%);

  --pyp-text-heading: #0f172a;
  --pyp-text-body:    #475569;
  --pyp-text-muted:   #94a3b8;

  --pyp-radius:       16px;
  --pyp-radius-pill:  999px;
  --pyp-max:          1200px;
  --pyp-pad:          clamp(1rem, 4vw, 2rem);
}

/* ── Page wrapper ───────────────────────────────────────────── */
.tbb-pyp-page {
  max-width: var(--pyp-max);
  margin: 0 auto;
  padding: 0 var(--pyp-pad) 5rem;
  background: var(--pyp-bg);
}

/* ── Header ─────────────────────────────────────────────────── */
.tbb-pyp-header {
  background: var(--pyp-header-grad);
  padding: clamp(2.5rem, 5vw, 4rem) var(--pyp-pad);
  margin: 0 calc(-1 * var(--pyp-pad)) 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.tbb-pyp-header::before,
.tbb-pyp-header::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}
.tbb-pyp-header::before {
  width: 520px; height: 520px;
  top: -180px; left: -120px;
  background: radial-gradient(circle, rgba(255,255,255,0.07) 0%, transparent 70%);
}
.tbb-pyp-header::after {
  width: 380px; height: 380px;
  bottom: -140px; right: -80px;
  background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 70%);
}

.tbb-pyp-header__inner {
  max-width: 680px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.tbb-pyp-header__title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  color: #ffffff;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
  text-shadow: 0 2px 12px rgba(0,0,0,0.15);
}

.tbb-pyp-header__description {
  font-size: 1.05rem;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.85);
}

/* ── Filters container ──────────────────────────────────────── */
.tbb-pyp-filters {
  background: #ffffff;
  border: 1px solid var(--pyp-border);
  border-radius: var(--pyp-radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
  box-shadow: var(--pyp-shadow);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* ── Search row (search box + Saved toggle) ─────────────────── */
.tbb-pyp-search-row {
  display: flex;
  align-items: stretch;
  gap: 0.6rem;
  flex-wrap: wrap;
}

/* ── Search box ─────────────────────────────────────────────── */
.tbb-pyp-search {
  position: relative;
  display: flex;
  align-items: center;
  flex: 1 1 240px;
  min-width: 0;
}

/* ── Saved toggle (next to search) ──────────────────────────── */
.tbb-pyp-saved-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  padding: 0 1.05em;
  border: 1.5px solid var(--pyp-border);
  border-radius: var(--pyp-radius-pill);
  background: #ffffff;
  color: var(--pyp-text-body);
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s, box-shadow 0.15s, transform 0.15s;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  line-height: 1;
}

.tbb-pyp-saved-toggle:hover {
  border-color: var(--pyp-accent);
  color: var(--pyp-accent);
  background: var(--pyp-accent-soft);
  transform: translateY(-1px);
}

.tbb-pyp-saved-toggle__icon {
  color: currentColor;
  flex: 0 0 auto;
}

.tbb-pyp-saved-toggle .tbb-pyp-bm-fill   { display: none; }
.tbb-pyp-saved-toggle .tbb-pyp-bm-stroke { display: block; }

.tbb-pyp-saved-toggle--active,
.tbb-pyp-saved-toggle--active:hover {
  background: var(--pyp-accent);
  border-color: var(--pyp-accent);
  color: #ffffff;
  box-shadow: 0 3px 10px rgba(37, 99, 235, 0.3);
  transform: none;
}

.tbb-pyp-saved-toggle--active .tbb-pyp-bm-stroke { display: none; }
.tbb-pyp-saved-toggle--active .tbb-pyp-bm-fill   { display: block; }

.tbb-pyp-saved-toggle--disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: auto;
}

.tbb-pyp-saved-toggle--disabled:hover {
  border-color: var(--pyp-border);
  color: var(--pyp-text-body);
  background: #ffffff;
  transform: none;
}

.tbb-pyp-saved-toggle__count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.4em;
  padding: 0 0.4em;
  background: rgba(15, 23, 42, 0.08);
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1.5;
}

.tbb-pyp-saved-toggle--active .tbb-pyp-saved-toggle__count {
  background: rgba(255, 255, 255, 0.25);
  color: #ffffff;
}

.tbb-pyp-search__icon {
  position: absolute;
  left: 1rem;
  color: var(--pyp-text-muted);
  pointer-events: none;
}

.tbb-pyp-search__input {
  width: 100%;
  padding: 0.7rem 2.75rem 0.7rem 2.75rem;
  border: 1.5px solid var(--pyp-border);
  border-radius: var(--pyp-radius-pill);
  font-size: 0.95rem;
  color: var(--pyp-text-heading);
  background: #f8faff;
  transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
  outline: none;
}

.tbb-pyp-search__input::placeholder {
  color: var(--pyp-text-muted);
}

.tbb-pyp-search__input:focus {
  border-color: var(--pyp-accent);
  background: #ffffff;
  box-shadow: 0 0 0 4px var(--pyp-accent-soft);
}

.tbb-pyp-search__clear {
  position: absolute;
  right: 0.6rem;
  width: 1.6rem;
  height: 1.6rem;
  border: 0;
  border-radius: 50%;
  background: var(--pyp-border);
  color: var(--pyp-text-heading);
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, color 0.15s;
}

.tbb-pyp-search__clear:hover {
  background: var(--pyp-accent);
  color: #ffffff;
}

/* ── Filter rows ────────────────────────────────────────────── */
.tbb-pyp-filter-row {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.tbb-pyp-filter-row__label {
  flex: 0 0 auto;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--pyp-text-muted);
  padding: 0.45em 0;
  min-width: 3.5rem;
}

.tbb-pyp-filter-row__pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  flex: 1;
  min-width: 0;
}

/* ── Pills ──────────────────────────────────────────────────── */
.tbb-pyp-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  padding: 0.4em 0.95em;
  border: 1.5px solid var(--pyp-border);
  border-radius: var(--pyp-radius-pill);
  background: #ffffff;
  color: var(--pyp-text-body);
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.15s, color 0.15s, border-color 0.15s, box-shadow 0.15s;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.tbb-pyp-pill:hover {
  border-color: var(--pyp-accent);
  color: var(--pyp-accent);
  background: var(--pyp-accent-soft);
}

.tbb-pyp-pill--active,
.tbb-pyp-pill--active:hover {
  background: var(--pyp-accent);
  border-color: var(--pyp-accent);
  color: #ffffff;
  box-shadow: 0 3px 10px rgba(37, 99, 235, 0.3);
}

.tbb-pyp-pill__count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.4em;
  padding: 0 0.4em;
  background: rgba(15, 23, 42, 0.08);
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 700;
  line-height: 1.5;
}

.tbb-pyp-pill--active .tbb-pyp-pill__count {
  background: rgba(255, 255, 255, 0.25);
  color: #ffffff;
}

/* ── Active filter summary ──────────────────────────────────── */
.tbb-pyp-active {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.55rem;
  padding-top: 0.5rem;
  border-top: 1px dashed var(--pyp-border);
}

.tbb-pyp-active__label {
  font-size: 0.85rem;
  color: var(--pyp-text-muted);
  font-weight: 600;
}

.tbb-pyp-active__tag {
  display: inline-flex;
  align-items: center;
  padding: 0.25em 0.75em;
  background: var(--pyp-accent-soft);
  color: var(--pyp-accent-dark);
  border-radius: var(--pyp-radius-pill);
  font-size: 0.8rem;
  font-weight: 600;
}

.tbb-pyp-active__clear {
  margin-left: auto;
  font-size: 0.85rem;
  color: var(--pyp-accent);
  text-decoration: none;
  font-weight: 600;
}

.tbb-pyp-active__clear:hover { text-decoration: underline; }

/* ── Grid ───────────────────────────────────────────────────── */
.tbb-pyp-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.25rem;
}

/* ── Paper card ─────────────────────────────────────────────── */
.tbb-pyp-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.95rem;
  background: linear-gradient(180deg, #ffffff 0%, #fbfcff 100%);
  border: 1px solid var(--pyp-border);
  border-radius: var(--pyp-radius);
  padding: 1.6rem 1.55rem 1.4rem;
  box-shadow: var(--pyp-shadow);
  transition: box-shadow 0.25s, transform 0.25s, border-color 0.25s;
  overflow: hidden;
  isolation: isolate;
}

/* Top accent stripe */
.tbb-pyp-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, #1e40af 0%, var(--pyp-accent) 50%, #60a5fa 100%);
  opacity: 0.9;
  transition: opacity 0.25s, height 0.25s;
}

/* Soft decorative glow in the corner */
.tbb-pyp-card::after {
  content: '';
  position: absolute;
  top: -40px; right: -40px;
  width: 160px; height: 160px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.07) 0%, transparent 70%);
  pointer-events: none;
  z-index: -1;
  transition: opacity 0.3s;
  opacity: 0.6;
}

.tbb-pyp-card:hover {
  box-shadow: 0 18px 44px rgba(37, 99, 235, 0.18), 0 4px 12px rgba(37, 99, 235, 0.08);
  transform: translateY(-4px);
  border-color: rgba(37, 99, 235, 0.35);
}

.tbb-pyp-card:hover::before { opacity: 1; height: 5px; }
.tbb-pyp-card:hover::after  { opacity: 1; }

/* ── Bookmark button (on each card) ─────────────────────────── */
.tbb-pyp-bookmark-btn {
  position: absolute;
  top: 0.7rem;
  right: 0.7rem;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  padding: 0;
  background: transparent;
  border: 0;
  border-radius: 50%;
  color: var(--pyp-text-muted);
  cursor: pointer;
  transition: background 0.18s, color 0.18s, transform 0.18s;
}

.tbb-pyp-bookmark-btn:hover {
  background: var(--pyp-accent-soft);
  color: var(--pyp-accent);
  transform: scale(1.1);
}

.tbb-pyp-bookmark-btn:focus-visible {
  outline: 2px solid var(--pyp-accent);
  outline-offset: 2px;
}

.tbb-pyp-bookmark-btn .tbb-pyp-bm-fill   { display: none; }
.tbb-pyp-bookmark-btn .tbb-pyp-bm-stroke { display: block; }

.tbb-pyp-bookmark-btn--saved {
  color: var(--pyp-accent);
}

.tbb-pyp-bookmark-btn--saved .tbb-pyp-bm-stroke { display: none; }
.tbb-pyp-bookmark-btn--saved .tbb-pyp-bm-fill   { display: block; }

@keyframes tbb-pyp-bm-pop {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.35); }
  70%  { transform: scale(0.9); }
  100% { transform: scale(1); }
}

.tbb-pyp-bookmark-btn--pop {
  animation: tbb-pyp-bm-pop 320ms cubic-bezier(.4, 0, .2, 1) forwards;
}

@media (prefers-reduced-motion: reduce) {
  .tbb-pyp-bookmark-btn,
  .tbb-pyp-saved-toggle { transition: none; }
  .tbb-pyp-bookmark-btn--pop { animation: none; }
}

/* ── Top row (badges) ───────────────────────────────────────── */
.tbb-pyp-card__top {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  /* Keep badges clear of the absolutely-positioned bookmark button */
  padding-right: 2.4rem;
}

.tbb-pyp-card__badge {
  display: inline-flex;
  align-items: center;
  padding: 0.38em 0.85em;
  border-radius: var(--pyp-radius-pill);
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  line-height: 1;
  white-space: nowrap;
}

.tbb-pyp-card__badge--exam {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.10), rgba(37, 99, 235, 0.18));
  color: var(--pyp-accent-dark);
  border: 1px solid rgba(37, 99, 235, 0.22);
}

.tbb-pyp-card__badge--year {
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  color: #ffffff;
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

/* ── Title ──────────────────────────────────────────────────── */
.tbb-pyp-card__title {
  font-size: 1.22rem;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.015em;
  margin: 0;
  color: var(--pyp-text-heading);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tbb-pyp-card__title a {
  color: inherit;
  text-decoration: none;
  transition: color 0.15s;
}

.tbb-pyp-card__title a:hover {
  color: var(--pyp-accent);
}

/* ── Meta row (PDF / Solutions) ─────────────────────────────── */
.tbb-pyp-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: auto;
  padding: 0.55rem 0 0.25rem;
  border-top: 1px dashed var(--pyp-border);
}

.tbb-pyp-card__meta-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--pyp-text-body);
  letter-spacing: 0.01em;
}

/* PDF — red signal */
.tbb-pyp-card__meta-item:nth-child(1) {
  color: #b91c1c;
}
.tbb-pyp-card__meta-item:nth-child(1) svg {
  color: #dc2626;
  background: rgba(220, 38, 38, 0.08);
  border-radius: 4px;
  padding: 2px;
  width: 18px;
  height: 18px;
}

/* Solutions — green check */
.tbb-pyp-card__meta-item:nth-child(2) {
  color: #047857;
}
.tbb-pyp-card__meta-item:nth-child(2) svg {
  color: #10b981;
  background: rgba(16, 185, 129, 0.10);
  border-radius: 50%;
  padding: 2px;
  width: 18px;
  height: 18px;
  stroke-width: 2.5;
}

/* ── CTA button ─────────────────────────────────────────────── */
.tbb-pyp-card__btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  align-self: stretch;
  justify-content: center;
  padding: 0.75em 1.4em;
  border: 0;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: #ffffff;
  text-decoration: none;
  background: linear-gradient(135deg, var(--pyp-accent) 0%, var(--pyp-accent-dark) 100%);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.18);
  transition: transform 0.2s, box-shadow 0.2s, gap 0.2s, filter 0.2s;
  margin-top: 0.15rem;
  position: relative;
  overflow: hidden;
}

.tbb-pyp-card__btn::after {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.22), transparent);
  transition: left 0.5s ease;
}

.tbb-pyp-card__btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.42), inset 0 1px 0 rgba(255, 255, 255, 0.22);
  gap: 0.7em;
  color: #ffffff;
  filter: brightness(1.05);
}

.tbb-pyp-card__btn:hover::after { left: 100%; }

/* ── Empty / no-results ─────────────────────────────────────── */
.tbb-pyp-empty {
  text-align: center;
  padding: 4rem 1rem;
  background: #ffffff;
  border: 1px dashed var(--pyp-border-strong);
  border-radius: var(--pyp-radius);
}

.tbb-pyp-empty__title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--pyp-text-heading);
  margin: 0 0 0.5rem;
}

.tbb-pyp-empty__hint {
  color: var(--pyp-text-body);
  margin: 0 0 1.25rem;
}

.tbb-pyp-empty__btn {
  display: inline-flex;
  align-items: center;
  padding: 0.6em 1.4em;
  background: var(--pyp-accent);
  color: #ffffff;
  border-radius: var(--pyp-radius-pill);
  font-weight: 600;
  text-decoration: none;
  transition: background 0.15s;
}

.tbb-pyp-empty__btn:hover { background: var(--pyp-accent-dark); }

.tbb-pyp-no-results {
  text-align: center;
  color: var(--pyp-text-muted);
  padding: 2.5rem 1rem;
  font-size: 0.95rem;
  margin: 1rem 0 0;
}

/* ── Pagination ─────────────────────────────────────────────── */
.tbb-pyp-pagination {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 3rem;
}

.tbb-pyp-pagination .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  min-width: 2.5rem;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 50%;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--pyp-text-heading);
  text-decoration: none;
  background: #ffffff;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.08), 0 1px 1px rgba(15, 23, 42, 0.04);
  transition: background 0.15s, color 0.15s, box-shadow 0.15s, transform 0.15s;
}

.tbb-pyp-pagination .page-numbers:hover {
  background: var(--pyp-accent-soft);
  color: var(--pyp-accent-dark);
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.15);
  transform: translateY(-1px);
}

.tbb-pyp-pagination .page-numbers.current,
.tbb-pyp-pagination .page-numbers.current:hover {
  background: var(--pyp-accent);
  color: #ffffff;
  box-shadow: 0 3px 10px rgba(37, 99, 235, 0.35);
  pointer-events: none;
  transform: none;
}

.tbb-pyp-pagination .page-numbers.prev,
.tbb-pyp-pagination .page-numbers.next {
  font-size: 1rem;
  color: var(--pyp-text-muted);
}

.tbb-pyp-pagination .page-numbers.dots {
  border-color: transparent;
  background: transparent;
  box-shadow: none;
  pointer-events: none;
  color: var(--pyp-text-muted);
}

.tbb-pyp-pagination .page-numbers.dots:hover {
  transform: none;
  background: transparent;
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 640px) {
  .tbb-pyp-filter-row {
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
  }
  .tbb-pyp-filter-row__label {
    padding: 0;
  }
  .tbb-pyp-grid {
    grid-template-columns: 1fr;
  }
  .tbb-pyp-active__clear {
    margin-left: 0;
  }
}