/* ============ QB HUB — premium card grid ============ */
/* Soru bankası ve alt hub sayfaları (SAT, IELTS, TOEFL, IB) için ortak */

.qb-hub-hero {
  padding: 3.5rem 0 1rem;
  position: relative;
}
.qb-hub-hero-inner {
  max-width: 760px;
  text-align: center;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.qb-hub-hero h1 {
  font-family: var(--font-display, Georgia), serif;
  font-size: 3rem;
  font-weight: 600;
  margin: 0.5rem 0 1rem;
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.qb-hub-hero .lead {
  font-size: 1.08rem;
  color: var(--text-soft);
  line-height: 1.7;
  max-width: 620px;
  margin: 0 auto;
}
.qb-hub-hero .stats {
  display: inline-flex;
  gap: 2rem;
  margin-top: 1.8rem;
  font-family: var(--font-ui);
}
.qb-hub-hero .stats .s-num {
  font-family: var(--font-display);
  font-size: 1.9rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1;
  display: block;
}
.qb-hub-hero .stats .s-lbl {
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 0.35rem;
  display: block;
  font-weight: 500;
}

.qb-hub-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.1rem;
  margin: 2.5rem auto 0;
}
.qb-hub-grid.two-col {
  grid-template-columns: repeat(2, 1fr);
  max-width: 800px;
}

.qb-hub-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 1.75rem 1.6rem 1.5rem;
  background: var(--bg-card, #fff);
  border: 1px solid var(--line, #D9D2C4);
  border-radius: 5px;
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}
.qb-hub-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(26, 34, 48, 0.08);
  border-color: var(--cat-tint, var(--text));
}
.qb-hub-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--cat-tint, #c89a3c);
}
.qb-hub-card .qb-hub-mark {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--cat-tint-soft, rgba(200, 154, 60, 0.1));
  color: var(--cat-tint, #c89a3c);
  margin-bottom: 1rem;
}
.qb-hub-card .qb-hub-mark svg { width: 22px; height: 22px; }
.qb-hub-card h3 {
  font-family: var(--font-display, Georgia), serif;
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
  letter-spacing: -0.01em;
  color: var(--text);
}
.qb-hub-card .qb-hub-desc {
  font-size: 0.92rem;
  color: var(--text-soft);
  line-height: 1.55;
  margin: 0 0 1.2rem;
  flex-grow: 1;
}
.qb-hub-card .qb-hub-meta {
  display: flex;
  gap: 1.1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  margin-top: auto;
  font-family: var(--font-ui);
}
.qb-hub-card .qb-hub-meta .m-item {
  display: flex;
  flex-direction: column;
}
.qb-hub-card .qb-hub-meta .m-num {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text);
  line-height: 1.1;
}
.qb-hub-card .qb-hub-meta .m-lbl {
  font-size: 9.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 0.25rem;
  font-weight: 500;
}
.qb-hub-card .qb-hub-cta {
  position: absolute;
  bottom: 1.5rem;
  right: 1.6rem;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-family: var(--font-ui);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--cat-tint, #c89a3c);
  opacity: 0.7;
  transition: opacity 0.15s, transform 0.15s;
}
.qb-hub-card:hover .qb-hub-cta {
  opacity: 1;
  transform: translateX(3px);
}
.qb-hub-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-family: var(--font-ui);
  font-size: 9px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 700;
  padding: 0.28rem 0.6rem;
  border-radius: 2px;
  color: #fff;
}
.qb-hub-badge.active { background: #3c825a; }
.qb-hub-badge:not(.active) { background: #999; }
.qb-hub-card.locked { opacity: 0.7; }
.qb-hub-card.locked:hover { transform: none; box-shadow: none; }

/* Per-card thematic colors */
.qb-hub-card.cat-sat   { --cat-tint: #7A3B3B; --cat-tint-soft: rgba(122, 59, 59, 0.1); }
.qb-hub-card.cat-ielts { --cat-tint: #2C5856; --cat-tint-soft: rgba(44, 88, 86, 0.1); }
.qb-hub-card.cat-toefl { --cat-tint: #4a6a8a; --cat-tint-soft: rgba(74, 106, 138, 0.1); }
.qb-hub-card.cat-ib    { --cat-tint: #6b4a8a; --cat-tint-soft: rgba(107, 74, 138, 0.1); }
.qb-hub-card.cat-rw    { --cat-tint: #7A3B3B; --cat-tint-soft: rgba(122, 59, 59, 0.1); }
.qb-hub-card.cat-math  { --cat-tint: #c89a3c; --cat-tint-soft: rgba(200, 154, 60, 0.1); }
.qb-hub-card.cat-yds            { --cat-tint: #6B3D58; --cat-tint-soft: rgba(107, 61, 88, 0.10); }
.qb-hub-card.cat-ydt            { --cat-tint: #6B3D58; --cat-tint-soft: rgba(107, 61, 88, 0.10); }
.qb-hub-card.cat-udsp           { --cat-tint: #3B6D11; --cat-tint-soft: rgba(59, 109, 17, 0.10); }
.qb-hub-card.cat-yokdil-fen     { --cat-tint: #2C5856; --cat-tint-soft: rgba(44, 88, 86, 0.10); }
.qb-hub-card.cat-yokdil-sosyal  { --cat-tint: #2A3F66; --cat-tint-soft: rgba(42, 63, 102, 0.10); }
.qb-hub-card.cat-yokdil-saglik  { --cat-tint: #A85A3C; --cat-tint-soft: rgba(168, 90, 60, 0.10); }

@media (max-width: 700px) {
  .qb-hub-hero h1 { font-size: 2.2rem; }
  .qb-hub-grid { grid-template-columns: 1fr; gap: 0.9rem; }
  .qb-hub-card { padding: 1.4rem 1.3rem 1.25rem; }
  .qb-hub-card .qb-hub-cta { position: static; margin-top: 1rem; opacity: 1; }
  .qb-hub-hero .stats { gap: 1.3rem; }
}

/* ============ COMING SOON CARD ============ */
.qb-soon {
  max-width: 560px;
  margin: 1rem auto 0;
  padding: 3rem 2.5rem;
  text-align: center;
  background: var(--bg-card, #fff);
  border: 1px solid var(--line, #D9D2C4);
  border-radius: 6px;
  position: relative;
  overflow: hidden;
}
.qb-soon::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--cat-accent, #c89a3c);
}
.qb-soon .qbs-mark {
  width: 60px;
  height: 60px;
  margin: 0 auto 1.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(200, 154, 60, 0.1);
  color: var(--cat-accent, #c89a3c);
}
.qb-soon .qbs-mark svg { width: 28px; height: 28px; }
.qb-soon .qbs-eyebrow {
  font-family: var(--font-ui, Inter), system-ui, sans-serif;
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cat-accent, #c89a3c);
  font-weight: 700;
  margin-bottom: 0.8rem;
  display: block;
}
.qb-soon h2 {
  font-family: var(--font-display, Georgia), serif;
  font-size: 1.7rem;
  font-weight: 600;
  margin: 0 0 0.6rem;
  letter-spacing: -0.01em;
  color: var(--text);
}
.qb-soon p {
  color: var(--text-soft);
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 0 auto 1.8rem;
  max-width: 380px;
}
.qb-soon .qbs-actions {
  display: flex;
  gap: 0.7rem;
  justify-content: center;
  flex-wrap: wrap;
}
.qb-soon .qbs-actions .btn {
  padding: 0.7rem 1.4rem;
  border-radius: 999px;
  font-family: var(--font-ui);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 600;
  text-decoration: none;
  border: 1.5px solid transparent;
  transition: background 0.15s, transform 0.1s, border-color 0.15s;
  display: inline-flex;
  align-items: center;
  cursor: pointer;
}
.qb-soon .qbs-actions .btn:hover { transform: translateY(-1px); }
.qb-soon .qbs-actions .btn-primary {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}
.qb-soon .qbs-actions .btn-primary:hover {
  background: var(--cat-accent, #c89a3c);
  border-color: var(--cat-accent, #c89a3c);
}
.qb-soon .qbs-actions .btn-outline {
  background: transparent;
  color: var(--text);
  border-color: var(--line);
}
.qb-soon .qbs-actions .btn-outline:hover {
  border-color: var(--text);
  background: var(--bg-soft);
}

@media (max-width: 600px) {
  .qb-soon { padding: 2rem 1.4rem; }
  .qb-soon h2 { font-size: 1.4rem; }
}

/* ============================================================
   TOPIC HERO META — Premium KPI cards
   ============================================================ */
.qb-topic-hero-inner {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.qb-topic-hero-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.9rem;
  margin-top: 1.5rem;
  padding: 0;
  background: none;
  border-left: none;
  border-radius: 0;
}

.qb-topic-hero-meta .qm-item {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 1.2rem 1.3rem;
  background: var(--bg-card, #fff);
  border: 1px solid var(--line, #ece8de);
  border-radius: 5px;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
  overflow: hidden;
}
.qb-topic-hero-meta .qm-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--cat-accent, #c89a3c);
  opacity: 0.7;
}
.qb-topic-hero-meta .qm-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(26, 34, 48, 0.06);
  border-color: var(--cat-accent, #c89a3c);
}

.qb-topic-hero-meta .qm-icon {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cat-accent, #c89a3c);
  margin-bottom: 0.7rem;
  opacity: 0.85;
}
.qb-topic-hero-meta .qm-icon svg { width: 22px; height: 22px; }

.qb-topic-hero-meta .qm-num {
  font-family: var(--font-display);
  font-size: 1.9rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1;
  letter-spacing: -0.01em;
}
.qb-topic-hero-meta .qm-num small {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-soft);
  letter-spacing: 0;
  margin-left: 0.2rem;
}
.qb-topic-hero-meta .qm-lbl {
  font-family: var(--font-ui);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 0.5rem;
  font-weight: 600;
}

/* Featured (vurgulu) KPI — örn. toplam soru sayısı */
.qb-topic-hero-meta .qm-item.featured {
  background: var(--cat-accent, #c89a3c);
  color: #fff;
  border-color: var(--cat-accent);
}
.qb-topic-hero-meta .qm-item.featured::before {
  background: rgba(255, 255, 255, 0.3);
}
.qb-topic-hero-meta .qm-item.featured .qm-icon,
.qb-topic-hero-meta .qm-item.featured .qm-num,
.qb-topic-hero-meta .qm-item.featured .qm-lbl {
  color: #fff;
  opacity: 1;
}
.qb-topic-hero-meta .qm-item.featured .qm-num small {
  color: rgba(255, 255, 255, 0.85);
}
.qb-topic-hero-meta .qm-item.featured:hover {
  filter: brightness(1.08);
  border-color: var(--cat-accent);
}

[data-theme="dark"] .qb-topic-hero-meta .qm-item {
  background: #1a1f28;
  border-color: #2d3548;
}
[data-theme="dark"] .qb-topic-hero-meta .qm-item:hover {
  border-color: var(--cat-accent, #c89a3c);
}