.konu-gated-section {
  position: relative;
  margin-top: 24px;
}

.konu-gated-section.blurred > h2,
.konu-gated-section.blurred > h3,
.konu-gated-section.blurred > p,
.konu-gated-section.blurred > ul,
.konu-gated-section.blurred > ol,
.konu-gated-section.blurred > table,
.konu-gated-section.blurred > div:not(.konu-gate-overlay):not(.konu-quiz-section),
.konu-gated-section.blurred > .konu-card,
.konu-gated-section.blurred > .formula-box,
.konu-gated-section.blurred > .example-box,
.konu-gated-section.blurred > .tip-box,
.konu-gated-section.blurred > .warning-box,
.konu-gated-section.blurred > .info-box,
.konu-gated-section.blurred > .technique-box,
.konu-gated-section.blurred > .rule-table,
.konu-gated-section.blurred > .faq-list,
.konu-gated-section.blurred > .related-links {
  filter: blur(4px);
  pointer-events: none;
  user-select: none;
}

.konu-gate-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, rgba(250,250,250,0) 0%, rgba(250,250,250,.85) 20%, rgba(250,250,250,.98) 50%);
  z-index: 10;
  padding: 40px 24px;
  text-align: center;
  border-radius: var(--radius-lg);
}

.konu-gate-overlay.hidden { display: none; }

.konu-gate-icon {
  width: 56px;
  height: 56px;
  background: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.konu-gate-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--primary);
}

.konu-gate-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.konu-gate-desc {
  font-size: .95rem;
  color: var(--text-secondary);
  max-width: 400px;
  margin-bottom: 20px;
  line-height: 1.6;
}

.konu-gate-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius);
  font-size: .95rem;
  font-weight: 600;
  transition: all var(--transition);
  text-decoration: none;
}
.konu-gate-cta:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.konu-gate-login {
  margin-top: 12px;
  font-size: .875rem;
  color: var(--text-secondary);
}
.konu-gate-login a {
  color: var(--primary);
  font-weight: 600;
}

.konu-dashboard-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 32px;
  padding: 20px;
  background: var(--primary-light);
  border: 1px solid rgba(80, 70, 229, .15);
  border-radius: var(--radius-lg);
  text-align: center;
}
.konu-dashboard-cta.hidden { display: none; }

.konu-dashboard-cta a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius);
  font-size: .9rem;
  font-weight: 600;
  transition: all var(--transition);
}
.konu-dashboard-cta a:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-1px);
}

.konu-sticky-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(250, 250, 250, .95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  z-index: 90;
  transform: translateY(100%);
  transition: transform .3s ease;
}
.konu-sticky-bar.visible { transform: translateY(0); }
.konu-sticky-bar.hidden { display: none; }

.konu-sticky-bar p {
  font-size: .9rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin: 0;
}
.konu-sticky-bar a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: .85rem;
  font-weight: 600;
  white-space: nowrap;
  text-decoration: none;
}
.konu-sticky-bar a:hover {
  background: var(--primary-dark);
  color: #fff;
}

.konu-quiz-section {
  margin: 40px 0;
  padding: 28px;
  background: linear-gradient(135deg, #f8fafc, #eff6ff);
  border: 2px solid var(--primary);
  border-radius: var(--radius-lg);
}

.konu-quiz-section h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.konu-quiz-question {
  margin-bottom: 24px;
  padding: 20px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.konu-quiz-question p {
  font-size: .95rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 12px;
  line-height: 1.6;
}

.konu-quiz-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.konu-quiz-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all .15s ease;
  font-size: .9rem;
  color: var(--text);
}
.konu-quiz-option:hover {
  border-color: var(--primary);
  background: var(--primary-light);
}
.konu-quiz-option.selected {
  border-color: var(--primary);
  background: var(--primary-light);
}
.konu-quiz-option.correct {
  border-color: #16a34a;
  background: #f0fdf4;
  color: #15803d;
}
.konu-quiz-option.wrong {
  border-color: #dc2626;
  background: #fef2f2;
  color: #991b1b;
}
.konu-quiz-option.disabled {
  pointer-events: none;
  opacity: .7;
}

.konu-quiz-option .option-letter {
  width: 28px;
  height: 28px;
  min-width: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-alt);
  border-radius: 50%;
  font-size: .8rem;
  font-weight: 700;
}
.konu-quiz-option.correct .option-letter { background: #dcfce7; }
.konu-quiz-option.wrong .option-letter { background: #fee2e2; }

.konu-quiz-explanation {
  display: none;
  margin-top: 12px;
  padding: 12px 16px;
  background: #f0fdf4;
  border-left: 3px solid #16a34a;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: .85rem;
  color: #166534;
  line-height: 1.6;
}
.konu-quiz-explanation.visible { display: block; }

.konu-quiz-result {
  display: none;
  margin-top: 20px;
  padding: 20px;
  background: var(--bg);
  border-radius: var(--radius);
  text-align: center;
}
.konu-quiz-result.visible { display: block; }

.konu-quiz-score {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
}

.konu-quiz-score-label {
  font-size: .85rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

.konu-quiz-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding: 12px 24px;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius);
  font-size: .9rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition);
}
.konu-quiz-cta:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-1px);
}

@media (max-width: 768px) {
  .konu-gate-overlay { padding: 32px 16px; }
  .konu-sticky-bar { flex-direction: column; gap: 8px; padding: 10px 16px; }
  .konu-quiz-section { padding: 20px 16px; }
}