.page-wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}
.page-header { margin-bottom: 28px; }
.page-title {
  font-family: 'Manrope', system-ui, sans-serif;
  font-size: 32px; font-weight: 800;
  color: #eef1fc;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}
.page-subtitle {
  font-size: 15px;
  color: #8d95b3;
  line-height: 1.6;
  max-width: 620px;
}

/* Seviye filtresi */
.level-pill-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.level-pill {
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid rgba(148,163,196,0.2);
  background: transparent;
  color: #8d95b3;
  font-family: 'Space Grotesk', monospace;
  font-size: 13px; font-weight: 600;
  cursor: pointer;
  transition: all .15s ease;
}
.level-pill:hover { background: rgba(255,255,255,0.05); color: #eef1fc; }
.level-pill.active {
  background: linear-gradient(135deg, #3a63ec, #6d8dff);
  border-color: transparent;
  color: #f5f7ff;
}

/* Arama */
.search-row { margin-bottom: 28px; }
.search-input {
  width: 100%;
  padding: 13px 18px;
  border-radius: 12px;
  border: 1px solid rgba(148,163,196,0.18);
  background: #171b2c;
  color: #eef1fc;
  font-size: 14px;
  font-family: 'Manrope', system-ui, sans-serif;
}
.search-input::placeholder { color: #6b7291; }
.search-input:disabled { opacity: .55; cursor: not-allowed; }

/* Konu grid — dersler geldikçe kart olarak dolacak */
.topics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 8px;
}
.topic-card {
  background: #171b2c;
  border: 1px solid rgba(148,163,196,0.16);
  border-radius: 16px;
  padding: 20px;
  text-decoration: none;
  display: block;
  transition: transform .15s ease, border-color .15s ease;
}
.topic-card:hover { transform: translateY(-2px); border-color: rgba(109,141,255,0.35); }
.topic-badge {
  display: inline-block;
  font-family: 'Space Grotesk', monospace;
  font-size: 10px; font-weight: 700;
  letter-spacing: .06em;
  color: #a8c0ff;
  background: rgba(58,99,236,0.14);
  border: 1px solid rgba(109,141,255,0.28);
  padding: 3px 9px;
  border-radius: 999px;
  margin-bottom: 10px;
}
.topic-title { font-family: 'Manrope', sans-serif; font-size: 15px; font-weight: 700; color: #eef1fc; }

/* Boş durum */
.empty-state {
  text-align: center;
  padding: 64px 24px;
  background: #171b2c;
  border: 1px dashed rgba(148,163,196,0.22);
  border-radius: 20px;
}
.empty-icon-box {
  width: 60px; height: 60px;
  margin: 0 auto 18px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(58,99,236,0.18), rgba(109,141,255,0.08));
  border: 1px solid rgba(148,163,196,0.18);
  display: flex; align-items: center; justify-content: center;
}
.empty-icon-box .material-symbols-outlined { font-size: 28px; color: #a8c0ff; }
.empty-title {
  font-family: 'Manrope', sans-serif;
  font-size: 18px; font-weight: 800;
  color: #eef1fc;
  margin-bottom: 8px;
}
.empty-desc {
  font-size: 14px;
  color: #8d95b3;
  max-width: 420px;
  margin: 0 auto 22px;
  line-height: 1.6;
}
.empty-btn {
  display: inline-block;
  padding: 11px 20px;
  border-radius: 12px;
  background: linear-gradient(135deg, #3a63ec, #6d8dff);
  color: #f5f7ff;
  font-family: 'Manrope', sans-serif;
  font-size: 13px; font-weight: 700;
  text-decoration: none;
}