/* Category pages */
.category-hero {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 32px;
  padding: 32px 20px;
  border-radius: var(--radius);
  margin-bottom: 0;
}

.btc-hero { background: linear-gradient(135deg, rgba(247,147,26,0.05) 0%, transparent 100%); border-bottom: 1px solid var(--border); }
.eth-hero { background: linear-gradient(135deg, rgba(98,126,234,0.05) 0%, transparent 100%); border-bottom: 1px solid var(--border); }
.defi-hero { background: linear-gradient(135deg, rgba(123,63,228,0.05) 0%, transparent 100%); border-bottom: 1px solid var(--border); }
.learn-hero { background: linear-gradient(135deg, rgba(59,130,246,0.05) 0%, transparent 100%); border-bottom: 1px solid var(--border); }

.cat-hero-left { display: flex; flex-direction: column; justify-content: center; }

.cat-breadcrumb { font-size: 13px; color: var(--text3); margin-bottom: 16px; }
.cat-breadcrumb a { color: var(--text2); }
.cat-breadcrumb a:hover { color: var(--accent2); }

.cat-badge-big { font-size: 52px; margin-bottom: 8px; }

.cat-title { font-size: 40px; font-weight: 800; margin-bottom: 12px; letter-spacing: -0.5px; }
.cat-sym { color: var(--text3); font-size: 28px; font-weight: 400; }

.cat-desc { font-size: 15px; color: var(--text2); line-height: 1.6; margin-bottom: 20px; }

.cat-stats {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.cat-stat { display: flex; flex-direction: column; gap: 2px; }
.cs-l { font-size: 11px; color: var(--text3); text-transform: uppercase; letter-spacing: 0.5px; }
.cs-v { font-size: 15px; font-weight: 700; }

.cat-hero-right { display: flex; flex-direction: column; gap: 12px; }

.cat-chart-title { font-size: 12px; color: var(--text3); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }

.cat-big-chart { border-radius: 8px; }

/* TradingView live chart replaces cat-big-chart */
.tv-cat-chart {
  height: 220px;
  border-radius: 8px;
  overflow: hidden;
}
.tv-cat-chart .tradingview-widget-container__widget {
  height: 100%;
}

.cat-chart-labels {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text3);
}

.btc-key-metrics, .eth-key-metrics, .defi-key-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.bkm, .ekm, .dkm {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.bkm span, .ekm span, .dkm span { font-size: 11px; color: var(--text3); }
.bkm strong, .ekm strong, .dkm strong { font-size: 14px; font-weight: 700; }

/* Category content layout */
.category-content { padding: 32px 20px 60px; }

.cat-news-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
}

.cat-main { }

.cat-featured {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 2px;
}

.sort-tabs { display: flex; gap: 6px; }

.cat-sidebar { display: flex; flex-direction: column; gap: 20px; }

/* BTC price widget in sidebar */
.btc-price-widget { padding: 4px 0; }
.btc-big-price { font-size: 26px; font-weight: 800; margin-bottom: 4px; }
.btc-change { font-size: 13px; font-weight: 500; margin-bottom: 12px; }
.btc-mini-chart svg { width: 100%; height: 50px; }
.btc-stats-mini { margin-top: 14px; display: flex; flex-direction: column; gap: 8px; border-top: 1px solid var(--border); padding-top: 14px; }
.btc-stats-mini > div { display: flex; justify-content: space-between; font-size: 12.5px; }
.btc-stats-mini > div > span:first-child { color: var(--text3); }
.btc-stats-mini > div > span:last-child, .btc-stats-mini > div > strong { font-weight: 600; }

/* Learn page */
.learn-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 40px; }

.learn-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all 0.25s;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.learn-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--border2); }

.learn-card-icon { font-size: 36px; }
.learn-card-level { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; padding: 3px 10px; border-radius: 20px; width: fit-content; }
.level-beginner { background: rgba(16,185,129,.15); color: var(--green); }
.level-intermediate { background: rgba(59,130,246,.15); color: var(--accent); }
.level-advanced { background: rgba(239,68,68,.15); color: var(--red); }
.learn-card h3 { font-size: 16px; font-weight: 700; line-height: 1.4; color: var(--text); }
.learn-card p { font-size: 13px; color: var(--text2); line-height: 1.6; }
.learn-card-meta { font-size: 12px; color: var(--text3); margin-top: auto; }

@media (max-width: 1024px) {
  .category-hero { grid-template-columns: 1fr; }
  .cat-hero-right { display: none; }
  .cat-news-grid { grid-template-columns: 1fr; }
  .cat-sidebar { display: grid; grid-template-columns: repeat(2, 1fr); }
  .learn-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .cat-title { font-size: 28px; }
  .cat-sidebar { grid-template-columns: 1fr; }
  .learn-grid { grid-template-columns: 1fr; }
}