/* FactSet-inspired dark theme */
:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: #1a2236;
  --bg-hover: #243049;
  --border: #2a3a5c;
  --text-primary: #e8edf5;
  --text-secondary: #8899b8;
  --text-muted: #5a6a8a;
  --accent-blue: #3b82f6;
  --accent-cyan: #06b6d4;
  --positive: #10b981;
  --negative: #ef4444;
  --warning: #f59e0b;
  --neutral: #8899b8;
  --font: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 13px;
  line-height: 1.4;
  overflow-x: hidden;
}

/* Top Navigation */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  padding: 0 20px;
  height: 48px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo {
  background: var(--accent-blue);
  color: white;
  font-weight: 700;
  font-size: 14px;
  padding: 4px 8px;
  border-radius: 4px;
  letter-spacing: 1px;
}

.logo-text {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.topbar-center {
  display: flex;
  gap: 2px;
}

.tab {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 12px 16px;
  cursor: pointer;
  font-size: 13px;
  font-family: var(--font);
  border-bottom: 2px solid transparent;
  transition: all 0.15s;
}

.tab:hover { color: var(--text-primary); background: var(--bg-hover); }
.tab.active { color: var(--accent-blue); border-bottom-color: var(--accent-blue); }

.topbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.search-box input {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 6px 12px;
  border-radius: 4px;
  font-size: 12px;
  width: 200px;
  font-family: var(--font);
  outline: none;
  transition: border-color 0.15s;
}

.search-box input:focus { border-color: var(--accent-blue); }
.search-box input::placeholder { color: var(--text-muted); }

.timestamp {
  color: var(--text-muted);
  font-size: 11px;
  font-family: var(--font-mono);
}

/* Dashboard Layout */
.dashboard {
  padding: 16px 20px;
  max-width: 1600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Summary Cards */
.summary-cards {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 16px;
}

.card.summary {
  padding: 14px 16px;
}

.card-label {
  color: var(--text-muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.card-value {
  font-size: 22px;
  font-weight: 700;
  font-family: var(--font-mono);
  margin-bottom: 4px;
}

.card-change {
  font-size: 11px;
  font-family: var(--font-mono);
}

.positive { color: var(--positive); }
.negative { color: var(--negative); }
.neutral { color: var(--text-muted); }

/* Charts Row */
.charts-row {
  display: flex;
  gap: 16px;
}

.chart-card { position: relative; overflow: hidden; }
.chart-card.wide { flex: 2; }
.chart-card.narrow { flex: 1; }
.chart-card.half { flex: 1; }
.chart-card canvas { width: 100% !important; display: block; }

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.card-header h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.chart-controls {
  display: flex;
  gap: 4px;
}

.ctrl-btn {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 4px 10px;
  border-radius: 3px;
  cursor: pointer;
  font-size: 11px;
  font-family: var(--font);
  transition: all 0.15s;
}

.ctrl-btn:hover { background: var(--bg-hover); color: var(--text-primary); }
.ctrl-btn.active { background: var(--accent-blue); color: white; border-color: var(--accent-blue); }

/* Custom Legend */
.custom-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  color: var(--text-secondary);
}

.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* Table */
.table-card { padding: 16px; }

.table-controls {
  display: flex;
  gap: 8px;
  align-items: center;
}

.table-controls select {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 5px 8px;
  border-radius: 3px;
  font-size: 12px;
  font-family: var(--font);
  outline: none;
  cursor: pointer;
}

.table-wrapper {
  overflow-x: auto;
  margin-top: 4px;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th {
  text-align: left;
  padding: 8px 12px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
}

th:hover { color: var(--text-secondary); }
th.num, td.num { text-align: right; }

.sort-arrow { font-size: 10px; opacity: 0.5; }
th.sorted-asc .sort-arrow::after { content: ' \25B2'; }
th.sorted-desc .sort-arrow::after { content: ' \25BC'; }

td {
  padding: 7px 12px;
  border-bottom: 1px solid rgba(42, 58, 92, 0.4);
  font-size: 12px;
  font-family: var(--font-mono);
  white-space: nowrap;
}

tr:hover td { background: var(--bg-hover); }

td.ticker {
  font-weight: 700;
  color: var(--accent-cyan);
}

td.name-cell {
  font-family: var(--font);
  color: var(--text-secondary);
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
}

td.sector-cell {
  font-family: var(--font);
}

.sector-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 3px;
  font-size: 10px;
  font-weight: 600;
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent-blue);
}

.sector-badge.tech { background: rgba(59, 130, 246, 0.15); color: #60a5fa; }
.sector-badge.health { background: rgba(16, 185, 129, 0.15); color: #34d399; }
.sector-badge.finance { background: rgba(245, 158, 11, 0.15); color: #fbbf24; }
.sector-badge.consumer { background: rgba(168, 85, 247, 0.15); color: #c084fc; }
.sector-badge.energy { background: rgba(239, 68, 68, 0.15); color: #f87171; }
.sector-badge.industrial { background: rgba(107, 114, 128, 0.15); color: #9ca3af; }

/* Risk Metrics Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.metric-item {
  background: var(--bg-card);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.metric-label {
  color: var(--text-muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.metric-value {
  font-size: 18px;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text-primary);
}

.metric-value.positive { color: var(--positive); }
.metric-value.negative { color: var(--negative); }

/* Mobile Menu Button (hidden on desktop) */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  margin-left: auto;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  -webkit-tap-highlight-color: transparent;
}

.hamburger-line {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.mobile-menu-btn.active .hamburger-line:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.mobile-menu-btn.active .hamburger-line:nth-child(2) {
  opacity: 0;
}
.mobile-menu-btn.active .hamburger-line:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Mobile overlay */
.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 90;
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
}
.mobile-overlay.active { display: block; }

/* Responsive */
@media (max-width: 1200px) {
  .summary-cards { grid-template-columns: repeat(3, 1fr); }
  .charts-row { flex-direction: column; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .summary-cards { grid-template-columns: repeat(2, 1fr); }
  .dashboard { padding: 10px; gap: 12px; }

  /* Topbar: fixed height, hamburger visible */
  .topbar {
    flex-wrap: nowrap;
    height: 48px;
    padding: 0 12px;
    gap: 0;
    position: sticky;
    top: 0;
    z-index: 100;
  }

  .topbar-left {
    flex: 1;
    min-width: 0;
  }

  .mobile-menu-btn { display: flex; }

  /* Tabs become a dropdown menu */
  .topbar-center {
    display: none;
    position: fixed;
    top: 48px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 8px 0;
    z-index: 99;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    max-height: calc(100dvh - 48px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .topbar-center.open {
    display: flex;
  }

  .topbar-center .tab {
    width: 100%;
    text-align: left;
    padding: 14px 20px;
    font-size: 15px;
    border-bottom: none;
    border-left: 3px solid transparent;
  }

  .topbar-center .tab:hover,
  .topbar-center .tab:active {
    background: var(--bg-hover);
  }

  .topbar-center .tab.active {
    border-left-color: var(--accent-blue);
    background: var(--bg-hover);
    border-bottom: none;
  }

  /* Hide search and timestamp on mobile */
  .topbar-right { display: none; }

  /* Table scroll hint */
  .table-wrapper { -webkit-overflow-scrolling: touch; }

  /* Cards spacing */
  .card { padding: 12px; }
  .card-value { font-size: 18px; }
  .card-label { font-size: 10px; }

  /* Blog grid single column */
  .blog-articles-grid { grid-template-columns: 1fr; gap: 12px; }

  .blog-article-card {
    flex-direction: column;
    padding: 16px;
    gap: 12px;
  }

  .blog-card-icon {
    width: 40px;
    height: 40px;
  }

  .blog-icon-img {
    width: 26px;
    height: 26px;
  }

  .blog-card-body h3 { font-size: 13px; }
  .blog-card-body p { font-size: 11px; }

  /* Chart controls wrap */
  .card-header { flex-direction: column; gap: 8px; align-items: flex-start; }
  .chart-controls { flex-wrap: wrap; }
}

@media (max-width: 480px) {
  .summary-cards { grid-template-columns: 1fr; }
  .metrics-grid { grid-template-columns: 1fr; }
  .logo-text { display: none; }
  .card-value { font-size: 16px; }
  .topbar-center .tab { padding: 12px 16px; font-size: 14px; }

  /* Ensure iframes are responsive */
  iframe { width: 100% !important; max-width: 100%; }
}

/* Bitcoin Tab Icon */
.tab-icon {
  width: 14px;
  height: 14px;
  vertical-align: middle;
  margin-right: 4px;
  filter: brightness(0.6);
  transition: filter 0.15s;
}

.btc-tab:hover .tab-icon,
.btc-tab.active .tab-icon {
  filter: brightness(1) sepia(1) saturate(5) hue-rotate(15deg);
}

/* Bitcoin Section Header */
.btc-section-header {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btc-header-icon {
  width: 32px;
  height: 32px;
  filter: sepia(1) saturate(5) hue-rotate(15deg) brightness(1.1);
}

.btc-section-header h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
}

/* Bitcoin Section */
.btc-accent {
  border-left: 3px solid #f7931a;
}

.btc-cards {
  grid-template-columns: repeat(6, 1fr);
}

.btc-onchain {
  grid-template-columns: repeat(2, 1fr);
}

/* Research Grid */
.research-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.research-category h4 {
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 2px solid #f7931a;
}

.research-link {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 8px 10px;
  border-radius: 4px;
  text-decoration: none;
  transition: background 0.15s;
  margin-bottom: 2px;
}

.research-link:hover {
  background: var(--bg-hover);
}

.link-name {
  color: var(--accent-cyan);
  font-size: 12px;
  font-weight: 600;
}

.link-desc {
  color: var(--text-muted);
  font-size: 11px;
  line-height: 1.3;
}

@media (max-width: 1200px) {
  .research-grid { grid-template-columns: repeat(2, 1fr); }
  .btc-cards { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  .research-grid { grid-template-columns: 1fr; }
  .btc-cards { grid-template-columns: repeat(2, 1fr); }
  .btc-onchain { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .btc-cards { grid-template-columns: 1fr; }
  .research-link { padding: 6px 8px; }
  .link-name { font-size: 11px; }
  .link-desc { font-size: 10px; }
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-secondary);
  padding: 20px;
  text-align: center;
  margin-top: 16px;
}

.footer-inner {
  max-width: 1600px;
  margin: 0 auto;
}

.site-footer p {
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.5;
}

.footer-sub {
  margin-top: 4px;
  font-size: 11px !important;
  color: var(--text-muted);
  opacity: 0.7;
}

/* Blog Tab */
.blog-tab:hover .tab-icon,
.blog-tab.active .tab-icon {
  filter: brightness(1) sepia(1) saturate(5) hue-rotate(15deg);
}

/* Blog Section */
.blog-section-header {
  display: flex;
  align-items: center;
  gap: 10px;
}

.blog-section-header h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
}

.blog-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-left: 8px;
}

.blog-subtitle a {
  color: #f7931a;
  text-decoration: none;
}

.blog-subtitle a:hover {
  text-decoration: underline;
}

.blog-intro {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
  max-width: 700px;
}

.blog-articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.blog-article-card {
  display: flex;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 20px;
  text-decoration: none;
  transition: border-color 0.15s, background 0.15s;
}

.blog-article-card:hover {
  border-color: #f7931a;
  background: var(--bg-hover);
}

.blog-card-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(247, 147, 26, 0.1);
  border-radius: 8px;
}
.blog-icon-img {
  width: 32px;
  height: 32px;
  border-radius: 50%;
}

.blog-card-body {
  flex: 1;
  min-width: 0;
}

.blog-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 3px;
  font-size: 10px;
  font-weight: 600;
  background: rgba(247, 147, 26, 0.15);
  color: #f7931a;
  margin-bottom: 6px;
}

.blog-card-body h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
  line-height: 1.4;
}

.blog-card-body p {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 8px;
}

.blog-meta {
  display: flex;
  gap: 16px;
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.blog-cta {
  text-align: center;
  padding: 12px 0;
}

.blog-cta-btn {
  display: inline-block;
  background: #f7931a;
  color: #fff;
  padding: 10px 28px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.15s;
}

.blog-cta-btn:hover {
  background: #e8850f;
}

@media (max-width: 1200px) {
  .blog-articles-grid { grid-template-columns: 1fr; }
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }