/* ── Reset ───────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif; font-size: 14px; line-height: 1.5; }

/* ── Theme variables (dark default) ─────────────────── */
:root {
  --bg:            #070b17;
  --bg-sidebar:    rgba(5, 10, 30, 0.85);
  --bg-card:       rgba(15, 23, 42, 0.70);
  --bg-card-hover: rgba(30, 41, 59, 0.70);
  --border:        rgba(226, 232, 240, 0.10);
  --border-accent: rgba(99, 102, 241, 0.35);
  --text:          #f0f6fc;
  --text-muted:    #94a3b8;
  --text-dim:      #4b5563;
  --accent:        #6366f1;
  --accent-soft:   rgba(99, 102, 241, 0.15);
  --success:       #10b981;
  --danger:        #ef4444;
  --warning:       #f59e0b;
  --chart-bg:      #070b17;
  --chart-grid:    rgba(226, 232, 240, 0.05);
  --chart-text:    #64748b;
  --shadow:        0 4px 24px rgba(0, 0, 0, 0.45);
}

[data-theme="light"] {
  --bg:            #f1f5f9;
  --bg-sidebar:    rgba(255, 255, 255, 0.92);
  --bg-card:       rgba(255, 255, 255, 0.88);
  --bg-card-hover: rgba(241, 245, 249, 0.88);
  --border:        rgba(15, 23, 42, 0.09);
  --border-accent: rgba(99, 102, 241, 0.30);
  --text:          #0f172a;
  --text-muted:    #475569;
  --text-dim:      #94a3b8;
  --chart-bg:      #ffffff;
  --chart-grid:    rgba(15, 23, 42, 0.05);
  --chart-text:    #64748b;
  --shadow:        0 4px 16px rgba(0, 0, 0, 0.10);
}

/* ── Utility colours ─────────────────────────────────── */
.up   { color: var(--success) !important; }
.down { color: var(--danger)  !important; }
.warn { color: var(--warning) !important; }

body {
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── Header ──────────────────────────────────────────── */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  height: 48px;
  background: var(--bg-sidebar);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(14px);
  position: sticky;
  top: 0;
  z-index: 200;
}
.header-left   { display: flex; align-items: center; gap: 10px; }
.header-logo   { font-size: 1.2rem; }
.header-title  { font-size: 1rem; font-weight: 700; letter-spacing: -0.01em; }
.header-asof   {
  font-size: 0.75rem; color: var(--text-muted);
  background: var(--accent-soft); padding: 2px 8px;
  border-radius: 999px; border: 1px solid var(--border-accent);
}
.theme-toggle {
  background: none; border: 1px solid var(--border); border-radius: 8px;
  padding: 5px 10px; cursor: pointer; color: var(--text-muted);
  font-size: 1rem; transition: background 0.15s, border-color 0.15s;
}
.theme-toggle:hover { background: var(--bg-card-hover); border-color: var(--border-accent); }

/* ── Layout ──────────────────────────────────────────── */
.layout {
  display: grid;
  grid-template-columns: 172px 1fr;
  height: calc(100vh - 48px);
}

/* ── Sidebar ─────────────────────────────────────────── */
.sidebar {
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  backdrop-filter: blur(14px);
  padding: 14px 0;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}
.sidebar-title {
  font-size: 0.68rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.10em; color: var(--text-dim);
  padding: 0 14px 8px;
}
.index-btn {
  display: flex; align-items: center; width: 100%;
  padding: 9px 14px; background: none; border: none;
  cursor: pointer; color: var(--text-muted); font-size: 0.85rem; font-weight: 500;
  text-align: left; border-left: 3px solid transparent;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
  gap: 4px;
}
.index-btn:hover { background: var(--bg-card-hover); color: var(--text); }
.index-btn.active { color: var(--accent); border-left-color: var(--accent); background: var(--accent-soft); }
.idx-chg { margin-left: auto; font-size: 0.74rem; font-weight: 700; flex-shrink: 0; }

/* ── Main ────────────────────────────────────────────── */
.main { display: flex; flex-direction: column; overflow: hidden; }

/* ── Tab bar ─────────────────────────────────────────── */
.tab-bar {
  display: flex; gap: 2px;
  padding: 10px 16px 0;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.tab-btn {
  padding: 7px 14px; background: none; border: none;
  border-bottom: 2px solid transparent; margin-bottom: -1px;
  cursor: pointer; color: var(--text-muted); font-size: 0.85rem; font-weight: 500;
  border-radius: 6px 6px 0 0; transition: color 0.12s, background 0.12s;
}
.tab-btn:hover  { color: var(--text); background: var(--bg-card-hover); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ── Tab panels ──────────────────────────────────────── */
.tab-panels { flex: 1; overflow-y: auto; }
.tab-panel  { display: none; padding: 16px; }
.tab-panel.active { display: block; }

/* ── Cards ───────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  backdrop-filter: blur(8px);
  overflow: hidden;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}
.card-header {
  padding: 10px 16px 8px;
  font-size: 0.72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.07em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}
.card-body { padding: 14px 16px; }

/* ── Stat row ────────────────────────────────────────── */
.stat-row { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 14px; }
.stat-card {
  flex: 1; min-width: 90px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 10px; padding: 10px 12px;
}
.stat-label { font-size: 0.68rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 3px; }
.stat-value { font-size: 1.05rem; font-weight: 700; color: var(--text); }
.stat-value.sm { font-size: 0.92rem; }

/* ── Chart containers ────────────────────────────────── */
.chart-wrap     { width: 100%; height: 280px; min-height: 180px; }
.chart-wrap.sm  { height: 90px;  min-height: 60px;  }
.chart-wrap.md  { height: 200px; min-height: 120px; }

/* ── A/D bar ─────────────────────────────────────────── */
.ad-bar-wrap   { margin: 4px 0 14px; }
.ad-bar-label  { display: flex; justify-content: space-between; font-size: 0.74rem; color: var(--text-muted); margin-bottom: 5px; }
.ad-bar-track  { height: 9px; background: var(--danger); border-radius: 999px; overflow: hidden; opacity: 0.85; }
.ad-bar-fill   { height: 100%; background: var(--success); border-radius: 999px; transition: width 0.5s ease; }

/* ── Breadth grid ────────────────────────────────────── */
.breadth-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(105px, 1fr)); gap: 10px; margin-bottom: 14px; }

/* ── Heatmap ─────────────────────────────────────────── */
.heatmap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(88px, 1fr));
  gap: 7px;
}
.heatmap-tile {
  padding: 9px 7px; border-radius: 9px; text-align: center;
  border: 1px solid transparent; cursor: default;
}
.heatmap-tile .tile-sym { font-size: 0.82rem; font-weight: 700; margin-bottom: 2px; }
.heatmap-tile .tile-pct { font-size: 0.78rem; font-weight: 600; }
.heatmap-tile .tile-vol { font-size: 0.65rem; opacity: 0.70; margin-top: 1px; }
.heatmap-tile.positive  { background: rgba(16,185,129,0.18); border-color: rgba(16,185,129,0.32); color: #6ee7b7; }
.heatmap-tile.negative  { background: rgba(239,68,68,0.18);  border-color: rgba(239,68,68,0.32);  color: #fca5a5; }
.heatmap-tile.neutral   { background: var(--bg-card); color: var(--text-muted); }
[data-theme="light"] .heatmap-tile.positive { color: #065f46; }
[data-theme="light"] .heatmap-tile.negative { color: #7f1d1d; }

/* ── Foreign flow table ──────────────────────────────── */
.flow-table { width: 100%; border-collapse: collapse; font-size: 0.84rem; }
.flow-table th {
  padding: 7px 10px; text-align: right;
  color: var(--text-muted); font-size: 0.68rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.06em;
  border-bottom: 1px solid var(--border);
}
.flow-table th:first-child { text-align: left; }
.flow-table td { padding: 6px 10px; text-align: right; border-bottom: 1px solid var(--border); }
.flow-table td:first-child { text-align: left; font-weight: 600; }
.flow-table tr:last-child td { border-bottom: none; }
.flow-table tr:hover td { background: var(--bg-card-hover); }

/* ── Empty / error state ─────────────────────────────── */
.empty-state {
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; min-height: 180px;
  color: var(--text-dim); font-size: 0.9rem; gap: 8px;
}

/* ── Responsive: mobile ──────────────────────────────── */
@media (max-width: 700px) {
  .layout { grid-template-columns: 1fr; grid-template-rows: auto 1fr; height: auto; }
  .sidebar {
    flex-direction: row; overflow-x: auto;
    border-right: none; border-bottom: 1px solid var(--border);
    padding: 8px; gap: 4px; height: auto;
  }
  .sidebar-title { display: none; }
  .index-btn {
    white-space: nowrap; border-left: none;
    border-bottom: 2px solid transparent;
    border-radius: 8px; padding: 6px 10px; flex-shrink: 0;
  }
  .index-btn.active { border-bottom-color: var(--accent); background: var(--accent-soft); }
  .tab-panels { height: auto; }
  .chart-wrap { height: 220px; }
  .breadth-grid { grid-template-columns: repeat(auto-fill, minmax(90px, 1fr)); }
}

/* ── AI Analysis panel ───────────────────────────────── */
.ai-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 14px;
}
.ai-title { font-size: 1rem; font-weight: 700; color: var(--text); }
.ai-badge {
  font-size: 0.72rem; font-weight: 600; padding: 3px 9px;
  background: var(--accent-soft); border: 1px solid var(--border-accent);
  border-radius: 999px; color: var(--accent);
}
.ai-content { line-height: 1.7; color: var(--text); }
.ai-content h1, .ai-content h2 { font-size: 0.92rem; font-weight: 700; margin: 10px 0 6px; color: var(--text); }
.ai-content h3 { font-size: 0.85rem; font-weight: 600; margin: 8px 0 4px; color: var(--text-muted); }
.ai-content p  { margin-bottom: 6px; font-size: 0.88rem; }
.ai-content ul { padding-left: 18px; margin-bottom: 8px; }
.ai-content li { font-size: 0.88rem; margin-bottom: 3px; }
.ai-content strong { color: var(--text); }
.ai-content code {
  font-family: 'SF Mono', Consolas, monospace; font-size: 0.82rem;
  background: var(--bg-card-hover); padding: 1px 5px; border-radius: 4px;
}