:root {
  --bg-page: #0b0f19;
  --bg-card: #131b2e;
  --bg-card-hover: #1a243d;
  --border-color: #23304e;
  --border-subtle: #1c2742;
  
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --cyan-main: #06b6d4;
  --cyan-dim: rgba(6, 182, 212, 0.15);
  --amber-main: #f59e0b;
  --amber-dim: rgba(245, 158, 11, 0.15);
  --emerald-main: #10b981;
  --emerald-dim: rgba(16, 185, 129, 0.15);
  --rose-main: #f43f5e;
  --rose-dim: rgba(244, 63, 94, 0.15);
  --indigo-main: #6366f1;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

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

body {
  background-color: var(--bg-page);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px 48px;
}

/* Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 16px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 24px;
}

.badge-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--emerald-main);
  box-shadow: 0 0 8px var(--emerald-main);
}

.tag {
  background: #1e293b;
  color: #38bdf8;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid #334155;
}

.tag-dim {
  background: transparent;
  color: var(--text-dim);
  border-color: var(--border-subtle);
}

.app-header h1 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 4px;
}

.subtitle {
  color: var(--text-muted);
  font-size: 13px;
  max-width: 600px;
}

/* Horizon Selector */
.horizon-toggle {
  display: flex;
  background: #172138;
  padding: 3px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.horizon-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.horizon-btn:hover {
  color: #fff;
}

.horizon-btn.active {
  background: #2563eb;
  color: #fff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

/* KPI Cards */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 18px 20px;
  transition: border-color 0.15s ease;
}

.kpi-card:hover {
  border-color: #3b82f6;
}

.kpi-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.kpi-value {
  font-size: 26px;
  font-weight: 700;
  font-feature-settings: "tnum";
  letter-spacing: -0.02em;
  margin-bottom: 4px;
  color: #fff;
}

.kpi-sub {
  font-size: 13px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
}

.ret-pos {
  color: var(--emerald-main);
}

.ret-neg {
  color: var(--rose-main);
}

.card-official .kpi-value {
  color: var(--cyan-main);
}

.card-ex-vin .kpi-value {
  color: var(--amber-main);
}

.card-spread .kpi-value {
  color: #38bdf8;
}

.card-weight .kpi-value {
  color: #a78bfa;
}

/* Main Chart */
.chart-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 24px;
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.chart-title {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
}

.chart-sub {
  font-size: 12px;
  color: var(--text-dim);
}

.chart-legend {
  display: flex;
  gap: 16px;
  align-items: center;
  font-size: 12px;
  color: var(--text-muted);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.legend-color {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 3px;
}

.legend-official {
  background: var(--cyan-main);
}

.legend-ex-vin {
  background: var(--amber-main);
}

.legend-divergence {
  background: rgba(6, 182, 212, 0.25);
  border: 1px dashed var(--cyan-main);
}

.chart-container {
  position: relative;
  width: 100%;
  height: 420px;
  user-select: none;
}

#chart-svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.chart-tooltip {
  position: absolute;
  top: 10px;
  background: rgba(15, 23, 42, 0.94);
  backdrop-filter: blur(8px);
  border: 1px solid #334155;
  border-radius: 6px;
  padding: 10px 14px;
  pointer-events: none;
  font-size: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  z-index: 20;
  white-space: nowrap;
}

.tooltip-date {
  font-weight: 600;
  color: #e2e8f0;
  margin-bottom: 6px;
  border-bottom: 1px solid #293548;
  padding-bottom: 4px;
}

.tooltip-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  line-height: 1.6;
}

.tooltip-cyan { color: var(--cyan-main); }
.tooltip-amber { color: var(--amber-main); }
.tooltip-dim { color: var(--text-muted); }

/* Table Section */
.table-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 24px;
}

.section-title-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 16px;
}

.section-title-row h2 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
}

.caption {
  font-size: 12px;
  color: var(--text-dim);
}

.table-wrapper {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  text-align: left;
}

.data-table th {
  background: #101726;
  color: var(--text-muted);
  font-weight: 600;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-color);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.data-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-main);
  font-feature-settings: "tnum";
}

.data-table tr:hover td {
  background: var(--bg-card-hover);
}

.data-table .num {
  text-align: right;
  font-family: var(--font-mono);
}

.ticker-badge {
  font-weight: 700;
  font-family: var(--font-mono);
  background: #1e293b;
  padding: 2px 6px;
  border-radius: 4px;
  color: #38bdf8;
  border: 1px solid #334155;
}

.loading-cell {
  text-align: center;
  color: var(--text-dim);
  padding: 24px;
}

/* Methodology */
.methodology-section {
  background: #101728;
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 18px 20px;
  margin-bottom: 24px;
}

.methodology-section h3 {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #38bdf8;
  margin-bottom: 8px;
}

.methodology-section p {
  color: var(--text-muted);
  font-size: 13px;
  margin-bottom: 10px;
}

.formula-box {
  background: #090d16;
  border: 1px solid #1c2742;
  border-radius: 6px;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: #cbd5e1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-bottom: 10px;
}

.formula-sep {
  color: #475569;
}

.methodology-note {
  font-size: 12px;
  color: var(--text-dim);
}

/* Footer */
.app-footer {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--text-dim);
  font-size: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
}

/* Chart SVG styles */
.grid-line {
  stroke: #1e293b;
  stroke-width: 1;
}

.axis-line {
  stroke: #334155;
  stroke-width: 1;
}

.axis-text {
  fill: #64748b;
  font-size: 11px;
  font-family: var(--font-mono);
}

.series-line-official {
  fill: none;
  stroke: var(--cyan-main);
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.series-line-ex-vin {
  fill: none;
  stroke: var(--amber-main);
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.divergence-polygon {
  fill: rgba(6, 182, 212, 0.12);
}

.cursor-line {
  stroke: #64748b;
  stroke-width: 1;
  stroke-dasharray: 3 3;
}

.cursor-dot-official {
  fill: var(--cyan-main);
  stroke: #0b0f19;
  stroke-width: 2;
}

.cursor-dot-ex-vin {
  fill: var(--amber-main);
  stroke: #0b0f19;
  stroke-width: 2;
}