:root {
  --bg-primary: #0f1117;
  --bg-card: #1a1d27;
  --bg-card-hover: #222633;
  --border: #2a2e3d;
  --text-primary: #e8eaed;
  --text-secondary: #b8bdd0;
  --text-muted: #7a82a0;
  --accent-blue: #4a9eff;
  --accent-green: #34d399;
  --accent-red: #f87171;
  --accent-amber: #fbbf24;
  --accent-purple: #a78bfa;
  --accent-cyan: #22d3ee;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
}

.header {
  padding: 24px 32px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header h1 {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.5px;
}

.header h1 span { color: var(--accent-blue); }

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

.header-meta {
  font-size: 13px;
  color: var(--text-muted);
}

.header-user {
  font-size: 13px;
  color: var(--text-secondary);
}

.header-btn {
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: none;
  color: var(--text-secondary);
  font-size: 12px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
}
.header-btn:hover { border-color: var(--accent-blue); color: var(--text-primary); }

.nav {
  display: flex;
  gap: 4px;
  padding: 12px 32px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
}

.nav-tab {
  padding: 8px 18px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  border: none;
  background: none;
  transition: all 0.2s;
}

.nav-tab:hover { color: var(--text-primary); background: var(--bg-card-hover); }
.nav-tab.active { color: var(--accent-blue); background: rgba(74,158,255,0.1); }

.content {
  padding: 24px 32px;
  max-width: 1400px;
  margin: 0 auto;
}

.section { display: none; }
.section.active { display: block; }

.section-title {
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* KPI Cards */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  transition: border-color 0.2s;
}

.kpi-card:hover { border-color: var(--accent-blue); }

.kpi-label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.kpi-value {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: 6px;
}

.kpi-change {
  font-size: 12px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 4px;
}

.kpi-change.up { color: var(--accent-green); }
.kpi-change.down { color: var(--accent-red); }
.kpi-change.flat { color: var(--text-muted); }

/* Charts */
.chart-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}

.chart-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.chart-card h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.chart-container {
  position: relative;
  height: 280px;
}

.chart-card-full {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 28px;
}

.chart-card-full h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
}

.chart-container-wide {
  position: relative;
  height: 350px;
  width: 100%;
}

.chart-container-wide canvas,
.chart-container canvas {
  width: 100% !important;
  height: 100% !important;
}

/* Controls */
.controls-row {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
  align-items: center;
}

.controls-row select {
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 13px;
  outline: none;
  cursor: pointer;
}

.controls-row select:focus { border-color: var(--accent-blue); }

.controls-row label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Table */
.table-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 28px;
  overflow-x: auto;
}

.table-card h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
}

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

th {
  text-align: left;
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

td {
  padding: 12px;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}

tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--bg-card-hover); }

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}

.badge-green { background: rgba(52,211,153,0.15); color: var(--accent-green); }
.badge-red { background: rgba(248,113,113,0.15); color: var(--accent-red); }
.badge-amber { background: rgba(251,191,36,0.15); color: var(--accent-amber); }
.badge-blue { background: rgba(74,158,255,0.15); color: var(--accent-blue); }

/* Placeholder */
.placeholder-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 400px;
  color: var(--text-muted);
}
.placeholder-section .icon { font-size: 48px; margin-bottom: 16px; }
.placeholder-section .title { font-size: 18px; font-weight: 600; margin-bottom: 8px; color: var(--text-secondary); }
.placeholder-section .desc { font-size: 13px; }

/* Loading */
.loading-overlay {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  color: var(--text-muted);
  font-size: 14px;
}

.refresh-btn {
  padding: 6px 14px;
  border: 1px solid var(--accent-blue);
  border-radius: 6px;
  background: none;
  color: var(--accent-blue);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
}
.refresh-btn:hover { background: rgba(74,158,255,0.1); }

/* Responsive */
@media (max-width: 768px) {
  .header, .content { padding: 16px; }
  .nav { padding: 8px 16px; overflow-x: auto; }
  .chart-grid { grid-template-columns: 1fr; }
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Region toggle buttons */
.region-toggle, .year-toggle {
  padding: 4px 12px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}
.region-toggle.active {
  background: rgba(74,158,255,0.15);
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}
.region-toggle:hover, .year-toggle:hover {
  border-color: var(--accent-blue);
  color: var(--text-primary);
}
.year-toggle.active {
  font-weight: 700;
}

/* Sticky table headers */
table thead th {
  position: sticky;
  top: 0;
  background: var(--card-bg, #1e293b);
  z-index: 2;
  box-shadow: 0 1px 0 rgba(255,255,255,0.08);
}