:root {
  --bg: #fafafa;
  --surface: #ffffff;
  --surface-muted: #f5f5f5;
  --surface-raised: #eeeeee;
  --text-primary: #111111;
  --text-secondary: #444444;
  --text-tertiary: #666666;
  --text-quaternary: #999999;
  --border: #e0e0e0;
  --danger: #dc2626;
  --positive: #16a34a;
  --warning: #ca8a04;
  --accent: #2563eb;
  --chart-1: #2563eb;
  --chart-2: #dc2626;
  --chart-3: #16a34a;
  --chart-4: #7c3aed;
  --chart-5: #6b7280;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "JetBrains Mono", Consolas, monospace;
}

[data-theme="dark"] {
  --bg: #0a0a0a;
  --surface: #141414;
  --surface-muted: #1a1a1a;
  --surface-raised: #222222;
  --text-primary: #f0f0f0;
  --text-secondary: #b0b0b0;
  --text-tertiary: #888888;
  --text-quaternary: #555555;
  --border: #2a2a2a;
  --danger: #ef4444;
  --positive: #22c55e;
  --warning: #eab308;
  --accent: #3b82f6;
  --chart-1: #3b82f6;
  --chart-2: #ef4444;
  --chart-3: #22c55e;
  --chart-4: #a78bfa;
  --chart-5: #9ca3af;
  --shadow: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.5);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

#app { max-width: 1200px; margin: 0 auto; padding: 16px; }

/* Header */
.app-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 0 20px; border-bottom: 1px solid var(--border); margin-bottom: 20px;
}
.header-brand { display: flex; align-items: center; gap: 10px; }
.brand-icon { color: var(--text-primary); }
.header-brand h1 { font-size: 20px; font-weight: 500; letter-spacing: -0.3px; }
.header-brand h1 span { color: var(--text-quaternary); font-weight: 400; }
.header-actions { display: flex; gap: 6px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px; border-radius: var(--radius-md);
  border: 1px solid var(--border); background: var(--surface);
  color: var(--text-primary); font-size: 14px; cursor: pointer;
  transition: all 0.15s ease; font-weight: 400;
}
.btn:hover { background: var(--surface-muted); }
.btn-primary {
  background: var(--text-primary); color: var(--bg); border-color: var(--text-primary);
}
.btn-primary:hover { opacity: 0.85; background: var(--text-primary); }
.btn-danger { color: var(--danger); border-color: var(--danger); }
.btn-danger:hover { background: rgba(220,38,38,0.08); }
.btn-icon {
  width: 36px; height: 36px; display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm); border: 1px solid var(--border); background: var(--surface);
  color: var(--text-secondary); cursor: pointer; transition: all 0.15s ease;
}
.btn-icon:hover { background: var(--surface-muted); color: var(--text-primary); }

/* KPIs */
.kpi-section {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 24px;
}
.kpi-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: 18px 16px; box-shadow: var(--shadow);
}
.kpi-label { font-size: 12px; color: var(--text-tertiary); text-transform: lowercase; margin-bottom: 4px; }
.kpi-value { font-size: 28px; font-weight: 500; font-variant-numeric: tabular-nums; line-height: 1.1; }
.kpi-sub { font-size: 12px; color: var(--text-quaternary); margin-top: 6px; }

/* Tabs */
.tab-nav {
  display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 20px;
  overflow-x: auto; scrollbar-width: none;
}
.tab-nav::-webkit-scrollbar { display: none; }
.tab-btn {
  padding: 10px 18px; cursor: pointer; font-size: 14px;
  color: var(--text-tertiary); border-bottom: 2px solid transparent;
  transition: all 0.15s ease; background: none; border: none;
  border-bottom: 2px solid transparent; white-space: nowrap;
  display: inline-flex; align-items: center; gap: 6px;
}
.tab-btn:hover { color: var(--text-secondary); }
.tab-btn.active { color: var(--text-primary); border-bottom-color: var(--text-primary); font-weight: 500; }

/* Panels */
.tab-panel { display: none; animation: fadeIn 0.2s ease; }
.tab-panel.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }

.panel-header {
  display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px;
}
.panel-header h2 { font-size: 17px; font-weight: 500; }

/* Tables */
.table-wrap { border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; background: var(--surface); }
.data-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.data-table th {
  text-align: left; padding: 10px 12px; font-weight: 500; font-size: 12px;
  color: var(--text-tertiary); text-transform: lowercase;
  border-bottom: 1px solid var(--border); background: var(--surface-muted);
}
.data-table td { padding: 10px 12px; border-bottom: 1px solid var(--border); color: var(--text-secondary); }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--surface-muted); }
.data-table .num { text-align: right; font-variant-numeric: tabular-nums; }
.data-table .actions { width: 80px; text-align: right; }
.data-table .actions .btn-icon { opacity: 0; transition: opacity 0.15s ease; }
.data-table tr:hover .actions .btn-icon { opacity: 1; }

/* Tags */
.tag { display: inline-block; padding: 2px 8px; border-radius: var(--radius-sm); font-size: 12px; font-weight: 500; }
.tag-ativo { background: rgba(22,163,74,0.12); color: var(--positive); }
.tag-pausado { background: rgba(202,138,4,0.12); color: var(--warning); }
.tag-concluido { background: rgba(107,114,128,0.12); color: var(--chart-5); }

/* Empty state */
.empty-state {
  text-align: center; padding: 48px 24px; color: var(--text-quaternary);
}
.empty-state svg { margin-bottom: 12px; color: var(--text-quaternary); }
.empty-state p { margin-bottom: 16px; font-size: 14px; }

/* Charts */
.charts-grid { display: grid; grid-template-columns: 1fr 2fr; gap: 16px; margin-bottom: 16px; }
.chart-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: 20px; box-shadow: var(--shadow);
}
.chart-card.wide { grid-column: span 1; }
.chart-card h3 { font-size: 14px; font-weight: 500; color: var(--text-secondary); margin-bottom: 16px; }

.donut-wrap { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.donut-legend { display: flex; flex-direction: column; gap: 8px; }
.legend-item { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-secondary); }
.legend-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }

.bar-row { display: flex; align-items: center; margin-bottom: 10px; gap: 12px; }
.bar-label { width: 140px; font-size: 12px; color: var(--text-tertiary); flex-shrink: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar-track { flex: 1; height: 22px; background: var(--surface-muted); border-radius: 4px; overflow: hidden; }
.bar-fill { height: 100%; border-radius: 4px; transition: width 0.5s ease; }
.bar-val { width: 80px; text-align: right; font-size: 12px; font-variant-numeric: tabular-nums; color: var(--text-secondary); flex-shrink: 0; }

/* Toolbar */
.toolbar { display: flex; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }

/* Report */
.report-box {
  background: var(--surface-muted); border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: 16px; font-family: var(--font-mono); font-size: 12px; white-space: pre-wrap;
  max-height: 320px; overflow: auto; color: var(--text-secondary); line-height: 1.6;
}

/* Modal */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.45);
  display: flex; align-items: center; justify-content: center; z-index: 100;
  padding: 16px; backdrop-filter: blur(2px);
}
.modal {
  background: var(--surface); border-radius: var(--radius-lg);
  width: 100%; max-width: 480px; max-height: 90vh; overflow: auto;
  padding: 24px; box-shadow: var(--shadow-lg); animation: modalIn 0.2s ease;
}
@keyframes modalIn { from { opacity: 0; transform: scale(0.96); } to { opacity: 1; transform: scale(1); } }
.modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.modal-header h3 { font-size: 17px; font-weight: 500; }
.form-row { margin-bottom: 14px; }
.form-row label { display: block; font-size: 12px; color: var(--text-tertiary); margin-bottom: 4px; text-transform: lowercase; }
.form-row input, .form-row select {
  width: 100%; padding: 9px 12px; border-radius: var(--radius-md);
  border: 1px solid var(--border); background: var(--surface); color: var(--text-primary);
  font-size: 14px; transition: border-color 0.15s ease;
}
.form-row input:focus, .form-row select:focus { outline: none; border-color: var(--text-primary); }
.form-row.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 20px; }

/* Toast */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--text-primary); color: var(--bg); padding: 10px 20px;
  border-radius: var(--radius-lg); font-size: 14px; z-index: 200;
  box-shadow: var(--shadow-lg); animation: toastIn 0.3s ease;
}
@keyframes toastIn { from { opacity: 0; transform: translateX(-50%) translateY(10px); } to { opacity: 1; transform: translateX(-50%) translateY(0); } }

/* Utilities */
.hidden { display: none !important; }

/* Responsive */
@media (max-width: 768px) {
  .kpi-section { grid-template-columns: repeat(2, 1fr); }
  .charts-grid { grid-template-columns: 1fr; }
  .chart-card.wide { grid-column: span 1; }
  .bar-label { width: 100px; }
  .data-table th:nth-child(3), .data-table td:nth-child(3) { display: none; }
}
@media (max-width: 480px) {
  .kpi-section { grid-template-columns: 1fr; }
  .data-table th:nth-child(5), .data-table td:nth-child(5) { display: none; }
  .panel-header { flex-direction: column; align-items: flex-start; gap: 10px; }
  .form-row.grid-2 { grid-template-columns: 1fr; }
}