:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: #161f30;
  --bg-card-hover: #1c273c;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(59, 130, 246, 0.3);
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.12);
  --danger-border: rgba(239, 68, 68, 0.3);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.12);
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.12);
  --primary: #3b82f6;
  --primary-glow: rgba(59, 130, 246, 0.2);
  --cyan: #06b6d4;
  --purple: #8b5cf6;
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 15px 30px -5px rgba(0, 0, 0, 0.5);
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  padding-bottom: 80px;
}

/* Container */
.container {
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
header {
  background: linear-gradient(180deg, rgba(17, 24, 39, 0.95) 0%, rgba(10, 14, 23, 0.8) 100%);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 16px 0;
}

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

.logo-area {
  display: flex;
  align-items: center;
  gap: 14px;
}

.badge-audit {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid var(--danger-border);
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.logo-title h1 {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(90deg, #ffffff, #93c5fd);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-title p {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.header-actions {
  display: flex;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #1d4ed8, #1e40af);
  transform: translateY(-1px);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Nav Tabs */
.nav-tabs {
  display: flex;
  gap: 8px;
  margin-top: 24px;
  margin-bottom: 28px;
  overflow-x: auto;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border-color);
}

.nav-tab {
  padding: 10px 18px;
  background: transparent;
  color: var(--text-secondary);
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
  white-space: nowrap;
}

.nav-tab:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav-tab.active {
  color: #ffffff;
  background: var(--primary);
  box-shadow: 0 4px 14px var(--primary-glow);
}

/* Alert Banner */
.alert-banner {
  background: linear-gradient(90deg, rgba(239, 68, 68, 0.18) 0%, rgba(220, 38, 38, 0.08) 100%);
  border: 1px solid var(--danger-border);
  border-left: 5px solid var(--danger);
  border-radius: var(--radius-md);
  padding: 18px 24px;
  margin-bottom: 30px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.alert-icon {
  font-size: 1.6rem;
  color: var(--danger);
  margin-top: 2px;
}

.alert-text h3 {
  font-size: 1.05rem;
  color: #fca5a5;
  font-weight: 700;
  margin-bottom: 4px;
}

.alert-text p {
  font-size: 0.88rem;
  color: #fecaca;
  line-height: 1.5;
}

/* KPI Cards */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 34px;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.kpi-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-accent);
  box-shadow: var(--shadow-lg);
}

.kpi-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--cyan));
}

.kpi-card.danger::before {
  background: linear-gradient(90deg, var(--danger), #f97316);
}

.kpi-card.warning::before {
  background: linear-gradient(90deg, var(--warning), #fbbf24);
}

.kpi-card.success::before {
  background: linear-gradient(90deg, var(--success), #34d399);
}

.kpi-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.kpi-value {
  font-size: 1.85rem;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -0.5px;
  margin-bottom: 6px;
  font-feature-settings: "tnum";
}

.kpi-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.badge-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.72rem;
  font-weight: 700;
}

.badge-danger {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid var(--danger-border);
}

.badge-success {
  background: var(--success-bg);
  color: var(--success);
}

.badge-warning {
  background: var(--warning-bg);
  color: var(--warning);
}

/* Charts Grid */
.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(460px, 1fr));
  gap: 24px;
  margin-bottom: 34px;
}

.chart-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.chart-header h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 10px;
}

.chart-header p {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.chart-container {
  position: relative;
  height: 310px;
  width: 100%;
}

/* Section Title & Controls */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
  flex-wrap: wrap;
  gap: 14px;
}

.section-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 10px;
}

.search-box {
  position: relative;
  min-width: 280px;
}

.search-input {
  width: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 9px 14px 9px 36px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  outline: none;
  transition: var(--transition);
}

.search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Table Card */
.table-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin-bottom: 34px;
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

thead {
  background: rgba(17, 24, 39, 0.8);
  border-bottom: 1px solid var(--border-color);
}

th {
  padding: 14px 18px;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.6px;
}

td {
  padding: 14px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
  vertical-align: middle;
}

tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

/* Accordion / Desplegable */
.accordion-row {
  cursor: pointer;
  transition: background 0.15s ease;
}

.accordion-row:hover {
  background: rgba(59, 130, 246, 0.06) !important;
}

.accordion-row.open {
  background: rgba(59, 130, 246, 0.12) !important;
  border-left: 3px solid var(--primary);
}

.chevron {
  display: inline-block;
  transition: transform 0.25s ease;
  font-size: 0.75rem;
  margin-left: 8px;
  color: var(--primary);
}

.accordion-row.open .chevron {
  transform: rotate(180deg);
}

.accordion-content-row {
  display: none;
  background: #0d131f;
}

.accordion-content-row.open {
  display: table-row;
}

.accordion-inner-box {
  padding: 18px 24px;
  background: rgba(0, 0, 0, 0.25);
  border-radius: var(--radius-sm);
  margin: 10px 0;
}

.inner-table {
  width: 100%;
  margin-top: 10px;
  font-size: 0.82rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
}

.inner-table th {
  background: rgba(0, 0, 0, 0.4);
  padding: 10px 14px;
  color: #94a3b8;
}

.inner-table td {
  padding: 10px 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.inner-table tr:hover {
  background: rgba(255, 255, 255, 0.03);
}

/* Status Badges */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
}

.status-pill.matched {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.status-pill.unmatched {
  background: var(--danger-bg);
  color: #f87171;
  border: 1px solid var(--danger-border);
}

.status-pill.duplicate {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

/* Duplicates Highlight Cards */
.dupes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 20px;
  margin-bottom: 34px;
}

.dupe-card {
  background: var(--bg-card);
  border: 1px solid var(--danger-border);
  border-radius: var(--radius-md);
  padding: 20px;
  position: relative;
  box-shadow: 0 4px 16px rgba(239, 68, 68, 0.08);
}

.dupe-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding-bottom: 10px;
}

.dupe-title {
  font-size: 1rem;
  font-weight: 800;
  color: #ffffff;
}

.dupe-total {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--danger);
  font-feature-settings: "tnum";
}

.dupe-item {
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--radius-sm);
  padding: 12px;
  margin-top: 8px;
  border-left: 3px solid var(--warning);
}

.dupe-item-top {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.dupe-desc {
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* Footer */
footer {
  margin-top: 60px;
  border-top: 1px solid var(--border-color);
  padding: 24px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.82rem;
}

/* Utility classes */
.text-right { text-align: right; }
.text-center { text-align: center; }
.font-mono { font-family: ui-monospace, monospace; font-feature-settings: "tnum"; }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-success { color: var(--success); }
.font-bold { font-weight: 700; }
.hidden { display: none !important; }

/* Responsive adjustments */
@media (max-width: 768px) {
  .charts-grid {
    grid-template-columns: 1fr;
  }
  .dupes-grid {
    grid-template-columns: 1fr;
  }
  .header-content {
    flex-direction: column;
    align-items: flex-start;
  }
}