:root {
  --bg-body: #0f172a;
  --bg-card: #1e293b;
  --bg-card-hover: #263449;
  --bg-input: #0b1120;
  --border-color: #334155;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.14);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.14);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.14);
  --purple: #8b5cf6;
  --purple-bg: rgba(139, 92, 246, 0.14);
  --radius: 10px;
}

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

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.5;
  min-height: 100vh;
}

.topbar {
  background: #0b1120;
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  position: sticky;
  top: 0;
  z-index: 100;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-badge {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #fff;
  font-weight: 800;
  font-size: 1.1rem;
  padding: 0.4rem 0.7rem;
  border-radius: 8px;
  letter-spacing: 0.5px;
}

.brand-title h1 {
  font-size: 1.1rem;
  font-weight: 700;
}

.brand-title p {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: var(--success-bg);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
}

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

.nav-tabs {
  display: flex;
  gap: 0.4rem;
  background: #131c31;
  padding: 0.5rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  overflow-x: auto;
}

.nav-tab {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid transparent;
  padding: 0.55rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  white-space: nowrap;
  transition: all 0.15s;
}

.nav-tab:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.04);
}

.nav-tab.active {
  background: var(--primary);
  color: #fff;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.25rem;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

/* KPI Grid */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
}

.kpi-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.kpi-value {
  font-size: 1.75rem;
  font-weight: 800;
  margin-top: 0.25rem;
}

.kpi-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

/* Cards & Forms */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.card-title {
  font-size: 1.05rem;
  font-weight: 700;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.form-group {
  margin-bottom: 0.9rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: #cbd5e1;
}

.form-control {
  width: 100%;
  background: var(--bg-input);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.6rem 0.8rem;
  font-size: 0.95rem;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.25);
}

.scanner-input {
  font-size: 1.15rem;
  font-weight: 700;
  padding: 0.75rem 0.9rem;
  border-width: 2px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 0.55rem 1rem;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover:not(:disabled) {
  background: var(--primary-hover);
}

.btn-success {
  background: var(--success);
  color: #fff;
}
.btn-success:hover:not(:disabled) {
  filter: brightness(1.1);
}

.btn-warning {
  background: var(--warning);
  color: #0f172a;
}

.btn-danger {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border-color: rgba(239, 68, 68, 0.35);
}
.btn-danger:hover:not(:disabled) {
  background: var(--danger);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--text-main);
  border-color: var(--border-color);
}
.btn-outline:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.06);
}

.btn-sm {
  padding: 0.35rem 0.65rem;
  font-size: 0.8rem;
}

.btn-lg {
  padding: 0.75rem 1.4rem;
  font-size: 1rem;
}

/* Mode Selector Cards */
.mode-selector {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.mode-option {
  background: var(--bg-input);
  border: 2px solid var(--border-color);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  cursor: pointer;
  transition: all 0.15s;
}

.mode-option.active {
  border-color: var(--primary);
  background: rgba(59, 130, 246, 0.1);
}

.mode-option h4 {
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
}

.mode-option p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Badges */
.badge {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
}

.badge-exacto {
  background: var(--success-bg);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-pendiente {
  background: rgba(148, 163, 184, 0.15);
  color: #cbd5e1;
}

.badge-diferencia {
  background: var(--danger-bg);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-ubicacion {
  background: var(--warning-bg);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-sorpresa {
  background: var(--purple-bg);
  color: #c4b5fd;
  border: 1px solid rgba(139, 92, 246, 0.3);
}

/* Table */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.86rem;
}

th, td {
  padding: 0.65rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

th {
  background: #0b1120;
  color: #94a3b8;
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.4px;
}

tr:hover td {
  background: rgba(255, 255, 255, 0.03);
}

tr.clickable-row {
  cursor: pointer;
}

.progress-bar-wrap {
  width: 100%;
  background: #0b1120;
  height: 8px;
  border-radius: 999px;
  overflow: hidden;
  margin-top: 0.35rem;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #3b82f6, #10b981);
  transition: width 0.25s ease;
}

.scan-feedback {
  padding: 0.9rem 1rem;
  border-radius: 8px;
  margin-bottom: 1rem;
  display: none;
  font-weight: 600;
}

.product-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(59, 130, 246, 0.18);
  border: 1px solid rgba(59, 130, 246, 0.4);
  color: #93c5fd;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  font-size: 0.8rem;
}

.chip button {
  background: none;
  border: none;
  color: #fff;
  cursor: pointer;
  font-weight: bold;
}

@media (max-width: 640px) {
  .mode-selector {
    grid-template-columns: 1fr;
  }
  .container {
    padding: 0.75rem;
  }
}

@media print {
  .topbar, .nav-tabs, .no-print {
    display: none !important;
  }
  body, .card {
    background: #fff !important;
    color: #000 !important;
    border-color: #ccc !important;
  }
  th, td {
    color: #000 !important;
    border-color: #ccc !important;
  }
}