/* App del Instalador Eléctrico — Estilos Principales (Mobile-first, sin frameworks) */
:root {
  --color-primary: #0b4a8b;
  --color-primary-hover: #083768;
  --color-primary-light: #eef4fb;
  --color-secondary: #4a5568;
  --color-accent: #f59e0b;
  --color-success: #15803d;
  --color-success-bg: #dcfce7;
  --color-warning: #b45309;
  --color-warning-bg: #fef3c7;
  --color-danger: #b91c1c;
  --color-danger-bg: #fee2e2;
  --color-bg: #f3f5f8;
  --color-card-bg: #ffffff;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-border: #cbd5e1;
  --color-border-light: #e2e8f0;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

body {
  font-family: var(--font-family);
  font-size: 15px;
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Barra superior */
.navbar {
  background-color: var(--color-primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 1rem;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.1rem;
  color: #ffffff;
  text-decoration: none;
}

.navbar-brand svg, .navbar-brand img {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  list-style: none;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  padding: 0.4rem 0.65rem;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 500;
  transition: background-color 0.15s;
}

.nav-links a:hover, .nav-links a.active {
  background-color: rgba(255, 255, 255, 0.18);
  color: #ffffff;
}

/* Menú móvil */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: #ffffff;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.2rem 0.5rem;
}

/* Barra de sincronización y estado offline */
.sync-bar {
  background-color: #f8fafc;
  border-bottom: 1px solid var(--color-border);
  padding: 0.35rem 1rem;
  font-size: 0.82rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sync-status {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

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

.status-dot.offline {
  background-color: var(--color-danger);
}

.status-dot.syncing {
  background-color: var(--color-accent);
  animation: pulse 1s infinite;
}

@keyframes pulse {
  0% { opacity: 0.4; }
  50% { opacity: 1; }
  100% { opacity: 0.4; }
}

/* Contenedor principal */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem;
  flex: 1;
}

/* Tarjetas y paneles */
.card {
  background: var(--color-card-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

.card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease-in-out;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
}

.btn-secondary {
  background-color: #f1f5f9;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  background-color: #e2e8f0;
}

.btn-success {
  background-color: var(--color-success);
  color: #ffffff;
}

.btn-success:hover {
  background-color: #166534;
}

.btn-danger {
  background-color: var(--color-danger);
  color: #ffffff;
}

.btn-danger:hover {
  background-color: #991b1b;
}

.btn-sm {
  padding: 0.25rem 0.55rem;
  font-size: 0.8rem;
}

.btn-lg {
  padding: 0.75rem 1.25rem;
  font-size: 1rem;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

/* Badges de estado */
.badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  letter-spacing: 0.03em;
}

.badge-borrador {
  background-color: #f1f5f9;
  color: #475569;
  border: 1px solid #cbd5e1;
}

.badge-enviado {
  background-color: #e0f2fe;
  color: #0369a1;
  border: 1px solid #bae6fd;
}

.badge-aceptado, .badge-pagada, .badge-terminada {
  background-color: var(--color-success-bg);
  color: var(--color-success);
  border: 1px solid #86efac;
}

.badge-rechazado {
  background-color: var(--color-danger-bg);
  color: var(--color-danger);
  border: 1px solid #fca5a5;
}

.badge-emitida, .badge-en_curso {
  background-color: var(--color-warning-bg);
  color: var(--color-warning);
  border: 1px solid #fde68a;
}

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

.form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.form-control {
  width: 100%;
  padding: 0.45rem 0.65rem;
  font-family: inherit;
  font-size: 0.9rem;
  color: var(--color-text);
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color 0.15s;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary-light);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.75rem;
}

.checkbox-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
  width: 1.1rem;
  height: 1.1rem;
  accent-color: var(--color-primary);
  cursor: pointer;
}

/* Tablas */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  margin-bottom: 1rem;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.table th {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 700;
  text-align: left;
  padding: 0.6rem 0.75rem;
  border-bottom: 2px solid var(--color-border);
}

.table td {
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--color-border-light);
  vertical-align: middle;
}

.table tr:hover td {
  background-color: #f8fafc;
}

.table .num, .table .text-right {
  text-align: right;
  white-space: nowrap;
}

.table .text-center {
  text-align: center;
}

/* Alertas y avisos */
.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
  font-size: 0.88rem;
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
}

.alert-info {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border: 1px solid #bfdbfe;
}

.alert-warning {
  background-color: var(--color-warning-bg);
  color: var(--color-warning);
  border: 1px solid #fde68a;
}

.alert-danger {
  background-color: var(--color-danger-bg);
  color: var(--color-danger);
  border: 1px solid #fca5a5;
}

.alert-success {
  background-color: var(--color-success-bg);
  color: var(--color-success);
  border: 1px solid #86efac;
}

/* Pie en vivo del Editor de Presupuestos / Facturas */
.editor-footer {
  position: sticky;
  bottom: 0;
  background: #ffffff;
  border-top: 2px solid var(--color-primary);
  box-shadow: 0 -4px 10px rgba(0, 0, 0, 0.08);
  padding: 0.75rem 1rem;
  z-index: 50;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.totales-resumen {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 1.25rem;
}

.total-item {
  display: flex;
  flex-direction: column;
}

.total-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--color-text-muted);
  font-weight: 700;
}

.total-valor {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text);
}

.total-destacado .total-valor {
  font-size: 1.4rem;
  color: var(--color-primary);
}

.margen-badge {
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.15rem 0.4rem;
  border-radius: var(--radius-sm);
  background-color: #f1f5f9;
}

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

.margen-badge.negativo {
  color: var(--color-danger);
  background-color: var(--color-danger-bg);
}

.autosave-indicator {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

/* Pad de firma digital */
.signature-pad-container {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  background-color: #ffffff;
  position: relative;
  touch-action: none;
  margin-bottom: 0.5rem;
}

.signature-pad-container canvas {
  width: 100%;
  height: 180px;
  display: block;
  cursor: crosshair;
}

/* Modales */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
}

.modal-overlay.active {
  display: flex;
}

.modal-content {
  background: #ffffff;
  border-radius: var(--radius-md);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  padding: 1.5rem;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.modal-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary);
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text-muted);
}

/* Tarjetas métricas del panel */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.metric-card {
  background: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  padding: 1rem;
  box-shadow: var(--shadow-sm);
}

.metric-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
}

.metric-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-top: 0.25rem;
}

/* Autocomplete del catálogo */
.autocomplete-wrapper {
  position: relative;
}

.autocomplete-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-top: none;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  max-height: 240px;
  overflow-y: auto;
  z-index: 80;
  box-shadow: var(--shadow-md);
  display: none;
}

.autocomplete-item {
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  border-bottom: 1px solid var(--color-border-light);
}

.autocomplete-item:hover, .autocomplete-item.selected {
  background-color: var(--color-primary-light);
}

/* Adaptación responsive */
@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-primary);
    flex-direction: column;
    padding: 0.5rem 1rem;
    box-shadow: var(--shadow-md);
  }
  .nav-links.show {
    display: flex;
  }
  .editor-footer {
    flex-direction: column;
    align-items: stretch;
  }
  .totales-resumen {
    justify-content: space-between;
  }
}