:root {
  --bg: #ffffff;       /* Fondo principal blanco */
  --panel: #f9fafb;    /* Paneles claros */
  --muted: #6b7280;    /* Texto secundario gris */
  --text: #111827;     /* Texto principal oscuro */
  --accent: #16a34a;   /* Verde acento */
  --warn: #d97706;     /* Amarillo acento */
  --danger: #dc2626;   /* Rojo error */
  --card: #f3f4f6;     /* Tarjetas claras */
  --input: #ffffff;    /* Inputs blancos */
}

/* --- RESETEO BÁSICO --- */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);   /* Fondo blanco */
  color: var(--text);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Helvetica Neue, Arial, Noto Sans;
}

/* --- CONTENEDORES --- */
.wrap {
  max-width: 1400px;
  margin: 24px auto;
  padding: 16px;
}

.grid {
  display: grid;
  gap: 16px;
  grid-template-columns: 1.2fr 1fr .8fr;
}
@media (max-width: 1200px) {
  .grid {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--card);
  border: 1px solid #e5e7eb;
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 4px 12px rgba(0,0,0,.05);
}

/* --- TEXTOS --- */
h1 {
  font-size: clamp(22px, 3vw, 32px);
  margin: 0 0 12px;
  color: var(--text);
}

.sub {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 20px;
}

.muted {
  color: var(--muted);
}

.small {
  font-size: 12px;
  color: var(--muted);
}

/* --- FILAS Y LISTAS --- */
.row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.list {
  display: grid;
  gap: 8px;
  max-height: 420px;
  overflow: auto;
  padding-right: 4px;
}

.item {
  display: grid;
  grid-template-columns: 1fr 120px;
  gap: 8px;
  align-items: center;
  background: #ffffff;
  border: 1px solid #e5e7eb;
  padding: 10px 12px;
  border-radius: 12px;
}
.item > div:nth-child(2) {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  flex-wrap: wrap;
}

.badge-container {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  flex-wrap: wrap;
}

.badge {
  font-size: 12px;
  padding: 4px 8px;
  border-radius: 999px;
  background: #f3f4f6;
  border: 1px solid #e5e7eb;
  text-align: center;
  color: var(--text);
}

.empty {
  border: 1px dashed #d1d5db;
  padding: 20px;
  border-radius: 12px;
  text-align: center;
  color: var(--muted);
}

/* --- FORMULARIOS Y BOTONES --- */
input,
select,
button {
  border-radius: 12px;
  border: 1px solid #d1d5db;
  background: var(--input);
  color: var(--text);
  padding: 12px 14px;
  font-size: 16px;
}

input,
select {
  flex: 1;
  min-width: 160px;
}

button {
  cursor: pointer;
  transition: .2s transform, .2s opacity;
}
button:hover {
  transform: translateY(-1px);
}
button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.primary {
  background: linear-gradient(90deg, #16a34a, #22c55e);
  border: none;
  color: black;
  font-weight: 700;
}

.ghost {
  background: transparent;
  border: 1px solid #d1d5db;
  color: var(--text);
}

.warn {
  background: linear-gradient(90deg, #fbbf24, #f59e0b);
  border: none;
  color: black;
  font-weight: 700;
}

/* --- KPIs --- */
.kpi {
  display: flex !important;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}
.kpi .box {
  background: var(--panel);
  border: 1px solid #e5e7eb;
  padding: 12px 14px;
  border-radius: 14px;
  min-width: 150px;
  box-shadow: 0 2px 6px rgba(0,0,0,.05);
}

/* --- DIVISORES Y INFO --- */
.divider {
  height: 1px;
  background: #e5e7eb;
  margin: 12px 0;
}

#discountInfo,
#taskGenInfo {
  margin-top: 8px;
  font-size: 12px;
  color: var(--muted);
}

/* --- NAVEGACIÓN ENTRE PANTALLAS --- */
.main-content > .ventana {
  display: none;
  margin-top: 20px;
}
.main-content > .ventana.visible {
  display: block;
}

nav {
  display: flex !important;
  gap: 10px;
  margin-bottom: 20px;
}
nav button {
  transition: all 0.2s ease;
  opacity: 0.7;
  padding: 10px 16px;
}
nav button:hover {
  opacity: 1 !important;
}
nav button.active {
  opacity: 1;
  font-weight: bold;
  background: linear-gradient(90deg, #1e40af, #3b82f6);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}
/* Estilos para botones de navegación activos */
nav button {
  transition: all 0.2s ease;
  opacity: 0.7;
  padding: 10px 16px;
}
nav button:hover {
  opacity: 1 !important;
}
nav button.active {
  opacity: 1;
  font-weight: bold;
  background: linear-gradient(90deg, #1e40af, #3b82f6);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

/* --- RESPONSIVE --- */
@media (max-width: 600px) {
  #filtroExcel {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    margin-left: 0;
  }
  #filtroExcel input,
  #filtroExcel button {
    width: 100%;
    box-sizing: border-box;
  }
  nav {
    flex-direction: column;
  }
}