/* ──────────────────────────────────────────────────────────────
   Gestión Empresarial — hoja de estilos principal
   Tema claro + oscuro mediante variables. Cambia con .tema-oscuro en <body>.
   ────────────────────────────────────────────────────────────── */

:root {
  --azul: #2563eb;
  --azul-oscuro: #1d4ed8;
  --azul-claro: #eff6ff;
  --degradado: linear-gradient(135deg, #2563eb 0%, #4f46e5 100%);
  --degradado-suave: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);

  --fondo: #f1f5f9;
  --blanco: #ffffff;
  --superficie: #ffffff;
  --texto: #0f172a;
  --texto-suave: #64748b;
  --borde: #e2e8f0;

  --verde: #16a34a;
  --verde-claro: #f0fdf4;
  --rojo: #dc2626;
  --rojo-claro: #fef2f2;
  --ambar: #d97706;
  --ambar-claro: #fffbeb;
  --gris-claro: #f8fafc;

  --sidebar-fondo: #0f172a;
  --sidebar-texto: #94a3b8;

  --sombra: 0 1px 3px rgba(15, 23, 42, .08), 0 1px 2px rgba(15, 23, 42, .04);
  --sombra-media: 0 4px 16px rgba(15, 23, 42, .10);
  --sombra-elevada: 0 12px 32px rgba(15, 23, 42, .14);
  --radio: 14px;
  --radio-chico: 9px;
}

/* ── Tema oscuro ─────────────────────────────────────────────── */
body.tema-oscuro {
  --fondo: #0b1120;
  --blanco: #1e293b;
  --superficie: #1e293b;
  --texto: #e2e8f0;
  --texto-suave: #94a3b8;
  --borde: #334155;
  --gris-claro: #172033;
  --azul-claro: #1e293b;
  --verde-claro: #14271c;
  --rojo-claro: #2a1717;
  --ambar-claro: #2a2113;
  --sidebar-fondo: #060b16;
  --sombra: 0 1px 3px rgba(0, 0, 0, .4);
  --sombra-media: 0 4px 16px rgba(0, 0, 0, .45);
  --sombra-elevada: 0 12px 32px rgba(0, 0, 0, .55);
}

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

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--fondo);
  color: var(--texto);
  font-size: 14px;
  transition: background .3s, color .3s;
}

.oculto { display: none !important; }

/* ── Login ─────────────────────────────────────────────────── */
#pantalla-login {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 55%, #4f46e5 100%);
  position: relative;
  overflow: hidden;
}
#pantalla-login::before,
#pantalla-login::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(8px);
  opacity: .25;
}
#pantalla-login::before { width: 420px; height: 420px; background: #6366f1; top: -120px; right: -80px; }
#pantalla-login::after { width: 360px; height: 360px; background: #38bdf8; bottom: -120px; left: -60px; }
.login-caja {
  position: relative;
  z-index: 1;
  background: rgba(255, 255, 255, .98);
  border-radius: 22px;
  padding: 44px 40px;
  width: 390px;
  max-width: calc(100vw - 32px);
  box-shadow: 0 30px 70px rgba(0, 0, 0, .4);
  text-align: center;
  animation: subir .4s ease-out;
}
.login-logo {
  font-size: 30px;
  width: 70px;
  height: 70px;
  line-height: 70px;
  margin: 0 auto 6px;
  background: var(--degradado);
  border-radius: 20px;
  box-shadow: 0 10px 24px rgba(37, 99, 235, .4);
}
.login-caja h1 { font-size: 22px; margin: 10px 0 4px; color: #0f172a; }
.login-sub { color: #64748b; margin-bottom: 24px; }
.login-caja form { text-align: left; }
.login-caja label { color: #0f172a; }
.login-error { color: var(--rojo); margin-top: 12px; text-align: center; font-weight: 600; }

/* ── Estructura general ────────────────────────────────────── */
#app { display: flex; min-height: 100vh; }

#sidebar {
  width: 232px;
  background: var(--sidebar-fondo);
  color: var(--sidebar-texto);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.marca {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 18px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.marca-icono {
  font-size: 18px;
  width: 36px;
  height: 36px;
  line-height: 36px;
  text-align: center;
  background: var(--degradado);
  border-radius: 11px;
  box-shadow: 0 6px 16px rgba(37, 99, 235, .35);
}
.marca-nombre {
  color: var(--blanco);
  color: #f8fafc;
  font-weight: 700;
  font-size: 15px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
#nav-principal { padding: 10px 10px 20px; flex: 1; }
#nav-principal a {
  display: flex;
  align-items: center;
  gap: 4px;
  position: relative;
  color: var(--sidebar-texto);
  text-decoration: none;
  padding: 9px 13px;
  border-radius: 9px;
  margin-bottom: 2px;
  font-weight: 500;
  transition: background .15s, color .15s, transform .12s;
}
#nav-principal a:hover { background: rgba(255, 255, 255, .07); color: #f8fafc; transform: translateX(3px); }
#nav-principal a.activo {
  background: var(--degradado);
  color: #fff;
  box-shadow: 0 6px 16px rgba(37, 99, 235, .4);
}
#nav-principal a.activo::before {
  content: '';
  position: absolute;
  left: -10px;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 60%;
  background: #fff;
  border-radius: 0 4px 4px 0;
}
.nav-seccion {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: #475569;
  padding: 15px 13px 6px;
  font-weight: 700;
}

#zona-principal { flex: 1; display: flex; flex-direction: column; min-width: 0; }

#topbar {
  background: var(--superficie);
  border-bottom: 1px solid var(--borde);
  padding: 0 24px;
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(8px);
}
#btn-menu { display: none; }
.topbar-derecha { display: flex; align-items: center; gap: 12px; margin-left: auto; }
#usuario-info { color: var(--texto-suave); }
#usuario-info b { color: var(--texto); }
.avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--degradado-suave);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  box-shadow: 0 4px 12px rgba(139, 92, 246, .35);
}

#contenido { padding: 26px; max-width: 1320px; width: 100%; margin: 0 auto; }

/* ── Cabeceras de página ───────────────────────────────────── */
.pagina-cabecera {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.pagina-cabecera h2 { font-size: 22px; letter-spacing: -.01em; }
.pagina-cabecera .acciones { display: flex; gap: 8px; flex-wrap: wrap; }
.subtitulo { color: var(--texto-suave); font-size: 13px; margin-top: 3px; }

/* ── Hero del panel ────────────────────────────────────────── */
.hero {
  background: var(--degradado);
  border-radius: var(--radio);
  padding: 24px 28px;
  color: #fff;
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  box-shadow: 0 14px 34px rgba(37, 99, 235, .3);
  position: relative;
  overflow: hidden;
  animation: subir .4s ease-out;
}
.hero::after {
  content: '';
  position: absolute;
  right: -40px;
  top: -40px;
  width: 220px;
  height: 220px;
  background: rgba(255, 255, 255, .1);
  border-radius: 50%;
}
.hero-saludo { font-size: 24px; font-weight: 700; margin-bottom: 4px; }
.hero-fecha { opacity: .9; font-size: 13.5px; text-transform: capitalize; }
.hero .acciones { position: relative; z-index: 1; display: flex; gap: 8px; flex-wrap: wrap; }

/* ── Botones ───────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid transparent;
  border-radius: var(--radio-chico);
  padding: 9px 15px;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  background: var(--superficie);
  color: var(--texto);
  text-decoration: none;
  transition: transform .12s, box-shadow .15s, filter .15s, background .15s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primario { background: var(--degradado); color: #fff; box-shadow: 0 6px 16px rgba(37, 99, 235, .32); }
.btn-primario:hover { box-shadow: 0 8px 22px rgba(37, 99, 235, .42); }
.btn-peligro { background: var(--rojo); color: #fff; }
.btn-suave { background: var(--gris-claro); border-color: var(--borde); color: var(--texto); }
.btn-suave:hover { background: var(--borde); }
.hero .btn-suave { background: rgba(255, 255, 255, .16); border-color: rgba(255, 255, 255, .25); color: #fff; }
.hero .btn-suave:hover { background: rgba(255, 255, 255, .26); }
.hero .btn-primario { background: #fff; color: var(--azul-oscuro); }
.btn-bloque { width: 100%; justify-content: center; margin-top: 8px; }
.btn-mini { padding: 4px 9px; font-size: 12px; border-radius: 7px; }
.btn-icono {
  background: none;
  border: none;
  font-size: 18px;
  cursor: pointer;
  color: var(--texto-suave);
  border-radius: 8px;
  padding: 4px 7px;
  transition: background .15s;
}
.btn-icono:hover { background: var(--gris-claro); }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }

/* ── Tarjetas ──────────────────────────────────────────────── */
.tarjeta {
  background: var(--superficie);
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  box-shadow: var(--sombra);
  padding: 20px;
  margin-bottom: 18px;
  animation: subir .35s ease-out both;
}
.tarjeta h3 { font-size: 15px; margin-bottom: 14px; }

.rejilla-kpis {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 16px;
  margin-bottom: 18px;
}
.kpi {
  background: var(--superficie);
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  box-shadow: var(--sombra);
  padding: 18px;
  position: relative;
  overflow: hidden;
  animation: subir .35s ease-out both;
  transition: transform .15s, box-shadow .15s;
}
.kpi:hover { transform: translateY(-3px); box-shadow: var(--sombra-media); }
.kpi::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: var(--azul);
}
.kpi.verde::before { background: var(--verde); }
.kpi.rojo::before { background: var(--rojo); }
.kpi.ambar::before { background: var(--ambar); }
.kpi-cabe { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.kpi-icono {
  width: 38px; height: 38px;
  border-radius: 11px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  background: var(--azul-claro);
}
.kpi.verde .kpi-icono { background: var(--verde-claro); }
.kpi.rojo .kpi-icono { background: var(--rojo-claro); }
.kpi.ambar .kpi-icono { background: var(--ambar-claro); }
.kpi .kpi-titulo { color: var(--texto-suave); font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
.kpi .kpi-valor { font-size: 23px; font-weight: 700; margin-top: 8px; letter-spacing: -.02em; }
.kpi .kpi-extra { font-size: 12px; color: var(--texto-suave); margin-top: 4px; }
.kpi.verde .kpi-valor { color: var(--verde); }
.kpi.rojo .kpi-valor { color: var(--rojo); }
.kpi.ambar .kpi-valor { color: var(--ambar); }

.rejilla-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 900px) { .rejilla-2 { grid-template-columns: 1fr; } }

/* ── Tablas ────────────────────────────────────────────────── */
.tabla-envoltorio { overflow-x: auto; border-radius: var(--radio-chico); }
table.tabla { width: 100%; border-collapse: collapse; }
.tabla th {
  text-align: left;
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--texto-suave);
  padding: 11px 12px;
  border-bottom: 2px solid var(--borde);
  white-space: nowrap;
  background: var(--gris-claro);
}
.tabla td { padding: 11px 12px; border-bottom: 1px solid var(--borde); vertical-align: middle; }
.tabla tbody tr { transition: background .12s; }
.tabla tbody tr:hover { background: var(--gris-claro); }
.tabla tr.clicable { cursor: pointer; }
.tabla .num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.tabla th.num { text-align: right; }
.tabla .sin-datos { text-align: center; color: var(--texto-suave); padding: 32px; }

/* ── Etiquetas de estado ───────────────────────────────────── */
.badge {
  display: inline-block;
  font-size: 11.5px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 99px;
  white-space: nowrap;
}
.badge.gris { background: var(--gris-claro); color: var(--texto-suave); border: 1px solid var(--borde); }
.badge.azul { background: var(--azul-claro); color: var(--azul-oscuro); }
.badge.verde { background: var(--verde-claro); color: var(--verde); }
.badge.rojo { background: var(--rojo-claro); color: var(--rojo); }
.badge.ambar { background: var(--ambar-claro); color: var(--ambar); }
body.tema-oscuro .badge.azul { color: #93c5fd; }

/* ── Formularios ───────────────────────────────────────────── */
label { display: block; font-weight: 600; font-size: 13px; margin-bottom: 12px; }
input, select, textarea {
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--borde);
  border-radius: var(--radio-chico);
  font-size: 14px;
  font-family: inherit;
  margin-top: 4px;
  background: var(--superficie);
  color: var(--texto);
  transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--azul);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, .15);
}
input[type="checkbox"] { width: auto; margin-right: 6px; }
.form-rejilla { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 0 16px; }
.form-rejilla .ancho-completo { grid-column: 1 / -1; }
.campo-busqueda { max-width: 320px; }

.barra-filtros {
  display: flex;
  gap: 10px;
  align-items: flex-end;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.barra-filtros label { margin-bottom: 0; font-size: 12px; }
.barra-filtros input, .barra-filtros select { margin-top: 2px; }

/* ── Modales ───────────────────────────────────────────────── */
.modal-fondo {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, .55);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 40px 16px;
  z-index: 100;
  overflow-y: auto;
  animation: aparecer .15s ease-out;
}
.modal {
  background: var(--superficie);
  border-radius: 18px;
  width: 640px;
  max-width: 100%;
  box-shadow: var(--sombra-elevada);
  animation: subir .2s ease-out;
}
.modal.modal-grande { width: 860px; }
.modal.modal-pequeno { width: 430px; }
.modal-cabecera {
  padding: 18px 22px;
  border-bottom: 1px solid var(--borde);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.modal-cabecera h3 { font-size: 16px; }
.modal-cuerpo { padding: 22px; }
.modal-pie {
  padding: 16px 22px;
  border-top: 1px solid var(--borde);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* ── Toasts ────────────────────────────────────────────────── */
#contenedor-toasts {
  position: fixed;
  bottom: 22px;
  right: 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 200;
}
.toast {
  background: var(--texto);
  color: var(--superficie);
  padding: 13px 18px;
  border-radius: 11px;
  box-shadow: var(--sombra-elevada);
  font-weight: 600;
  animation: toast-entrada .22s ease-out;
  max-width: 380px;
  border-left: 4px solid var(--azul);
}
.toast.error { background: var(--rojo); color: #fff; border-left-color: #7f1d1d; }
.toast.exito { background: var(--verde); color: #fff; border-left-color: #14532d; }
@keyframes toast-entrada { from { transform: translateX(30px); opacity: 0; } to { transform: none; opacity: 1; } }

/* ── Editor de documentos (líneas) ─────────────────────────── */
.tabla-lineas input, .tabla-lineas select { margin-top: 0; }
.tabla-lineas td { padding: 6px 6px; }
.tabla-lineas .col-cantidad { width: 84px; }
.tabla-lineas .col-precio { width: 110px; }
.tabla-lineas .col-dto { width: 74px; }
.tabla-lineas .col-iva { width: 86px; }
.tabla-lineas .col-importe { width: 110px; text-align: right; font-weight: 600; }
.tabla-lineas .col-borrar { width: 40px; }

.caja-totales {
  margin-left: auto;
  width: 320px;
  max-width: 100%;
  margin-top: 16px;
  background: var(--gris-claro);
  border-radius: var(--radio-chico);
  padding: 14px 18px;
}
.caja-totales .fila-total {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  border-bottom: 1px solid var(--borde);
}
.caja-totales .fila-total.grande {
  font-size: 18px;
  font-weight: 700;
  color: var(--azul-oscuro);
  border-bottom: none;
  padding-top: 10px;
}
body.tema-oscuro .caja-totales .fila-total.grande { color: #93c5fd; }

.aviso {
  background: var(--ambar-claro);
  border: 1px solid #fcd34d;
  color: #92400e;
  border-radius: var(--radio-chico);
  padding: 11px 15px;
  margin-bottom: 15px;
  font-size: 13px;
}
.aviso.info { background: var(--azul-claro); border-color: #bfdbfe; color: var(--azul-oscuro); }
body.tema-oscuro .aviso { color: #fcd34d; border-color: #78550f; }
body.tema-oscuro .aviso.info { color: #93c5fd; border-color: #1e40af; }

/* ── Pestañas ──────────────────────────────────────────────── */
.pestanas {
  display: flex;
  gap: 4px;
  border-bottom: 2px solid var(--borde);
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.pestanas button {
  background: none;
  border: none;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--texto-suave);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color .15s;
}
.pestanas button:hover { color: var(--texto); }
.pestanas button.activa { color: var(--azul); border-bottom-color: var(--azul); }

/* ── Gráficos ──────────────────────────────────────────────── */
.grafico-envoltorio { position: relative; height: 280px; }

/* ── Animaciones ───────────────────────────────────────────── */
@keyframes subir { from { transform: translateY(10px); opacity: 0; } to { transform: none; opacity: 1; } }
@keyframes aparecer { from { opacity: 0; } to { opacity: 1; } }
.rejilla-kpis .kpi:nth-child(2) { animation-delay: .05s; }
.rejilla-kpis .kpi:nth-child(3) { animation-delay: .1s; }
.rejilla-kpis .kpi:nth-child(4) { animation-delay: .15s; }

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 768px) {
  #sidebar {
    position: fixed;
    z-index: 90;
    transform: translateX(-100%);
    transition: transform .2s;
    box-shadow: var(--sombra-elevada);
  }
  #sidebar.abierto { transform: none; }
  #btn-menu { display: block; }
  #contenido { padding: 14px; }
  .hero-saludo { font-size: 20px; }
}
