/* =====================================================================
   CUENTA DE COBRO FÁCIL — Hoja de estilos principal
   Diseño profesional · Colombia
   ===================================================================== */

:root {
  --azul-900: #0E3A5C;
  --azul-700: #14507C;
  --azul-600: #1F6FB2;
  --azul-500: #2E86C9;
  --azul-100: #EAF3FA;
  --azul-50:  #F4F9FD;

  --verde:   #16A085;
  --verde-d: #0E7D67;
  --ambar:   #E0A516;
  --rojo:    #D8504D;
  --rojo-d:  #B23E3B;

  --tinta:   #1B2A38;
  --gris-700:#33475B;
  --gris-500:#5A6B7B;
  --gris-300:#A9B7C4;
  --gris-100:#E3EAF0;
  --gris-50: #F5F8FA;
  --blanco:  #FFFFFF;

  --sombra-sm: 0 1px 3px rgba(14,58,92,.08);
  --sombra:    0 4px 18px rgba(14,58,92,.10);
  --sombra-lg: 0 12px 40px rgba(14,58,92,.16);

  --radio:   12px;
  --radio-sm:8px;
  --trans:   .2s cubic-bezier(.4,0,.2,1);

  --fuente: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

body {
  font-family: var(--fuente);
  background: var(--gris-50);
  color: var(--tinta);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--azul-600); text-decoration: none; }
a:hover { color: var(--azul-700); }

/* ---------- Login ---------- */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(circle at 15% 15%, rgba(46,134,201,.18), transparent 45%),
    radial-gradient(circle at 85% 85%, rgba(14,58,92,.25), transparent 45%),
    linear-gradient(135deg, #0E3A5C 0%, #14507C 100%);
  padding: 24px;
}
.login-card {
  background: var(--blanco);
  border-radius: 18px;
  box-shadow: var(--sombra-lg);
  width: 100%;
  max-width: 420px;
  overflow: hidden;
}
.login-head {
  background: linear-gradient(135deg, var(--azul-900), var(--azul-700));
  padding: 38px 38px 30px;
  text-align: center;
  color: #fff;
}
.login-head .logo-circ {
  width: 64px; height: 64px;
  background: rgba(255,255,255,.14);
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 16px;
  font-size: 30px;
}
.login-head h1 { font-size: 21px; font-weight: 800; letter-spacing: -.3px; }
.login-head p { color: #9ec7e3; font-size: 13px; margin-top: 6px; }
.login-body { padding: 34px 38px 40px; }

/* ---------- Formularios ---------- */
.campo { margin-bottom: 18px; }
.campo label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--gris-700);
  margin-bottom: 7px;
}
.campo input, .campo select, .campo textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--gris-100);
  border-radius: var(--radio-sm);
  font-family: inherit;
  font-size: 14.5px;
  color: var(--tinta);
  background: var(--blanco);
  transition: var(--trans);
}
.campo input:focus, .campo select:focus, .campo textarea:focus {
  outline: none;
  border-color: var(--azul-500);
  box-shadow: 0 0 0 3px rgba(46,134,201,.14);
}
.campo textarea { resize: vertical; min-height: 90px; }
.campo .ayuda { font-size: 12px; color: var(--gris-500); margin-top: 5px; }
.fila { display: flex; gap: 16px; flex-wrap: wrap; }
.fila > .campo { flex: 1; min-width: 180px; }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border: none;
  border-radius: var(--radio-sm);
  font-family: inherit;
  font-size: 14.5px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--trans);
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary { background: var(--azul-600); color: #fff; }
.btn-primary:hover { background: var(--azul-700); color:#fff; transform: translateY(-1px); box-shadow: var(--sombra); }
.btn-success { background: var(--verde); color:#fff; }
.btn-success:hover { background: var(--verde-d); color:#fff; }
.btn-danger { background: var(--rojo); color:#fff; }
.btn-danger:hover { background: var(--rojo-d); color:#fff; }
.btn-ghost { background: var(--gris-50); color: var(--gris-700); border:1.5px solid var(--gris-100); }
.btn-ghost:hover { background: var(--gris-100); color: var(--gris-700); }
.btn-block { width: 100%; justify-content: center; }
.btn-sm { padding: 7px 13px; font-size: 13px; }
.btn:disabled { opacity:.6; cursor:not-allowed; }

/* ---------- Layout app ---------- */
.app { display: flex; min-height: 100vh; }
.sidebar {
  width: 256px;
  background: linear-gradient(180deg, var(--azul-900) 0%, #0a2e49 100%);
  color: #cfe2f0;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; bottom: 0; left: 0;
  z-index: 50;
}
.sidebar-brand {
  padding: 24px 22px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  display: flex; align-items: center; gap: 12px;
}
.sidebar-brand .ico {
  width: 40px; height: 40px;
  background: var(--azul-600);
  border-radius: 10px;
  display:flex; align-items:center; justify-content:center;
  font-size: 20px;
}
.sidebar-brand b { color:#fff; font-size: 15.5px; font-weight: 800; line-height:1.2; }
.sidebar-brand span { font-size: 11px; color:#7ba8c9; }
.nav { padding: 16px 12px; flex: 1; overflow-y:auto; }
.nav a {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 14px;
  border-radius: var(--radio-sm);
  color: #aecbe0;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 3px;
  transition: var(--trans);
}
.nav a .ic { font-size: 18px; width:20px; text-align:center; }
.nav a:hover { background: rgba(255,255,255,.07); color:#fff; }
.nav a.activo { background: var(--azul-600); color:#fff; }
.nav .sep { font-size:11px; text-transform:uppercase; letter-spacing:1px; color:#5c87a6; padding:14px 14px 6px; }
.sidebar-foot {
  padding: 16px 18px;
  border-top: 1px solid rgba(255,255,255,.08);
  font-size: 12px;
}
.sidebar-foot .usr { color:#fff; font-weight:700; }
.sidebar-foot .rol { color:#7ba8c9; }

.contenido { margin-left: 256px; flex: 1; display:flex; flex-direction:column; }
.topbar {
  background: var(--blanco);
  border-bottom: 1px solid var(--gris-100);
  padding: 16px 30px;
  display:flex; align-items:center; justify-content:space-between;
  position: sticky; top:0; z-index:40;
}
.topbar h2 { font-size: 19px; font-weight:800; color:var(--azul-900); letter-spacing:-.3px;}
.topbar .acc { display:flex; gap:10px; align-items:center; }
.main { padding: 30px; flex:1; }

/* ---------- Cards / KPI ---------- */
.grid-kpi {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px,1fr));
  gap: 18px;
  margin-bottom: 26px;
}
.kpi {
  background: var(--blanco);
  border-radius: var(--radio);
  padding: 22px 24px;
  box-shadow: var(--sombra-sm);
  border: 1px solid var(--gris-100);
  position: relative;
  overflow:hidden;
}
.kpi::before {
  content:''; position:absolute; left:0; top:0; bottom:0; width:4px;
  background: var(--azul-600);
}
.kpi.verde::before { background: var(--verde); }
.kpi.ambar::before { background: var(--ambar); }
.kpi.rojo::before  { background: var(--rojo); }
.kpi .lbl { font-size:12.5px; color:var(--gris-500); font-weight:600; text-transform:uppercase; letter-spacing:.5px;}
.kpi .val { font-size:27px; font-weight:800; color:var(--azul-900); margin-top:8px; letter-spacing:-.5px;}
.kpi .sub { font-size:12.5px; color:var(--gris-500); margin-top:4px; }

.card {
  background: var(--blanco);
  border-radius: var(--radio);
  box-shadow: var(--sombra-sm);
  border: 1px solid var(--gris-100);
  margin-bottom: 24px;
}
.card-head {
  padding: 18px 24px;
  border-bottom: 1px solid var(--gris-100);
  display:flex; align-items:center; justify-content:space-between;
}
.card-head h3 { font-size:16px; font-weight:800; color:var(--azul-900); }
.card-body { padding: 24px; }
.card-body.p0 { padding: 0; }

/* ---------- Tablas ---------- */
.tabla-wrap { overflow-x:auto; }
table.tabla { width:100%; border-collapse:collapse; }
table.tabla th {
  text-align:left;
  font-size:12px;
  text-transform:uppercase;
  letter-spacing:.6px;
  color:var(--gris-500);
  font-weight:700;
  padding:14px 18px;
  border-bottom:2px solid var(--gris-100);
  background:var(--gris-50);
}
table.tabla td {
  padding:14px 18px;
  border-bottom:1px solid var(--gris-100);
  font-size:14px;
  color:var(--gris-700);
}
table.tabla tbody tr { transition: background .15s; }
table.tabla tbody tr:hover { background: var(--azul-50); }
table.tabla .num { text-align:right; font-variant-numeric: tabular-nums; }
table.tabla .acc { text-align:right; white-space:nowrap; }

/* ---------- Badges ---------- */
.badge {
  display:inline-flex; align-items:center; gap:5px;
  padding:4px 11px;
  border-radius:20px;
  font-size:12px;
  font-weight:700;
}
.badge::before { content:''; width:6px; height:6px; border-radius:50%; background:currentColor; }
.b-borrador { background:#EEF1F4; color:#6B7C8D; }
.b-emitida  { background:#E3F0FB; color:#1F6FB2; }
.b-enviada  { background:#FFF4DC; color:#B5840C; }
.b-pagada   { background:#DEF5EE; color:#0E7D67; }
.b-anulada  { background:#FBE5E4; color:#B23E3B; }

/* ---------- Alertas ---------- */
.alert {
  padding: 13px 18px;
  border-radius: var(--radio-sm);
  font-size:14px;
  font-weight:600;
  margin-bottom:18px;
  display:flex; align-items:center; gap:10px;
}
.alert-ok   { background:#DEF5EE; color:#0E7D67; border:1px solid #B6E5D7;}
.alert-err  { background:#FBE5E4; color:#B23E3B; border:1px solid #F0C5C3;}
.alert-info { background:#E3F0FB; color:#14507C; border:1px solid #C4DEF2;}

/* ---------- Utilidades ---------- */
.flex { display:flex; }
.flex-between { display:flex; align-items:center; justify-content:space-between; }
.gap-10 { gap:10px; } .gap-16 { gap:16px; }
.mt-0{margin-top:0}.mt-10{margin-top:10px}.mt-20{margin-top:20px}.mt-30{margin-top:30px}
.mb-0{margin-bottom:0}.mb-10{margin-bottom:10px}.mb-20{margin-bottom:20px}
.text-center{text-align:center}.text-right{text-align:right}
.text-muted{color:var(--gris-500)}
.w-100{width:100%}
.hidden{display:none}
.vacio { text-align:center; padding:60px 24px; color:var(--gris-500); }
.vacio .em { font-size:46px; margin-bottom:14px; opacity:.5; }
.vacio p { font-size:15px; }

.toggle-menu { display:none; background:none; border:none; font-size:22px; color:var(--azul-900); cursor:pointer; }

/* ---------- Items dinámicos factura ---------- */
.item-row {
  display:grid;
  grid-template-columns: 1fr 90px 130px 130px 40px;
  gap:10px;
  align-items:start;
  margin-bottom:10px;
}
.item-row.con-iva {
  grid-template-columns: 1fr 80px 120px 75px 120px 40px;
}
.item-row input { padding:10px 12px; }
.item-row .quitar {
  background:var(--rojo); color:#fff; border:none;
  border-radius:6px; cursor:pointer; height:42px; font-size:16px;
}
.item-row .quitar:hover { background:var(--rojo-d); }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .sidebar { transform: translateX(-100%); transition: transform .25s; }
  .sidebar.abierto { transform: translateX(0); }
  .contenido { margin-left:0; }
  .toggle-menu { display:block; }
  .item-row { grid-template-columns: 1fr; }
  .item-row.con-iva { grid-template-columns: 1fr; }
  .item-row .quitar { width:100%; }
}
@media (max-width:600px){
  .main{padding:18px}
  .topbar{padding:14px 18px}
  .card-body{padding:18px}
  table.tabla th, table.tabla td{padding:11px 12px;}
}

/* Overlay móvil */
.overlay {
  display:none; position:fixed; inset:0;
  background:rgba(14,58,92,.4); z-index:45;
}
.overlay.activo { display:block; }