/* -------------------------------------------------------
   SB Admin 2 - Lite (closer look)
   - Mantiene estilo SB Admin 2 sin framework extra
   - Ideal si aún no incluyes el CSS oficial
-------------------------------------------------------- */

/* Base + variables */
:root{
  --primary:#4e73df;
  --success:#1cc88a;
  --info:#36b9cc;
  --warning:#f6c23e;
  --danger:#e74a3b;
  --secondary:#858796;
  --light:#f8f9fc;
  --dark:#5a5c69;

  --gray-100:#f8f9fc;
  --gray-200:#eaecf4;
  --gray-300:#dddfeb;
  --gray-400:#d1d3e2;
  --gray-500:#b7b9cc;
  --gray-600:#858796;
  --gray-700:#6e707e;
  --gray-800:#5a5c69;
  --gray-900:#3a3b45;

  --border:#e3e6f0;
  --shadow:0 .15rem 1.75rem 0 rgba(58,59,69,.15);
  --shadow-sm:0 .125rem .25rem rgba(0,0,0,.075);
  --radius:.35rem;
  --radius-sm:.25rem;

  --sidebar-w:224px;
  --topbar-h:4.375rem;

  --font:"Nunito",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:.875rem;
  font-weight:400;
  line-height:1.5;
  color:var(--gray-900);
  background:var(--gray-100);
}

a{color:var(--primary);text-decoration:none}
a:hover{color:#224abe;text-decoration:underline}

hr{border:0;border-top:1px solid var(--border);margin:1rem 0}

/* Layout */
.sidebar{
  min-height:100vh;
  width:var(--sidebar-w);
  position:fixed;
  top:0;left:0;
  color:#fff;
  /* SB Admin 2 style gradient */
  background:linear-gradient(180deg,#4e73df 10%,#224abe 100%);
  box-shadow:var(--shadow-sm);
  overflow-y:auto;
}

.sidebar .brand{
  height:var(--topbar-h);
  display:flex;
  align-items:center;
  padding:0 1rem;
  font-weight:800;
  font-size:1rem;
  letter-spacing:.03em;
  text-transform:uppercase;
  border-bottom:1px solid rgba(255,255,255,.12);
}

.sidebar .nav{
  padding:.5rem 0;
}

.sidebar a{
  display:flex;
  align-items:center;
  gap:.5rem;
  padding:.65rem 1rem;
  color:rgba(255,255,255,.86);
  text-decoration:none;
  font-weight:600;
  font-size:.85rem;
  opacity:1;
}
.sidebar a:hover{
  color:#fff;
  background:rgba(255,255,255,.12);
  text-decoration:none;
}
.sidebar a.active{
  color:#fff;
  background:rgba(255,255,255,.18);
}
.sidebar .nav-heading{
  padding:.75rem 1rem .25rem;
  font-size:.7rem;
  text-transform:uppercase;
  letter-spacing:.08em;
  color:rgba(255,255,255,.55);
  font-weight:800;
}

.content-wrapper{
  margin-left:var(--sidebar-w);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}

.topbar{
  height:var(--topbar-h);
  background:#fff;
  border-bottom:1px solid var(--border);
  box-shadow:0 .15rem 1.75rem 0 rgba(58,59,69,.05);
  display:flex;
  align-items:center;
  padding:0 1rem;
  position:sticky;
  top:0;
  z-index:10;
}
.topbar .title{
  font-weight:700;
  color:var(--gray-800);
  font-size:1rem;
}
.content{
  padding:1.5rem 1.5rem 2rem;
  flex:1 1 auto;
}

/* Grid helpers */
.row{display:flex;flex-wrap:wrap;margin:-.75rem}
.col{flex:1 1 280px;padding:.75rem}
.col-12{flex:0 0 100%;padding:.75rem}

/* Cards (SB Admin 2 vibe) */
.card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:0 .15rem 1.75rem 0 rgba(58,59,69,.06);
  margin-bottom:1.5rem;
  overflow:hidden;
}
.card-header{
  padding:.75rem 1rem;
  margin:0;
  background:#fff;
  border-bottom:1px solid var(--border);
  font-weight:700;
  color:var(--gray-800);
}
.card-body{padding:1rem}
.card-footer{
  padding:.75rem 1rem;
  background:#fff;
  border-top:1px solid var(--border);
}
.card-title{margin:0 0 .5rem;font-weight:700}
.card-subtitle{margin:0 0 .75rem;color:var(--gray-600)}

/* “Border-left” stat cards (muy SB Admin 2) */
.card.border-left{
  border-left:.25rem solid var(--primary);
}
.card.border-left.success{border-left-color:var(--success)}
.card.border-left.info{border-left-color:var(--info)}
.card.border-left.warning{border-left-color:var(--warning)}
.card.border-left.danger{border-left-color:var(--danger)}

/* Tables */
table{width:100%;border-collapse:collapse;background:#fff}
th,td{
  padding:.75rem .75rem;
  border-bottom:1px solid var(--border);
  vertical-align:top;
}
thead th{
  font-weight:800;
  font-size:.75rem;
  text-transform:uppercase;
  letter-spacing:.03em;
  color:var(--gray-700);
  background:var(--gray-100);
  border-bottom:1px solid var(--border);
}
tbody tr:hover{background:#f8f9fc}
.table-responsive{width:100%;overflow:auto;border-radius:var(--radius);border:1px solid var(--border)}

/* Forms */
label{
  display:inline-block;
  margin-bottom:.35rem;
  font-weight:700;
  color:var(--gray-800);
  font-size:.8rem;
}
.form-control{
  width:100%;
  display:block;
  padding:.5rem .75rem;
  font-size:.875rem;
  line-height:1.5;
  color:var(--gray-900);
  background:#fff;
  background-clip:padding-box;
  border:1px solid var(--gray-400);
  border-radius:var(--radius-sm);
  transition:border-color .15s ease-in-out, box-shadow .15s ease-in-out;
}
.form-control:focus{
  outline:0;
  border-color:#bac8f3;
  box-shadow:0 0 0 .2rem rgba(78,115,223,.25);
}
.form-control::placeholder{color:var(--gray-600);opacity:.7}
.form-group{margin-bottom:1rem}
.help-text{color:var(--gray-600);font-size:.8rem;margin-top:.25rem}

/* Buttons (SB Admin 2 style) */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.4rem;
  padding:.45rem .85rem;
  font-size:.85rem;
  font-weight:700;
  line-height:1.5;
  border-radius:var(--radius-sm);
  border:1px solid transparent;
  cursor:pointer;
  user-select:none;
  text-decoration:none;
  transition:background-color .15s ease,border-color .15s ease,box-shadow .15s ease,transform .02s ease;
}
.btn:active{transform:translateY(1px)}
.btn:focus{outline:0;box-shadow:0 0 0 .2rem rgba(78,115,223,.25)}

.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn-primary:hover{background:#2e59d9;border-color:#2653d4;color:#fff;text-decoration:none}

.btn-success{background:var(--success);border-color:var(--success);color:#fff}
.btn-success:hover{background:#17a673;border-color:#169b6b;color:#fff;text-decoration:none}

.btn-info{background:var(--info);border-color:var(--info);color:#fff}
.btn-info:hover{background:#2c9faf;border-color:#2a96a5;color:#fff;text-decoration:none}

.btn-warning{background:var(--warning);border-color:var(--warning);color:#fff}
.btn-warning:hover{background:#f4b619;border-color:#f4b30d;color:#fff;text-decoration:none}

.btn-danger{background:var(--danger);border-color:var(--danger);color:#fff}
.btn-danger:hover{background:#e02d1b;border-color:#d52a1a;color:#fff;text-decoration:none}

.btn-light{background:var(--gray-100);border-color:var(--gray-300);color:var(--gray-800)}
.btn-light:hover{background:var(--gray-200);border-color:var(--gray-300);color:var(--gray-800);text-decoration:none}

.btn-outline-primary{background:transparent;border-color:var(--primary);color:var(--primary)}
.btn-outline-primary:hover{background:var(--primary);color:#fff;text-decoration:none}

.btn-sm{padding:.25rem .6rem;font-size:.78rem}
.btn-block{width:100%}

/* Badges */
.badge{
  display:inline-block;
  padding:.25rem .5rem;
  font-size:.75rem;
  font-weight:800;
  line-height:1;
  border-radius:10rem;
  background:var(--gray-200);
  color:var(--gray-800);
}
.badge.primary{background:rgba(78,115,223,.15);color:#224abe}
.badge.success{background:rgba(28,200,138,.15);color:#13855c}
.badge.warning{background:rgba(246,194,62,.18);color:#b07c00}
.badge.danger{background:rgba(231,74,59,.15);color:#a71d2a}
.badge.info{background:rgba(54,185,204,.15);color:#1f7a89}

/* Alerts */
.alert{
  padding:.75rem 1rem;
  border-radius:var(--radius);
  border:1px solid transparent;
  margin-bottom:1rem;
}
.alert-success{background:rgba(28,200,138,.12);border-color:rgba(28,200,138,.25);color:#0f6848}
.alert-danger{background:rgba(231,74,59,.12);border-color:rgba(231,74,59,.25);color:#8a1f16}
.alert-warning{background:rgba(246,194,62,.15);border-color:rgba(246,194,62,.3);color:#7a5a00}
.alert-info{background:rgba(54,185,204,.12);border-color:rgba(54,185,204,.25);color:#155a64}

/* Text utils */
.muted{color:var(--gray-600)}
.text-right{text-align:right}
.text-center{text-align:center}
.text-small{font-size:.8rem}

/* Spacing utils */
.mt-0{margin-top:0}
.mt-1{margin-top:.25rem}
.mt-2{margin-top:.5rem}
.mt-3{margin-top:1rem}
.mt-4{margin-top:1.5rem}
.mb-0{margin-bottom:0}
.mb-1{margin-bottom:.25rem}
.mb-2{margin-bottom:.5rem}
.mb-3{margin-bottom:1rem}
.mb-4{margin-bottom:1.5rem}

/* Login box style */
.auth-wrap{
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:1rem;
}
.auth-card{
  width:100%;
  max-width:420px;
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  border:1px solid var(--border);
  background:#fff;
  overflow:hidden;
}
.auth-card .auth-header{
  padding:1.25rem 1.25rem .5rem;
  text-align:center;
  font-weight:800;
  color:var(--gray-800);
}
.auth-card .auth-body{padding:1.25rem}

/* Responsive */
@media (max-width: 992px){
  :root{--sidebar-w:0px}
  .sidebar{transform:translateX(-100%);position:fixed;z-index:20}
  .content-wrapper{margin-left:0}
}

/* Print */
@media print{
  .sidebar,.topbar{display:none!important}
  .content-wrapper{margin-left:0!important}
  body{background:#fff}
}