:root{
  --navy:#0A1628; --navy-2:#11203a; --gold:#F5A800; --gold-dark:#c98a00;
  --bg:#f3f5f9; --card:#ffffff; --text:#16202e; --muted:#6b7a8d;
  --border:#e4e9f0; --danger:#dc2626; --danger-l:#fef2f2;
  --warn:#d97706; --warn-l:#fffbeb; --ok:#059669; --ok-l:#ecfdf5;
  --blue:#2563eb; --gray-l:#f1f5f9; --shadow:0 1px 3px rgba(16,32,55,.08);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{font-family:'Segoe UI',system-ui,-apple-system,sans-serif;font-size:14px;
  background:var(--bg);color:var(--text);display:flex;min-height:100vh}

/* ---------- SIDEBAR ---------- */
.sidebar{width:230px;background:var(--navy);display:flex;flex-direction:column;
  min-height:100vh;flex-shrink:0;position:sticky;top:0;height:100vh;z-index:50}
.sidebar-logo{padding:20px 18px;border-bottom:1px solid rgba(255,255,255,.08)}
.sidebar-logo .brand{font-size:18px;font-weight:800;color:#fff;letter-spacing:1px}
.sidebar-logo .brand::after{content:"";display:inline-block;width:8px;height:8px;
  background:var(--gold);border-radius:50%;margin-left:5px;vertical-align:middle}
.sidebar-logo .sub{font-size:11px;color:#9fb2c9;margin-top:3px}
.sidebar nav{flex:1;padding:10px 0;overflow-y:auto}
.nav-sep{font-size:10px;letter-spacing:1px;color:#62768f;
  padding:14px 18px 6px;font-weight:700}
.nav-item{display:flex;align-items:center;gap:11px;padding:11px 18px;color:#c8d6e8;
  text-decoration:none;font-size:13px;border-left:3px solid transparent;transition:.15s}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.active{background:rgba(245,168,0,.12);color:#fff;border-left-color:var(--gold)}
.nav-item svg{width:17px;height:17px;flex-shrink:0}
.sidebar-footer{padding:14px 18px;border-top:1px solid rgba(255,255,255,.08);
  font-size:12px;color:#9fb2c9}
.sidebar-footer a{color:var(--gold);text-decoration:none}

/* ---------- MAIN ---------- */
.main{flex:1;display:flex;flex-direction:column;min-width:0}
.topbar{background:var(--card);border-bottom:1px solid var(--border);padding:0 22px;
  height:58px;display:flex;align-items:center;gap:14px;position:sticky;top:0;z-index:40}
.topbar-title{font-size:16px;font-weight:700;flex:1}
.topbar-right{display:flex;align-items:center;gap:14px}
.hamb{display:none;background:none;border:none;cursor:pointer;color:var(--text)}
.hamb svg{width:24px;height:24px}
.rol-chip{background:var(--navy);color:#fff;font-size:11px;font-weight:700;
  padding:4px 10px;border-radius:20px;letter-spacing:.5px}
.bell{position:relative;cursor:pointer;color:var(--muted)}
.bell svg{width:22px;height:22px}
.bell-badge{position:absolute;top:-6px;right:-6px;background:var(--danger);color:#fff;
  font-size:10px;font-weight:700;min-width:17px;height:17px;border-radius:9px;
  display:flex;align-items:center;justify-content:center;padding:0 4px}
.content{flex:1;padding:22px;overflow-y:auto}

/* ---------- PANEL ALERTAS ---------- */
.alert-panel{display:none;position:absolute;right:18px;top:54px;width:340px;max-width:92vw;
  background:#fff;border:1px solid var(--border);border-radius:10px;box-shadow:0 8px 30px rgba(16,32,55,.18);
  z-index:60;max-height:60vh;overflow-y:auto}
.alert-panel.show{display:block}
.alert-row{padding:11px 14px;border-bottom:1px solid var(--border);font-size:12.5px;color:var(--text)}
.alert-row.crit{background:var(--danger-l)}
.alert-row:last-child{border-bottom:none}
.alert-empty{padding:18px;text-align:center;color:var(--muted);font-size:13px}

/* ---------- MÉTRICAS (KPI cards) ---------- */
.metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin-bottom:20px}
.metric-card{background:var(--card);border-radius:12px;padding:16px 18px;border:1px solid var(--border);
  box-shadow:var(--shadow);position:relative;overflow:hidden}
.metric-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--gold)}
.metric-card .label{font-size:12px;color:var(--muted);margin-bottom:6px;font-weight:600}
.metric-card .value{font-size:25px;font-weight:800;line-height:1.1}
.metric-card .value.green{color:var(--ok)} .metric-card .value.red{color:var(--danger)}
.metric-card .value.amber{color:var(--warn)} .metric-card .value.blue{color:var(--blue)}
.metric-card .value.navy{color:var(--navy)}
.metric-card .sub{font-size:11px;color:var(--muted);margin-top:4px}

/* ---------- GRÁFICOS ---------- */
.charts{display:grid;grid-template-columns:2fr 1fr;gap:16px;margin-bottom:20px}
.chart-card{background:var(--card);border:1px solid var(--border);border-radius:12px;
  padding:16px 18px;box-shadow:var(--shadow)}
.chart-card h3{font-size:14px;font-weight:700;margin-bottom:12px;color:var(--text)}
.chart-card canvas{max-height:280px}

/* ---------- CARDS / SECCIONES ---------- */
.card{background:var(--card);border:1px solid var(--border);border-radius:12px;
  box-shadow:var(--shadow);margin-bottom:18px}
.card-head{padding:14px 18px;border-bottom:1px solid var(--border);display:flex;
  align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
.card-head h3{font-size:15px;font-weight:700}
.card-body{padding:18px}

/* ---------- FILTROS / BOTONES ---------- */
.filters{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:16px}
.filters select,.filters input[type=text],.filters input[type=date],.filters input[type=month]{
  height:36px;border:1px solid var(--border);border-radius:7px;padding:0 11px;font-size:13px;
  background:#fff;color:var(--text);outline:none}
.filters select:focus,.filters input:focus{border-color:var(--gold)}
.btn{height:36px;padding:0 16px;border-radius:7px;font-size:13px;border:1px solid var(--border);
  background:#fff;color:var(--text);cursor:pointer;display:inline-flex;align-items:center;
  gap:6px;font-weight:600;text-decoration:none}
.btn:hover{background:var(--gray-l)}
.btn-primary{background:var(--gold);color:var(--navy);border-color:var(--gold-dark)}
.btn-primary:hover{background:var(--gold-dark);color:#fff}
.btn-danger{background:#fff;color:var(--danger);border-color:#fca5a5}
.btn-danger:hover{background:var(--danger-l)}
.btn-sm{height:30px;padding:0 11px;font-size:12px}
.spacer{flex:1}

/* ---------- TABLAS ---------- */
.table-wrap{background:var(--card);border:1px solid var(--border);border-radius:12px;
  overflow-x:auto;box-shadow:var(--shadow)}
table{width:100%;border-collapse:collapse;font-size:13px;min-width:560px}
thead th{background:var(--gray-l);padding:11px 13px;text-align:left;font-weight:700;
  font-size:11.5px;color:var(--muted);border-bottom:1px solid var(--border);
  white-space:nowrap;text-transform:uppercase;letter-spacing:.4px}
tbody td{padding:11px 13px;border-bottom:1px solid var(--border);vertical-align:middle}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover td{background:#f8fafc}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}
.tfoot td{font-weight:800;background:#fbfcfe;border-top:2px solid var(--border)}

/* ---------- BADGES ---------- */
.badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:11px;font-weight:700;white-space:nowrap}
.b-ok{background:var(--ok-l);color:var(--ok)} .b-err{background:var(--danger-l);color:var(--danger)}
.b-pend{background:var(--warn-l);color:var(--warn)} .b-info{background:#eff6ff;color:var(--blue)}
.b-gray{background:var(--gray-l);color:var(--muted)} .b-gold{background:#fff7e6;color:var(--gold-dark)}

/* ---------- FORM (modal) ---------- */
.modal-bg{display:none;position:fixed;inset:0;background:rgba(10,22,40,.55);z-index:100;
  align-items:flex-start;justify-content:center;padding:30px 14px;overflow-y:auto}
.modal-bg.show{display:flex}
.modal{background:#fff;border-radius:14px;width:560px;max-width:100%;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.modal-head{padding:16px 20px;border-bottom:1px solid var(--border);font-size:16px;font-weight:700;
  display:flex;justify-content:space-between;align-items:center}
.modal-head .x{cursor:pointer;color:var(--muted);font-size:22px;line-height:1}
.modal-body{padding:20px;display:grid;grid-template-columns:1fr 1fr;gap:14px}
.modal-body .full{grid-column:1/-1}
.modal-foot{padding:14px 20px;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:10px}
.fg label{display:block;font-size:12.5px;font-weight:600;margin-bottom:5px;color:var(--text)}
.fg input,.fg select,.fg textarea{width:100%;height:38px;border:1px solid var(--border);
  border-radius:7px;padding:0 11px;font-size:14px;outline:none;color:var(--text)}
.fg textarea{height:auto;padding:9px 11px;resize:vertical}
.fg input:focus,.fg select:focus,.fg textarea:focus{border-color:var(--gold)}

/* ---------- FLASH ---------- */
.flash{padding:11px 15px;border-radius:8px;font-size:13px;margin-bottom:16px;font-weight:600}
.flash.ok{background:var(--ok-l);color:var(--ok)}
.flash.err{background:var(--danger-l);color:var(--danger)}

/* ---------- LOGIN ---------- */
.login-wrap{min-height:100vh;width:100%;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#0A1628,#11203a)}
.login-card{background:#fff;border-radius:16px;padding:38px 40px;width:380px;max-width:92vw;
  box-shadow:0 20px 60px rgba(0,0,0,.35)}
.login-card .logo-area{text-align:center;margin-bottom:26px}
.login-card .logo-area h1{font-size:26px;font-weight:800;color:var(--navy);letter-spacing:1px}
.login-card .logo-area h1 b{color:var(--gold)}
.login-card .logo-area p{font-size:13px;color:var(--muted);margin-top:5px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:13px;font-weight:600;margin-bottom:6px}
.form-group input{width:100%;height:42px;border:1px solid var(--border);border-radius:8px;
  padding:0 13px;font-size:14px;outline:none}
.form-group input:focus{border-color:var(--gold)}
.btn-login{width:100%;height:44px;background:var(--gold);color:var(--navy);border:none;
  border-radius:8px;font-size:15px;font-weight:800;cursor:pointer;margin-top:6px}
.btn-login:hover{background:var(--gold-dark);color:#fff}
.alert-err{background:var(--danger-l);color:var(--danger);border-radius:8px;padding:10px 14px;
  font-size:13px;margin-bottom:16px}

/* ---------- ACCIONES TABLA ---------- */
.act{background:none;border:1px solid var(--border);border-radius:6px;padding:4px 9px;
  font-size:11.5px;cursor:pointer;color:var(--muted);margin-right:4px;text-decoration:none;
  display:inline-block;font-weight:600}
.act:hover{background:var(--gray-l);color:var(--text)}
.act.edit{border-color:#bfdbfe;color:var(--blue)} .act.edit:hover{background:#eff6ff}
.act.del{border-color:#fca5a5;color:var(--danger)} .act.del:hover{background:var(--danger-l)}
.act.pay{border-color:#a7f3d0;color:var(--ok)} .act.pay:hover{background:var(--ok-l)}

.overlay{display:none;position:fixed;inset:0;background:rgba(10,22,40,.5);z-index:45}
.overlay.show{display:block}

/* ============ RESPONSIVE: TABLET Y CELULAR ============ */
@media(max-width:1024px){
  .charts{grid-template-columns:1fr}
}
@media(max-width:768px){
  .sidebar{position:fixed;left:0;top:0;transform:translateX(-100%);transition:transform .25s;
    box-shadow:4px 0 20px rgba(0,0,0,.3)}
  .sidebar.open{transform:translateX(0)}
  .overlay.show{display:block}
  .hamb{display:inline-flex}
  .content{padding:16px}
  .modal-body{grid-template-columns:1fr}
  .metric-card .value{font-size:22px}
  .topbar-title{font-size:15px}
}