:root {
  --azul-principal: #1e3a5f;
  --azul-claro: #2d5a8c;
  --verde: #1fa87a;
  --vermelho: #e0524d;
  --amarelo: #f0ad4e;
  --cinza-fundo: #f4f6f9;
}

body {
  background-color: var(--cinza-fundo);
  font-family: 'Segoe UI', Roboto, Arial, sans-serif;
}

/* ---------- LOGIN ---------- */
.login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--azul-principal), var(--azul-claro));
}
.login-card {
  width: 100%;
  max-width: 400px;
  border: none;
  border-radius: 14px;
  box-shadow: 0 15px 35px rgba(0,0,0,.25);
}
.login-card .card-body { padding: 40px 35px; }
.login-logo {
  width: 64px; height: 64px; border-radius: 50%;
  background: var(--azul-principal);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 28px; margin: 0 auto 15px;
}

/* ---------- LAYOUT ---------- */
#sidebar {
  width: 250px;
  min-height: 100vh;
  background: var(--azul-principal);
  position: fixed;
  top: 0; left: 0;
  transition: margin-left .25s ease;
  z-index: 1030;
}
#sidebar .brand {
  padding: 20px; color: #fff; font-weight: 700; font-size: 1.15rem;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
#sidebar a.nav-link {
  color: rgba(255,255,255,.8);
  padding: 12px 20px;
  font-size: .92rem;
  border-left: 3px solid transparent;
}
#sidebar a.nav-link:hover, #sidebar a.nav-link.active {
  background: rgba(255,255,255,.08);
  color: #fff;
  border-left-color: var(--verde);
}
#sidebar a.nav-link i { width: 20px; margin-right: 8px; }
#sidebar .nav-heading { color: rgba(255,255,255,.4); font-size: .72rem; text-transform: uppercase; padding: 15px 20px 5px; }

#content { margin-left: 250px; transition: margin-left .25s ease; }
#topbar {
  background: #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,.08);
  padding: 12px 20px;
  display: flex; align-items: center; justify-content: space-between;
}

@media (max-width: 991.98px) {
  #sidebar { margin-left: -250px; }
  #sidebar.show { margin-left: 0; }
  #content { margin-left: 0; }
}

.page-wrap { padding: 22px; }

/* ---------- CARDS DASHBOARD ---------- */
.card-kpi {
  border: none; border-radius: 12px; color: #fff;
  box-shadow: 0 6px 16px rgba(0,0,0,.08);
}
.card-kpi .kpi-icon {
  width: 46px; height: 46px; border-radius: 10px;
  background: rgba(255,255,255,.2);
  display: flex; align-items: center; justify-content: center; font-size: 20px;
}
.card-kpi small { opacity: .85; }
.card-kpi h4 { font-weight: 700; margin: 0; }
.bg-kpi-1 { background: linear-gradient(135deg,#e0524d,#c0392b); }
.bg-kpi-2 { background: linear-gradient(135deg,#1fa87a,#12694b); }
.bg-kpi-3 { background: linear-gradient(135deg,#f0ad4e,#c9821a); }
.bg-kpi-4 { background: linear-gradient(135deg,#2d5a8c,#1e3a5f); }

.card { border: none; border-radius: 12px; box-shadow: 0 2px 10px rgba(0,0,0,.06); }
.table-responsive { border-radius: 10px; overflow: hidden; }
.table thead th { background: #eef1f6; font-size: .8rem; text-transform: uppercase; color: #555; border: none; }
.btn-primary { background: var(--azul-principal); border-color: var(--azul-principal); }
.btn-primary:hover { background: var(--azul-claro); border-color: var(--azul-claro); }

.alerta-item { border-left: 4px solid; padding: 10px 14px; margin-bottom: 8px; border-radius: 6px; background: #fff; }
.alerta-vencida { border-color: var(--vermelho); }
.alerta-hoje { border-color: var(--amarelo); }
.alerta-proxima { border-color: #f7d33d; }
.alerta-ok { border-color: var(--verde); }