:root {
    --azul-principal: #1656c7;
    --azul-oscuro: #0d3d91;
    --celeste: #17a9e0;
    --naranja: #ff8a00;
    --gris-fondo: #f3f6fb;
    --gris-borde: #e3e8f0;
    --texto-oscuro: #1f2937;
    --verde-ok: #16a34a;
    --rojo-error: #dc2626;
}

* { box-sizing: border-box; }

body {
    background: var(--gris-fondo);
    font-family: 'Segoe UI', Roboto, Arial, sans-serif;
    color: var(--texto-oscuro);
}

/* ---------- LOGIN ---------- */
.pantalla-login {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--azul-oscuro), var(--celeste));
}

.tarjeta-login {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 20px 50px rgba(13, 61, 145, 0.25);
    width: 100%;
    max-width: 400px;
    padding: 40px 36px;
}

.tarjeta-login .logo-texto {
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--azul-principal);
    text-align: center;
    margin-bottom: 4px;
}

.tarjeta-login .subtitulo {
    text-align: center;
    color: #6b7280;
    font-size: 0.9rem;
    margin-bottom: 28px;
}

/* ---------- LAYOUT ---------- */
.sidebar {
    width: 240px;
    height: 100vh;
    background: linear-gradient(180deg, var(--azul-oscuro), var(--azul-principal));
    position: fixed;
    top: 0;
    left: 0;
    color: #fff;
    padding-top: 20px;
    z-index: 100;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.sidebar::-webkit-scrollbar { width: 6px; }
.sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.25); border-radius: 4px; }

.sidebar .marca {
    text-align: center;
    font-weight: 800;
    font-size: 1.15rem;
    padding: 0 16px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.15);
    margin-bottom: 12px;
}

.sidebar a.nav-link {
    color: rgba(255,255,255,0.85);
    padding: 11px 22px;
    font-size: 0.93rem;
    display: flex;
    align-items: center;
    gap: 10px;
    border-left: 3px solid transparent;
}

.sidebar a.nav-link:hover,
.sidebar a.nav-link.activo {
    background: rgba(255,255,255,0.1);
    color: #fff;
    border-left-color: var(--naranja);
}

.contenido {
    margin-left: 240px;
    padding: 24px 28px;
    min-height: 100vh;
}

.topbar {
    background: #fff;
    border-radius: 12px;
    padding: 14px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.04);
    margin-bottom: 22px;
}

@media (max-width: 900px) {
    .sidebar { transform: translateX(-100%); transition: 0.25s; }
    .sidebar.abierto { transform: translateX(0); }
    .contenido { margin-left: 0; }
}

/* ---------- TARJETAS DASHBOARD ---------- */
.tarjeta-kpi {
    background: #fff;
    border-radius: 14px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    border-left: 5px solid var(--azul-principal);
}

.tarjeta-kpi .valor {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--texto-oscuro);
}

.tarjeta-kpi .etiqueta {
    color: #6b7280;
    font-size: 0.85rem;
}

.tarjeta-kpi.naranja { border-left-color: var(--naranja); }
.tarjeta-kpi.celeste { border-left-color: var(--celeste); }
.tarjeta-kpi.verde { border-left-color: var(--verde-ok); }

.card-panel {
    background: #fff;
    border-radius: 14px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

/* ---------- TABLAS ---------- */
.tabla-datos thead {
    background: var(--gris-fondo);
}

.tabla-datos th {
    font-size: 0.78rem;
    text-transform: uppercase;
    color: #6b7280;
    white-space: nowrap;
}

.badge-estado-activo { background: #dcfce7; color: var(--verde-ok); }
.badge-estado-inactivo { background: #fee2e2; color: var(--rojo-error); }

.btn-primario {
    background: var(--azul-principal);
    color: #fff;
    border: none;
}
.btn-primario:hover { background: var(--azul-oscuro); color: #fff; }

.avatar-circulo {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--azul-principal);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
}